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| 1 | Geochemical characteristics of natural gas from mud volcanoes in the southern Junggar Basin显示文摘A number of mud volcanoes exist in the southern Junggar Basin. To date few systematic studies on natural gas geochemistry of mud volcanoes have been conducted in China. In June 1991 and August 2010, the authors investigated the mud volcanoes in the southern Junggar Basin twice, and the mud volcanism weakened gradually as seen from the variations such as the decrease of gas pressure and output, the downthrow and dry up of the mud pool. The volcanic intensity was significantly weaker than that in Taiwan. The natural gas from the mud volcanoes in the southern Junggar Basin has similar geochemical characteristics, indicating the same source or origin. The main component of the mud volcano gas is alkane gas with contents of 91.15%-97.49%, and the gas is high-quality commercial gas since methane dominates in the alkane. The 13C1 values are 49.1‰--40.6‰, which are in accordance with the peak 13C1 frequency of mud volcano gas around the world, and the alkane gas displays positive carbon isotopic series, i.e., 13C1< 13C2< 13C3, suggesting typical thermogenic origin. The helium in the mud volcano gas is typically crust-derived due to the low R/Ra values of 0.011-0.054. The mud volcano gas is coal-derived since the 13C2 values are all greater than 28‰, and C1/C1-4 and 13C1 values are in accordance with those of natural gas derived from the Lower-Middle Jurassic coal-measures. Therefore, alkane gas from mud volcanoes in the southern Junggar Basin is mainly sourced from the Lower-Middle Jurassic coal-measures. | DAI JinXing WU XiaoQi NI YunYan WANG ZeCheng ZHAO ChangYi WANG ZhaoYun LIU GuiXia | 2012 | Science China Earth Sciences2012，55，3： | 13 |
| 2 | An 85mW 14-bit 150MS/s Pipelined ADC with a Merged First and Second MDAC显示文摘A low-power 14-bit 150MS/s analog-to-digital converter(ADC) is presented for communication applications.Range scaling enables a maximal 2-Vp-p input with a single-stage opamp adopted.Opamp and capacitor sharing between the first multiplying digital-to-analog converter(MDAC)and the second one reduces the total opamp power further.The dedicated sample-andhold amplifier(SHA) is removed to lower the power and the noise.The blind calibration of linearity errors is proposed to improve the performance.The prototype ADC is fabricated in a 130 nm CMOS process with a 1.3-V supply voltage.The SNDR of the ADC is 71.3 dB with a 2.4 MHz input and remains 68.5 dB for a 120 MHz input.It consumes 85 mW,which includes 57 mW for the ADC core,11 mW for the low jitter clock receiver and 17 mW for the high-speed reference buffer. | LI Weitao LI Fule YANG Changyi LI Shengjing WANG Zhihua | 2015 | China Communications2015，12，5： | 6 |
| 3 | Apple detection from apple tree image based on BP neural network and Hough transform显示文摘Using machine vision to accurately identify apple number on the tree is becoming the key supporting technology for orchard precision production management.For adapting to the complexity of the field environment in various detection situations,such as illumination changes,color variation,fruit overlap,and branches and leaves shading,a robust algorithm for detecting and counting apples based on their color and shape modes was proposed.Firstly,BP(back propagation)neural network was used to train apple color identification model.Accordingly the irrelevant background was removed by using the trained neural network model and the image only containing the apple color pixels was acquired.Then apple edge detection was carried out after morphological operations on the obtained image.Finally,the image was processed by using circle Hough transform algorithm,and apples were located with the help of calculating the center coordinates of each apple edge circle.The validation experimental results showed that the correlation coefficient of R2 between the proposed approaches based counting and manually counting reached 0.985.It illustrated that the proposed algorithm could be used to detect and count apples from apple trees’images taken in field environment with a high precision and strong anti-jamming feature. | Xiao Changyi Zheng Lihua Li Minzan Chen Yuan Mai Chunyan | 2015 | International Journal of Agricultural and Biological Engineering2015，8，6： | 5 |
| 4 | Discovery of the Dagele Eclogite in East Kunlun,Western China and Its Zircon SHRIMP U-Pb Ages:New Constrains on the Central Kunlun Suture Zone显示文摘Objective Eclogites are important indicators of ancient plate boundaries or paleosuture zones.Despite their great geological significance,very few investigations have been carried out in the Kunlun region.The Central East Kunlun fault zone was believed to be an Early Paleozoic suture zone,but there has been no reliable evidence for this,though studies on ophiolite,granite,and basic granulite indicate that the Early Paleozoic orogeny occurred in the East Kunlun.This work focused on the Dagele eclogites | DU Wei JIANG Changyi Tang Zhongli XIA Mingzhe XIA Zhaode LING Jinlan ZHOU Wei WANG Bangyao | 2017 | Acta Geologica Sinica(English Edition)2017，91，3： | 5 |
| 5 | Abundances of chemical elements in granitoids of different geological ages and their characteristics in China显示文摘767 composited 的分析数据取样的实际 granitoid 这里被介绍。数据来源是从主要收集的 6080 件样品 750 大 -- 到越过中国的中号的 granitoid 身体。从 composited 样品的数据,包括 70 个元素的,根据地质的年龄始生代( Ar )被分析,原生地(磅), Eopaleozoic ( Pz1 ), Neopaleozoic ( Pz2 ),中生代( Mz ),和新生代( Cz )和三个主要组合变化,例如碱长石花岗石, syenogranite 和 adamellite 。不同岩石类型和地质的年龄的石油化学的参数,踪迹元素内容和稀土元素的元素(REE ) 分布被描绘,并且变化趋势通过对新生代时间太古代被记录。这里介绍的全面分析数据以前没被出版。这个重要数据集合能在基本中国地质学,岩浆 petrogenesis,矿石探索和地球化学的研究被用作基本信息。 | Changyi Shi Mingcai Yan Qinghua Chi | 2011 | Geoscience Frontiers2011，2，2： | 5 |
| 6 | Models of Spatial Structures of Regional Multi-element Geochemical Anomalies over Copper-Polymetallic Orefields显示文摘Regional stream sediment surveys at a 1:200,000 scale reveal positive and negative regional multi-element geochemical anomalies over medium to large copper-polymetallic orefields of different genetic types in China. Regional geochemical anomalies of orefield refer to those geochemical anomalies that are related to metallogenesis of an orefield in a certain area. The anomaly area is typically 10 to 100 km2. The regional multi-element anomalies related to mineralization can be divided into three groups, that is, the ore-element anomaly association, indicator element anomaly association, and metallogenic environmental element anomaly association. Their common spatial distributions over ore deposits or orefields possess unique structures. The model of spatial structure of regional multi-element geochemical anomalies (RAGSS) of an orefield delineates structural feature possessed by orderly spatial distributions of different groups of multi-element anomaly associations related to orefield metallogenesis. It is used to outline the common metallogenetic anomaly visage that is composed of the orderly spatial distribution of different groups of multi-element anomaly associations. The orderly spatial distribution of multi-element anomalies over an orefield reflects element distributions as they are changed from a dispersed 'out-of-order' state into a concentrated 'orderly' state during the mineralization of an orefield. Three different patterns of the spatial anomaly structure related to mineralization in an orefield can be concluded: (1) nested pattern; (2) eccentric pattern and; (3) peripheral pattern. There are marked differences between multi-element anomaly patterns related and not related to mineralization. RAGSS models of orefields can be used to better understand and evaluate regional multi-element anomalies and identify ore types. | SHI Changyi and ZHANG Jinhua China University of Geosciences, Beijing 100083 Institute of Geophysical and Geochemical Exploration, Langfang Hebei 065000 | 2003 | Acta Geologica Sinica(English Edition)2003，77，1： | 5 |
| 7 | Identification of marine natural gases with different origin sources显示文摘Kinetic experiments of gas generation for typical samples of marine gas precursors including low-maturity kerogen,residual kerogen and oil as well as dispersed liquid hydrocarbon(DLH)in source rocks were performed by closed system,and the evolution trends of molecular and isotopic compositions of natural gases from different precursors against the maturity(R0%)at laboratory conditions were analyzed.Several diagrams of gas origin were calibrated by using the experimental data.A diagram based on the ratio of normal and isomerous butane and pentane(i/nC4-i/nC5)was proposed and used to identify the origins of the typical marine natural gases in the Sichuan Basin and the Tarim Basin, China.And the maturities of natural gases were estimated by using the statistical relationships between the gaseous molecular carbon isotopic data and maturities(δ13C-R 0 %)with different origins.The results indicate that the molecular and isotopic compositions of simulated gases from different precursors are different from each other.For example,the dryness index of the oil-cracking gas is the lowest;the dryness indices of gases from DLH and kerogen in closed system are almost the same;and the dryness index of gases from residual kerogen is extremely high,indicating that the kerogen gases are very dry;the contents of non-hydrocarbon gases in kerogen-cracking gases are far higher than those in oil-cracking and DLH-cracking gases.The molecular carbon isotopes of oil-cracking gases are the lightest,those of kerogen in closed system and GLH-cracking gases are the second lightest,and those of cracking gases from residual kerogen are the heaviest.The calibration results indicate that the diagrams of ln(C1/C2)-ln(C2/C3)andδ13C2-δ13C3-ln(C2/C3)can discriminate primary and secondary cracking gases,but cannot be used to identify gas origin sources,while the diagram of i/nC4-i/nC5 can differentiate the gases from different precursors.The application results of these diagrams show that gas mixtures extensively exist in China,which involved the gases from multiple precursors and those from different maturity stages.For example,marine gases in the Sichuan Basin involve the mixture of oil-cracking gases and high-over-maturated kerogen gases,while those in the Tarim Basin involve not only the mixture of gases from multiple precursors,but also those from different maturity gases and post-reservoir alternations such as oxidized degradation and gas intrusion processes. | WANG YunPeng 1 ,ZHAO ChangYi 2 ,WANG ZhaoYun 2 ,WANG HongJun 2 ,TIAN Jin 1 ,ZOU YanRong 1 &LIU JinZhong1 1State Key Laboratory of Organic Geochemistry,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,China 2Institute of Geology,Research Institute of Petroleum Exploration and Development,PetroChina,Beijing 100083,China | 2008 | Science China Earth Sciences2008，51，S1： | 4 |
| 8 | Photothermal therapy with regulated Nrf2/NF-κB signaling pathway for treating bacteria-induced periodontitis显示文摘Periodontitis is an inflammatory disease initiated by bacterial infection,developed by excessive immune response,and aggravated by high level of reactive oxygen species(ROS).Hence,herein,a versatile metal-organic framework(MOF)-based nanoplatform is prepared using mesoporous Prussian blue(MPB)nanoparticles to load BA,denoted as MPB-BA.The established MPB-BA nanoplatform serves as a shelter and reservoir for vulnerable immunomodulatory drug BA,which possesses antioxidant,anti-inflammatory and anti-bacterial effects.Thus,MPB-BA can exert its antioxidant,anti-inflammatory functions through scavenging intracellular ROS to switch macrophages from M1 to M2 phenotype so as to relieve inflammation.The underlying molecular mechanism lies in the upregulation of phosphorylated nuclear factor erythroid 2-related factor 2(Nrf2)to scavenge ROS and subsequently inhibit the nuclear factor kappa-B(NF-κB)signal pathway.Moreover,MPB-BA also exhibited efficient photothermal antibacterial activity against periodontal pathogens under near-infrared(NIR)light irradiation.In vivo RNA sequencing results revealed the high involvement of both antioxidant and anti-inflammatory pathways after MPB-BA application.Meanwhile,micro-CT and immunohistochemical staining of p-Nrf2 and p-P65 further confirmed the superior therapeutic effects of MPB-BA than minocycline hydrochloride.This work may provide an insight into the treatment of periodontitis by regulating Nrf2/NF-κB signaling pathway through photothermal bioplatform-assisted immunotherapy. | Yujuan Tian Ying Li Jialin Liu Yi Lin Jian Jiao Bo Chen Wanmeng Wang Shuilin Wu Changyi Li | 2022 | Bioactive Materials2022，7，3： | 3 |
| 9 | Selective laser melting of bulk immiscible alloy with enhanced strength:Heterogeneous microstructure and deformation mechanisms显示文摘To overcome the dimension limits of immiscible alloys produced by traditional techniques and enhance their mechanical properties,bulk Cu-Fe-based immiscible alloy with abundant nanotwins and stacking faults was successfully produced by selective laser melting(SLM).The SLM-produced bulk immiscible alloy displays a heterogeneous microstructure characterized by micro-scaledγ-Fe particles dispersed in fineε-Cu matrix with a high fraction(~92%)of high-angle grain boundaries.Interestingly,abundant nanotwins and stacking faults are generated in the interior of nano-scaledγ-Fe particles embedded withinε-Cu matrix.The heterogeneous interface of soft domains(ε-Cu)and hard domains(γ-Fe)not only induces the geometrically necessary dislocations(GNDs)but also affects the dislocation propagation during plastic deformation.Therefore,the bimodal heterogeneous interface,and the resistance of nanotwins and stacking faults to the propagation of partial dislocation make the bulk immiscible alloy exhibit an enhanced strength of~590 MPa and a good ductility of~8.9%. | Shengfeng Zhou Min Xie Changyi Wu Yanliang Yi Dongchu Chen Lai-Chang Zhang | 2022 | Journal of Materials Science & Technology2022，，9： | 3 |
| 10 | SAR motion compensation based on the correction of residual attitude errors显示文摘As residual attitude errors are likely to affect the synthetic aperture radar (SAR) imaging, this paper presents a SAR motioncompensation algorithm based on the correction of residual attitude errors. The existing methods all use the antenna stableplatform to correct the attitude errors, and then compensate the trajectory deviations in the following imaging process. Besidescompensating the trajectory deviations, the modified method of this paper also considers the influence of residual attitude er-rors on the SAR imaging, and can compensate both the trajectory deviations and the residual attitude errors. Compared withthe existing methods, the modified method in this paper can more precisely compensate the imperfect motion on the SAR im-aging, especially good for the SAR system with a small platform, near operating distance and a narrow antenna beam. Such asystem causes severe residual attitude errors and needs to consider the influence of antenna beam pointing errors on the imag-ing. The validity of the modified method presented by this paper is demonstrated by the result of the experiment. | NI Chong WANG YanFei XU XiangHui ZHOU ChangYi | 2011 | Science China(Physics,Mechanics & Astronomy)2011，54，10： | 3 |
| 11 | On the calibration and verification of Voronoi-based discontinuous deformation analysis for modeling rock fracture显示文摘Since its introduction,discontinuous deformation analysis(DDA)has been widely used in different areas of rock mechanics.By dividing large blocks into subblocks and introducing artificial joints,DDA can be applied to rock fracture simulation.However,parameter calibration,a fundamental issue in discontinuum methods,has not received enough attention in DDA.In this study,the parameter calibration of DDA for intact rock is carefully studied.To this end,a subblock DDA with Voronoi tessellation is presented first.Then,a modified contact constitutive law is introduced,in which the tensile and shear meso-strengths are modified to be independent of the bond lengths.This improvement can prevent the unjustified preferential failure of short edges.A method for imposing confining pressure is also introduced.Thereafter,sensitivity analysis is performed to investigate the influence of the calculated parameters and meso-parameters on the mechanical properties of modeled rock.Based on the sensitivity analysis,a unified calibration procedure is suggested for both cases with and without confining pressure.Finally,the calibration procedure is applied to two examples,including a biaxial compression test.The results show that the proposed Voronoi-based DDA can simulate rock fracture with and without confining pressure very well after careful parameter calibration. | Kaiyu Zhang Feng Liu Kaiwen Xia Ying Xu Peng Dong Changyi Yu | 2023 | Journal of Rock Mechanics and Geotechnical Engineering2023，15，8： | 2 |
| 12 | A super-resolution algorithm for synthetic aperture radar based on modified spatially variant apodization显示文摘The existing spatially variant apodizations(SVAs) either cannot depress the sidelobes effectively or reduce the energy of the mainlobe.To improve this,a modified SVA(MSVA) is put forward in this paper,which expands the traditional filter from 3-taps to 5-taps and sets relevant parameters according to different sampling rates to get the excellent result that satisfies constrained optimization theory.A modified super-SVA is also presented,which compares the result after the iteration with the original signal and makes the one whose amplitude is smaller as the initial value of the next iteration.This method can eliminate the sidelobes produced by the intermediate operation,so that the following bandwidth extrapolation is more available.Super-MSVA is presented based on the modified SVA and modified super-SVA,which is suitable for any Nyquist sampling rate,can extrapolate the signal bandwidth many times through iteration with a commensurate improvement in resolution,as demonstrated by the result of the experiment. | NI Chong WANG YanFei XU XiangHui ZHOU ChangYi CUI PengFei | 2011 | Science China(Physics,Mechanics & Astronomy)2011，54，2： | 2 |
| 13 | The change of magnetic inclination angles associated with the X3.4 flare on December 13,2006显示文摘Recent studies showed a consistent pattern of changes in the sunspot structure associated with major flares: part of the peripheral penumbral regions vanishes during flares, and meanwhile, the umbral cores and/or inner penumbral regions are darkened. To understand the underlying physics of these observations, we compare the magnetic inclination angle in the decayed peripheral and the enhanced inner penumbral regions before and after the 4B/X3.4 flare of 2006 December 13 by using the high-resolution vector magnetograms from Hinode. We find that the mean inclination angle in the decayed penumbra increases after the flare while that in the enhanced penumbra near flaring neutral line decreases. The result confirms the previous idea that two components of a δ sunspot become connected after flares. As a result of new connection, peripheral penumbral fields change from a more inclined to a more vertical configuration and transverse fields in umbral core and inner penumbral regions increase substantially (Liu et al. 2005). The flare-associated changes of Doppler width as well as other parameters (the transverse field strength, continuum intensity and filling factor) are also presented. | LI YiXuan JING Ju TAN ChangYi WANG HaiMin | 2009 | Science China(Physics,Mechanics & Astronomy)2009，52，11： | 2 |
| 14 | Equalization of Ti 6Al 4V alloy welded joint by scanning electron beam welding显示文摘The equalization of Ti 6Al 4V alloy welded joint with base metal on corrosion resistance, strength and ductility was studied. The solidification microstructure is transformed from 650 μm columnar grains to 100 μm equiaxed grains by scanning electron beam welding. The anodic polarization curve of 150 μm equiaxed grains coincides with that of base metal. Equal corrosion resistance between weld metal and base metal was obtained. Uniform microstructure and solute distribution are the basis of equalization. Corrosion rate of weld with 150 μm equiaxed grains is the lowest, 2.45 times lower than that of 650 μm columnar grains. Weld strength is 98% as much as that of base metal, yield strength ratio is 99.5%, which is 3.6% higher than that of base metal. | Chen Xiaofeng(陈晓风) Han Zhong(韩忠) Lou Xinfang(楼新芳) Hu Chuanshun(胡传顺) Sun Changyi(孙长义) | 1999 | 中国有色金属学会会刊:英文版1999，9，3： | 2 |
| 15 | Geochronology,Petrology and Geochemistry of Xingdi No.3 Mafic-Ultramafic Intrusions in the Northeastern Tarim Craton,NW China显示文摘The Xingdi mafic-ultramafic intrusions occur in the northeastern margin of the Tarim craton. The Xingdi No. 3 intrusion is the smallest of four intrusions, with an exposed area of 1.7 km^2, and the zircon U-Pb age of the intrusion is 752±4 Ma. The intrusion consists of gabbros, pyroxenites and peridotites, and exhibits a crystallization sequence of the main rock-forming minerals as olivine, orthopyroxene, clinopyroxene and plagioclase. Mineralization occurred at or near the boundaries of the intrusion between pyroxenites and peridotites, and appears as a layered or lenticular shape about 500 m long and 4–15 m wide. The primary sulfides have a relatively simple mineralogy dominated by pyrrhotite-pentlandite-chalcopyrite assemblages, which occur as droplet, star-like and graphic texture and locally sideronitic structures. Geochronological and geochemistry investigations suggest that the Xingdi mafic-ultramafic intrusions and coeval volcanic rock in the Kuluktag area of the Tarim craton formed in an intracontinental breakup environment. Based on the composition of the dominant rockforming minerals and covariant relationships of other oxides versus Mg O, the parental magma of the Xingdi No.3 intrusion belongs to high-Mg tholeiitic basaltic magmas with Mg O of 10.78 wt%. The Xingdi No.3 intrusive rocks are characterized by light REE enrichment relative to heavy REE, negative Nb-Ta anomalies, low ^(143)Nd/^(144)Nd ratios(from 0.511183 to 0.511793) and high initial ^(87)Sr/^(86)Sr ratios(from 0.7051 to 0.7113). The magma was derived from the enriched-lithospheric mantle and was contaminated during emplacement. According to rock assemblages, mineralization, olivine characteristics, geochemical characteristics and mass balance, there are better copper-nickel ore prospects in the Xingdi No.3 intrusion than in the other three intrusions in the area. | XIA Zhaode XIA Mingzhe JIANG Changyi | 2017 | Acta Geologica Sinica(English Edition)2017，91，2： | 2 |
| 16 | Types of Organic Fades and Source Rock Assessment of the Coal-Measure Mudstone in the Turpan-Hami Basin显示文摘This paper discusses the enviromental characteristics of carbonaceous mudstone and mudstone (coal-measure mudstone in short) of the Early and Middle Jurassic in the Turpan-Hami basin, which were formed in swamps. Through the organic facies study of the coal-measure mudstone in this area, the authors clarify that the flowing-water swamp is the most advanced organic facies belt. Furthermore, according to the practical materials of coal-measure mudstone in the area and with the evaluation criteria of lacustrine mudstone in the past, the authors have established the integrated symbol systems from the abundance of organic matter and the type of organic matter, which can be used in the source rock evaluation of the coal-measure mudstone. | ZHAO Changyi, DU Meili, SHAO Longyi, CHEN Jianping,CHENG Kerning and HE ZhonghuaResearch Institute of Petroleum Exploration and Development,China National Petroleum Corporation, 20 Xueyuan Rd., Beijing 100083Beijing Graduate School of China University of Mining and Technology,11 Xueyuan Rd., Beijing 100083 | 1998 | Acta Geologica Sinica(English Edition)1998，72，2： | 2 |
| 17 | Determining the Main Gas-generation Phase of Marine Organic Matters in Different Occurrence States using the Kinetic Method显示文摘摘要:这份报纸用运动方法探查海洋的器官的冰铜的主要煤气产生的阶段的决心。海洋的有机物的主要煤气产生的阶段被典型海洋的有机物的获得的运动参数计算的地质的历史上联合煤气的产生收益和率决定(水库油,剩余沥青,低成熟的 kerogen 和剩余 kerogen )在由 EasyRo (%)方法的中国和国外和成熟。这里,主要煤气产生的阶段为类型作为 Ro%=1.4%2.4% 被决定我 kerogen,为低成熟的类型 II kerogen 的 Ro%=1.53.0% ,为剩余 kerogen 的 Ro%=1.42.8% ,为剩余沥青的 Ro%=1.53.2% 和为水库油裂开的 Ro%=1.63.2% 。对从模仿的系统的坦诚和天然气产生的死了的线的主要煤气产生的阶段的影响也被讨论。结果显示模拟系统的坦诚在计算主要煤气产生的阶段上有明确的影响。类型 II kerogen 的主要煤气产生的阶段是在一个开的系统的 Ro%=1.43.1% ,它在一个封闭系统是比那早的。根据我们的结果,天然气产生的死了的线为类型作为 Ro=3.5% 被决定我 kerogen,为类型 II kerogen 的 Ro=4.44.5% 和为海洋的油的 Ro=4.6% 。初步的应用被介绍作为一个例子拿西南的 Tarim 盆。 | WANG Yunpeng ZHAO Changyi WANG Zhaoyun WANG Hongjun ZOU Yanrong LIU Jinzhong ZHAO Wenzhi LIU Dehan LU Jialan | 2008 | Acta Geologica Sinica(English Edition)2008，82，1： | 2 |
| 18 | Analysis of well casing connection pullout显示文摘 | Lu Shuanlu Han Yong Terry Changyi Qin Yuan Pengbin | 2005 | Engineering Failure Analysis2005，，4： | 2 |
| 19 | A Tumorigenic Factor Interactome Connected through Tumor Suppressor MicroRNA-198 in Human Pancreatic Cancer显示文摘 | Christian Marin-Muller Dali Li Uddalak Bharadwaj Min Li Changyi Chen Sally E. Hodges William E. Fisher Qianxing Mo Mien-Chie Hung Qizhi Yao | 2013 | Clinical Cancer Research2013，，21： | 2 |
| 20 | Ag_(3)PO_(4) decorated black urchin-like defective TiO_(2) for rapid and long-term bacteria-killing under visible light显示文摘Both phototherapy via photocatalysts and physical puncture by artificial nanostructures are promising substitutes for antibiotics when treating drug-resistant bacterial infectious diseases.However,the photodynamic therapeutic efficacy of photocatalysts is seriously restricted by the rapid recombination of photogenerated electron-hole pairs.Meanwhile,the nanostructures of physical puncture are limited to two-dimensional(2D)platforms,and they cannot be fully used yet.Thus,this research developed a synergistic system of Ag_(3)PO_(4) nanoparticles(NPs),decorated with black urchin-like defective TiO_(2)(BU-TiO_(2-X)/Ag_(3)PO_(4)).These NPs had a decreased bandgap compared to BU-TiO_(2-X),and BU-TiO_(2)-X/Ag_(3)PO_(4)(3:1)exhibited the lowest bandgap and the highest separation efficiency for photogenerated electron-hole pairs.After combination with BU-TiO_(2-X),the photostability of Ag_(3)PO_(4) improved because the oxygen vacancy of BU-TiO_(2-X) retards the reduction of Ag^(+) in Ag_(3)PO_(4) into Ag^(0),thus reducing its toxicity.In addition,the nanospikes on the surface of BU-TiO_(2-X) can,from all directions,physically puncture bacterial cells,thus assisting the hybrid’s photodynamic therapeutic effects,alongside the small amount of Ag^(+) released from Ag_(3)PO_(4).This achieves synergy,endowing the hybrid with high antibacterial efficacy of 99.76±0.15%and 99.85±0.09%against Escherichia coli and Staphylococcus aureus,respectively,after light irradiation for 20 min followed by darkness for 12 h.It is anticipated that these findings may bring new insight for developing synergistic treatment strategies against bacterial infectious diseases or pathogenic bacterial polluted environments. | Yingde Xu Xiangmei Liu Yufeng Zheng Changyi Li Kelvin Wai Kwok Yeung Zhenduo Cui Yanqin Liang Zhaoyang Li Shengli Zhu Shuilin Wu | 2021 | Bioactive Materials2021，6，6： | 2 |
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