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| 1 | Hierarchical ZSM-11 with intergrowth structures:Synthesis,characterization and catalytic properties显示文摘Hierarchical ZSM-11 microspheres with intercrystalline mesoporous properties and rod-like crystals intergrowth morphology have been synthesized using a spot of tetrabutylammonium as a single template.XRD,FTIR,SEM,TEM and N2 adsorption analysis revealed that each individual particle was composed of nanosized rod crystals inserting each other and the intercrystalline voids existing among rods gave a significant mesopore size distribution.Steam treatment result demonstrated the excellent hydrothermal stability of samples.Various crystallization modes including constant temperature crystallization (one-stage crystallization) and two-stage temperature-varying crystallization with different 1st stage durations were investigated.The results suggested that the crystallization modes were mainly responsible for the adjustable particle size and textural properties of samples while the small amount of tetrabutylammonium bromide was mainly used to direct the formation of both ZSM-11 framework and its intergrowth morphology.Furthermore,the performance of optimal ZSM-11 as an active component for the catalytic pyrolysis of heavy oil was also investigated.Compared with the commercial pyrolysis catalyst,the hierarchical ZSM-11 catalyst exhibited a high selectivity to desired products(LPG+gasoline+diesel),as well as a much lower dry gas and coke yield,plus a high selectivity and yield of light olefins(C=3 C=4)and very poor selectivity to benzene.Therefore,fully open micropore-mesopore connectivity would make such hierarchically porous ZSM-11 zeolites very attractive for applications in clean petrochemical catalysis field. | Qingjun Yu Chaoyue Cui Qiang Zhang Jing Chen Yang Li Jinpeng Sun Chunyi Li Qiukai Cui Chaohe Yang Honghong Shan | 2013 | Journal of Energy Chemistry2013，22，5： | 10 |
| 2 | Simultaneous removal of gaseous CO and elemental mercury over Cu-Co modified activated coke at low temperature显示文摘Cu-Co multiple-oxides modified on HNO_3-pretreated activated coke(AC_(N))were optimized for the simultaneous removal of gaseous CO and elemental mercury(Hg^(0))at low temperature(<200℃).It was found that 2%CuOx-10%CoOx/AC_(N)catalyst calcined at 400℃resulted in the coexistence of complex oxides including CuO,Cu_2 O,Co_(3)O_(4,Co_(2)O_(3)and CoO phases,which might be good for the simultaneous catalytic oxidation of CO by Co-species and removal of Hg^(0)by Cu-species,benefiting from the synergistic catalysis during the electrointeraction between Go and Cu cations(CoO■Co_(3)O_(4)and Cu_(2)O■CuO).The catalysis removal of CO oxidation was obviously depended on the reaction temperature obtaining94.7%at 200℃,while no obvious promoting effect on the Hg^(0)removal(68.3%-78.7%).These materials were very substitute for the removal of CO and Hg^(0)from the flue gas with the conditions of 8-20 vol.%O_(2)and flue-gas temperature below 200℃.The removal of Hg^(0)followed the combination processes of adsorption and catalytic oxidation reaction via LangmuirHinshelwood mechanism,while the catalysis of CO abided by the Mars-van Krevelen mechanism with lattice oxygen species. | Fengyu Gao Hao Yan Xiaolong Tang Honghong Yi Shunzheng Zhao Qingjun Yu Shuquan Ni | 2021 | Journal of Environmental Sciences2021，33，3： | 3 |
| 3 | Mesoporous molecular sieve-based materials for catalytic oxidation of VOC: A review显示文摘As the main contributor of the formation of particulate matter as well as ozone, volatile organic compounds(VOCs) greatly affect human health and the environmental quality. Catalytic combustion/oxidation has been viewed as an efficient, economically feasible and environmentally friendly way for the elimination of VOCs. Supported metal catalyst is the preferred type of catalysts applied for VOCs catalytic combustion because of the synergy between active components and support as well as its flexibility in the composition. The presence of support not only plays the role of keeping the catalyst with good stability and mechanical strength, but also provides a large specific surface for the good dispersion of active components, which could effectively improve the performance of catalyst as well as decrease the usage of active components, especially the noble metal amount. Mesoporous molecular sieves, owing to their large surface area, unique porous structures, large pore size as well as uniform pore-size distribution, were viewed as superior support for dispersing active components. This review focuses on the recent development of mesoporous molecular sieve supported metal catalysts and their application in catalytic oxidation of VOCs. The effect of active component types, support structure, preparation method, precursors, etc. on the valence state, dispersion as well as the loading of active species were also discussed and summarized. Moreover, the corresponding conversion route of VOCs was also addressed.This review aims to provide some enlightment for designing the supported metal catalysts with superior activity and stability for VOCs removal. | Wei Gao Xiaolong Tang Honghong Yi Shanxue Jiang Qingjun Yu Xizhou Xie Ruijie Zhuang | 2023 | Journal of Environmental Sciences2023，，3： | 2 |
| 4 | Development of Mn-Si-MEL as a bi-functional adsorption-catalytic oxidation material for VOCs elimination显示文摘Mn-Si-MEL zeolite was developed as a bi-functional adsorption-catalytic oxidation material for volatile organic compounds(VOCs)elimination due to its good hydrophobicity&good organophileproperty brought by the substitution of Mn for Al in zeolite and the superior catalytic oxidation property endowed by the existence of Mn species.Various Mn-Si-MEL samples were obtained by introducing Mn to MEL crystallization system via different ways.It was found the incorporated Mn ways have a significant effect on the behavior of Mn being involved in the crystallization of MEL and finally influenced the distribution of Mn in zeolite as well the physicochemical properties of product zeolite.The seeding method(MnS2(Seed))is favorable for the good incorporation and uniform distribution of Mn in zeolite while both recrystallization method(Mn-S2(RC))and direct synthesis method(Mn-S2(DH))are favorable for obtaining more reducible Mn species and surface adsorbed oxygen species.The Mn amount incorporated into zeolite follows Mn-S2(RC)(1.96 wt%)>Mn-S2(Seed)(1.07 wt%)≈Mn-S2(DH)(0.97 wt%),the adsorption capacity of various samples follows Mn-S2(Seed)(83.3μmol/g)≈Mn-S2(RC)(82.1μmol/g)>Mn-S2(DH)(76.1μmol/g),while the catalytic oxidation ability of three samples follows Mn-S2(RC)≈Mn-S2(DH)>Mn-S2(Seed).Furthermore,Mn-S2(RC)which exhibits both superior adsorption capacity and catalytic oxidation ability shows good hydrophobicity and superior recyclability,demonstrating its great potential to be applied in the VOCs elimination by an enrichment-degradation route. | Qingjun Yu Yongchao Feng Jinghui Wei Xiaolong Tang Honghong Yi | 2022 | Chinese Chemical Letters2022，33，6： | 2 |
| 5 | Automatic quantitative study on the vibrational wave of human vocal folds via videokymography 显示文摘 | Qiu Qingjun Xu Keyin Yu Qilian | 2002 | Proc SPIE Electronic Imaging and Multimedia Technology III2002，4925，： | 1 |
| 6 | A polyethylene glycol (PEG) micro?uidic chip with nanostruetures for bacteria rapid pat- terning and detection 显示文摘 | Jinjiang Yu Zongbin Liu Qingjun Liu | 2009 | Sensors and Actuators A2009，154，： | 1 |
| 7 | Comparative study of tribological properties of insulated and conductive polyimide composites显示文摘Insulated polyimide(PI)composites filled with short glass fibers(SGF),polytetrafluoroethylene(PTFE),SiO2,and polyphenylene(PPL)are specially designed,prepared,and the tribological properties are systematically investigated with references to the special requirements for frictional materials used in ultrasonic motors.The hardness and thermal decomposition temperature of the insulated PI composites are comparable to that of conductive PI composites.However,these insulated materials present excellent friction and wear performance,especially under high loads and speeds.Scanning electron microscopy(SEM)analysis of the worn surface indicates that adhesive and fatigue wear dominate the wear mechanisms. | Jingfu SONG Yuanhao YU Gai ZHAO Jinhao QIU Qingjun DING | 2020 | Friction2020，8，3： | 1 |
| 8 | A novel approach to improve the electrochemical performances of layered LiNi1/3Co1/3Mn1/3O2 cathode by YPO4 surface coating显示文摘 | Bai Ying Chang Qingjun Yu Qi | 2013 | Electrochimica Acta2013，112，： | 1 |
| 9 | Discussion of modularize pattern for engineering construction显示文摘 | Yu Qingjun Pan Siming Chang Yanan | 2010 | China High-Tech Enter- prises2010，，12： | 1 |
| 10 | Study on the influ- ence of channel structure properties in the dehydration of glycerol to acrolein over H-zeolite catalysts显示文摘 | Gu Yunlei Cui Naiyun Yu Qingjun | 2012 | Applied Ca talysis A: General2012，，： | 1 |
| 11 | Study on the influence of channel structure properties in the dehydration of glycerol to acrolein over H-zeolite catalysts显示文摘 | Gu Yunlei Cui Naiyun Yu Qingjun | 2012 | Appl Catal A2012，，25： | 1 |
| 12 | Bioinspired Materials:From Distinct Dimensional Architecture to Thermal Regulation Properties显示文摘The structural evolutions of the organisms during the development of billions of years endow them with remarkable thermal-regulation properties,which have significance to their survival against the outer versatile environment.Inspired by the nature,there have been extensive researches to develop thermoregulating materials by mimicking and utilizing the advantages from the natural organisms.In this review,the latest advances in thermal regulation of bioinspired microstructures are summarized,classifying the researches from dimension.The representative materials are described with emphasis on the relationship between the structural features and the corresponding thermal-regulation functions.For one-dimensional materials,wild silkworm cocoon fibers have been involved,and the reasons for unique optical phenomena have been discussed.Pyramid cone structure,grating and multilayer film structure are chosen as typical examples of two-dimensional bionics.The excellent thermal performance of the three-dimensional network frame structures is the focus.Finally,a summary and outlook are given. | Xin Ling Maurice I.Osotsi Wang Zhang Yu Wu Qingjun Jin Di Zhang | 2023 | Journal of Bionic Engineering2023，20，3： | 1 |
| 13 | 预先低剂量X线照射对荷HepG2裸鼠的肿瘤抑制作用(英文)显示文摘Objective:The aim of this study was to discuss the effect of pre-low-dose X-ray radiation on P53,Bcl-2 and apoptosis of HepG2 cells in tumor-bearing nude mouse,and further explore the mechanism of low doses radiation.Methods:HepG2 cells were implanted subcutaneously into nude mice.14 days after the implanting,these mice were divided into 6 groups randomly,S group (sham-irradiation 0 cGy),D1 group (7.5 cGy,dosage rate=7.5 cGy/min),D2 group,(200 cGy,dosage rate=100 cGy/min),D1 + 2 h + D2 group,D1 + 6 h + D2 group and D1 + 12 h + D2 group.Tumor-bearing mice in each experimental group were executed at 24 h after the last irradiation.P53 and Bcl-2 were detected by immunohistochemical staining,the tumor tissues apoptosis were detected in site (Tunel).Results:Each combined exposure groups (D1 + 2 h + D2 group,D1 + 6 h + D2 group and D1 + 12 h + D2 group) compared with the D2 group,the percentages of positive P53 and Bcl-2 were decreased obviously,and the apoptotic indexs were increased (P < 0.01).Conclusion:Pre-low-dose radiation combined with the conventional radiation can increase the apoptosis of tumor tissues by decreasing the expression of P53 and Bcl-2,it can enhance the anti-tumor effect of conventional radiation,and it can have actual clinical significance on supporting radiotherapy. | Weihua Sun Hongsheng Yu Qingjun Shang | 2012 | The Chinese-German Journal of Clinical Oncology2012，11，6： | 1 |
| 14 | 低剂量脾照射对局部晚期非小细胞肺癌放疗患者免疫系统的影响(英文)显示文摘Objective: The aim of the research was to study the effects of low-dose splenic irradiation and radiotherapy on immune system of patients with locally advanced non-small cell lung cancer (NSCLC). Methods: Twelve cases of stage Ⅲ NSCLC in Tumor Radiotherapy Center of our hospital (the Affiliated Hospital of Medical College Qingdao University, China) were collected from July 2011 to July 2012; all patients were under 75 years old with clear pathology, measurable lesions and good personal statement. They were randomly divided into combined treatment group (D1+D2) and control group (D1). The control group (D1) only received radiotherapy to the chest; combined treatment group (D1+D2) received low-dose splenic irradiation plus conventional dose irradiation. Flow cytometry was used to detect the peripheral blood T lymphocyte immune indexes of patients before, during and after the treatment, classification by five blood cell analyzer was used to determine white blood cells, neutrophils, hemoglobin and platelet count. The radiation induced toxicity including esophagitis, pneumonia and gastrointestinal reaction was observed, as well as the dose when it happened. Results: There was no significant difference in the ratio between two groups in cells CD4+, CD8+ and CD4+/CD8+ after radiotherapy (P>0.05). There was no change in these indicators in combined treatment group after treatment (P>0.05), but it decreased in control group (P<0.05). There was no significant difference in the incidences of radiation esophagitis, pneumonia, gastrointestinal reactions and bone marrow suppression between two groups (P>0.05), but the patients in combined treatment group seemed to tolerate high dose well (P<0.05). Conclusion: Low-dose splenic irradiation combined with radiotherapy to the chest can alleviate the injury degree of acute radiation induced the toxicity of locally advanced NSCLC patients, through affect the patient's immune function. | Jun Liu Hongsheng Yu Qingjun Shang Chao Yan Peng Jiang Xiang Wang | 2013 | The Chinese-German Journal of Clinical Oncology2013，12，2： | 0 |
| 15 | DESIGN OF MICROPHYSIOMETER BASED ON MULTIPARAMETER CELL-BASED BIOSENSORS FOR QUICK DRUG ANALYSIS显示文摘Cellular metabolism arouses the changes of substance in extracellular physiological microenvironment,and the metabolic level reflects the physiological state of cells.This paper developed a novel microphysiometer automatic analysis instrument based on multiparameter cell-based biosensors for quick drug analysis.This study included the multiparameter cell-based biosensors,cell culture chamber,drug auto-injection detection and analysis.The analysis instrument was capable of real-time detection for the acidic product and other chemical parameters generated by the cellular metabolism in the micro-volume.Finally,the paper employs human breast cancer cell line MCF-7 and drug experiments to verify the performance of microphysiometer,and study effects of different drugs on cell metabolism.Further,the research explores drug analysis method of the multiparameter microphysiometer.The results showed that the cell-based microphysiometer system provides a utility platform for rapid,long-term and automatic cell physiological environment detection and drug analysis. | NING HU DA HA CHENGXIONG WU GONG CHENG HUI YU TIANXING WANG JIEYING WU HUA CAI QINGJUN LIU PING WANG | 2012 | Journal of Innovative Optical Health Sciences2012，5，1： | 0 |
| 16 | Research on microstructural evolution and dynamic recrystailization behavior of JB800 bainitic steel by FEM显示文摘Single pass compression tests were conducted on Gleeblel500 thermal simulator.The effect of different deformation pa- rameters on the grain size of dynamically re,crystallized anstenite was analyzed.A mathematical model of dynamic re,crystallization and a material database of JB800 steel,whose tensile strength is above 800 MPa,were set up.A subprogram was compiled using Fortran language and called by Marc finite element software.A thermal coupled elastoplastic finite element model was established to simulate the compression process.The grain size of recrystallized austenite obtained by different recrystallization models was simu- lated.The results show that the optimized dynamic recrystallization model of JB800 bainitic steel has a higher precision and yields good agreement with metaliographic observations. | Qingjun Chen Yonglin Kang Hao Yu Chunmei Wang Chengxiang Li | 2008 | Journal of University of Science and Technology Beijing2008，15，3： | 0 |
| 17 | Effects of C60 on the Glass Transition Temperature of Carbazole-based Photorefractive Polyphosphazenes显示文摘The bi-functional carbazole-based photorefractive polyphosphazenes with different content of C_(60)-doped were fabricated. The glass transition temperature(T_g) of these polymer composite materials was determined using a differential scanning calorimetric(DSC) method. According to the DSC measurement results with different heating rates, the variation of T_g and the active energy of glass transition(E_g) were analyzed in detail. The analysis results indicate that the transition region shifts to higher temperatures with increasing heating rate, and C_(60) content(below 1.0 wt%) can influence the T_g of photorefractive polyphosphazenes. The T_g first increases and then decreases with the C_(60) content(below 1.0 wt%). The probable causes of the influence of C_(60) on T_g was proposed. | 陈百利 CHEN Shufan LUO Xuan FANG Yu ZHANG Qingjun HUANG Chuanqun DENG Qinghua 吴卫东 | 2018 | Journal of Wuhan University of Technology(Materials Science)2018，33，4： | 0 |
| 18 | Morphology and valence state evolution of Cu:Unraveling the impact on nitric oxide electroreduction显示文摘Ammonia(NH3)serves as a critical component in the fertilizer industry and fume gas denitrification.However,the conventional NH3production process,namely the Haber-Bosch process,leads to considerable energy consumption and waste gas emissions.To address this,electrocatalytic nitric oxide reduction reaction(NORR)has emerged as a promising strategy to bridge NH3consumption to NH3production,harnessing renewable electricity for a sustainable future.Copper(Cu)stands out as a prominent electrocatalyst for NO reduction,given its exceptional NH3yield and selectivity.However,a crucial aspect that remains insufficiently explored is the effects of morphology and valence states of Cu on the NORR performance.In this investigation,we synthesized CuO nanowires(CuO-NF)and Cu nanocubes(Cu-NF)as cathodes through an in situ growth method.Remarkably,CuO-NF exhibited an impressive NH3yield of 0.50±0.02 mg cm^(-2)h^(-1)at-0.6 V vs.reversible hydrogen electrode(RHE)with faradaic efficiency of29,68%±1,35%,surpassing that of Cu-NF(0.17±0.01 mg cm^(-2)h^(-1),16.18%±1.40%).Throughout the electroreduction process,secondary cubes were generated on the CuO-NF surface,preserving their nanosheet cluster morphology,sustained by an abundant supply of subsurface oxygen(s-O)even after an extended duration of 10 h,until s-O depletion ensued.Conversely,Cu-NF exhibited inadequate s-O content,leading to rapid crystal collapse within the same timeframe.The distinctive current-potential relationship,akin to a volcano-type curve,was attributed to distinct NO hydrogenation mechanisms.Further Tafel analysis revealed the exchange current density(i0)and standard heterogeneous rate constant(k0)for CuO-NF,yielding 3.44×10^(-6)A cm^(-2)and 3.77×10^(-6)cm^(-2)s^(-1)when NORR was driven by overpotentials.These findings revealed the potential of CuO-NF for NO reduction and provided insights into the intricate interplay between crystal morphology,valence states,and electrochemical performance. | Ting Sun Fengyu Gao Ya Wang Honghong Yi Qingjun Yu Shunzheng Zhao Xiaolong Tang | 2024 | Journal of Energy Chemistry2024，91，4： | 0 |
| 19 | δ-MnO_(2) decorated layered double oxides in-situ grown on nickel foam towards electrothermal catalysis of n-heptane显示文摘Energy-saving and efficient monolithic catalysts are hotspots of catalytic purification of industrial gaseous pollutants.Here,we have developed an electrothermal catalytic mode,in which the ignition temperature required for the reaction is provided by Joule heat generated when the current flows through the catalyst.In this paper,Mn/NiAl/NF,Mn/NiFe/NF and Mn/NF metal-based monolithic catalysts were prepared using nickel foam (NF) as the carrier for thermal and electrothermal catalysis of n-heptane.The results indicated that Mn-based monolithic catalysts exhibit high activity in thermal and electrothermal catalysis.Mn/NiFe/NF achieve conversion of n-heptane more than 99%in electrothermal catalysis under a direct-current (DC) power of 6 W,and energy-saving is 54% compared with thermal catalysis.In addition,the results indicated that the introduction of NiAl (or NiFe) greatly enhanced the catalytic activity of Mn/NF,which attributed to the higher specific surface area,Mn3+/Mn4+,Ni3+/Ni^(2+),adsorbed oxygen species (Oads)/lattice oxygen species (Olatt),redox performance of the catalyst.Electrothermal catalytic activity was significantly higher than thermal catalytic activity before complete conversion,which may be related to electronic effects.Besides,Mn/NiFe/NF has good cyclic and long-term stability in electrothermal catalysis.This paper provided a theoretical basis for applying electrothermal catalysis in the field of VOCs elimination. | Chaoqi Chen Shunzheng Zhao Xiaolong Tang Honghong Yi Fengyu Gao Qingjun Yu Jun Liu Weixiao Wang Tian Tang Xianzheng Meng | 2023 | Journal of Environmental Sciences2023，，4： | 0 |
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