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46篇 您的检索式:作者名="Yonghui Deng"
    题名 作者 年代 出处 被引量
1Multi-type ant system algorithm for the time dependent vehicle routing problem with time windows显示文摘The time dependent vehicle routing problem with time windows(TDVRPTW) is considered. A multi-type ant system(MTAS) algorithm hybridized with the ant colony system(ACS)and the max-min ant system(MMAS) algorithms is proposed. This combination absorbs the merits of the two algorithms in solutions construction and optimization separately. In order to improve the efficiency of the insertion procedure, a nearest neighbor selection(NNS) mechanism, an insertion local search procedure and a local optimization procedure are specified in detail. And in order to find a balance between good scouting performance and fast convergence rate, an adaptive pheromone updating strategy is proposed in the MTAS. Computational results confirm the MTAS algorithm's good performance with all these strategies on classic vehicle routing problem with time windows(VRPTW) benchmark instances and the TDVRPTW instances, and some better results especially for the number of vehicles and travel times of the best solutions are obtained in comparison with the previous research.DENG Ye ZHU Wanhong LI Hongwei ZHENG Yonghui 2018Journal of Systems Engineering and Electronics2018,29,3:13
2Hollow TiO2-x porous microspheres composed of wellcrystalline nanocrystals for high-performance lithiumion batteries显示文摘Chun Wang Faxing Wang Yujuan Zhao Yuhui Li Qin Yue Yupu Liu Yong Liu Ahmed A. Elzatahry Abdullah Al-Enizi Yuping Wu Yonghui Deng Dongyuan Zhao 2016Nano Research2016,9,1:8
3Magnetic yolk-shell structured anatase-based microspheres loaded with Au nanoparticles for heterogeneous catalysis显示文摘磁性的蛋黄壳组织了基于锐钛矿的 microspheres 在磁铁矿粒子上通过连续、灵巧的大音阶的第五音胶化涂层被制作,由退火列在后面处理。在与金 nanoparticles 装载之上,获得的功能的磁性的 microspheres 在向苯乙烯氧化物与非凡的高变换(89.5%) 和选择(90.8%) 催化苯乙烯的 epoxidation 作为异构的催化剂显示出优异性能。这些迷人的材料的构造过程为创造另外的功能的 nanocomposites 展示许多含意,这被相信。Chun Wang Junchen Chen Xinran Zhou Wei Li Yong Liu Qin Yue Zhaoteng Xue Yuhui Li Ahmed A. Elzatahry Yonghui Deng Dongyuan Zhao 2015Nano Research2015,8,1:7
4Ordered porous metal oxide semiconductors for gas sensing显示文摘Among various gas sensing materials, metal oxide semiconductors have shown great potential as resistive type sensors. The ordered porous structural metal oxide semiconductors with well-defined meso-or macro-pores chemically synthesized via soft-templating method and nanocasting strategy have high porosity, highly interconnected pore channels and high surface area with enormous active sites for interacting with gaseous molecules. These features enable them good performance in gas sensing,including high sensitivity, fast response and recovery, good selectivity. This review gives a comprehensive summary about the porous metal oxides with focus on the synthesis methods, structure related properties, as well as the modification strategies for gas sensing improved performances.Xinran Zhou Xiaowei Cheng Yongheng Zhu Ahmed A. Elzatahry Abdulaziz Alghamdi Yonghui Deng Dongyuan Zhao 2018Chinese Chemical Letters2018,29,3:5
5Controllable synthesis of highly crystallized mesoporous TiO2/WO3 heterojunctions for acetone gas sensing显示文摘Mesoporous semiconducting metal oxides(SMOs)heterojunctions are appealing sensors for gas detecting.However,due to the different hydrolysis and condensation mechanism of every metal precursor and the contradiction between high crystallinity and high surface area,the synthesis of mesoporous SMOs heterojunctions with highly o rdered mesostructures,highly crystallized frameworks,and high surface area remains a huge challenge.In this work,we develop a novel'acid-base pair'adjusted solvent evaporation induced self-assembly(EISA)strategy to prepare highly crystallized ordered mesoporous TiO2/WO3(OM-TiO2/WO3)heterojunctions.The WCl6 and titanium isopropoxide(TIPO)are used as the precursors,respectively,which function as the'acid-base pair',enabling the coassembly with the structure directing agent(PEO-b-PS)into highly ordered meso structures.In addition,PEO-b-PS can be converted to rigid carbon which can protect the meso structures from collapse during the crystallization process.The resultant OM-TiO2/WO3 heterojunctions possess primitive cubic mesostructures,large pore size(~21.1 nm),highly crystalline frameworks and surface area(~98 m2/g).As a sensor for acetone,the obtained OM-TiO2/WO3 show excellent re sponse/recovery perfo rmance(3 s/5 s),good linear dependence,repeatability,selectivity,and long-term stability(35 days).Changyao Wang Yuhui Li Pengpeng Qiu Linlin Duan Wei Bi Yan Chen Dingyi Guo Yupu Liu Wei Luo Yonghui Deng 2020Chinese Chemical Letters2020,31,5:4
6Recyclable Fenton-like catalyst based on zeolite Y supported ultrafine,highly-dispersed Fe_2O_3 nanoparticles for removal of organics under mild conditions显示文摘A versatile wet impregnation method was employed to conveniently and controllably deposit Fe_2O_3 nanoparticles on zeolites including commercial Y, mordenite and ZSM-5 with the similar framework Si/Al ratios and crystal sizes, respectively. The ultrafine Fe_2O_3 nanoparticles in size of 5 nm can be highly dispersed on zeolite Y matrix due to its much better wettability than ZSM-5 and mordenite. By using the obtained Fe_2O_3/zeolite composite as the heterogeneous Fenton-like catalysts, the degradation of phenol as a model reaction was systematically investigated, including the zeolite supports, particle size and dispersion of Fe_2O_3, and reaction conditions of H_2O_2 concentration, temperature, and pH value. The catalyst based on zeolite Y with Fe loading of 9% exhibited the best phenol degradation efficiency (> 90%)in neutral pH within 2 h. Its high catalytic activity in Fenton reaction can be attributed to the bifunctional properties of strong surface BrФnsted acidity and high reactivity of octahedral Fe^(3+) in the highlydispersed ultrafine Fe_2O_3 nanoparticles in size of 5 nm, which were the primary active centers to quickly decompose H_2O_2 into hydroxyl radicals. Since phenol degradation can be performed under mild conditions of ambient temperature (283-323 K) and a wide pH range (4.0-7.0), the catalysts can be easily recovered for recyclable use with stable degradation activity, which own the immense potential in deep treatment of organic pollutants in industrial wastewater.Xuanyu Yang Xiaowei Cheng Ahmed A.Elzatahry Jinyang Chen Abdulaziz Alghamdi Yonghui Deng 2019Chinese Chemical Letters2019,30,2:4
7Study on device simulation and performance optimization of the epitaxial crystalline silicon thin film solar cell显示文摘Because crystalline silicon thin film(CSiTF) solar cells possess the advantages of crystalline silicon solar cells such as high efficiency and stable performance and those of thin film solar cells such as low cost and so on,it is regarded as the next generation solar cell technology,which is most likely to replace the existing crystalline silicon solar cell technology.In this paper,we performed device simulation on the epitaxial CSiTF solar cell by using PC1D software.In order to make simulation results closer to the actual situation,we adopted a more realistic device structure and parameters.On this basis,we comprehensively and systematically investigated the effect of physical parameters of back surface field(BSF) layer,base and emitter,electrical quality of crystalline silicon active layer,situation of surface passivation,internal recombination and p-n junction leakage on the optoelectronic performance of the epitaxial CSiTF solar cell.Among various factors affecting the efficiency of the epitaxial CSiTF solar cell,we identified the three largest efficiency-affecting parameters.They are the base minority carrier diffusion length,the diode dark saturation current and the front surface recombination velocity in order.Through simulations,we found that the base is not the thicker the better,and the base minority carrier diffusion length must be taken into account when determining the optimal base thickness.When the base minority carrier diffusion length is smaller,the optimal base thickness should be less than or equal to the base minority carrier diffusion length;when the base minority carrier diffusion length is larger,the base minority carrier diffusion length should be at least twice the optimal base thickness.In addition,this paper not only illustrates the simulation results but also explains their changes from the aspect of physical mechanisms.Because epitaxial CSiTF solar cells possess a device structure that is similar to crystalline silicon solar cells,the conclusions drawn in this paper are also applied to crystalline silicon solar cells to a certain extent,particularly to thin silicon solar cells which are the hottest research topic at present.AI Bin ZHANG YongHui DENG YouJun SHEN Hui 2012Science China(Technological Sciences)2012,55,11:4
8Recent advance in synthesis and application of heteroatom zeolites显示文摘Incorporation of heteroatoms into the framewo rk of zeolites has become a significant strategy to improve their performance in catalysis and adsorption,because the obtained heteroatom zeolites exhibit quite different properties from the conventional aluminosilicate zeolites in aspects of surface acidity,pore structures,particle size and so on.In this review,the progress on the heteroatom zeolites including their synthesis and application is highlighted.First,the recent advance on the design and synthesis of different heteroatom zeolites is summarized.Special emphasis is placed on the introduction and comparison of three typical methods,including the direct synthesis,post synthesis and improved direct synthesis,for the traditional heteroatom zeolites(such as TS-1,Sn-MFI,Sn-β) and newly-reported heteroatom zeolites(such as W-MFI,Mo-MFI).According to their intrinsic characteristics,the application of heteroatom zeolites in diverse fields,such as production of fine chemicals,air pollution control and biomass conversion is then discussed.Finally,the challenges and perspective on the future development of heteroatom zeolites in low-cost preparation and practical application are proposed.Tingting Pang Xuanyu Yang Chenyi Yuan Ahmed A.Elzatahry Abdulaziz Alghamdi Xing He Xiaowei Cheng Yonghui Deng 2021Chinese Chemical Letters2021,32,1:2
9Nanoengineered hydrogels as 3D biomimetic extracellular matrix with injectable and sustained delivery capability for cartilage regeneration显示文摘The regeneration of articular cartilage remains a great challenge due to the difficulty in effectively enhancing spontaneous healing.Recently,the combination of implanted stem cells,suitable biomaterials and bioactive molecules has attracted attention for tissue regeneration.In this study,a novel injectable nanocomposite was rationally designed as a sustained release platform for enhanced cartilage regeneration through integration of a chitosan-based hydrogel,articular cartilage stem cells(ACSCs)and mesoporous SiO_(2)nanoparticles loaded with anhydroicaritin(AHI).The biocompatible engineered nanocomposite acting as a novel 3D biomimetic extracellular matrix exhibited a remarkable sustained release effect due to the synergistic regulation of the organic hydrogel framework and mesopore channels of inorganic mSiO_(2)nanoparticles(mSiO_(2)NPs).Histological assessment and biomechanical tests showed that the nanocomposites exhibited superior performance in inducing ACSCs proliferation and differentiation in vitro and promoting extracellular matrix(ECM)production and cartilage regeneration in vivo.Such a novel multifunctional biocompatible platform was demonstrated to significantly enhance cartilage regeneration based on the sustained release of AHI,an efficient bioactive natural small molecule for ACSCs chondrogenesis,within the hybrid matrix of hydrogel and mSiO_(2)NPs.Hence,the injectable nanocomposite holds great promise for use as a 3D biomimetic extracellular matrix for tissue regeneration in clinical diagnostics.Penglei Cui Panpan Pan Ling Qin Xinluan Wang Xiaodong Chen Yonghui Deng Xiaoling Zhang 2023Bioactive Materials2023,,1:2
10Sulfonic acid-functionalized core-shell Fe_(3)O_(4)@carbon microspheres as magnetically recyclable solid acid catalysts显示文摘Green and recyclable solid acid catalysts are in urgent demand as a substitute for conventional liquid mineral acids.In this work,a series of novel sulfonic acid-functionalized core-shell Fe_(3)O_(4)@carbon microspheres(Fe_(3)O_(4)@C-SO_(3)H)have been designed and synthesized as an efficient and recyclable heterogeneous acid catalyst.For the synthesis,core-shell Fe_(3)O_(4)@RF(resorcinol-formaldehyde)microspheres with tunable shell thickness were achieved by interfacial polymerization on magnetic Fe_(3)O_(4)microspheres.After high-temperature carbonization,the microspheres were eventually treated by surface sulfonation,re sulting in Fe_(3)O_(4)@C-x-SO_(3)H(x stands for carbonization temperature)microspheres with abundant surface SO_(3)H groups.The obtained microspheres possess uniform core-shell structure,partially-graphitized carbon skeletons,superparamagnetic property,high magnetization saturation value of 10.6 emu/g,and rich SO_(3)H groups.The surface acid amounts can be adju sted in the range of 0.59-1.04 mmol/g via sulfonation treatment of carbon shells with different graphitization degrees.The magnetic Fe_(3)O_(4)@C-x-SO_(3)H microspheres were utilized as a solid acid catalyst for the acetalization reaction between benzaldehyde and ethylene glycol,demonstrating high selectivity(97%)to benzaldehyde ethylene glycol acetal.More importantly,by applying an external magnetic field,the catalysts can be easily separated from the heterogeneous reaction solutions,which later show well preserved catalytic activity even after 9 cycles,revealing good recyclability and high stability.Chenyi Yuan Xiqing Wang Xuanyu Yang Abdulaziz AAlghamdi Fahad AAlharthi Xiaowei Cheng Yonghui Deng 2021Chinese Chemical Letters2021,32,6:2
11Superparamagnetic High-Magnetization Microspheres with an Fe3O4@SiO2 Core and Perpendicularly Aligned Mesoporous SiO2 Shell for Removal of Microcystins显示文摘Deng Yonghui Qi Dawei Deng Chunhui 0,,1:1
12Triflic Acid-Functionalized Silica-Coated Magnetic Nanoparticles as a Magnetically Separable Catalyst for Synthesis of gem-Dihydroperoxides显示文摘Liu Yonghui Deng Jia Gao Jianwu 0,,3:1
13Investigation of formation of silica-coated magnetite nanoparticles via sol gel approach 显示文摘Deng Yonghui Wang Changchun Yang Wuli 2005Colloids and Surfaces A2005,262,:1
14All-Solid-State Thin-Film Lithium-Sulfur Batteries显示文摘Lithium-sulfur(Li-S)system coupled with thin-film solid electrolyte as a novel high-energy micro-battery has enormous potential for complementing embedded energy harvesters to enable the autonomy of the Internet of Things microdevice.However,the volatility in high vacuum and intrinsic sluggish kinetics of S hinder researchers from empirically integrating it into allsolid-state thin-film batteries,leading to inexperience in fabricating all-solid-state thin-film Li-S batteries(TFLSBs).Herein,for the first time,TFLSBs have been successfully constructed by stacking vertical graphene nanosheets-Li2S(VGsLi2S)composite thin-film cathode,lithium-phosphorous-oxynitride(LiPON)thin-film solid electrolyte,and Li metal anode.Fundamentally eliminating Lipolysulfide shuttle effect and maintaining a stable VGs-Li2S/LiPON interface upon prolonged cycles have been well identified by employing the solid-state Li-S system with an“unlimited Li”reservoir,which exhibits excellent longterm cycling stability with a capacity retention of 81%for 3,000 cycles,and an exceptional high temperature tolerance up to 60℃.More impressively,VGs-Li2S-based TFLSBs with evaporated-Li thin-film anode also demonstrate outstanding cycling performance over 500 cycles with a high Coulombic efficiency of 99.71%.Collectively,this study presents a new development strategy for secure and high-performance rechargeable all-solid-state thin-film batteries.Renming Deng Bingyuan Ke Yonghui Xie Shoulin Cheng Congcong Zhang Hong Zhang Bingan Lu Xinghui Wang 2023Nano-Micro Letters2023,15,5:1
15Rational construction of self-assembly azobenzene derivative monolayers with photoswitchable surface properties显示文摘Photo-responsive azobenzene(ABZ) derivatives with different end groups(R) as photoswitchable molecules were employed to construct self-assembled monolayers(SAMs) on silicon substrate by using3-glycidoxypropyltrimethoxysilane(GPTS) as the bridging molecules. The assembly process was optimized by changing various parameters, including the type and concentration of ABZ derivatives,reaction time, etc. The obtained SAMs were fully characterized and evaluated using UV spectroscopy,atomic force microscope(AFM), elllipsometer, static contact angle and X-ray photoelectron spectroscopy(XPS). It is found that the end group property of azobenzene derivatives is critical to the obtained SAMs' photoresponsive properties. Compared with hydrophobic compounds(4-(4'-aminophenylazo) benzoic acid, ABZ-CF_3),the hydrophilic compounds(4-(4'-aminophenylazo) benzoic acid, ABZ-COOH) show excellent reversible photoswitching performance with a large contact angle change of 35° under optimized process, and the SAMs are removable by thermal treatment at 240℃ in air for only 5 min.Yu Zhang Peng Gao Qin Yue Peter Trefonas Yonghui Deng 2018Chinese Chemical Letters2018,29,11:1
16Investigation of formation of silica-coated magnetite nanoparticles via sol-gel approach 显示文摘Deng Yonghui Wang Changchun Hu Jianhua 2005Colloids Surf A : Phys Eng Asp2005,262,123:1
17Su-perparamagnetic high-magnetization microspheres with an Fe 3 O 4/SiO 2 core and perpendicularly aligned mesoporous SiO 2 shell for removal of microcrytins显示文摘DENG Yonghui QI Dawei DENG Chunhui 2008J Am Chem Soc2008,130,1:1
18Ultra-thin CoAl layered double hydroxide nanosheets for the construction of highly sensitive and selective QCM humidity sensor显示文摘To achieve real-time monitoring of humidity in various applications,we prepared facile and ultra-thin CoAl layered double hydroxide(CoAl LDH)nanosheets to engineer quartz crystal microbalances(QCM).The characteristics of CoAl LDH were investigated by transmission electron microscopy(TEM),X-ray diffraction(XRD),X-ray photoelectric spectroscopy(XPS),Brunauer–Emmett–Telle(BET),atomic force microscopy(AFM)and zeta potential.Due to their large specific surface area and abundant hydroxyl groups,CoAl LDH nanosheets exhibit good humidity sensing performance.In a range of 11.3%and 97.6%relative humidity(RH),the sensor behaved an ultrahigh sensitivity(127.8 Hz/%RH),fast response(9.1 s)and recovery time(3.1 s),low hysteresis(3.1%RH),good linearity(R^(2)=0.9993),stability and selectivity.Besides,the sensor can recover the initial response frequency after being wetted by deionized water,revealing superior self-recovery ability under high humidity.Based on in-situ Fourier transform infrared spectroscopy(FT-IR),the adsorption mechanism of CoAl LDH toward water molecules was explored.The QCM sensor can distinguish different respiratory states of people and wetting degree of fingers,as well as monitor the humidity in vegetable packaging,suggesting excellent properties and a promising application in humidity sensing.Yongheng Zhu Xuhua Dong Jinsheng Cheng Lumin Wang Cheng Zhao Yonghui Deng Siqi Xie Yingjie Pan Yong Zhao Gengzhi Sun Tianjun Ni 2023Chinese Chemical Letters2023,34,8:1
19A novel strategy for boosting the photoluminescence quantum efficiency of CdSe nanocrystals at room temperature显示文摘Highly luminescent colloidal nanocrystals have wide applications in bioimaging and various optoelectronic devices.Herein we report a facile and mild procedure by combining S2-treatment and binary ligand passivation,which can efficiently enhance the luminescent property of CdSe nanocrystals at room temperature.The photoluminescence quantum yield of as-treated CdSe nanocrystals exhibits drastic enhancement(e.g.,188 times for CdSe nanorods)after this dual-passivation treatment.The methodology proposed here can be applied to various CdSe nanocrystals,regardless of their sizes,shapes,and crystal structures.Biwei Wang Limin Liu Yi Zhang Yonghui Deng Angang Dong 2020Chinese Chemical Letters2020,31,1:1
20Magnetic 3-D ordered macroporous silica templated from binary colloidal crystals and its application for effective removal of microcystin显示文摘Jia Liu Yue Cai Yonghui Deng Zhenkun Sun Dong Gu Bo Tu Dongyuan Zhao 2009Microporous and Mesoporous Materials2009,,1:1
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