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11篇 您的检索式:作者名="Hongting SHENG"
    题名 作者 年代 出处 被引量
1Exposing Cu-rich {110} active facets in PtCu nanostars for boosting electrochemical performance toward multiple liquid fuels electrooxidation显示文摘In catalysis,tuning the structural composition of the metal alloy is known as an efficient way to optimize the catalytic activity.This work presents the synthesis of compositional segregated six-armed PtCu nanostars via a facile solvothermal method and their distinct composition-structure-dependent performances in electrooxidation processes.The alloy is shown to have a unique six arms with a Cu-rich dodecahedral core,mainly composed of {110} facets and exhibit superior catalytic activity toward alcohols electrooxidation compared to the hollow counterpart where Cu was selectively etched.Density functional theory (DFT) calculations suggest that the formation of hydroxyl intermediate (OH^*) is crucial to detoxify CO poisoning during the electrooxidation processes.The addition of Cu is found to effectively adjust the d band location of the alloy catalyst and thus enhance the formation of ^*OH intermediate from water splitting,which decreases the coverage of ^*CO intermediate.Our work demonstrates that the unique compositional anisotropy in alloy catalyst may boost their applications in electrocatalysis and provides a methodology for the design of this type catalyst.Liping Huang Wei Zhang Peng Li Yongbo Song Hongting Sheng Yuanxin Du Yang-Gang Wang Yuen Wu Xun Hong Yanhuai Ding Xiaoyou Yuan Manzhou Zhu 2019Nano Research2019,12,5:4
2Preparation and proton conductivity of acid-doped poly (5-vin-yhetrazole-co-acrylonitrile) 显示文摘Hongting Pu Sheng Ye 2006React Funct Polym2006,66,85:1
3Acylation of nitriles to β-ketonitriles catalyzed by a heterometallic alkoxide cluster of neodymium and sodium:NdNa_8(O^tBu)_(10)(OH)显示文摘Catalytic acylation of nitriles with esters in the presence of 10 mol% NdNa8(OtBu)10(OH) is developed.The procedure is suitable for both enolizable and nonenolizable esters and affords β-ketonitriles in moderate to high yields.The heterometallic alkoxide cluster NdNa8(OtBu)10(OH) is structurally characterized by X-ray diffraction,and a mechanism for the production of β-ketonitriles using the cluster is proposed and verified.LIU HaiDong LI Lan SHENG HongTing ZHU XueHua XU Fan SHEN Qi 2011Chinese Science Bulletin2011,56,13:1
4Preparation and Proton Con- ductivity of Acid-doped Poly (5-vinyltetrazole-co-acrylo- nitrile) 显示文摘Pu Hongting Ye Sheng 2006Reactive and Functional Polymers2006,66,8:1
5Monodispersed Au Pd nanoalloy: composition control synthesis and catalytic properties in the oxidative dehydrogenative coupling of aniline显示文摘A series of Au Pd@C nanoalloy catalysts with tunable compositions were successfully prepared by a co-reduction method. The use of borane-tert-butylamine complex as reductant and oleylamine as both solvent and reductant was very effective for the preparation of the monodispersed nanoalloy. We evaluated the catalytic activity of these Au Pd@C nanoalloys for oxidative dehydrogenative coupling of aniline, which showed better catalytic activity than equal amounts of sole Au@C or Pd@C catalyst. The Au1Pd3@C catalyst exhibited the best performance, indicating that the conversion and selectivity were improved along with the increase of Pd composition. However, if the Pd composition was too high in the Au Pd alloy, Au1Pd7@C achieved only 81% conversion in this reaction.Fangyu Fu Sen He Sha Yang Chen Wang Xun Zhang Peng Li Hongting Sheng Manzhou Zhu 2015Science China Chemistry2015,58,10:0
6Covalence bridge atomically precise metal nanocluster and metalorganic frameworks for enhanced photostability and photocatalysis显示文摘Metal nanoclusters(NCs)with precise structure and ultrasmall size have attracted great interests in catalysis.However,the poor stability has limited its large-scale use.Herein,we proposed the“covalence bridge”strategy to effectively connect atomically precise metal NCs and metal-organic frameworks.Benefiting from the covalent linkage,the synthesized UiO-66-NH2-Au25(LCys)18 showed outstanding stability after 16 h photocatalysis.Moreover,the covalence bridge created a strong metal-support interaction between the two components and provided an effective charge transport channel and thereby enhanced photocatalytic activity.UiO-66-NH2-Au25(L-Cys)18 displayed an exceptional photocatalytic H2 production rate,which is 21 and 90 times higher than that of UiO-66-NH2/Au25(PET)18(made by physically combination)and bare UiO-66-NH2,respectively.Thermodynamic and kinetic studies demonstrated that UiO-66-NH2-Au25(L-Cys)18 exhibited higher charge transfer efficiency,lower overpotential of water reduction and activation energy barrier compared with its counterparts.Aimin Yao Yuanxin Du Meng Han Yan Wang Jiashen Hu Qingtao Zhu Hongting Sheng Manzhou Zhu 2023Nano Research2023,16,1:0
7Design of bifunctional single-atom catalysts NiSA/ZIF-300 for CO_(2) conversion by ligand regulation strategy显示文摘Carbon-supported noble-metal-free single-atom catalysts(SACs)have aroused widespread interest due to their green chemistry aspects and excellent performances.Herein,we propose a“ligand regulation strategy”and achieve the successful fabrication of bifunctional SAC/MOF(MOF=metal-organic framework)nanocomposite(abbreviated NiSA/ZIF-300;ZIF=ZIF-8)with exceptional catalytic performance and robustness.The designed NiSA/ZIF-300 has a planar interfacial structure with the Ni atom,involving one S and three N atoms bonded to Ni(Ⅱ),fabricated by controllable pyrolysis of volatile Ni-S fragments.For CO_(2) cycloaddition to styrene epoxide,NiSA/ZIF-300 exhibits ultrahigh activity(turnover number(TON)=1.18×105;turnover frequency(TOF)=9830 molSC·mol_(Ni)^(-1)·h^(-1);SC=styrene carbonate)and durability at 70℃ under 1 atm CO_(2) pressure,which is much superior to Ni complex/ZIF,NiNP/ZIF-300,and most reported catalysts.This study offers a simple method of bifunctional SAC/MOF nanocomposite fabrication and usage,and provides guidance for the precise design of additional original SACs with unique catalytic properties.Wengang Fu Yapei Yun Hongting Sheng Xiaokang Liu Tao Ding Shuxian Hu Tao Yao Binghui Ge Yuanxin Du Didier Astruc Manzhou Zhu 2024Nano Research2024,17,5:0
8CW-YOLO: joint learning for mask wearing detection in low-light conditions显示文摘1 Introduction With the rapid progress of Artificial Intelligence(AI)technology in object detection and face recognition,deep learning methods for face mask wearing detection have become increasingly mature and continuously take into account the needs of efficiency and accuracy.However,these conventional detection methods mostly ignore the complexity of real-world application scenarios,such as extremely darkness and gloomy weather.These unfavorable conditions lead to a series of image degradations that seriously hamper machine vision tasks.Although camera parameter adjustment,auxiliary lighting,or pre-processing enhancement[1]can weaken these negative effects to some extent to promote the detection,they will also result in increased hardware and time costs.Mingqiang GUO Hongting SHENG Zhizheng ZHANG Ying HUANG Xueye CHEN Cunjin WANG Jiaming ZHANG 2023Frontiers of Computer Science2023,17,6:0
9Atomically precise coreless AuCu bimetallic nanoclusters for Ullmann C-O coupling显示文摘Bimetallic nanocluster with atomic precision has gained widespread attention due to its unique synergism.The coreless Au_(4)Cu_(5)bimetallic nanoclusters were selected as models to explore the relationship between their microstructure and performance,and compare with the coreless monometallic nanoclusters,core–shell nanoclusters,and single atom catalyst(SAC).The experimental results show that the coreless bimetallic nanocluster catalyst Au_(4)Cu_(5)/activated carbon(AC)exhibits high activity and stability in the Ullmann C–O coupling reaction,much higher than coreless monometallic nanoclusters(Au_(11)/AC and Cu_(11)/AC),core–shell nanoclusters(Au_(25)/AC,Cu_(25)/AC,and Au_(1)Cu_(24)/AC),and single atom catalysts(Au SAC and Cu SAC).Moreover,the coreless Au_(4)Cu_(5)/AC catalyst efficiently catalyzed the Ullmann C–O coupling of benzyl alcohol for the first time.This structure–activity relationship was successfully extended to other coreless bimetallic systems,such as Au_(4)Cu_(4)/AC nanocluster,and it is expected to provide new insights for the design of bimetallic catalysts with well-defined performance.Yapei Yun Lin Li Manman Zhou Meng Li Ningning Sun Haifeng Li Shan Jin Chunshan Zuo Hongting Sheng Manzhou Zhu 2023Nano Research2023,16,8:0
10An Efficient and Green Approach to Synthesizing Enamines by Intermolecular Hydroamination of Activated Alkynes显示文摘ZENG Ruijie SHENG Hongting RAO Bo FENG Yan WANG Hao SUN Yehua CHEN Man ZHU Manzhou 2015Chemical Research in Chinese Universities2015,31,2:0
11Properties of Aluminosilicate Glasses Prepared by Red Mud with Various [Al2O3]/[CaO] Mass Ratios显示文摘By introducing other oxide materials(SiO_2, Al_2O_3, CaO) into the red mud, all materials were melted into aluminosilicate glasses. On the basis of 17.2Fe_2O_3-5.7CaO-18.2Al_2O_3-50SiO_2-5.9Na_2O-3TiO_2 system glasses, [Al_2O_3]/[CaO] mass ratio changed further. For each sample, the assignment of IR absorption bands for aluminosilicate glasses was investigated by Fourier transform infrared spectroscopy and the glasstransition temperature and high temperature molten state were studied by differential scanning calorimetry. According to X-Ray diffraction and differential scanning calorimetry, the behavior of crystallization was analyzed. The results show that the glass structures of three-dimensional network are depolymerized and the amount of non-bridging oxygens increases gradually with network modifier CaO replacing network intermediate Al_2O_3 when [Al_2O_3]/[CaO] ratio of aluminosilicate glass decreases from 4.05 to 0.66, resulting in decreasing density, melting temperature, crystallization peak temperature and glass-transition temperature. As [Al_2O_3]/[CaO] mass ratio decreases, the concentration of crystallized phase maghemite(γ-Fe_2O_3) will increase which provides the possibility for production of black glass-ceramic further.常紫园 岳云龙 qu ya li sheng wu fengnian liu hongting 2018Journal of Wuhan University of Technology(Materials Science)2018,33,2:0
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