典型文献
Ag2S Quantum Dots Decorated on Porous Cubic-CdS Nanosheets- assembled Flowers for Photocatalytic CO2 Reduction
文献摘要：
The production of renewable fossil fuels such as CH4 and CO by photocatalytic CO2 reduction has attracted more and more attention. However, single photocatalyst is less efficient for photocatalytic reduction of CO2 due to the fast recombination of photogenerated electron pairs. Herein, we success-fully prepare CdS-Ag2S composite by assembling the Ag2S QDs cocatalyst on the surface of CdS nanosheet-assembled flower through oil-bath solvothermal method. This composite is prepared through a simple self-assembly strategy using cadmium chloride, ammonia and thiourea as precursors of the CdS nanosheet-assembled flower and silver nitrate and 3-mercaptopropionic acid as the precursors of Ag2S QDs. The average diameter of Ag2S QDs is appar-ently 6.0 nm. The light absorption edge of the composite is at around 560 nm,with the corresponding band gap at 2.14 eV. The CdS-Ag2S QDs composite with 5 wt％ Ag2S QDs loaded achieves CO evolution rate of 16.6 μmol·g-1·h-1 without noble-metal cocatalysts. This strengthened photocatalytic performance and photocatalytic stability were attributed to the energy band broadening of Ag2S QDs caused by quantum size effect and the large specific surface area due to the assembled flower. The mechanism underlying the enhanced photocatalytic CO2 reduction activity is further proposed. This study demonstrates that semiconductor-based quantum dots are strong candidates for excellent cocatalysts in photocatalysis.
文献关键词：
中图分类号：
作者姓名：
Wei Fu;Jiajie Fan;Quanjun Xiang
作者机构：
State Key Laboratory of Electronic Thin Film and Integrated Devices,School of Electronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu 610054,China;School of Materials Science and Engineering,Zhengzhou University,Zhengzhou 450001,China
文献出处：
引用格式：
[1]Wei Fu;Jiajie Fan;Quanjun Xiang-.Ag2S Quantum Dots Decorated on Porous Cubic-CdS Nanosheets- assembled Flowers for Photocatalytic CO2 Reduction)[J].结构化学,2022(06):39-47
A类：
mercaptopropionic,ently
B类：
Ag2S,Quantum,Dots,Decorated,Porous,Cubic,CdS,Nanosheets,assembled,Flowers,Photocatalytic,Reduction,production,renewable,fossil,fuels,such,CH4,by,photocatalytic,reduction,has,attracted,more,attention,However,single,photocatalyst,less,efficient,due,fast,recombination,photogenerated,electron,pairs,Herein,success,fully,composite,assembling,QDs,surface,nanosheet,flower,through,oil,bath,solvothermal,method,This,prepared,simple,self,assembly,strategy,using,cadmium,chloride,ammonia,thiourea,precursors,silver,nitrate,acid,average,diameter,appar,light,absorption,edge,around,corresponding,band,gap,eV,wt,loaded,achieves,evolution,without,noble,metal,cocatalysts,strengthened,performance,stability,were,attributed,energy,broadening,caused,quantum,size,effect,large,specific,area,mechanism,underlying,enhanced,activity,further,proposed,study,demonstrates,that,semiconductor,dots,strong,candidates,excellent,photocatalysis
AB值：
0.56512
相似文献
机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
