CdS/CdIn_2S_4:对希夫碱光合成具有优异光催化性能的一种新型异质结复合材料（英文）
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摘要
通过简单的溶剂热法制备一种新型CdS/CdIn_2S_4异质结光催化剂.结果表明CdS/CdIn_2S_4是一种具有大量纳米片组成的异质结构,在可见光照射下制备的CdS/CdIn_2S_4异质结构在苯甲醇和硝基苯耦合体系中合成希夫碱化合物具有优异的光催化性能,希夫碱产率分别是纯CdS和CdIn_2S_4样品的19.1和1.54倍.光催化活性提高的原因可归因于CdS和CdIn_2S_4异质结构的构建,从而导致光生载流子在空间上的有效分离.
A novel CdS/CdIn_2S_4heterojunction photocatalyst was fabricated via a simple solvothermal method.The transmission electron microscopy result shows that CdS/CdIn_2S_4has heterojunction structure with plenty of nanosheets.It can be found that the as-synthesized CdS/CdIn_2S_4heterostructure exhibits outstanding photocatalytic performance towards the photosynthesis of Schiff base compound in the coupled system of benzyl alcohol and nitrobenzene under visible light irradiation.The yield of Schiff base compound for CdS/CdIn_2S_4heterostructure is about19.1 and 1.54 times higher than that of pure CdS and CdIn_2S_4samples,respectively.The enhanced photocatalytic activity could be attributed to the construction of heterojunction structure,thus resulting in an efficient spatial separation of photogenerated charge carriers.
A novel CdS/CdIn_2S_4heterojunction photocatalyst was fabricated via a simple solvothermal method.The transmission electron microscopy result shows that CdS/CdIn_2S_4has heterojunction structure with plenty of nanosheets.It can be found that the as-synthesized CdS/CdIn_2S_4heterostructure exhibits outstanding photocatalytic performance towards the photosynthesis of Schiff base compound in the coupled system of benzyl alcohol and nitrobenzene under visible light irradiation.The yield of Schiff base compound for CdS/CdIn_2S_4heterostructure is about19.1 and 1.54 times higher than that of pure CdS and CdIn_2S_4samples,respectively.The enhanced photocatalytic activity could be attributed to the construction of heterojunction structure,thus resulting in an efficient spatial separation of photogenerated charge carriers.
引文
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[17]LIANG Qian,ZHAO Hua,NING Lichao,et al.InOCl nanosheets with exposed{001}facets:Synthesis,electronic structureand surprisingly high photocatalytic activity[J]. Appl Catal B:Environ,2014,152/153:390-396.
[2]FU Li,CAI Wen,WANG Aiwu,et al.Photocatalytic hydrogenation of nitrobenzene to aniline over tungsten oxide-silvernanowires[J]. Mater Lett,2015,142:201-203.
[3]YE Xiangju,CUI Yanjuan,QIU Xiaoqing,et al.Selective oxidation of benzene to phenol by Fe-CN/TS-1 catalysts undervisible light irradiation[J]. Appl Catal B:Environ,2014,152/153:383-389.
[4]DAI Xia,XIE Mengli,MENG Sugang,et al.Coupled systems for selective oxidation of aromatic alcohols to aldehydes and re-duction of nitrobenzene into aniline using CdS/g-C3N4photocatalyst under visible light irradiation[J]. Appl Catal B:Envi-ron,2014,158/159:382-390.
[5]JI Cong,DU Cui,STEINKRUGER J D,et al.In-situ hydrothermal fabrication of CdS/g-C3N4nanocomposites for enhancedphotocatalytic water splitting[J]. Mater Lett,2019,240:128-131.
[6]YE Xiangju,CHEN Yinghao,LING Cancan,et al.Chalcogenide photocatalysts for selective oxidation of aromatic alcohols toaldehydes using O2and visible light:A case study of CdIn2S4,CdS and In2S3[J]. Chem Eng J,2018,348:966-977.
[7]WU Yahui,YE Xiangju,ZHANG Sujuan,et al.Photocatalytic synthesis of Schiff base compounds in the coupled system ofaromatic alcohols and nitrobenzene using CdxZn1-xS photocatalysts[J]. J Catal,2018,359:151-160.
[8]ZHANG Sujuan,HUANG Weixin,FU Xianliang,et al.Photocatalytic organic transformations:Simultaneous oxidation of aro-matic alcohols and reduction of nitroarenes on CdLa2S4in one reaction system[J]. Appl Catal B:Environ,2018,233:1-10.
[9]SHEN Shaohua,ZHAO Liang,GUO Liejin. ZnmIn2S3+m(m=1~5,integer):A new series of visible-light-driven photocatalystsfor splitting water to hydrogen[J]. Int J Hydrogen Energy,2010,35:10148-10154.
[10]DAI Kai,LV Jiali,ZHANG Jinfeng,et al.Controlled synthesis of novel 3D CdS hierarchical microtremella for photocatalyt-ic H2production[J]. Mater Lett,2019,235:11-14.
[11]WANG Sibo,GUAN Buyuan,LU Yan,et al.Formation of hierarchical In2S3-CdIn2S4heterostructured nanotubes for effi-cient and stable visible light CO2reduction[J]. J Am Chem Soc,2017,139:17305-17308.
[12]NING Xiaofeng,MENG Sugang,FU Xianliang,et al.Efficient utilization of photogenerated electrons and holes for photocat-alytic selective organic syntheses in one reaction system using a narrow band gap CdS photocatalyst[J]. Green Chem,2016,18:3628-3639.
[13]ZHANG Guping,CHEN Dongyun,LI Najun. Preparation of ZnIn2S4nanosheetcoated CdS nanorod heterostructures for effi-cient photocatalytic reduction of Cr(VI)[J]. Appl Catal B:Environ,2018,232:164-174.
[14]YE Xiangju,CHEN Yinghao,LING Cancan,et al.One-pot synthesis of Schiff base compounds via photocatalytic reactionin the coupled system of aromatic alcohols and nitrobenzene using CdIn2S4photocatalyst[J]. Dalton Trans,2018,47:10915-10924.
[15]LI Weibing,FENG Chang,DAI Shiyuan,et al.Fabrication of sulfur-doped g-C3N4/Au/CdS Z-scheme photocatalyst to im-prove the photocatalytic performance under visible light[J]. Appl Catal B:Environ,2015,168/169:465-471.
[16]APTE S K,GARAJE S N,BOLADE R D,et al.Hierarchical nanostructures of CdIn2S4via hydrothermal and microwavemethods:efficient solar-light-driven photocatalysts[J]. J Mater Chem,2010,20:6095-6102.
[17]LIANG Qian,ZHAO Hua,NING Lichao,et al.InOCl nanosheets with exposed{001}facets:Synthesis,electronic structureand surprisingly high photocatalytic activity[J]. Appl Catal B:Environ,2014,152/153:390-396.