文献类型：期刊文献

英文题名：ZnCo2S4/Zn0.2Cd0.8 S Z-scheme heterojunction: Efficient photocatalytic H2 evolution coupling selective oxidation of benzyl alcohol

作者：Li, Chunhe[1,2,3];Shan, Shunyi[2,3];Ren, Kuankuan[2,3];Dou, Weidong[2,3];He, Chunqing[1];Fang, Pengfei[1]

机构：[1]Wuhan Univ, Sch Phys & Technol, Key Lab Nucl Solid State Phys Hubei Prov, Wuhan 430072, Peoples R China;[2]Shaoxing Univ, Lab Low dimens Carbon Mat, Shaoxing 312000, Peoples R China;[3]Shaoxing Univ, Dept Phys, Shaoxing 312000, Peoples R China

年份：2022

卷号：47

期号：92

起止页码：38951

外文期刊名：INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

收录：SCI-EXPANDED(收录号：WOS:000883838200006)、、EI(收录号：20224112859131)、Scopus(收录号：2-s2.0-85139347917)、WOS

基金：The authors are thankful for the support of Postdoctoral Sci- ence Foundation, China (No. 2021M692459) . The Natural Sci- ence Foundation of Zhejiang Province, China (Grant Nos. LQ21B030005 and LQ22A040001) . The National Key R & D Pro- gram of China (Grant No. 2019YFA0210003) .

语种：英文

外文关键词：Z -scheme heterojunction; Photocatalytic H 2 evolution; Benzyl alcohol oxidation

外文摘要：The Z-scheme heterojunction photocatalysts possess excellent photocatalytic activity benefitting from their properly matched edge potentials. In this work, ZnCo2S4 nano -particles are anchored on Zn0.2Cd0.8S solid solution nanowires and assembled into binary ZnCo2S4/Zn0.2Cd0.8S nanocomposites. The as-synthesized ZnCo2S4/Zn0.2Cd0.8S nano -composites act as bifunctional photocatalysts, which can be used for high-performance H2 production coupling synthesis of high-value-added benzaldehyde in low concentration benzyl alcohol solution. Under visible light irradiation, 20%-ZnCo2S4/Zn0.2Cd0.8S nano -composite shows the highest H2 evolution rate of 23.02 mmol g-1 h-1 in the first photo -catalytic cycle, which is 395.0 and 526.7 times higher than that of Zn0.2Cd0.8S and ZnCo2S4 under the same conditions. Eventually, after six-time cycles, the conversion rate and selectivity of benzyl alcohol oxidation to benzaldehyde are 54.3% and 92.2%, respectively. The enhancement of photocatalytic performance is mainly attributed to the Z-scheme heterojunction between ZnCo2S4 and Zn0.2Cd0.8S, which promote the separation and transfer of photogenerated charge carriers. This work provides strong support for the rational design of Z-scheme nano-heterojunction of highly efficient photocatalytic appli-cation in H2 evolution and fine chemicals production.(c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.