近日，我组研究生王肖同学在提高光催化剂光响应性及界面电荷传导特性方面取得突破进展，并将成果发表于国际SCI期刊“International
Journal of Energy Research”。
题目：High photoresponse and fast carrier mobility: Two-dimensional rGO-AgBr/Ag composite based on Z-scheme heterointerface with plasma for hydrogen evolution.
作者：Xiao Wang，Wei Li*，Shu-ao He，Qiong Ma，Bingchang Yan，Nan Meng，Lifen Hao
全文链接： https://onlinelibrary.wiley.com/doi/abs/10.1002/er.4908
简介：随着人们生活水平的提高，能源紧缺问题日益严峻。光催化技术被认为是解决这一问题的有效手段。然而，光响应性差及光激电子-空穴易复合是传统光催化剂普遍存在的科学问题。本课题将具有良好光敏化效应的AgBr锚定于还原氧化石墨烯（rGO）表面，通过一锅溶剂热法合成了一种二维rGO-AgBr/Ag光催化剂。由于Z型异质结（rGO-AgBr）的形成，光催化剂具有优越的长波长光波吸收及响应性，电子-空穴对复合被有效抑制，使其表现出显著增强的光催化产氢活性（72.71μmol h-1g-1）。本研究对于合成二维石墨烯基光催化剂具有理论指导意义。
图1 rGAA-α异质结光催化剂合成过程的示意图
图2 rGAA-2的TEM电镜照片(a-b)、EDX元素映射(c-f)和EDX光谱(g)
图3 催化剂催化性能及稳定性考察
图4 催化剂光-电化学性能
图5 催化剂催化产氢机理分析
参考文献：
[1] Dutta S, Biswas S, Maji RC, Saha R. Environmentally sustainable fabrication of Cu1.94S-rGO composite for dual environmental application: Visible-light-active photocatalyst and room-temperature phenol sensor. ACS Sustain. Chem. Eng. 2018; 6: 835-845.
[2] Brogan APS, Bui-Le L, Hallett JP. Non-aqueous homogenous biocatalytic conversion of polysaccharides in ionic liquids using chemically modified glucosidase. Nat. Chem. 2018; 10: 859-865.
[3] Lee D, Kim Y, Kwon Y, el al. Boosting the electrocatalytic glycerol oxidation performance
with highly-dispersed Pt nanoclusters loaded on 3D graphene-like microporous carbon. Appl. Catal. B-Environ. 2019; 245: 555-568.
[4] Chen Z, Mou K, Wang X, Liu L. Nitrogen-doped graphene quantum dots enhance the activity of Bi2O3 nanosheets for electrochemical reduction of CO2 in a wide negative potential
region. Angew. Chem. Int. Edit. 2018; 57: 12790-12794.
[5] Kumar P, Boukherroub R, Shankar K. Sunlight-driven water-splitting using two dimensional carbon based semiconductors. J. Mater. Chem. A. 2018; 6: 12876-12931.
编辑：何书熬，审核：马琼