NiCoP高效协同增强CdS光催化析氢性能研究  

Synergistic Effect of NiCoP Modified CdS for Photocatalytic Hydrogen Evolution

作　　者：朱琼 张玉玲 廖运文[1,2] 高和军[1,2] ZHU Qiong;ZHANG Yu-ling;LIAO Yun-wen;GAO He-jun(Chemical Synthesis and Pollution Control Key Lab of Sichuan Province,China West Normal University,Nanchong Sichuan 637009,China;Institute of Applied Chemistry,China West Normal University,Nanchong Sichuan 637009,China)

机构地区：[1]西华师范大学化学合成与污染控制四川省重点实验室,四川南充637009 [2]西华师范大学应用化学研究所,四川南充637009

出　　处：《西华师范大学学报（自然科学版）》2022年第4期409-419,共11页Journal of China West Normal University(Natural Sciences)

基　　金：国家自然科学基金项目(52165015);四川省科技厅应用基础项目(2015JY0042)。

摘　　要：基于电荷行为调控,选择具有更多电化学反应中心的NiCo双金属磷化物作为助催化剂,通过简单的共沉淀法合成了NiCoP@CdS纳米复合材料并用于高效光催化制氢。通过SEM、XRD、XPS、UV-vis DRS、光电化学分析等手段研究了NiCoP对CdS光催化析氢反应性能的助催化作用。实验结果表明:NiCoP@CdS的最佳光催化氢气释放速率为9.96 mmol·g^(-1)·h^(-1),相当于纯CdS的30倍左右,在420 nm处的量子效率为21.55%。增强的光催化活性可以归因于CdS和NiCoP之间形成的核壳结构,该结构能有效地促进光生电荷的分离、转移,同时抑制了电子-空穴对的复合。Based on the regulation charge behavior,Nico bimetallic phosphide with more electrochemical reaction centers is selected as cocatalyst.NiCoP@CdS nanocomposites are successfully synthesized by simple coprecipitation method and used for efficient photocatalytic hydrogen production.The effect of NiCoP on the photocatalytic HER performance of CdS is studied by means of SEM,XRD,XPS,UV-Vis DRS and photoelectrochemical analysis.The experimental results show that the optimal photocatalytic hydrogen release rate of NiCoP@CdS is 9.96 mmol·g^(-1)·h^(-1),which is about 30 times that of pure CdS,and the quantum efficiency at 420 nm is 21.55%.The enhanced photocatalytic activity can be attributed to the core-shell structure formed between CdS and NiCoP,which can effectively promote the separation and transfer of photogenerated charges and inhibit the recombination of electron hole pairs at the same time.

关 键 词：光催化 析氢 CDS NiCoP 双金属磷化物 助催化剂 

分 类 号：O643.36[理学—物理化学]