S型异质结NiTiO_(3)/CdS光催化页岩气返排废水产氢性能研究  

Photocatalytic decomposition of shale gas flowback water producing hydrogen by S-scheme heterojunction NiTiO_(3)/CdS

作　　者：刘雪妍 谭文雯 王婧茹 张茹 徐龙君 刘成伦[1,2] LIU Xueyan;TAN Wenwen;WANG Jingru;ZHANG Ru;XU Longjun;LIU Chenglun(State Key Laboratory of Coal Mine Disaster Dynamics and Control,Chongqing University,Chongqing 400044,China;School of Chemistry and Chemical Engineering,Chongqing University,Chongqing 400044,China)

机构地区：[1]重庆大学煤矿灾害动力学与控制全国重点实验室,重庆400044 [2]重庆大学化学化工学院,重庆400044

出　　处：《燃料化学学报（中英文）》2024年第3期413-420,共8页Journal of Fuel Chemistry and Technology

基　　金：国家自然科学基金(52174157)资助。

摘　　要：本研究通过简单水热法制备出具有S型异质结构的NiTiO_(3)/CdS光催化材料。采用X射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、X射线光电子能谱(XPS)、比表面积分析及紫外-可见漫反射光谱(UV-vis DRS)等手段对光催化剂进行表征,并通过光催化页岩气返排废水产氢实验测试其产氢性能。结果表明,NiTiO_(3)和CdS两者成功复合,15%NiTiO_(3)/CdS表现出最强的产氢性能(1568.9μmol/(g·h))和优异的循环利用潜力。本研究对开发高效稳定的S型异质结光催化剂、废水的多效利用及缓解能源短缺具有重要意义。Constructing S-scheme heterojunction is an effective strategy to form photocatalytic materials with strong reduction property and improve photocatalytic performance.In this paper,NiTiO_(3)/CdS photocatalytic materials with S-scheme heterostructures were prepared by a simple hydrothermal method.The photocatalysts were characterized by X-ray diffraction(XRD),scanning electron microscope(SEM),transmission electron microscopy(TEM),X-ray photoelectron spectroscopy(XPS),specific surface area analysis and Ultraviolet-visible diffuse reflection spectroscopy(UV-vis DRS).The hydrogen production performance was tested by the photocatalytic hydrogen production experiment from shale gas flowback water.The results showed that NiTiO_(3)and CdS were successfully compounded.In addition,15%NiTiO_(3)/CdS showed the optimum hydrogen production performance(1568.9μmol/(g·h)),and excellent recycling potential.This work is of great significance for the exploration of efficient and stable photocatalysts with S-scheme heterojunctions,the efficient utilization of wastewater and the alleviation of energy shortages.

关 键 词：钛酸镍/硫化镉 异质结 光催化产氢 页岩气返排废水 

分 类 号：X703.1[环境科学与工程—环境工程]