摘要
采用逐次离子层交换吸附法,在TiO2薄膜表面先沉积CdS界面修饰层,再通过化学浴沉积法在TiO2/CdS薄膜表面沉积Sb2S3薄膜,将得到的TiO2/CdS/Sb2S3薄膜样品用于光催化研究.研究结果表明,利用CdS修饰TiO2/Sb2S3界面,薄膜光催化性能显著提高.由光电流-时间响应曲线发现,TiO2/CdS/Sb2S3薄膜样品可以产生更大的光电流,增强光催化性能.通过电化学阻抗谱和强度调制光电流/光电压谱表征等手段,发现利用CdS修饰TiO2/Sb2S3界面可以更好地促进电子和空穴从Sb2S3中分离,并减少复合,增强其光电流和光催化性能.
In this paper,we deposited CdS thin layer on the surface of TiO2 film by successive ion layer adsorption reaction method,and then the Sb2S3 film was deposited on the surface of TiO2/CdS film by chemical bath deposition method to obtain TiO2/CdS/Sb2S3 film for photocatalysis research.Results showed that the photocatalytic performance of TiO2/Sb2S3 was significantly improved after modification with CdS.The photocurrent-time response curve showed that the TiO2/CdS/Sb2S3 film sample could provide larger photocurrent,thereby enhancing its photocatalytic performance.Moreover,electrochemical impedance spectroscopy and intensity modulated photocurrent/photovoltage spectroscopy revealed that the CdS-modified TiO2/Sb2S3 interface could promote the separation of electrons and holes from Sb2S3 and reduce their recombination,leading to the enhanced photocatalytic performance and photocurrent.
作者
姜圆圆
肖铭星
邢洁
马荣荣
刘俊宏
吴璠
JIANG Yuanyuan;XIAO Mingxing;XING Jie;MA Rongrong;LIU Junhong;WU Fan(School of Science,Huzhou University,Huzhou 313000,China;Huzhou University Qiuzhen College,Huzhou 313000,China)
出处
《湖州师范学院学报》
2020年第10期25-30,共6页
Journal of Huzhou University
基金
国家自然科学基金项目(62004068,21607041)
浙江省自然科学基金项目(Y20F040001)
国家大学生创新创业训练计划项目(2020-29)
湖州师范学院大学生创新创业训练计划项目(202001096,202001122)
湖州师范学院求真学院大学生创新创业训练计划项目(202002001)
湖州市自然科学基金项目(2019YZ02)。
