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直接Z型Zn2SnO4-xNx/ZnO1-yNy异质结光催化剂的制备及机理
引用本文:王敏,谈国强,张丹,李斌,王颖,党明月,任慧君,夏傲,刘运.直接Z型Zn2SnO4-xNx/ZnO1-yNy异质结光催化剂的制备及机理[J].无机化学学报,2019,35(9):1551-1560.
作者姓名:王敏  谈国强  张丹  李斌  王颖  党明月  任慧君  夏傲  刘运
作者单位:陕西科技大学材料科学与工程学院无机材料绿色制备与功能化陕西省重点实验室;陕西科技大学文理学院;陕西科技大学电子信息与人工智能学院
基金项目:国家自然科学基金(No.51772180)、科技部重大研究项目(No.2017YFC0210803)和陕西科技大学研究生创新基金(No.SUST-A04)资助项目。
摘    要:采用微波溶剂热法成功制备直接Z型Zn_2SnO_(4-x)N_x/ZnO_(1-y)N_y核壳结构异质结光催化剂。2种物质不同的功函数改变了其表面电荷密度,并在界面处形成内建电场,导致其从传统的Ⅰ型镶嵌异质结转变为Ⅱ型异质结,再转变为Z型异质结构。N杂质原子替代O原子进入Zn_2SnO_4和ZnO的晶格,在两者的价带(VB)顶部形成双杂质能级。核壳结构的Z型异质结光催化剂对罗丹明B的降解速率为纯相Zn_2SnO_(4-x)N_x的1.40~1.43倍,同时具有良好的循环稳定性,且可以降解亚甲基蓝、甲基橙、水杨酸等污染物。Z型异质结的形成使其光生电子-空穴对具有较强的氧化还原能力,而双杂质能级的存在可以拓宽其光响应范围并提高载流子的分离效率。因此,Zn_2SnO_(4-x)N_x/ZnO_(1-y)N_y异质结光催化剂高的光催化活性归因于Z型异质结和双杂质能级的协同作用。

关 键 词:光催化  氮掺杂  Z型  Zn2SnO4-xNx  ZnO1-yNy
收稿时间:2019/3/17 0:00:00
修稿时间:2019/5/21 0:00:00

Synthesis and Mechanism of Direct Z-Scheme Zn2SnO4-xNx/ZnO1-yNy Heterojunction Photocatalyst
WANG Min,TAN Guo-Qiang,ZHANG Dan,LI Bin,WANG Ying,DANG Ming-Yue,REN Hui-Jun,XIA Ao and LIU Yun.Synthesis and Mechanism of Direct Z-Scheme Zn2SnO4-xNx/ZnO1-yNy Heterojunction Photocatalyst[J].Chinese Journal of Inorganic Chemistry,2019,35(9):1551-1560.
Authors:WANG Min  TAN Guo-Qiang  ZHANG Dan  LI Bin  WANG Ying  DANG Ming-Yue  REN Hui-Jun  XIA Ao and LIU Yun
Institution:Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, School of Materials Science and Engineering, Shaanxi University of Science & Technology, Xi''an 710021, China,Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, School of Materials Science and Engineering, Shaanxi University of Science & Technology, Xi''an 710021, China,Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, School of Materials Science and Engineering, Shaanxi University of Science & Technology, Xi''an 710021, China,Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, School of Materials Science and Engineering, Shaanxi University of Science & Technology, Xi''an 710021, China,Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, School of Materials Science and Engineering, Shaanxi University of Science & Technology, Xi''an 710021, China,Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, School of Materials Science and Engineering, Shaanxi University of Science & Technology, Xi''an 710021, China,School of Arts and Sciences, Shaanxi University of Science & Technology, Xi''an 710021, China,Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, School of Materials Science and Engineering, Shaanxi University of Science & Technology, Xi''an 710021, China and School of Electronic Information and Artificial Intelligence, Shaanxi University of Science & Technology, Xi''an 710021, China
Abstract:
Keywords:photocatalysis  nitrogen doping  Z-scheme  Zn2SnO4-xNx  ZnO1-yNy
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