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材料工程  2018, Vol. 46 Issue (6): 36-42    DOI: 10.11868/j.issn.1001-4381.2016.000591
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
Y掺杂量对N-BiVO4可见光催化活性的影响
王敏, 韩进, 张宇, 由美雁, 杨光俊, 柴天昱, 朱彤
东北大学 机械工程与自动化学院, 沈阳 110819
Effects of Y Doping Content on Visible-light Photocatalytic Property of N-BiVO4
WANG Min, HAN Jin, ZHANG Yu, YOU Mei-yan, YANG Guang-jun, CHAI Tian-yu, ZHU Tong
School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China
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摘要 以水稻秆为模板,采用溶胶-凝胶法制备Y掺杂N-BiVO4光催化剂。利用XPS,XRD,SEM,BET和UV-Vis DRS等手段对其进行表征和分析。结果表明:所制备的系列样品均为单斜白钨矿型BiVO4,Y掺杂并没有改变N-BiVO4催化剂的晶型;Y掺杂抑制了晶粒生长和团聚,导致N-BiVO4晶体粒径减小和比表面积增大,禁带宽度变窄和光吸收边红移。在可见光(λ ≥ 420nm)照射下,通过光催化降解偶氮胭脂红B(Azocarmine B,AZB),考察了Y掺杂量对N-BiVO4可见光催化活性的影响。其中6Y-N-BVO的光催化效果最好,50min后对偶氮胭脂红B的降解率达97%,较N-BVO(68%)和6Y-BVO(72%)有明显提高。
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王敏
韩进
张宇
由美雁
杨光俊
柴天昱
朱彤
关键词 水稻秆掺杂BiVO4偶氮胭脂红B    
Abstract:Y doped N-BiVO4 photocatalysts were synthesized by a sol-gel method using rice stem as template. The photocatalysts were characterized by XPS, XRD, SEM, BET and UV-Vis DRS methods. The results show that all samples are monoclinic phase and Y doping does not change the crystallinity of N-BiVO4. The addition of nitrogen and yttrium inhibits the growth of crystalline grain and reunion, which can decrease the average grain size and increase the specific area of N-BiVO4,and leds to narrower band-gap and red-shift of optical absorption band. The effects of doping component on photocatalytic activity are evaluated by measuring the degradation of azocarmine B under visible light irradiation. 6Y-N-BVO has an optimal photocatalytic effect and the degradation rate of AZB in 50min is 97%, which is much higher than that of N-BVO(68%) and 6Y-BVO(72%).
Key wordsrice stem    doping    bismuth vanadate    azocarmine B
收稿日期: 2016-05-15      出版日期: 2018-06-14
中图分类号:  O643  
通讯作者: 王敏(1975-),女,副教授,博士,研究方向:光催化材料及环境污染治理,联系地址:辽宁省沈阳市和平区文化路三巷11号东北大学机械工程与自动化学院(110819),E-mail:minwang62@msn.com,wangmin@me.neu.edu.cn     E-mail: minwang62@msn.com,wangmin@me.neu.edu.cn
引用本文:   
王敏, 韩进, 张宇, 由美雁, 杨光俊, 柴天昱, 朱彤. Y掺杂量对N-BiVO4可见光催化活性的影响[J]. 材料工程, 2018, 46(6): 36-42.
WANG Min, HAN Jin, ZHANG Yu, YOU Mei-yan, YANG Guang-jun, CHAI Tian-yu, ZHU Tong. Effects of Y Doping Content on Visible-light Photocatalytic Property of N-BiVO4. Journal of Materials Engineering, 2018, 46(6): 36-42.
链接本文:  
http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2016.000591      或      http://jme.biam.ac.cn/CN/Y2018/V46/I6/36
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