Page 47 - 《精细化工》2020年第1期

第 37 卷第 1 期 精 细 化 工 Vol.37, No.1
202 0 年 1 月 FINE CHEMICALS Jan. 2020

功能材料
BiVO /MIL-100(Fe)复合材料光催化降解结晶紫
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李梦佳 ，妥小军 ，李小妹 ，常 玥 1,2,3* ，查 飞 1,2
（1. 西北师范大学 化学化工学院，甘肃 兰州 730070；2. 生态环境相关高分子材料教育部重点实验室，
甘肃 兰州 730070；3. 甘肃省高分子材料重点实验室，甘肃 兰州 730070）

摘要：以 NH 4 VO 3 、Bi(NO 3 ) 3 ·5H 2 O、均苯三酸、Fe(NO 3 ) 3 ·9H 2 O 为主要原料，采用一锅水热法制备了
BiVO 4 /MIL-100(Fe)复合材料，用 XRD、SEM、N 2 吸附-脱附、UV-Vis DRS 及 PL 对复合材料的结构、形貌、比
表面积及光学性能进行了表征。XRD 显示具有较大比表面积的复合材料中 BiVO 4 为单斜相、四方相的混晶结构，
其对可见光的吸收强度高于 MIL-100(Fe)，吸收光后产生的光生电子、空穴的复合率较低。可见光条件下，不同
材料对结晶紫的光催化降解实验中，m(BiVO 4 )∶m[MIL-100(Fe)]=1∶3 配比的 BiVO 4 /3MIL-100(Fe)的光催化活
性最佳。实验结果表明：光照射 50 min，30 mg BiVO 4 /3MIL-100(Fe)对 30 mL 质量浓度 30 mg/L 结晶紫的降解
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率为 98.7%，主要光催化活性基团是 h 。此外，日光下该材料对结晶紫、罗丹明 B、亚甲基蓝也有较强的光降
解能力。
关键词：BiVO 4 /MIL-100(Fe)；复合材料；光催化活性；结晶紫；太阳光；功能材料
中图分类号：X703；O643.36 文献标识码：A 文章编号：1003-5214 (2020) 01-0033-06

Photocatalytic degradation of crystal violet using
BiVO 4/MIL-100(Fe) composites

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Li Mengjia , Tuo Xiaojun , Li Xiaomei , Chang Yue 1,2,3* , Zha Fei
（1. College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, Gansu, China;
2. Key Laboratory of Eco-Environment-Related Polymer Materials, Ministry of Education, Lanzhou 730070, Gansu, China;
3. Key Laboratory of Polymer Materials of Gansu Province, Lanzhou 730070, Gansu, China）
Abstract: BiVO 4/MIL-100(Fe) composites were prepared by one-pot hydrothermal method using NH 4VO 3,
Bi(NO 3) 3·5H 2O, 1,3,5-benzenetricarboxylic acid and Fe(NO 3) 3·9H 2O as raw materials. The structure,
morphology, specific area and optical property of BiVO 4/MIL-100(Fe) composites were characterized by
XRD, SEM, N 2 adsorption-desorption, UV-Vis DRS and PL. The composites had larger specific surface
area. XRD results showed that BiVO 4 had mixed crystal structure of monoclinic phase and tetragonal phase.
The absorption intensity of BiVO 4/MIL-100(Fe) composites for visible light was higher than that of
MIL-100(Fe). The recombination rate between photogenerated electrons and holes decreased when the
composites absorbed visible light. Different materials were used as catalysts for the photodegradation of
crystal violet under visible light. Among them, BiVO 4/3MIL-100(Fe) composites displayed the highest
photocatalytic activity. The results revealed that the degradation rate of 30 mg BiVO 4/3MIL-100(Fe)
composites for 30 mL crystal violet solution with an initial concentration of 30 mg/L was 98.7% under
visible light irradiation for 50 min. The holes were main active catalytic species. Besides, BiVO 4/
3MIL-100(Fe) composites exhibited stronger photocatalytic degradation ability for crystal violet,
rhodamine B and methylene blue under sunlight irradiation.
Key words: BiVO 4/MIL-100(Fe); composites; photocatalytic activity; crystal violet; sunlight; functional
materials

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近期关于光催化材料中对半导体材料钒酸铋 （BiVO 4 ）的研究较多 ，BiVO 4 主要具有四方锆石

收稿日期：2019-04-30; 定用日期：2019-07-11; DOI: 10.13550/j.jxhg.20190385
基金项目：国家自然科学基金（21865031）
作者简介：李梦佳（1993—），女，硕士生，E-mail：845189477@qq.com。联系人：常 玥（1970—），女，教授，E-mail：cy70@sina.com。