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第 36 卷第 2 期 精 细 化 工 Vol.36, No.2
201 9 年 2 月 FINE CHEMICALS Feb. 2019

功能材料
高可见光活性 TiO -BiOI 的制备及其光催化性能
2

黄凤萍 1,2 ，崔梦丽 1,2 ，郭宇煜 1,2 ，辛 萌 1,2 ，
3
刘博学 1,2 ，周鑫敏 1,2 ，丁 力
(1. 陕西科技大学 化学与化工学院，陕西 西安 710021；2. 陕西省轻化工助剂重点实验室，陕西 西安
710021；3. 咸阳陶瓷研究设计有限公司，陕西 咸阳 712000)

摘要：以钛酸丁酯、亚氨基二乙醇、碘化钾和五水合硝酸铋为原料，通过溶剂热法将 TiO 2 均匀地负载到 BiOI
花状微球上，制备了 TiO 2 -BiOI 复合光催化剂。通过 XRD、XPS、SEM、TEM 和 UV-Vis-DRS 对样品进行了表
征。以甲基橙为目标降解物，测定了 TiO 2 -BiOI 复合光催化剂在可见光下的光催化性能。结果表明，纳米 TiO 2
的加入为复合光催化剂比表面积的增加作出了贡献，TiO 2 与 BiOI 之间形成的异质结结构可以促进光生电子和空
穴分离，从而达到提高复合光催化剂光催化性能的目的。n(Ti)∶n(Bi)=0.4∶1.0 的 TiO 2 -BiOI 复合光催化剂表现
出最佳的光催化降解性能，可见光（λ>420 nm）照射 60 min，其对甲基橙的降解率达到 95%，远高于纯的 TiO 2
和 BiOI 光催化剂。
关键词：溶剂热法；二氧化钛；碘氧化铋；可见光；功能材料
中图分类号：O643.32 文献标识码：A 文章编号：1003-5214 (2019) 02-0231-06

Preparation and Photocatalytic Performance of TiO 2-BiOI

Photocatalyst with High Visible-light Activity

1,2
1,2
1,2
1,2
HUANG Feng-ping , CUI Meng-li , GUO Yu-yu , XIN Meng ,
3
1,2
1,2
LIU Bo-xue , ZHOU Xin-min , Ding Li
（1. College of Chemistry and Chemical Engineering, Shaanxi University of Science & Technology, Xi'an 710021, Shaanxi,
China; 2. Shaanxi Key Laboratory of Chemical Additives for Industry, Xi'an 710021, Shaanxi, China; 3. Xianyang
Research & Design Institute of Ceramics, Xianyang 712000, Shaanxi, China）
Abstract: TiO 2-BiOI photocatalysts were prepared by solvothermal methodusingbutyl titanate,
diethanolimine, potassium iodide and bismuth nitrate pentahydrate as raw materials, in which TiO 2
nanoparticles were loaded on BiOI flower microspheres. The obtained samples were characterized by XRD,
XPS, SEM, TEM and UV-Vis-DRS spectrophotometer. The photocatalytic activity of TiO 2/BiOI composite
for the degradation of methyl orange (MO) was studied under visible light. The results showed that the
addition of nano TiO 2 contributed to the increase of specific surface area of composite. The heterogeneous
structure formed between TiO 2 and BiOI could promote the separation of photogenerated electrons and
holes, which improved the photocatalytic performance of composite photocatalyst. It was found that when
the molar ratio of Ti:Bi was 0.4∶1.0, the sample had the highest photocatalytic activity for the degradation
of MO under visible light (λ>420 nm) irradiation for 60 min, and thedegradation rate was 95%. The
as-prepared TiO 2-BiOI composite exhibited higher performance than the pure TiO 2 and BiOI towards
photocatalytic degradation of MO.
Key words: solvothermal method; titanium dioxide; bismuth oxyiodide; visible light; functional materials
Foundation item: “13th Five-Year” of National Key Research and Development Plan of China
(2016YFC0700904)

收稿日期：2018-03-02; 定用日期：2018-10-15; DOI: 10.13550/j.jxhg.20180137
基金项目：“十三五”国家重点研发计划（2016YFC0700904）
作者简介：黄凤萍（1967—），女，博士，副教授，E-mail：huangfp168@163.com。