化工新型材料

化工新型材料 ›› 2019, Vol. 47 ›› Issue (9) : 170-173.

科学研究

改性BiOBr复合光催化剂的制备及性能研究

^1,2

作者信息 +

Synthesis and performance of modified BiOBr composite photocatalyst

Ren Yulan^1,2, Song Hang^1,2, Sang Na^1,2, Yang Yingying^1,2, Liu Tongfu¹

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文章历史 +

Received
2018-04-12
Issue Date	Revised Date
2019-10-10	2018-04-12

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摘要

采用一步溶剂热法将半导体材料溴化氧铋(BiOBr)与钛酸铋(Bi₄Ti₃O₁₂)复合,制备了Bi₄Ti₃O₁₂/BiOBr复合光催化剂,利用X射线衍射仪、扫描电子显微镜等表征手段对其进行表征,并在7W LED灯照射下对罗丹明B(RhB)进行光催化反应。结果表明:合成的Bi₄Ti₃O₁₂/BiOBr复合光催化剂具有较好的结晶度和较高的光催化活性;反应时间与反应温度对光催化剂活性有显著影响,当反应时间为24h、反应温度为180℃时,复合光催化剂的降解率最大,可达85.1%;污染物RhB的初始质量浓度对降解率也有影响。

Abstract

A one-step solvothermal method was used to compound the BiOBr with Bi₄Ti₃O₁₂,which improved the photocatalytic activity of BiOBr.This product was analyzed by XRD and SEM,and the photocatalytic reaction of rhodamine B (RhB) was carried out under the light of 7W LED lamp.The results showed that the synthesized Bi₄Ti₃O₁₂/BiOBr had good crystallinity and high photocatalytic activity.At the same time,the synthesis time and temperature had a significant effect on the photocatalytic activity.When the time and temperature were 24h and 180℃,respectively,the degradation efficiency of RhB by the catalyst was the largest of 85.1%.The initial concentration of contaminants had an effect on the degradation efficiency.

关键词

一步溶剂热法 / 溴化氧铋 / 罗丹明B / 光催化

Key words

one-step solvothermal method / BiOBr / rhodamine B / photocatalysis

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