光降解
罗丹明B
辐照
降级(电信)
可见光谱
溴
材料科学
化学工程
光化学
光电子学
化学
纳米技术
光催化
计算机科学
催化作用
有机化学
物理
电信
核物理学
工程类
冶金
作者
Jinjiang Zhao,Tianyu Guo,Hongtao Wang,Meifang Yan,Yu Qi
标识
DOI:10.1016/j.jallcom.2023.169613
摘要
Direct discharge of massive textile dyes into natural water urges us to exploit an efficient technique and further alleviate the pollution level. Herein, a series of BiOBr nanoflakes with different thicknesses were successfully fabricated by a simple adjustment of bromine sources, and the photodegradation of rhodamine B (RhB) was further explored under visible light irradiation. The results indicated that the BiOBr photocatalyst synthesized with CTAB as the bromine source (BOB-CTAB) delivered the top-flight photocatalytic performance, and the degradation efficiency of RhB achieved 98.7% within 20 min. The improved photoactivity was attributed to the ultrathin nanoflakes structure, reduced band gap, enhanced transfer rate of light-induced electron-hole pairs. The cycling experiment suggested that the exceptional BOB-CTAB photocatalyst can still remove more than 88% of RhB after 5 cycles. In addition, the boosted photodegradation mechanism was systematically elaborated. This work provides a new strategy to accelerate the photodegradation efficiency for water purification by engineering the thickness of BiOBr nanoflakes.
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