1. 华润电力焦作有限公司
2. 河南理工大学机械与动力工程学院
纸质出版:2024
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张景繁, 栗敏, 张倩倩, 等. 化学刻蚀法制备BiOBr/Bi2O2CO3异质结及其高效脱除Hg0性能[J]. 能源研究与管理, 2024,16(4):98-108.
张景繁, 栗敏, 张倩倩, et al. 化学刻蚀法制备BiOBr/Bi2O2CO3异质结及其高效脱除Hg0性能[J]. 2024, 16(4): 98-108.
张景繁, 栗敏, 张倩倩, 等. 化学刻蚀法制备BiOBr/Bi2O2CO3异质结及其高效脱除Hg0性能[J]. 能源研究与管理, 2024,16(4):98-108. DOI: 10.16056/j.2096-7705.2024.04.013.
张景繁, 栗敏, 张倩倩, et al. 化学刻蚀法制备BiOBr/Bi2O2CO3异质结及其高效脱除Hg0性能[J]. 2024, 16(4): 98-108. DOI: 10.16056/j.2096-7705.2024.04.013.
为增强BiOBr对可见光的利用率和提高其光催化活性,采用简单的化学刻蚀法制备出p-n型BiOBr/Bi
2
O
2
CO
3
异质结光催化剂,并研究其在荧光灯下脱除单质汞(Hg
0
)的性能;采用多种表征技术对光催化剂的物理化学结构属性进行分析,阐明复合物表面或界面处电荷分离和转移的过程。结果表明:所制备Bi
2
O
2
CO
3
-3光催化剂的脱汞效率效果高达95%;SO
2
对Bi
2
O
2
CO
3
-3光催化剂脱汞性能抑制明显,但停止通入SO
2
后,脱汞性能可以恢复;荧光灯辐照对脱汞效率至关重要;强碱性环境下,过量的OH
-
与光照产生的空穴(h
+
)反应,会略微影响BiOBr/Bi
2
O
2
CO
3
的汞脱除性能。研究发现BiOBr和Bi
2
O
2
CO
3
异质结的形成会降低光生电子和空穴的复合,增强光催化能力。机制分析表明,在光催化脱汞过程中,·O
2
-
和h
+
为主要活性物种,·OH未参与反应。
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