光催化
异质结
罗丹明B
材料科学
纳米棒
降级(电信)
载流子
光电流
化学工程
氧化还原
纳米技术
电子转移
光化学
光电子学
化学
催化作用
计算机科学
冶金
工程类
电信
生物化学
作者
Xinyi Lian,Zongyi Huang,Yuqi Zhang,Zhou Chen,Peter Meidl,Xiaodong Yi,Baile Xu
出处
期刊:Chemosphere
[Elsevier]
日期:2022-11-26
卷期号:313: 137351-137351
被引量:23
标识
DOI:10.1016/j.chemosphere.2022.137351
摘要
Photocatalysis has been vastly employed as a feasible and efficient strategy for the removal of environmental pollutants. In this study, a well-designed core-shell heterojunction of WO3 decorated with ZnIn2S4 nanosheets were fabricated under mild in-situ conditions, and fabricated processes were systematically investigated with different fabrication durations. The coupling of WO3 and ZnIn2S4 (ZIS) resulted in a Z-scheme mechanism for charge carrier transfer, holding the respective redox capacity. The as-prepared 1D/2D WO3@ZIS heterostructure displayed the highest removal efficiency within 30 min for 25 mg L-1 Cr(VI), 89.3 and 29.7 times higher than pure WO3 and ZnIn2S4. 1D/2D WO3@ZIS remained excellently stable after 5 cycling experiments. Moreover, 40 mg L-1 RhB could be degraded within 50 min. The broad and short photogenerated electron transportation path is guaranteed by the 1D/2D and Z-scheme charge separation mechanism. It efficiently prevented photo-generated charge carriers from recombination, resulting in a longer carrier lifespan and better photocurrent responses than that of pure ones. This photocatalytic system showed promising results and also provides a framework for an efficient system for photocatalysis with potential for environmental application.
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