化学
降级(电信)
污染物
异质结
耐火材料(行星科学)
环境化学
化学工程
有机化学
冶金
光电子学
电信
物理
材料科学
计算机科学
工程类
作者
Jin Liu,Zhong Qian,Yanjin Wang,Ze-Zhi Zhang,Huiqin Zheng,Bin Yan,Yingying Shi
标识
DOI:10.1016/j.arabjc.2024.105844
摘要
Designing photocatalysts with p-n heterojunction structures is an effective way to boost the separation of photogenerated carriers and stimulate the photocatalytic degradation activity. Herein, an efficient visible-light responsive AgI/BiSI p-n heterojunction photocatalyst was successfully constructed. X-ray photoelectron spectroscopy (XPS), photoluminescence (PL) spectroscopy, and electrochemical measurements confirmed that the constructed AgI/BiSI p-n heterojunction structure was beneficial to the separation and transfer of photogenerated carriers, promoting the generation of main active species (•O2− and h+). Furthermore, the photocatalytic degradation rate constants of Acid Red 1 (0.4699 min−1) and metronidazole (0.0730 min−1) over the optimal AgI/BiSI were about 8.4 and 3.0 times higher than those over pure AgI, respectively. This work provides a heterojunction engineering strategy to design high-efficient photocatalysts for the degradation of refractory organic pollutants
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