Construction of ZCS/Cu3P/AgCl Composites for Enhanced Removal of Rhodamine B: Performance and Mechanism

IF 1.8 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Russian Journal of Inorganic Chemistry Pub Date : 2024-07-03 DOI:10.1134/s0036023624600308

Xiao-fang Li, Song-ze Wu, Jing Wang, Yue Ding, Xiao-qiang Feng

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引用次数: 0

Abstract

Based on the excellent adsorption, photosensitization and electron transfer properties of biochar, this paper constructed a composite material with the synergic effect of adsorption and photocatalysis to realize the integrated adsorption-enrichment and degradation of Rh B. Hence, a novel efficient ZCS/Cu₃P/AgCl adsorption-photocatalyst is synthesized and characterized by various testing methods. The efficient removal of dye Rh B is achieved through a synergistic effect between adsorption and photocatalytic degradation. Photocatalytic experiments showed that all the ZCS/Cu₃P/AgCl composites with different AgCl content exhibit superior photocatalytic activity for Rh B degradation, and when the content of AgCl is 31%, the photocatalytic activity is the best. After 30 min of dark adsorption, 30% of Rh B was removed by adsorption, and 98.76% of Rh B was removed after continuous visible light irradiation for 20 min. The kinetic constant of 31%-ZCS/Cu₃P/AgCl composite was 0.346 min^–1, which is about 24.7 and 3.8 times that Cu₃P (0.014 min^–1) and AgCl (0.091 min^–1), respectively. Moreover, photo-luminescence and photoelectrochemical experiment confirmed that the surface of ZCS/Cu₃P/AgCl is exposed to more active sites, the charge separation process is enhanced and the photogenerated electron–hole recombination efficiency is reduced compared with Cu₃P and AgCl. Finally, h⁺ and ·O\(_{2}^{ - }\) are identified the main active species in the photocatalytic reaction system, and a possible photocatalytic mechanism was put forward. ZCS/Cu₃P/AgCl composites have excellent photocatalytic performance and recyclability, and are expected to be an important material to solve dye pollutants in water.

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构建 ZCS/Cu3P/AgCl 复合材料以增强对罗丹明 B 的去除：性能与机理

摘要基于生物炭优异的吸附、光敏和电子传递特性，本文构建了一种具有吸附和光催化协同效应的复合材料，实现了对Rh B的吸附富集和降解一体化。通过吸附和光催化降解之间的协同效应，实现了对染料 Rh B 的高效去除。光催化实验表明，不同AgCl含量的ZCS/Cu3P/AgCl复合材料对Rh B的降解均表现出优异的光催化活性，当AgCl含量为31%时，光催化活性最好。暗吸附 30 分钟后，30% 的 Rh B 被吸附去除，连续可见光照射 20 分钟后，98.76% 的 Rh B 被去除。31%-ZCS/Cu3P/AgCl 复合材料的动力学常数为 0.346 min-1，分别是 Cu3P（0.014 min-1）和 AgCl（0.091 min-1）的 24.7 倍和 3.8 倍。此外，光致发光和光电化学实验证实，与 Cu3P 和 AgCl 相比，ZCS/Cu3P/AgCl 表面暴露了更多的活性位点，电荷分离过程增强，光生电子-空穴重组效率降低。最后，h+和-O\(_{2}^{ - }\) 被确定为光催化反应体系中的主要活性物种，并提出了一种可能的光催化机理。ZCS/Cu3P/AgCl复合材料具有优异的光催化性能和可回收性，有望成为解决水中染料污染物的重要材料。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Russian Journal of Inorganic Chemistry 化学-无机化学与核化学

CiteScore

3.10

自引率

38.10%

发文量

237

审稿时长

3 months

期刊介绍： Russian Journal of Inorganic Chemistry is a monthly periodical that covers the following topics of research: the synthesis and properties of inorganic compounds, coordination compounds, physicochemical analysis of inorganic systems, theoretical inorganic chemistry, physical methods of investigation, chemistry of solutions, inorganic materials, and nanomaterials.