金修饰双铋基异质结的简单合成及其对高浓度RhB的光催化活性

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2025-09-08 DOI:10.1016/j.matlet.2025.139489

Nuo Xu , Wang-jia Xia , Xin-an Yang , Cheng-zhao Jin , Wang-bing Zhang

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引用次数: 0

摘要

针对目前大多数氧化铋基光氧化剂在高浓度工业废水条件下难以实现有效处理的现状，本研究采用单铋源前驱体热氧化-柠檬酸盐还原协同策略构建了具有多相界面的Au修饰双bi基异质结（β-Bi2O3/Bi2O2CO3/Au）。Bi2O2CO3的耦合提高了光生载流子的分离效率。Au的表面等离子体共振诱导了异质结可见光吸收的增加，其捕获电子的能力也促进了载流子的有效分离率。光催化降解速率为0.0030 min−1，表明异质结具有处理高浓度罗丹明B （0.3 g·L−1）的潜力。此外，异质结表现出良好的光氧化循环能力，三次循环仅降低3.49%。本研究将为解决高浓度有机染料废水的处理问题提供一个示范案例。

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Simple synthesis of Au modified dual-Bi based heterojunction and its photocatalytic activity for high concentration RhB

In view of the current situation where most bismuth oxide-based photooxidants struggle to achieve effective treatment under high-concentration industrial wastewater conditions, this study constructed a Au modified dual-Bi based heterojunction (β-Bi₂O₃/Bi₂O₂CO₃/Au) with a multiphase interface using a single bismuth source precursor thermal oxidation-citrate reduction synergistic strategy. The coupling of Bi₂O₂CO₃ enhances the separation efficiency of photo-generated carriers. The surface plasmon resonance of Au induces an increase in the visible light absorption of the heterojunction, and its ability to capture electrons also promotes the effective separation rate of carriers. The photocatalytic degradation rate of 0.0030 min⁻¹ indicates that the heterojunction has the potential to treat high-concentration Rhodamine B (0.3 g·L⁻¹). In addition, the heterojunction exhibits good photooxidation cycle ability, with only a 3.49 % decrease in three cycles. This research work will offer a demonstration case for addressing the issue of high-concentration organic dye wastewater treatment.

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来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive