组装 S-Scheme 异质结 In2S3/Zr-bcu-22bipy44dc：优化光电特性，实现六价铬离子和染料的高效光化学净化

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials Letters Pub Date : 2024-11-07 DOI:10.1016/j.matlet.2024.137687

Ying-Ying Qiao , Yang-Yang Si , Jie Liu , Zhi-Qiang Wu , Cang Liu , Qing Li , Long Yuan

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引用次数: 0

摘要

Zr-bcu-22bipy44dc 的 LUMO 位置更接近 In2S3 的 VB，被用来组装 S 型异质结 IS-Zr-MOF。由于适当的带状结构错位，光电子特性得到了显著优化。在 500 W 的氙灯照射下，IS-Zr-MOF-2 对 Cr2O72- 的光催化还原效率在 30 分钟内就达到了 98.6%。在 500 W 汞灯下，IS-Zr-MOF-2 还能有效降解活性染料 RB13、RB21 和 RR15。这项研究提出了一种实用的方法，可用于制造新型双功能光催化剂来修复水环境。

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Assembly of S-Scheme heterojunction In2S3/Zr-bcu-22bipy44dc: Optimize the optical-electronic properties for highly efficient photochemical decontamination of Cr(VI) ions and dyes

Zr-bcu-22bipy44dc, which features a LUMO positioned closer to the VB of In₂S₃, was utilized to assemble a S-Scheme heterojunction IS-Zr-MOF. Due to the appropriate band structure dislocation, the optical-electronic properties have been notably optimized. The photocatalytic reduction efficiency of IS-Zr-MOF-2 for Cr₂O₇^2- has achieved 98.6 % just within 30 min, under 500 W xenon lamp. It also displays effective degradation ability towards reactive dyes RB13, RB21 and RR15, under 500 W mercury lamp. This study presents a practical approach to create novel bi-functional photocatalysts for remediation of water environment.

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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