Tuning electronic interaction between silver quantum dots and Y-MOF to boost photocatalytic acetaldehyde pollutant purification

IF 9.6 1区化学 Q1 CHEMISTRY, APPLIED

Journal of Rare Earths Pub Date : 2026-10-01 Epub Date: 2025-12-16 DOI:10.1016/j.jre.2025.12.016

Hui Yang, Feng Tang, Dong Xu, Wenxuan Qian, Yunfei Ma, Jinping Lei, Xilong Yue, Teruhisa Ohno, Qitao Zhang, Bin Xu

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引用次数: 0

Abstract

Developing efficient photocatalysts for purifying volatile organic compounds (VOCs) is faced with a significant challenge in environmental remediation fields. Herein, a novel photocatalyst named Ag-YT was successfully synthesized by anchoring silver quantum dots (Ag QDs) into an yttrium-based organic framework (Y-TBAPy) using a one-pot method. The Ag-YT photocatalyst demonstrates remarkable performance in degrading acetaldehyde, with an apparent quantum efficiency (AQE) value of 10.5% at 420 nm, which is 20.7- and 3.5-times higher than that of pristine H₄TBAPy and commercial P25, respectively. Comprehensive characterizations confirm that the synergistic interaction between Ag QDs and yttrium-based metal–organic framework (Y-MOF) can facilitate charge separation and improve light absorption and utilization, thereby boosting the overall photocatalytic efficiency of CH₃CHO removal significantly. Mechanistic investigations reveal that Ag QDs can serve as electron reservoirs, then the recombination of carriers is suppressed and the generation of reactive oxygen species (ROS) is promoted equally. More importantly, the Ag-YT photocatalyst exhibits excellent stability and reusability over multiple activity test cycles. This work not only provides a rational design strategy for modulating metal-supported interactions with MOF-based photocatalysts, but also offers a promising solution for efficiently reducing VOCs abatement in the practical applications.

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调整银量子点与Y-MOF之间的电子相互作用以促进光催化乙醛污染物的净化

开发高效的光催化剂净化挥发性有机物（VOCs）是环境修复领域面临的重大挑战。本文采用一锅法将银量子点（Ag QDs）锚定在镱基有机骨架（y - ttaby）上，成功合成了一种新型光催化剂Ag- yt。Ag-YT光催化剂在420 nm处的表观量子效率（AQE）值为10.5%，分别是原始h4tapy和商用P25的20.7倍和3.5倍。综合表征证实，Ag量子点与yttriumbased metal-organic framework （Y-MOF）之间的协同作用可以促进电荷分离，提高光吸收和利用，从而显著提高CH3CHO去除的整体光催化效率。机理研究表明，Ag量子点可以作为电子储层，抑制载流子的重组，促进活性氧（ROS）的生成。更重要的是，Ag-YT光催化剂在多次活性测试循环中表现出优异的稳定性和可重用性。这项工作不仅为调节金属支持的与mof基光催化剂的相互作用提供了一种合理的设计策略，而且为在实际应用中有效减少VOCs的减排提供了一种有前途的解决方案。

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

Journal of Rare Earths 化学-应用化学

CiteScore

8.70

自引率

14.30%

发文量

374

审稿时长

1.7 months

期刊介绍： The Journal of Rare Earths reports studies on the 17 rare earth elements. It is a unique English-language learned journal that publishes works on various aspects of basic theory and applied science in the field of rare earths (RE). The journal accepts original high-quality original research papers and review articles with inventive content, and complete experimental data. It represents high academic standards and new progress in the RE field. Due to the advantage of abundant RE resources of China, the research on RE develops very actively, and papers on the latest progress in this field emerge every year. It is not only an important resource in which technicians publish and obtain their latest research results on RE, but also an important way of reflecting the updated progress in RE research field. The Journal of Rare Earths covers all research and application of RE rare earths including spectroscopy, luminescence and phosphors, rare earth catalysis, magnetism and magnetic materials, advanced rare earth materials, RE chemistry & hydrometallurgy, RE metallography & pyrometallurgy, RE new materials, RE solid state physics & solid state chemistry, rare earth applications, RE analysis & test, RE geology & ore dressing, etc.