双Z-scheme LaVO4/WO3@HxV2O5异质结的多通道电荷转移在环己烷可见光-热协同氧化中的应用

IF 4.8 2区 化学 Q2 CHEMISTRY, PHYSICAL
Kuan Wang , Tong-Le Dang , Sheng-Li Lv , Xin-Peng Li , Kai-Xiong Dai , Zhen-Hong He , Weitao Wang , Huan Wang , Zhao-Tie Liu
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引用次数: 0

摘要

光热协同催化环己烷氧化是制备环己酮和环己醇(KA油)的一种高效、环保的方法。然而,该策略遇到了一些挑战,阻碍了其一步法生产己二酸(AA)的实施,这突出了进一步发展的必要性。在此,通过构建双z型异质结,开发了一种强大的策略来定制LaVO4/WO3@HxV2O5纳米球形复合材料中的多通道电荷转移途径。LaVO4/WO3@HxV2O5对环己烷氧化表现出优异的光热催化性能,环己烷转化率为11.01 %,总选择性为96.38 %(固体产物AA为58.51 %,液体产物KA油为37.87 %)。LaVO4/WO3@HxV2O5的优异性能可归因于具有多通道电荷转移和高氧化还原电位的双Z-scheme异质结,这有助于光生电子-空穴对的有效分离和转移。这种精心设计的双z型异质结为光热催化应用领域的多通道电荷转移高效途径的细致构建提供了有价值的见解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Multi-channel charge transfer of double Z-scheme LaVO4/WO3@HxV2O5 heterojunction for efficient visible-light photo-thermo synergy oxidation of cyclohexane
The photo-thermo synergy catalytic cyclohexane oxidation has been identified as an efficient and environmentally friendly approach for the preparation of cyclohexanone and cyclohexanol (KA oil). However, this strategy encountered several challenges that impeded its implementation for the one-step production of adipic acid (AA), highlighting the need for further advancements. Herein, a robust strategy for tailoring multi-channel charge transfer pathways in LaVO4/WO3@HxV2O5 nanospherical composites was developed by constructing double Z-scheme heterojunctions. The LaVO4/WO3@HxV2O5 exhibited exceptional photothermal catalytic performance for the cyclohexane oxidation, achieving the cyclohexane conversion of 11.01 % with the total selectivity of 96.38 % (solid product AA of 58.51 % and liquid product KA oil of 37.87 %). The exceptional performance of LaVO4/WO3@HxV2O5 can be ascribed to the double Z-scheme heterojunctions with multi-channel charge transfer and high redox potentials, which facilitates the efficient separation and transfer of photo-generated electron-hole pairs. This deliberate design of double Z-scheme heterojunctions provides valuable insights into the meticulous construction of efficient pathways with multi-channel charge transfer for the field of photothermal catalysis applications.
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来源期刊
Applied Catalysis A: General
Applied Catalysis A: General 化学-环境科学
CiteScore
9.00
自引率
5.50%
发文量
415
审稿时长
24 days
期刊介绍: Applied Catalysis A: General publishes original papers on all aspects of catalysis of basic and practical interest to chemical scientists in both industrial and academic fields, with an emphasis onnew understanding of catalysts and catalytic reactions, new catalytic materials, new techniques, and new processes, especially those that have potential practical implications. Papers that report results of a thorough study or optimization of systems or processes that are well understood, widely studied, or minor variations of known ones are discouraged. Authors should include statements in a separate section "Justification for Publication" of how the manuscript fits the scope of the journal in the cover letter to the editors. Submissions without such justification will be rejected without review.
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