Zn0.5Cd0.5S/NaBiS2 S-Scheme异质结光催化选择性厌氧氧化5-羟甲基糠醛

IF 3.9 3区 化学 Q2 CHEMISTRY, PHYSICAL
ChemCatChem Pub Date : 2025-07-24 DOI:10.1002/cctc.202500804
Shuanglong Li, Donghui Wang, Jiaxu Chen, Haiyang Zhang, Feng Chen
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引用次数: 0

摘要

生物质衍生的5-羟甲基糠醛(HMF)光催化转化为高附加值化学品2,5-二甲酰呋喃(DFF),并伴有同步制氢,为同时获得绿色能源和精细化学品提供了一种高效和可持续的策略。本研究通过一步法碱水热法制备了一系列具有s型异质结的Zn0.5Cd0.5S/NaBiS2 (ZCS/NBS)复合材料,实现了HMF的高效光催化厌氧氧化,在共产H2的同时选择性生产DFF。HRTEM观察证实了ZCS和NBS之间形成了紧密结合的异质结。在ZCS/NBS异质结处形成的界面电场显著提高了光生载流子的迁移和分离效率。在可见光照射下,ZCS/NBS-7复合材料表现出优异的光催化性能,HMF转化率为67.81%,DFF选择性为95.69%。HMF转化率是原始ZCS(12.46%)的5.4倍,H2产率达到81.11µmol/g/h,是原始ZCS(5.63µmol/g/h)的14.4倍。本研究突出了双晶ZCS在HMF光催化选择性厌氧氧化中的重要应用潜力,并为设计适合光催化有机转化的异质结材料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。

Photocatalytic Selective Anaerobic Oxidation of 5-Hydroxymethylfurfural via Zn0.5Cd0.5S/NaBiS2 S-Scheme Heterojunction

Photocatalytic Selective Anaerobic Oxidation of 5-Hydroxymethylfurfural via Zn0.5Cd0.5S/NaBiS2 S-Scheme Heterojunction

Photocatalytic Selective Anaerobic Oxidation of 5-Hydroxymethylfurfural via Zn0.5Cd0.5S/NaBiS2 S-Scheme Heterojunction

Photocatalytic Selective Anaerobic Oxidation of 5-Hydroxymethylfurfural via Zn0.5Cd0.5S/NaBiS2 S-Scheme Heterojunction

Photocatalytic conversion of biomass-derived 5-hydroxymethylfurfural (HMF) to the high-value-added chemical 2,5-diformylfuran (DFF) coupled with concurrent hydrogen production offers an efficient and sustainable strategy for simultaneously obtaining green energy and fine chemicals. In this study, a series of Zn0.5Cd0.5S/NaBiS2 (ZCS/NBS) composites featuring S-type heterojunctions were successfully prepared via a one-step alkaline hydrothermal method, achieving efficient photocatalytic anaerobic oxidation of HMF to selectively produce DFF while co-producing H2. HRTEM observation confirms the formation of a tightly integrated heterojunction between the ZCS and NBS. An interfacial electric field formed at the heterojunction of ZCS/NBS significantly enhances the migration and separation efficiency of photogenerated carriers. Under visible-light irradiation, the ZCS/NBS-7 composite exhibits superior photocatalytic performance, achieving an HMF conversion of 67.81% with a DFF selectivity of 95.69%. This HMF conversion is 5.4 times higher than that of pristine ZCS (12.46%), while the H2 production rate reaches 81.11 µmol/g/h, which is 14.4 times greater than that of pristine ZCS (5.63 µmol/g/h). This study highlights the significant application potential of twinned ZCS in the photocatalytic selective anaerobic oxidation of HMF and offers valuable insights into the design of suitable heterojunction materials for photocatalytic organic conversion.

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来源期刊
ChemCatChem
ChemCatChem 化学-物理化学
CiteScore
8.10
自引率
4.40%
发文量
511
审稿时长
1.3 months
期刊介绍: With an impact factor of 4.495 (2018), ChemCatChem is one of the premier journals in the field of catalysis. The journal provides primary research papers and critical secondary information on heterogeneous, homogeneous and bio- and nanocatalysis. The journal is well placed to strengthen cross-communication within between these communities. Its authors and readers come from academia, the chemical industry, and government laboratories across the world. It is published on behalf of Chemistry Europe, an association of 16 European chemical societies, and is supported by the German Catalysis Society.
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