双功能金属纳米颗粒界面催化反应的原位表面增强拉曼光谱研究

IF 1.7 4区 化学 Q3 CHEMISTRY, MULTIDISCIPLINARY Russian Chemical Bulletin Pub Date : 2024-10-26 DOI:10.1007/s11172-024-4374-8
Ju Chong, Jianrui Cao, Sulian Wang, Mingju Huang
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引用次数: 0

摘要

以显示表面等离子体共振(SPR)效应和光催化活性的催化体系 Au@CdS 为例,研究了金属-半导体双功能核壳纳米材料。讨论了所研究纳米材料光催化活性的一些机制。利用表面增强拉曼光谱(SERS)原位监测了 SPR 驱动的 4-硝基苯硫酚(pNTP)到 4,4′-二巯基偶氮苯(DMAB)的光催化二聚反应。通过监测探针分子的拉曼光谱变化,跟踪了 Au@CdS 中 "热 "电子的转移路径。纳米材料 Au@CdS 在光催化降解罗丹明 6G 方面表现出很高的催化活性。该 SPR 显示金属半导体纳米复合材料是一种极具前景的光催化和原位 SERS 探针。
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In situ surface-enhanced Raman spectroscopy study of interfacial catalytic reaction of bifunctional metal nanoparticles

Metal-semiconductor bifunctional core-shell nanomaterials were studied using catalytic system Au@CdS as example that displayed surface plasmon resonance (SPR) effects and photocatalytic activity. Some mechanisms of photocatalytic activity of the studied nanomaterials were discussed. Surface-enhanced Raman spectroscopy (SERS) was used to monitor in situ the SPR-driven photocatalytic dimerization of 4-nitrothiophenol (pNTP) to 4,4′-dimercaptoazobenzene (DMAB). The transfer path of “hot” electrons in Au@CdS was tracked by monitoring Raman spectral changes of the probe molecule. Nanomaterials Au@CdS showed high catalytic activity in photocatalytic degradation of rhodamine 6G. The SPR-displaying metal-semiconductor nanocomposite was indicated to be an extremely promising photocatalytic and in-situ SERS probe.

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来源期刊
Russian Chemical Bulletin
Russian Chemical Bulletin 化学-化学综合
CiteScore
2.70
自引率
47.10%
发文量
257
审稿时长
3-8 weeks
期刊介绍: Publishing nearly 500 original articles a year, by leading Scientists from Russia and throughout the world, Russian Chemical Bulletin is a prominent international journal. The coverage of the journal spans practically all areas of fundamental chemical research and is presented in five sections: General and Inorganic Chemistry; Physical Chemistry; Organic Chemistry; Organometallic Chemistry; Chemistry of Natural Compounds and Bioorganic Chemistry.
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