通过二维 MoS2 纳米片的表面调制增强 In2S3 光阳极的光电化学水分离能力

IF 4.4 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Nanomaterials Pub Date : 2024-10-11 DOI:10.3390/nano14201628

Roshani Awanthika Jayarathna, Jun-Ho Heo, Eui-Tae Kim

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引用次数: 0

摘要

光阳极具有充足的可见光吸收能力和高效的光生电荷载流子动力学特性，可加快实现高效光电化学分水（PEC-WS）。在此，我们通过铟溅射和硫化，在掺铟氧化锡玻璃基底上制备了 In2S3/MoS2 异质结纳米结构，然后进行了二维 MoS2 纳米片（NSs）的金属有机化学气相沉积。In2S3/MoS2 的光电流密度大大提高，高于原始 In2S3 和 MoS2 NSs 的光电流密度。这种改善是由于 MoS2 NSs 扩大了可见光吸收范围，而 II 型异质结增强了光生电子-空穴对的分离和转移。这项工作为开发太阳能驱动的 PEC-WS 的高效光阳极提供了一条前景广阔的途径。

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Enhanced Photoelectrochemical Water Splitting of In₂S₃ Photoanodes by Surface Modulation with 2D MoS₂ Nanosheets.

Photoanodes with ample visible-light absorption and efficient photogenerated charge carrier dynamics expedite the actualization of high-efficiency photoelectrochemical water splitting (PEC-WS). Herein, we fabricated the heterojunction nanostructures of In₂S₃/MoS₂ on indium-doped tin oxide glass substrates by indium sputtering and sulfurization, followed by the metal-organic chemical vapor deposition of 2D MoS₂ nanosheets (NSs). The photocurrent density of In₂S₃/MoS₂ was substantially enhanced and higher than those of pristine In₂S₃ and MoS₂ NSs. This improvement is due to the MoS₂ NSs extending the visible-light absorption range and the type-II heterojunction enhancing the separation and transfer of photogenerated electron-hole pairs. This work offers a promising avenue toward the development of an efficient photoanode for solar-driven PEC-WS.

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来源期刊

Nanomaterials NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

8.50

自引率

9.40%

发文量

3841

审稿时长

14.22 days

期刊介绍： Nanomaterials (ISSN 2076-4991) is an international and interdisciplinary scholarly open access journal. It publishes reviews, regular research papers, communications, and short notes that are relevant to any field of study that involves nanomaterials, with respect to their science and application. Thus, theoretical and experimental articles will be accepted, along with articles that deal with the synthesis and use of nanomaterials. Articles that synthesize information from multiple fields, and which place discoveries within a broader context, will be preferred. There is no restriction on the length of the papers. Our aim is to encourage scientists to publish their experimental and theoretical research in as much detail as possible. Full experimental or methodical details, or both, must be provided for research articles. Computed data or files regarding the full details of the experimental procedure, if unable to be published in a normal way, can be deposited as supplementary material. Nanomaterials is dedicated to a high scientific standard. All manuscripts undergo a rigorous reviewing process and decisions are based on the recommendations of independent reviewers.