New Layered Chalcogenide‐Type Metal Sulfide Materials with Improved Properties for Solar Fuel Production Applications

IF 13 2区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Small Pub Date : 2024-12-17 DOI:10.1002/smll.202408727

Beatriz Silva‐Gaspar, Francisco Gonell, Raquel Martinez‐Franco, Antoine Fécant, Urbano Díaz, Avelino Corma

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引用次数: 0

Abstract

Novel lamellar chalcogenide materials, named as ITQ‐75, are synthesized, focusing on the advancement and alteration of metal (tin and zinc) sulfide‐based microstructured materials. These are achieved via hydro(solvo)thermal processes in the presence of N‐heterocyclic aromatic structural directing agents. The comprehensive characterization of these materials included fine‐tuning their electronic structure through a metal doping strategy and enhancing their accessibility by modifying the synthesis gel composition. This modification involved altering the gel's viscosity or incorporating mesoporogen agents such as saccharide moieties. The most promisingly modified ITQ‐75‐type materials demonstrated optical band gap values of ≈2.0 eV, falling within the optimal range for efficient solar fuel production processes. Furthermore, the photocatalytic performance of these optimized lamellar chalcogenides is assessed using the water‐splitting reaction for hydrogen generation in the gas phase and without any sacrificial reagent. These new noble metal‐free materials are revealed to be among the most efficient to date (up to 7 µmolH2 h cm−2). The results confirm the potential of these materials as promising photocatalysts for solar fuel production applications.

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性能更佳的新型层状卤化钙钛矿型金属硫化物材料在太阳能燃料生产中的应用

本研究合成了名为 ITQ-75 的新型片状卤化铝材料，重点研究金属（锡和锌）硫化物微结构材料的进步和改变。这些材料是在 N-杂环芳香族结构引导剂的存在下，通过水（溶）热工艺合成的。这些材料的综合表征包括通过金属掺杂策略对其电子结构进行微调，以及通过改变合成凝胶的成分来提高其可及性。这种改性包括改变凝胶的粘度或加入中间疏松剂（如糖分子）。最有前景的改性 ITQ-75 型材料的光带隙值≈2.0 eV，处于高效太阳能燃料生产工艺的最佳范围内。此外，在不使用任何牺牲试剂的情况下，利用分水反应在气相中生成氢气，对这些优化的片状铬化镓材料的光催化性能进行了评估。结果表明，这些新型无贵金属材料是迄今为止最高效的材料之一（高达 7 µmolH2 h cm-2）。研究结果证实，这些材料有望成为太阳能燃料生产应用的光催化剂。

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来源期刊

Small 工程技术-材料科学：综合

CiteScore

17.70

自引率

3.80%

发文量

1830

审稿时长

2.1 months

期刊介绍： Small serves as an exceptional platform for both experimental and theoretical studies in fundamental and applied interdisciplinary research at the nano- and microscale. The journal offers a compelling mix of peer-reviewed Research Articles, Reviews, Perspectives, and Comments. With a remarkable 2022 Journal Impact Factor of 13.3 (Journal Citation Reports from Clarivate Analytics, 2023), Small remains among the top multidisciplinary journals, covering a wide range of topics at the interface of materials science, chemistry, physics, engineering, medicine, and biology. Small's readership includes biochemists, biologists, biomedical scientists, chemists, engineers, information technologists, materials scientists, physicists, and theoreticians alike.