2D/2D Z-scheme heterostructure of titanium-based metal–organic framework/ZnIn2S4 for photocatalytic solar fuel evolution

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Science Pub Date : 2025-09-06 DOI:10.1007/s10853-025-11426-z

Yeming Liu, Heng Rao, Ping She, Jun-Sheng Qin

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引用次数: 0

Abstract

Metal–organic frameworks (MOFs) show great potential in photocatalytic CO₂ reduction, but their performance is limited by poor light absorption and rapid electron–hole recombination. To address this, a 2D/2D Z-scheme heterostructure (Ti-BPC@ZIS, Ti-2,2′-Bipyridine-4,4′-dicarboxylic acid@ZnIn₂S₄) was constructed by integrating a titanium-based MOF (Ti-BPC) with ZnIn₂S₄ (ZIS) nanosheets. The heterojunction significantly enhanced visible-light absorption and charge separation, which is contributed Z-scheme structure and pyridine-N–Zn coordination at the interface. Under visible-light irradiation, Ti-BPC@ZIS achieved a CO yield of 3086 μmol/g in 4 h, which is 197.8 times higher than pristine Ti-BPC and 16.9 times higher than pure ZIS. These results highlight the effectiveness of 2D/2D Z-scheme design in improving MOF-based photocatalysts for solar fuel generation.

Graphical abstract

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用于光催化太阳能燃料演化的钛基金属-有机骨架/ZnIn2S4的2D/2D z型异质结构

金属有机骨架（MOFs）在光催化CO2还原方面表现出巨大的潜力，但其性能受到光吸收能力差和电子-空穴复合速度快的限制。为了解决这个问题，通过将钛基MOF （Ti-BPC）与ZnIn2S4 （ZIS）纳米片集成，构建了2D/2D Z-scheme异质结构（Ti-BPC@ZIS, ti -2,2 ' -联吡啶-4,4 ' -二羧酸acid@ZnIn2S4）。异质结显著增强了材料的可见光吸收和电荷分离，这与Z-scheme结构和界面上的吡啶- n - zn配位有关。在可见光照射下，Ti-BPC@ZIS在4 h内的CO产率达到3086 μmol/g，是原始Ti-BPC的197.8倍，是纯ZIS的16.9倍。这些结果突出了2D/2D z方案设计在改进mof基光催化剂用于太阳能燃料发电方面的有效性。图形抽象

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来源期刊

Journal of Materials Science 工程技术-材料科学：综合

CiteScore

7.90

自引率

4.40%

发文量

1297

审稿时长

2.4 months

期刊介绍： The Journal of Materials Science publishes reviews, full-length papers, and short Communications recording original research results on, or techniques for studying the relationship between structure, properties, and uses of materials. The subjects are seen from international and interdisciplinary perspectives covering areas including metals, ceramics, glasses, polymers, electrical materials, composite materials, fibers, nanostructured materials, nanocomposites, and biological and biomedical materials. The Journal of Materials Science is now firmly established as the leading source of primary communication for scientists investigating the structure and properties of all engineering materials.