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Three-Dimensional Multihierarchical Hexagonal/Cubic ZnIn2S4 S-Scheme Heterophase Junction for Superior Photocatalysis
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2024-01-11 , DOI: 10.1021/acs.inorgchem.3c04102
Xiaoxue Ke 1 , Changcun Tang 1 , Renzhi Xiong 1 , Yanhe Xiao 1 , Baochang Cheng 1 , Shuijin Lei 1
Affiliation  

It is an important strategy to design composite materials with a special microstructure and a tunable electronic structure through structural compatibility. In this work, a novel hexagonal/cubic ZnIn2S4 polymorphic heterophase junction with a three-dimensional multihierarchical structure is successfully constructed by in situ growth of hexagonal ZnIn2S4 nanosheets on the surface of cubic ZnIn2S4 flower-like microspheres prepared by topological chemical synthesis. On the one hand, the multihierarchical architecture provides large specific surface area, abundant active sites, and excellent light trapping capability. On the other hand, the construction of a direct S-scheme heterophase junction enables the formation of a special charge-transfer channel under the force of a built-in electric field, which not only improves the separation efficiency of carriers but also ensures the stronger reaction activity of charges. The prepared ZnIn2S4 heterophase junction composite photocatalyst exhibits greatly boosted photocatalytic efficiency in rhodamine B degradation, hexavalent chromium reduction, and water splitting for hydrogen production, which are 12.3, 6.5, and 3.1 times higher than that of pure hexagonal ZnIn2S4 and 8.1, 5.1, and 2.3 times higher than that of pure cubic ZnIn2S4, respectively, demonstrating its significant potential for applications in energy and environmental fields.

中文翻译:


三维多层次六方/立方 ZnIn2S4 S 型异相结具有卓越的光催化作用



通过结构相容性设计具有特殊微观结构和可调谐电子结构的复合材料是一种重要策略。本工作通过在立方ZnIn 2 S 4花状微球表面原位生长六方ZnIn 2 S 4纳米片,成功构建了具有三维多级结构的新型六方/立方ZnIn 2 S 4多态异相结采用拓扑化学合成方法制备。一方面,多层结构提供了大的比表面积、丰富的活性位点和优异的光捕获能力。另一方面,直接S型异相结的构建使得在内建电场的作用下能够形成特殊的电荷转移通道,不仅提高了载流子的分离效率,而且保证了更强的载流子传输能力。电荷的反应活性。所制备的ZnIn 2 S 4异相结复合光催化剂在罗丹明B降解、六价铬还原和水分解制氢方面表现出极大的光催化效率,分别比纯六方ZnIn 2 S 4高12.3、6.5和3.1倍分别是纯立方ZnIn 2 S 4的8.1、5.1和2.3倍,展示了其在能源和环境领域的巨大应用潜力。
更新日期:2024-01-11
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