Synthesis of molybdenum disulfide/covalent organic frameworks composite for efficient solar-driven hydrogen production and pollutant degradation

IF 5.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Bulletin Pub Date : 2024-11-09 DOI:10.1016/j.materresbull.2024.113187

Guanglei Tan , Zhengri Shao , Dan Tang

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引用次数: 0

Abstract

Covalent organic frameworks (COFs) are recently recognized photocatalysts with outstanding performance in photocatalysis. Typically, COFs exhibit significant hydrogen evolution activity in the presence of noble metal co-catalysts. Nevertheless, due to their insufficient availability and high cost, it is essential to replace noble metal co-catalysts with cost-effective and abundant alternatives. Herein, we have substituted noble metal co-catalyst with MoS₂ and designed MoS₂ linked hydrazone-based COF composite for exceptional photocatalysis. Various characterization techniques provide evidence that the MoS₂/COF composite has been successfully synthesized. The as-synthesized MoS₂/COF photocatalyst exhibited a hydrogen production rate of 115 µmol·g^‒1h^‒1 and achieved 98 % degradation of Rhodamine B (RhB) dye under visible light irradiation for 2 h The photoluminescence (PL) spectra show that the correlation between MoS₂ and COF improves charge carrier's separation rate and minimizes recombination, thereby enhancing photocatalytic activity. This study aims to broaden the application of hydrazone-based COFs composites in energy production and environmental remediation.

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合成二硫化钼/共价有机框架复合材料，用于太阳能驱动的高效制氢和污染物降解

共价有机框架（COFs）是近来公认的光催化剂，在光催化方面具有出色的性能。通常情况下，COFs 在贵金属助催化剂的作用下具有显著的氢进化活性。然而，由于贵金属助催化剂供应不足且价格昂贵，因此有必要用具有成本效益且资源丰富的替代品来取代贵金属助催化剂。在此，我们用 MoS2 替代了贵金属助催化剂，并设计出了 MoS2 链接腙基 COF 复合材料，以实现优异的光催化性能。各种表征技术证明 MoS2/COF 复合材料已成功合成。光致发光（PL）光谱显示，MoS2 和 COF 之间的相关性提高了电荷载流子的分离率，减少了重组，从而提高了光催化活性。这项研究旨在拓宽基于腙的 COFs 复合材料在能源生产和环境修复方面的应用。

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来源期刊

Materials Research Bulletin 工程技术-材料科学：综合

CiteScore

9.80

自引率

5.60%

发文量

372

审稿时长

42 days

期刊介绍： Materials Research Bulletin is an international journal reporting high-impact research on processing-structure-property relationships in functional materials and nanomaterials with interesting electronic, magnetic, optical, thermal, mechanical or catalytic properties. Papers purely on thermodynamics or theoretical calculations (e.g., density functional theory) do not fall within the scope of the journal unless they also demonstrate a clear link to physical properties. Topics covered include functional materials (e.g., dielectrics, pyroelectrics, piezoelectrics, ferroelectrics, relaxors, thermoelectrics, etc.); electrochemistry and solid-state ionics (e.g., photovoltaics, batteries, sensors, and fuel cells); nanomaterials, graphene, and nanocomposites; luminescence and photocatalysis; crystal-structure and defect-structure analysis; novel electronics; non-crystalline solids; flexible electronics; protein-material interactions; and polymeric ion-exchange membranes.