Enhanced visible-light photocatalytic H2 evolution over three-dimensional spiny spherical ZnxCd1-xS

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

Materials Research Bulletin Pub Date : 2025-05-12 DOI:10.1016/j.materresbull.2025.113552

Jiangli Liu, Xiaowei Wang, Yushen Zhang, Hua Zhao, Lei Shi

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Abstract

Zn_xCd_1-xS has good solar visible region absorption and tunable band structure, is considered as a promising candidate for photocatalyst, yet the reports about three-dimensional Zn_xCd_1-xS were less. Herein, a novel three-dimensional spiny spherical Zn_xCd_1-xS were synthesized by a simple template-free hydrothermal process using cadmium chloride, zinc acetate, and thiourea as the precursors. Their hydrogen production properties were investigated. It was found that the highest photocatalytic H₂ production performance was achieved when the molar ratio of Zn and Cd was 6:4. Compared with CdS, its H₂ production rate was 1248.1 μmolg^-1h^-1, which increased by a factor of about 14 times. And it could show sustained hydrogen production capacity, and structural and morphological stability. And the quantum efficiency at 400 nm was 2.38 %. Obviously, due to its simple synthesis, inexpensive cost and controllable morphology, the prepared three-dimensional spiny spherical Zn_xCd_1-xS nanostructures have very promising applications in photocatalysis field.

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三维棘球ZnxCd1-xS上增强可见光光催化H2演化

ZnxCd1-xS具有良好的太阳可见光吸收和可调谐的能带结构，被认为是一种很有前途的光催化剂候选者，但关于三维ZnxCd1-xS的报道较少。本文以氯化镉、乙酸锌和硫脲为前驱体，采用简单的无模板水热法制备了一种新型的三维带状球形ZnxCd1-xS。研究了它们的产氢性能。结果表明，当Zn和Cd的摩尔比为6:4时，光催化制氢性能最高。与CdS相比，其产氢速率为1248.1 μmol -1h-1，提高了约14倍。它可以显示出持续的产氢能力，以及结构和形态的稳定性。在400 nm处量子效率为2.38%。显然，制备的三维带状球形ZnxCd1-xS纳米结构具有合成简单、成本低廉、形貌可控等优点，在光催化领域具有广阔的应用前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.