Rational Design of Novel Tantalum Based (CuTaS3/AgTaS3) Heterostructures for Photocatalytic and Electrocatalytic Hydrogen Production

IF 2.7 4区 化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Journal of Cluster Science Pub Date : 2024-12-25 DOI:10.1007/s10876-024-02744-4
V. Velarasan, P. Puviarasu, P. Sujita, Sethumathavan Vaauthorel
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Abstract

The present investigation successfully synthesized a novel tantalum-based CuTaS3/AgTaS3 heterostructure using D-penicillamine as a sulfur source and investigated its hydrogen evolution capability using both photocatalytic and electrocatalytic methods. The structural and morphological features were examined using XRD, Raman, FT-IR, TEM and SEM with EDS analysis, respectively. The UV-DRS results ascertain the visible-light response and bandgap of the synthesized materials. Combining AgTaS3 with CuTaS3 reduced the recombination rate, as revealed by the photocurrent measurements of the materials. The photocatalytic hydrogen production for the as-synthesized materials was investigated by consuming Na2S + Na2SO3 as a sacrificial reagent. The CuTaS3 with 5% of the best AgTaS3 loading gives off the most H2 evolution rate, 1430 µmol/g, after 5 h of being exposed to visible light. Furthermore, the electrocatalytic measurements were performed to assess the CuTaS3/AgTaS3 heterostructure for water-splitting hydrogen evolution reactions (HER). The results displayed that the enhanced HER reactivity with lower overpotentials and Tafel slope when heterostructure was formed. The higher double-layer capacitance (Cdl) value shows how many more active sites were formed after AgTaS3 was combined with CuTaS3. These results confirmed that the CuTaS3/AgTaS3 heterostructure generated H2 effectively in both electrocatalytic and photocatalytic processes. The present work may bring innovative perceptions for the advancement of tantalum-based sulfide materials for green hydrogen production.

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新型钽基(CuTaS3/AgTaS3)异质结构光催化和电催化制氢的合理设计
本研究以d -青霉胺为硫源成功合成了一种新型钽基CuTaS3/AgTaS3异质结构,并采用光催化和电催化两种方法研究了其析氢能力。采用XRD、Raman、FT-IR、TEM、SEM和EDS分析对其结构和形态特征进行了表征。UV-DRS结果确定了合成材料的可见光响应和带隙。材料的光电流测量结果表明,将AgTaS3与CuTaS3结合可以降低复合速率。以Na2S + Na2SO3为牺牲剂,对合成材料的光催化制氢进行了研究。AgTaS3最佳负载量为5%的CuTaS3在可见光下作用5 h后放出的H2析出率最高,为1430µmol/g。此外,电催化测定了CuTaS3/AgTaS3在水裂解析氢反应(HER)中的异质结构。结果表明,异质结构的形成使HER反应性增强,过电位降低,Tafel斜率降低。较高的双层电容(Cdl)值表明AgTaS3与CuTaS3结合后形成了更多的活性位点。这些结果证实了CuTaS3/AgTaS3异质结构在电催化和光催化过程中都能有效地生成H2。目前的工作可能为推进钽基硫化物材料的绿色制氢带来创新的看法。
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来源期刊
Journal of Cluster Science
Journal of Cluster Science 化学-无机化学与核化学
CiteScore
6.70
自引率
0.00%
发文量
166
审稿时长
3 months
期刊介绍: The journal publishes the following types of papers: (a) original and important research; (b) authoritative comprehensive reviews or short overviews of topics of current interest; (c) brief but urgent communications on new significant research; and (d) commentaries intended to foster the exchange of innovative or provocative ideas, and to encourage dialogue, amongst researchers working in different cluster disciplines.
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