Scholarlink

<p>Antimony sulphoselenide Sb<sub>2</sub>(S<sub>1−<i>x</i></sub>Se<sub><i>x</i></sub>)<sub>3</sub> solid solution exhibits tailored semiconducting characteristics that are widely useful in various optoelectronic, catalytic and photocatalytic applications. In addition, these compounds are nontoxic and made of earth abundant constituent elements. In this work, the viability of syntheses of Sb<sub>2</sub>(S<sub>1−<i>x</i></sub>Se<sub><i>x</i></sub>)<sub>3</sub> solid solution series (<i>x</i> = 0, 0.6, 1.2, 2.1, 2.4 and 1) via dry ball milling method in Ar atmosphere is evaluated. X-ray diffraction, Raman spectroscopy analysis confirmed the formation of single-phase Sb<sub>2</sub>(S<sub>1−<i>x</i></sub>Se<sub><i>x</i></sub>)<sub>3</sub> bulk compounds with orthorhombic crystal structure. Scanning electron microscopy, transmission electron microscopy and X-ray spectroscopy analyses allowed for a comprehensive understanding of the morphological and compositional details of the solid solution compound series. Optical absorption and band gap values were estimated from diffused reflectance measurements and found to vary between 1.61 and 1.13&#xa0;eV, confirming the composition-controlled bandgap tunability. Cyclic Voltammetry, Electrochemical Impedance Spectroscopy and Linear Sweep Voltammetry analyses were done to infer the electrocatalytic properties of the series. It is inferred that among all the compositions, Sb<sub>2</sub>S<sub>3</sub> showed low charge transfer resistance (~ 73 Ω) and onset potential of 197&#xa0;mV versus RHE for hydrogen evolution reaction.</p> Graphical abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Robust high-yield dry mill syntheses of nanocrystalline Sb2(S,Se)3 solid solution exhibiting tunable band gap and electrocatalytic properties

  • 期刊论文

  • 发表日期：

    2025年12月29日

查看全文
  • Tharani Priya Kalaiyarasan,
  • Srinivasan Moosi Govindharajulu,
  • Thatheyus Peter Xavier,
  • Malar Piraviperumal

摘要

Antimony sulphoselenide Sb2(S1−xSex)3 solid solution exhibits tailored semiconducting characteristics that are widely useful in various optoelectronic, catalytic and photocatalytic applications. In addition, these compounds are nontoxic and made of earth abundant constituent elements. In this work, the viability of syntheses of Sb2(S1−xSex)3 solid solution series (x = 0, 0.6, 1.2, 2.1, 2.4 and 1) via dry ball milling method in Ar atmosphere is evaluated. X-ray diffraction, Raman spectroscopy analysis confirmed the formation of single-phase Sb2(S1−xSex)3 bulk compounds with orthorhombic crystal structure. Scanning electron microscopy, transmission electron microscopy and X-ray spectroscopy analyses allowed for a comprehensive understanding of the morphological and compositional details of the solid solution compound series. Optical absorption and band gap values were estimated from diffused reflectance measurements and found to vary between 1.61 and 1.13 eV, confirming the composition-controlled bandgap tunability. Cyclic Voltammetry, Electrochemical Impedance Spectroscopy and Linear Sweep Voltammetry analyses were done to infer the electrocatalytic properties of the series. It is inferred that among all the compositions, Sb2S3 showed low charge transfer resistance (~ 73 Ω) and onset potential of 197 mV versus RHE for hydrogen evolution reaction.

Graphical abstract