Scholarlink

<p>In this work, the TiO<sub>2</sub>/Sb<sub>2</sub>S<sub>3</sub> nanorod arrays (NRAs) were synthesized through a two-stage hydrothermal route for photoelectrochemical (PEC) water splitting. The effect of annealing treatment in Ar ambience on the PEC activity of TiO<sub>2</sub>/Sb<sub>2</sub>S<sub>3</sub> composite sample was investigated by electrochemical impedance analysis, including Nyquist and Mott-Schottky (M-S) plots. It was demonstrated that vacuum annealing could crystallize Sb<sub>2</sub>S<sub>3</sub> component and change its color from red to black, leading to an increment of photocurrent density from 1.9 A/m<sup>2</sup> to 4.25 A/m<sup>2</sup> at 0 V versus saturated calomel electrode (V<sub>SCE</sub>). The enhanced PEC performance was mainly attributed to the improved visible light absorption. Moreover, annealing treatment facilitated retarding the electron-hole recombination occurred at the solid/liquid interfaces. Our work might provide a novel strategy for enhancing the PEC performance of a semiconductor electrode.</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

Enhanced photoelectrochemical performance of TiO2/Sb2S3 nanorod arrays by annealing in Ar ambience

  • 期刊论文

  • 发表日期：

    2025年6月9日

查看全文
  • Meirong Sui,
  • Xiuquan Gu

摘要

In this work, the TiO2/Sb2S3 nanorod arrays (NRAs) were synthesized through a two-stage hydrothermal route for photoelectrochemical (PEC) water splitting. The effect of annealing treatment in Ar ambience on the PEC activity of TiO2/Sb2S3 composite sample was investigated by electrochemical impedance analysis, including Nyquist and Mott-Schottky (M-S) plots. It was demonstrated that vacuum annealing could crystallize Sb2S3 component and change its color from red to black, leading to an increment of photocurrent density from 1.9 A/m2 to 4.25 A/m2 at 0 V versus saturated calomel electrode (VSCE). The enhanced PEC performance was mainly attributed to the improved visible light absorption. Moreover, annealing treatment facilitated retarding the electron-hole recombination occurred at the solid/liquid interfaces. Our work might provide a novel strategy for enhancing the PEC performance of a semiconductor electrode.