Scholarlink

Abstract <p>The wide bandgap structures and rapid carrier recombination are major factors limiting the photocatalytic activity of semiconductors. In this work, one dimension (1D) g-C<sub>3</sub>N<sub>4</sub> with narrowed bandgap (1DCN) and three dimension (3D) Bi<sub>2</sub>MoO<sub>6</sub> with inter-crossed nanosheet structure were combined into a heterojunction by a simple self-assembly method, which greatly improved the degradation efficiency of pollutants (methylene blue (MB) and Cr(VI)). The results showed that the degradation efficiency of MB by 1DCN/Bi<sub>2</sub>MoO<sub>6</sub> could reach 97% after 210 min, and the reduction rate of Cr(VI) could reach more than 75% within 50 min under an illumination source of a 500W lamp source. The trapping analyses were performed and exhibited that the key reactive species in the 1DCN/Bi<sub>2</sub>MoO<sub>6</sub> photodegradation were ·O<sub>2</sub><sup>−</sup> and OH radicals in the reaction. In addition, the combined structure of 1D/3D effectively reduces the electron transport distance and increases the electron transfer rate, thereby further improving the catalytic effect of the heterojunction. The excellent catalytic activities of 1DCN/Bi<sub>2</sub>MoO<sub>6</sub> have broad application prospects and provide reference for the combination of other heterostructures.</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

Narrow bandgap 1D g-C3N4/3D-Bi2MoO6 self-assembled heterojunction structure with enhanced photocatalytic performance for removal of MB or Cr (VI)

  • 期刊论文

  • 发表日期：

    2025年1月24日

查看全文
  • Zhizhong Qin,
  • Chuande Liu,
  • Jing Tan,
  • Houxu Mei,
  • Wen Xue,
  • Wei Wei

摘要

Abstract

The wide bandgap structures and rapid carrier recombination are major factors limiting the photocatalytic activity of semiconductors. In this work, one dimension (1D) g-C3N4 with narrowed bandgap (1DCN) and three dimension (3D) Bi2MoO6 with inter-crossed nanosheet structure were combined into a heterojunction by a simple self-assembly method, which greatly improved the degradation efficiency of pollutants (methylene blue (MB) and Cr(VI)). The results showed that the degradation efficiency of MB by 1DCN/Bi2MoO6 could reach 97% after 210 min, and the reduction rate of Cr(VI) could reach more than 75% within 50 min under an illumination source of a 500W lamp source. The trapping analyses were performed and exhibited that the key reactive species in the 1DCN/Bi2MoO6 photodegradation were ·O2− and OH radicals in the reaction. In addition, the combined structure of 1D/3D effectively reduces the electron transport distance and increases the electron transfer rate, thereby further improving the catalytic effect of the heterojunction. The excellent catalytic activities of 1DCN/Bi2MoO6 have broad application prospects and provide reference for the combination of other heterostructures.

Graphical Abstract