Scholarlink

<p>Atomic-scale engineering enables precise modulation of catalytic materials, facilitating the construction of efficient active sites and improving charge carrier utilization at the atomic level. Based on this, we employed a post-synthetic modification strategy to anchor lanthanum (La) single-atom onto the metal–organic framework DUT-67, constructing an efficient photocatalytic system for the reduction of hexavalent chromium (Cr(VI)). La SAs, anchored via coordination with  Zr–O  clusters, function as both adsorption active sites and electron-transfer mediators, significantly enhance the separation of photogenerated charge carriers and optimize the surface reaction kinetics of the DUT-67. Photocatalytic experiments demonstrate that La-DUT-67 exhibits outstanding Cr(VI) reduction performance under light illumination. Specifically, La-DUT-67-2 achieved a removal efficiency of 92.4% within 40 min while also displaying excellent stability and anti-interference capability. This work not only provides an effective photocatalytic material for remediating hexavalent chromium pollution but also establishes a more solid theoretical foundation for the field of single-atom-modified metal–organic frameworks.</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

Post-synthetic modification of DUT-67 with La single-atom for efficient photocatalytic reduction of Cr(VI) and mechanistic investigation

  • 期刊论文

  • 发表日期：

    2026年6月24日

查看全文
  • Yang Luo,
  • Yulong Xiang,
  • Nan Zheng,
  • Xiaoli Dong,
  • Honglin Zhao,
  • Jiayao Zheng

摘要

Atomic-scale engineering enables precise modulation of catalytic materials, facilitating the construction of efficient active sites and improving charge carrier utilization at the atomic level. Based on this, we employed a post-synthetic modification strategy to anchor lanthanum (La) single-atom onto the metal–organic framework DUT-67, constructing an efficient photocatalytic system for the reduction of hexavalent chromium (Cr(VI)). La SAs, anchored via coordination with  Zr–O  clusters, function as both adsorption active sites and electron-transfer mediators, significantly enhance the separation of photogenerated charge carriers and optimize the surface reaction kinetics of the DUT-67. Photocatalytic experiments demonstrate that La-DUT-67 exhibits outstanding Cr(VI) reduction performance under light illumination. Specifically, La-DUT-67-2 achieved a removal efficiency of 92.4% within 40 min while also displaying excellent stability and anti-interference capability. This work not only provides an effective photocatalytic material for remediating hexavalent chromium pollution but also establishes a more solid theoretical foundation for the field of single-atom-modified metal–organic frameworks.

Graphical abstract