Scholarlink

<p>The development of efficient photocatalysts for nitrogen fixation is often hindered by limited visible-light absorption. In this work, a series of UiO-66 materials (UiO-66, UiO-66-Br, UiO-66-NH<sub>2</sub>, and UiO-66-NO<sub>2</sub>) with different functional groups were synthesized through solvothermal reaction, which showed diverse light harvesting ability. Among them, UiO-66-NH<sub>2</sub> exhibits the superior photocatalytic performance, achieving an ammonia production rate of 11.59&#xa0;μmol&#xa0;g<sup>−1</sup>&#xa0;h<sup>−1</sup>, which is 2.38 times higher than that of the pristine UiO-66. Comprehensive characterization reveals that the electron-donating –NH<sub>2</sub> group extends the light absorption into the visible region and significantly enhances the separation and migration of photogenerated charge carriers. This study highlights the efficacy of ligand functionalization in tailoring metal–organic frameworks for efficient solar-driven nitrogen fixation.</p> Graphical abstract <p>The introduction of –NH<sub>2</sub> group significantly enhanced the photocatalytic nitrogen fixation (transforming N<sub>2</sub> into NH<sub>4</sub><sup>+</sup>) activity of UiO-66.</p> <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

From UiO-66 to UiO-66-NH2: enhanced photocatalytic nitrogen fixation via ligand engineering

  • 期刊论文

  • 发表日期：

    2025年12月4日

查看全文
  • Xinyu Zhang,
  • Tianqi Shen,
  • Yiming Zhang,
  • Lan Li,
  • Muhammad Nadeem Akhtar,
  • Xusheng Wang

摘要

The development of efficient photocatalysts for nitrogen fixation is often hindered by limited visible-light absorption. In this work, a series of UiO-66 materials (UiO-66, UiO-66-Br, UiO-66-NH2, and UiO-66-NO2) with different functional groups were synthesized through solvothermal reaction, which showed diverse light harvesting ability. Among them, UiO-66-NH2 exhibits the superior photocatalytic performance, achieving an ammonia production rate of 11.59 μmol g−1 h−1, which is 2.38 times higher than that of the pristine UiO-66. Comprehensive characterization reveals that the electron-donating –NH2 group extends the light absorption into the visible region and significantly enhances the separation and migration of photogenerated charge carriers. This study highlights the efficacy of ligand functionalization in tailoring metal–organic frameworks for efficient solar-driven nitrogen fixation.

Graphical abstract

The introduction of –NH2 group significantly enhanced the photocatalytic nitrogen fixation (transforming N2 into NH4+) activity of UiO-66.