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Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
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有效的可见光驱动的二氧化碳减少使用生物灵感分子催化剂.

Jing Zhang1, Ping She1, Qiang Xu1

  • 1State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, International Center of Future Science, Jilin University, 2699 Qianjin Street, Changchun, 130012, P. R. China.

ChemSusChem
|February 7, 2024
PubMed
概括

本研究介绍了一种生物启发的催化剂,用于利用可见光有效的光化学降低二氧化碳 (CO2) 到一氧化碳 (CO). 催化剂具有很高的选择性和大量的营业额,为可持续的二氧化碳利用铺平了道路.

关键词:
减少二氧化碳的减少复合物的复合物一致的催化剂.分子催化剂分子催化剂可见光 可见光 可见光.

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科学领域:

  • 无机化学 无机化学
  • 光催化作用的光催化
  • 可持续化学 可持续化学

背景情况:

  • 开发有效的催化剂来减少二氧化碳 (CO2) 对于可持续能源和缓解气候变化至关重要.
  • 生物灵感分子催化剂为传统异质系统的二氧化碳转化提供了有希望的替代品.
  • 基于的复合物正在积极研究它们在氧化还原反应中的催化活性.

研究的目的:

  • 为了合成和描述一种基于的新型分子催化剂,用于光化学减少二氧化碳.
  • 为了评估催化剂在可见光照射下的效率,选择性和稳定性.
  • 探索这种生物灵感催化剂在实际二氧化碳利用中的潜力.

主要方法:

  • 使用包括LC-HRMS和X射线晶体学在内的技术合成和表征催化剂[Ni(N2S2)]Cl2.
  • 在同质条件下进行的光催化二氧化碳减排实验,使用光敏剂 ([Ru(bpy) 3Cl2) 和牺牲电子供体 (BIH).
  • 分析反应产物,选择性,周转数 (),周转频率 (TOF) 和表面量子产量 (AQY).

主要成果:

  • 催化剂在Ni (II) 中心周围呈现出扭曲的八面体几何形状.
  • 实现了对一氧化碳 (CO) 的高选择性 (89%).
  • 在8小时内,记录了7991的非凡的营业额 (),TOF为1079h-1和AQY为1.08%.

结论:

  • 在可见光下,生物启发的分子催化剂对二氧化碳在可见光下被光化学减少为二氧化碳有效.
  • 催化剂表现出高效率,选择性和稳定性,使其成为转化二氧化碳的有希望的候选者.
  • 有控制的实验证实了催化剂,光和电子捐赠者在减少过程中的重要作用.