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Updated: Jun 26, 2025

A Continuous-flow Photocatalytic Reactor for the Precisely Controlled Deposition of Metallic Nanoparticles

A Continuous-flow Photocatalytic Reactor for the Precisely Controlled Deposition of Metallic Nanoparticles

Published on: April 10, 2019

表面植入的单原子PT-N_x复合体,具有精确调节的协调球体,用于高效的电子接收器-诱导接口电子传输

Xinghao Zhang¹, Zhigang Li¹, Hanxi Li¹

¹School of Materials Science and Engineering National Institute for Advanced Materials, TKL of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin, 300350, China.

Angewandte Chemie (International ed. in English)

|May 8, 2024

概括

研究人员通过将接到NH2-MIL-125.5上来开发出一种新的MOF分子催化剂. 这通过优化电子转移途径和Pt单原子协调来增强光催化的产生.

科学领域:

材料科学材料科学材料科学
催化剂是一种催化剂.
纳米技术纳米技术

背景情况:

像NH2-MIL-125这样的金属有机框架 (MOF) 是有前途的光催化剂.
有效的电荷分离对于改善光催化活性至关重要.
控制单原子催化剂的协调环境是调整反应性的关键.

研究的目的:

开发一种新的MOF分子混合催化剂,用于增强光催化进化.
为了研究单原子协调对催化性能的影响.
为了阐明光诱导电荷迁移的机制.

主要方法:

通过胺反应对NH2-MIL-125与Pt(bpy) Cl2进行后修改.
进一步功能化以精确控制Pt单原子协调 (PtN2和PtN4).
材料性质的表征和光催化进化活动的测量.

主要成果:

该Pt(bpy) Cl2修改将电荷迁移重定向到PtNx,增强电子转移和分离.
NML-PtN2催化剂实现了7.608 mmol g-1 h-1的进化率,显著超过原始MOF和NML-PtN4.
显而易见的高量子收益率 (4.01%) 和周转频率 (190.3 h-1) 证明了有效利用太阳能.

结论:

精确调节Pt单原子协调球对于优化基于MOF的光催化剂至关重要.
开发的MOF分子催化剂为高效的电荷载体分离提供了一个新的策略.
这项工作为设计用于能源应用的先进单原子催化剂提供了深刻的见解.

关键词:

协调领域协调领域 MOFs 的使用情况.光催化作用的光催化一个单原子的原子.表面接种 (surface grafting) 是一种表面接种.

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