废水的分子工程变成单位电催化剂,用于生产过氧化,具有工业级电流
Qianqing Guo1, Baojing Huang1, Guangyong Bo1
1State Key Laboratory of Green Papermaking and Resource Recycling, School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China.
Angewandte Chemie (International ed. in English)
|October 10, 2025
概括
这项研究将危险的废水转化为高效的单站式电催化剂,用于生产过氧化 (H2O2). 新型催化剂实现了高选择性和生产率,为工业应用提供了可持续的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 环境化学环境化学
背景情况:
- 含的工业废水对环境构成风险.
- 传统的治疗方法通常是不够的.
- 需要先进的战略来重新利用危险废物.
研究的目的:
- 从废水中开发分子工程复合体,将其转化为单站式电催化剂.
- 为了研究两电子氧降解反应 (2e− ORR) 的电催化性能.
- 从工业废物中实现分散的过氧化 (H2O2) 生产.
主要方法:
- 协调以化学为指导的方法来设计复合物.
- 使用二甲基二甲基碳酸盐 (SDD) 进行联体场定制.
- 在工业电流密度下,在流电池设置中的电催化试验.
主要成果:
- 衍生的SDD-Ni催化剂在H2O2合成中实现了>95%的法拉代效率.
- 创纪录的H2O2生产率为70.75 mol gcat−1 h−1 在781 mA cm−2.2时实现.
- 催化剂在使用真实废水的连续流量电池运行中表现出超过450小时的稳定性.
结论:
- SDD-Ni催化剂为H2O2生产提供了一种实用且可持续的解决方案.
- 方形平面的Ni-S4协调结构是催化剂选择性的关键.
- 将危险的废物转化为有价值的电催化系统是可行的.
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