化-Sn 提高了 BiOCl 纳米板在过氧化电催化合成上的性能
Shijie Zhang1, Yabing Wang1, Chenghang Jiang1
1Institute of Industrial Catalysis, State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, Zhejiang University of Technology, Hangzhou, 310032, China.
Small (Weinheim an der Bergstrasse, Germany)
|September 23, 2024
概括
研究人员开发了Sn-BiOCl纳米片,通过两电子氧降解反应 (2e-ORR) 通过高效的电化学过氧化 (H2O2) 生产. 这种绿色合成方法为传统工艺提供了一个有前途的替代方案.
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
- 绿色化学 绿色化学
背景情况:
- 电化学两电子氧降解反应 (2e-ORR) 为过氧化 (H2O2) 合成提供了一条可持续的途径,可能取代能源密集的 antraquinone 过程.
- 为2e-ORR开发具有成本效益和高效率的电催化剂仍然是绿色化学和可持续能源研究的重大挑战.
研究的目的:
- 设计和合成新的Sn-BiOCl纳米板电催化剂,以提高2e-ORR性能.
- 研究催化机制,了解Sn和Bi原子在提高H2O2选择性和产量的作用.
- 探索电化学生产的H2O2用于污染物降解的实际应用.
主要方法:
- 合成Sn-BiOCl纳米板电催化剂.
- 使用循环电压测量和旋转盘电极测量等技术对2e-ORR进行电化学表征.
- 在现场减弱总反射表面增强红外吸收光谱 (ATR-SEIRAS) 研究反应中间体.
- 对H2O2生产和在染料降解中的应用进行流细胞装置测试.
主要成果:
- Sn-BiOCl纳米板实现了92.9%的高H2O2选择性和10628毫克L-1h-1的产量.
- 在现场ATR-SEIRAS发现,与原始BiOCl相比,Sn-BiOCl增强了*OOH中间体的吸附和激活.
- 合成的H2O2在20分钟内有效降解了95%的染料 (RhB,MB,MO) 在流细胞设置中.
结论:
- Sn-BiOCl纳米板是通过2e-ORR选择性生产H2O2的高效电催化剂.
- Sn和Bi原子的协同作用对于增强催化活性和选择性至关重要.
- 这项工作表明了在现场产生H2O2和在环境修复中应用H2O2的潜力.
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