灰色中孔性SnO2催化剂用于CO2电还原,具有高部分电流密度和形式选择性
Mabrook S Amer1, Haneen A AlOraij1, Kuo-Wei Huang2
1Electrochemical Sciences Research Chair (ESRC), Chemistry Department, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia.
Environmental research
|April 15, 2024
概括
我们开发了介孔灰色二氧化 (SnO2) 电催化剂,以实现高效的电化学二氧化碳减排. 这些催化剂显示出高活性和选择性用于格式生产,为二氧化碳转化提供了有前途的解决方案.
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
- 催化剂是一种催化剂.
背景情况:
- 半导体具有独特的特性,有利于催化和能源应用.
- 电化学二氧化碳减排 (eCO2RR) 是将二氧化碳转化为有价值的化学物质的一个关键技术.
研究的目的:
- 使用蒸发诱导联合组装 (EICA) 方法制造中孔灰色SnO2 (MGS) 电催化剂.
- 调查MGS在电化学CO2减排中的性能.
主要方法:
- 使用Pluronic P123作为EICA的模板.
- 采用基于碳的热处理,以创建具有活跃站点和氧气空缺的MGS.
- 在一个流量细胞中测试eCO2RR的MGS.
主要成果:
- 实现了高的催化活性和对格式的选择性.
- 在1.3V与RHE相比,证明了部分电流密度为-234 mA cm-2和法拉代效率 (FE) 为93.60%.
- MS-1.5@350N-400A电极在 -0.6V RHE显示98%的FE,并且由于高表面积和活性点,在 -0.6至 -1.2V RHE显示稳定的FE (96±1%).
结论:
- 开发的MGS电催化剂在eCO2RR方面表现出色.
- 较高的表面积,活性点和氧气空隙有助于优越的催化活性和稳定性.
- 这项工作提出了一种有前途的方法,用于有效地将二氧化碳转化为格式.
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