电催化电催化电催化电催化电催化电催化电催化电催化电催化电催化电催化电催化电催化电催化电催化电催化电催化电催化电催化电催化电催化电催化电催化电催化电催化电催化电催化电催化电催化电催化电催化电催化电催化电催化电催化电催化电催化电催化电催化
Chamniphol Taechaworaphong1, Methasit Juthathan1, Patchanita Thamyongkit1
1Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand.
ChemPlusChem
|February 17, 2024
概括
从石墨烯氧化物 (GO) 上的铜复合物制成的新催化剂使用海水有效地产生气 (H2). 这为实现净零排放目标提供了一个可持续的能源解决方案.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 可持续能源 可持续能源
背景情况:
- 电化学演化反应 (HER) 是使用可再生电力生产绿色的关键.
- 像海水这样的中性pH电解质对于环保能源是理想的,符合净零目标.
研究的目的:
- 开发和研究新的异质催化剂,以在中性电解质中有效地产生HER.
- 评估分散在碳材料上的铜-希夫基复合物的性能.
主要方法:
- 通过分散铜-N4-Schiff基复合物 (CuL) 在多壁碳纳米管 (CNT) 和石墨烯氧化物 (GO) 上通过非共价相互作用来合成异质催化剂.
- 研究了CuL/CNT和CuL/GO在中性NaCl溶液和天然海水中的HER性能.
- 测量电化学性能,包括超电位和法拉达效率.
主要成果:
- CuL/GO的HER活性高于CuL/CNT,这归因于GO上的CuL固定较大.
- 在中性pH 7的NaCl溶液中,CuL/GO显示出令人满意的HER性能.
- 在天然海水中,CuL/GO的性能显著提高,在 -0.6 V 与 RHE 的 H2 3 倍,与 NaCl 溶液相比,Faraday 的效率为 70%.
- 在 -10 mA/cm2 达到 139 mV 的低超电位.
结论:
- 在中性电解质中,特别是海水中,CuL/GO 是一种有前途的异质催化剂,可以有效地激活HER.
- 这些发现支持CuL/GO在可持续生产中的潜在使用,有助于实现净零排放目标.
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