带诱导的空心二元金属有机框架衍生Fe-化-碳纳米材料用于氧气演变
Huijie Ni1, Shaojie Xu1, Rong Lin1
1Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, Zhejiang, PR China.
Journal of colloid and interface science
|May 25, 2024
概括
研究人员开发了新型空心二元化化伊米达酸框架 (ZIF-67@PBA),用于高效的氧化演化反应 (OER) 催化. 这些非贵金属催化剂为气生产提供了具有成本效益的途径.
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:
- 高效,具有成本效益的催化剂对于生产中的工业氧化演化反应 (OER) 至关重要.
- 非贵金属催化剂被寻求以取代昂贵的贵金属.
- 金属有机框架 (MOF) 为催化应用提供可调节的结构.
研究的目的:
- 通过使用联体诱导的MOF-on-MOF方法,合成新型空心二元氧化物伊米达酸框架67 (ZIF-67) 和普鲁士蓝色类似物 (PBA) 异构结构 (ZIF-67@PBA).
- 为了研究金属组成对OER的催化性能的影响.
- 探索催化剂组件之间的协同效应,以提高电化学活性.
主要方法:
- 混合MOF-在-MOF合成策略. 在MOF合成策略.
- 用质诱导方法制造ZIF-67@PBA异构结构.
- 用不同的Co2+/Zn2+比率对ZIF-67进行热解,以形成Co_xFe-ZP催化剂.
- 电化学表征包括超电位和Tafel斜率测量.
主要成果:
- 成功合成了空洞的二进制ZIF-67@PBA异构结构 (Co_xFe-ZP).
- 展示了空心石墨碳纳米材料和Fe-doped Co纳米颗粒之间的协同效应.
- 最佳的Co_0.3Fe-ZP催化剂在10 mA cm−2时实现了302 mV的超电位,Tafel斜率为60.0 mV dec−1.
- 增强的OER活动归因于有利的形态和组成.
结论:
- 联体诱导的MOF-on-MOF方法提供了一个有效的途径,用于新型二进制MOF异构结构.
- Co_xFe-ZP催化剂在生产中表现出有前途的OER性能.
- 形态和组成在增强的电化学活性中起着关键作用.
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