用多氧甲支持的Mo3S4 HER催化剂衍生出的光阴体的分子和材料工程
Jeoffrey Tourneur1, Bruno Fabre1, Gabriel Loget1
1Université Rennes , CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR6226, F-35000 Rennes , France.
Journal of the American Chemical Society
|June 27, 2019
概括
我们通过将{Mo3S4}集群与{P8W48}聚氧金属酸盐 (POMs) 协同结合,为高效的进化反应 (HER) 设计了一种新的催化剂. 这种协同 {Mo3S4} - {P8W48} 组件在同质和异质光电化学系统中表现出高性能.
科学领域:
- 材料科学
- 电化学
- 催化剂
背景情况:
- 有效演化反应 (HER) 催化剂的分子工程对于能量转化至关重要.
- 基于硫化 (MoS2) 的聚合物,特别是 (Mo3S4) 核心,是 HER 电催化剂的前景.
- 在分子层面控制催化剂的结构和功能可以增强催化剂的活性.
研究的目的:
- 通过分子工程开发一种新的催化剂,
- 研究{Mo3S4}集群和{P8W48}聚氧甲 (POMs) 之间的协同作用.
- 在同质和异质光电化学系统中评估催化剂的性能.
主要方法:
- {Mo3S4}集群与氧化还原活性{P8W48} POMs的共价结合形成了一个{Mo3S4}-{P8W48} (thio-POM) 组件.
- 同质催化实验以研究内在的HER性能.
- 使用微结构的p型制造异质光电化学装置,并通过滴和静电融入PEDOT薄膜来固定-POM共催剂.
主要成果:
- {Mo3S4}-{P8W48}组件表现出惊人的协同效应,导致了高的HER性能.
- 每个{P8W48}单位的{Mo3S4}核的固态度可以调整 (2-4核).
- 作为上的共催化剂,组件在模拟阳光下在+0.13V与RHE下达到10mA cm-2的光电密度.
- 修改为thio-POM/PEDOT的光阴极在 0 V 和 1 太阳照明下以 ~ 100 μmol cm-2 h-1 的速度产生 H2.
结论:
- {Mo3S4}和{P8W48} POMs的共价结合产生了一个高效的协同作用的HER催化剂.
- 在光电化学装置中,{Mo3S4}-{P8W48}组件表现出卓越的性能和稳定性.
- 这种分子工程方法为开发用于生产的先进电催化剂提供了有前途的策略.
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