纳米反应器
材料科学
海胆
调制(音乐)
对偶(语法数字)
纳米技术
氢
生态学
生物
物理
纳米颗粒
艺术
文学类
量子力学
声学
作者
Ling Wang,Chunyan Zhang,Z. Cao,Guang Zeng,Jian Liu,Sheng Ye
标识
DOI:10.1002/adfm.202406670
摘要
Abstract Electrocatalytic hydrogen evolution reaction (HER) is a promising strategy for realizing carbon neutralization as well as for the production of green hydrogen. Molybdenum dioxide (MoO 2 ), possesses acid corrosion resistance and near‐metal‐level conductivity, endowing its widespread application in acidic HER. However, due to spatial barriers at the edge of sites and weak H * adsorption, the HER activity of MoO 2 is greatly limited. Herein, a sea urchin‐like Pt@N‐MoO 2 nanoreactor is designed, in which the bulk electronic structure and surface‐active sites are modulated by N doping and Pt single atoms anchoring, respectively. DFT calculations indicate that Mo─N coupling changes the charge density of Mo atoms, enhances the adsorption of H * , and thus optimizes the Gibbs free energy. The appearance of Pt‐O/N sites compensates for the lack of active sites exposed by MoO 2 , while promoting the desorption of H 2 from the catalyst surface and accelerating the HER process. This work provides an effective strategy for activating inert electrocatalysts to promote energy conversion via a dual modulation strategy of bulk and surface engineering.
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