Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 20, 2020
Previous Article Next Article

In situ confinement of Pt within three-dimensional MoO2@porous carbon for efficient hydrogen evolution

Author affiliations

Abstract

Promoting the industrialization and widespread application of Pt-based catalysts is essential to electrochemical water-splitting systems. However, the development of cost-effective Pt-based catalysts still remains a huge challenge. Here we report a novel confinement method of small Pt nanoparticles in three-dimensional MoO2@porous carbon (Pt–MoO2@PC) using a metal–organic framework-assisted replacement strategy. Porous carbon acts as a matrix to confine Pt, achieving a high dispersion of Pt nanoparticles and providing fast electron transfer and ion penetration during the hydrogen evolution reaction (HER). The MoO2 interface modulation leads to more thermal-neutral hydrogen adsorption free energy and thus enhances the intrinsic catalytic activity of Pt nanoparticles. The obtained Pt–MoO2@PC electrocatalyst with a low Pt amount of 8.32 wt% exhibits high HER performance, with an overpotential of 20 mV at −10 mA cm−2 and an 11-times higher mass activity than commercial Pt/C. This work can open new perspectives for the rational design of advanced electrocatalysts for sustainable energy applications.

Graphical abstract: In situ confinement of Pt within three-dimensional MoO2@porous carbon for efficient hydrogen evolution

Back to tab navigation

Supplementary files

Article information


Submitted
04 Mar 2020
Accepted
06 May 2020
First published
07 May 2020

J. Mater. Chem. A, 2020,8, 10409-10418
Article type
Paper

In situ confinement of Pt within three-dimensional MoO2@porous carbon for efficient hydrogen evolution

Y. Jiang, M. Yang, M. Qu, Y. Wang, Z. Yang, Q. Feng, X. Deng, W. Shen, M. Li and R. He, J. Mater. Chem. A, 2020, 8, 10409
DOI: 10.1039/D0TA02507K

Social activity

Search articles by author

Spotlight

Advertisements