Jump to main content
Jump to site search

Issue 4, 2020
Previous Article Next Article

Colloidal Co single-atom catalyst: a facile synthesis strategy and high catalytic activity for hydrogen generation

Author affiliations

Abstract

Developing highly active single-atom catalysts is one of the most significant issues for future renewable energy technologies. Here we present a facile but effective and efficient strategy for synthesizing colloidal Co single-atom catalysts with excellent catalytic activity using a copolymer, poly(isobutylene-alt-maleic anhydride) (ISOBAM-104), as a stabilizing agent. The catalytic activity of the as-prepared colloidal single-atom catalyst for hydrogen generation from hydrolysis of KBH4 in an alkaline solution was as high at about 14 300 mL-H2 min−1 g-Co−1, which was even higher than that of its Pt, Pd or Rh counterpart. Such a high catalytic activity of the colloidal catalyst was attributable to the in situ formed and well-stabilized Co single-atoms whose existence was confirmed by aberration-corrected high-angle annular dark-field scanning transmission electron microscopy. Moreover, quantum chemical calculations reveal that ISOBAM-104 has a higher binding energy with the Co catalyst than with the well-known conventional protective agents, including poly(N-vinyl-2-pyrrolidone), starch, carboxymethylcellulose sodium, polyvinyl alcohol, sodium polyacrylate and polyethylene glycol. In addition, the use of as-prepared Co catalysts resulted in a much lowered barrier for the dissociation reaction of BH4 than in the cases of using Pt, Pd and Rh counterpart catalysts.

Graphical abstract: Colloidal Co single-atom catalyst: a facile synthesis strategy and high catalytic activity for hydrogen generation

Back to tab navigation

Supplementary files

Article information


Submitted
08 Oct 2019
Accepted
23 Jan 2020
First published
24 Jan 2020

Green Chem., 2020,22, 1269-1274
Article type
Paper

Colloidal Co single-atom catalyst: a facile synthesis strategy and high catalytic activity for hydrogen generation

J. Wang, Z. Huang, L. Lu, Q. Jia, L. Huang, S. Chang, M. Zhang, Z. Zhang, S. Li, D. He, W. Wu, S. Zhang, N. Toshima and H. Zhang, Green Chem., 2020, 22, 1269
DOI: 10.1039/C9GC03477C

Social activity

Search articles by author

Spotlight

Advertisements