Palladium as a Superior Cocatalyst to Platinum for Hydrogen Evolution by Using Covalent Triazine Frameworks as a Support.

Author(s) Liu, M.; Wang, X.; Liu, J.; Wang, K.; Jin, S.; Tan, B.
Journal ACS Appl Mater Interfaces
Date Published 2020 Feb 20
Abstract

Abundant pyridinic nitrogen in the triazine units of covalent triazine frameworks (CTFs) is very useful in various heterogeneous catalysis reaction. Herein, a tunable CTF platform with the same porous structure was designed and synthesized to study the interaction between palladium / platinum (Pd / Pt) and pyridinic nitrogen of CTFs. The smaller Pd nanoparticles were formed because of the stronger interaction between Pd and pyridinic nitrogen of CTFs, which is more beneficial for the separation of photogenerated electron-hole pairs. Moreover, the stronger interaction between the Pd nanoparticles and CTFs is also beneficial for photoelectron transfer. Under the same conditions, the hydrogen evolution rate of 1wt%Pd@CTF-HC6 is up to 11 times more than that of 1wt%Pt@CTF-HC6. The hydrogen evolution rate of 1wt%Pd@CTF-N approaches 10556 μmol h-1g-1 and is about 5 times more than that of 1wt%Pt@CTF-N.

DOI 10.1021/acsami.9b21903
ISSN 1944-8252
Citation Liu M, Wang X, Liu J, Wang K, Jin S, Tan B. Palladium as a Superior Cocatalyst to Platinum for Hydrogen Evolution by Using Covalent Triazine Frameworks as a Support. ACS Appl Mater Interfaces. 2020.