Please use this identifier to cite or link to this item:
Scopus Web of Science® Altmetric
Type: Journal article
Title: Intermediate modulation on noble metal hybridized to 2D metal-organic framework for accelerated water electrocatalysis
Author: Guo, C.
Jiao, Y.
Zheng, Y.
Luo, J.
Davey, K.
Qiao, S.
Citation: Chem, 2019; 5(9):2429-2441
Publisher: Elsevier
Issue Date: 2019
ISSN: 2451-9308
Statement of
Chunxian Guo, Yan Jiao, Yao Zheng, Jun Luo, Kenneth Davey, Shi-Zhang Qiao
Abstract: The rational modulation of reaction intermediates is critical to achieving high-performance heterogeneous catalysis. However, practical realization remains challenging. Using water electrocatalysis as a model reaction, we report an interfacial-bond-induced intermediate modulation to accelerate the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) by hybridizing a 2D nickel metal-organic framework (MOF) and Pt nanocrystals into a heterostructure. The design is initially verified via theoretical calculations, indicating charge relocation on newly formed Ni–O–Pt interfacial bonds for increased OH* adsorption energy together with reduced H* adsorption energy. Experimental findings confirm the formation of the Ni–O–Pt bonds, which electronically modify the heterostructure to increase electron density for Pt and the high-energy Ni 3d state for the MOF, optimizing the adsorption for H* and OH*, respectively. This hybridized material delivered HER activity of 7.92 mA μg−1 Pt, which is among the best reported for alkaline electrocatalysts, and an improved OER activity.
Rights: © 2019 Elsevier Inc.
RMID: 0030135514
DOI: 10.1016/j.chempr.2019.06.016
Grant ID:
Appears in Collections:Chemical Engineering publications

Files in This Item:
There are no files associated with this item.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.