Pt modified NiMoO 4 -GO/NF nanorods withstrong metal-support interaction as efficient bifunctional catalysts for overall water splitting.

Autor: Deng X; College of Materials Science and Engineering, Sichuan University, Chengdu 610065, Sichuan Province, PR China., Chen J; Soochow Institute for Energy and Materials Innovations (SIEMSI), Soochow University, Suzhou 215021, Jiangsu Province, PR China., Zhang C; College of Materials Science and Engineering, Sichuan University, Chengdu 610065, Sichuan Province, PR China., Yan Y; College of Materials Science and Engineering, Sichuan University, Chengdu 610065, Sichuan Province, PR China., Wu B; College of Materials Science and Engineering, Sichuan University, Chengdu 610065, Sichuan Province, PR China., Zhang J; College of Materials Science and Engineering, Sichuan University, Chengdu 610065, Sichuan Province, PR China., Wang G; College of Materials Science and Engineering, Sichuan University, Chengdu 610065, Sichuan Province, PR China; Engineering Research Center of Alternative Energy Materials & Devices, Ministry of Education, Sichuan University, Chengdu 610065, PR China., Wang R; College of Materials Science and Engineering, Sichuan University, Chengdu 610065, Sichuan Province, PR China; Engineering Research Center of Alternative Energy Materials & Devices, Ministry of Education, Sichuan University, Chengdu 610065, PR China. Electronic address: rl.wang@scu.edu.cn., Chen J; College of Materials Science and Engineering, Sichuan University, Chengdu 610065, Sichuan Province, PR China; Engineering Research Center of Alternative Energy Materials & Devices, Ministry of Education, Sichuan University, Chengdu 610065, PR China. Electronic address: jwchen@scu.edu.cn.
Jazyk: angličtina
Zdroj: Journal of colloid and interface science [J Colloid Interface Sci] 2023 Jun 15; Vol. 640, pp. 928-939. Date of Electronic Publication: 2023 Mar 07.
DOI: 10.1016/j.jcis.2023.03.018
Abstrakt: Catalysts for the electrolysis of water are critical in the production of hydrogen for the energy industry. The use of strong metal-support interactions (SMSI) to modulate the dispersion, electron distribution, and geometry of active metals is an effective strategy for improving catalytic performance. However, in currently used catalysts, the supporting effect does not significantly contribute directly to catalytic activity. Consequently, the continued investigation of SMSI, using active metals to stimulate the supporting effect for catalytic activity, remains very challenging. Herein, the atomic layer deposition technique was employed to prepare an efficient catalyst composed of platinum nanoparticles (Pt NPs) deposited on nickel-molybdate (NiMoO 4 ) nanorods. Nickel-molybdate's oxygen vacancies (V o ) not only help anchor highly-dispersed Pt NPs with low loading but also strengthen the SMSI. The valuable electronic structure modulation between Pt NPs and V o resulted in a low overpotential of the hydrogen and oxygen evolution reactions, returning results of 190 mV and 296 mV, respectively, at a current density of 100 mA cm -2 in 1 M KOH. Ultimately, an ultralow potential (1.515 V) for the overall decomposition of water was achieved at 10 mA cm -2 , outperforming state-of-art catalysts based on the Pt/C || IrO 2 couple (1.668 V). This work aims to provide reference and a concept for the design of bifunctional catalysts that apply the SMSI effect to achieve a simultaneous catalytic effect from the metal and its support.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023. Published by Elsevier Inc.)
Databáze: MEDLINE
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