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Title: Core–shell PdPb@Pd aerogels with multiply-twinned intermetallic nanostructures: facile synthesis with accelerated gelation kinetics and their enhanced electrocatalytic properties

Journal Article · · Journal of Materials Chemistry. A
DOI: https://doi.org/10.1039/C7TA11233E · OSTI ID:1433968

Delicately engineering well-defined noble metal aerogels with favorable structural and compositional features is of vital importance for wide applications. Here, we reported a one-pot and facile method for synthesizing core–shell PdPb@Pd hydrogels/aerogels with multiply-twinned grains and an ordered intermetallic phase using sodium hypophosphite as a multifunctional reducing agent. Due to the accelerated gelation kinetics induced by increased reaction temperature and the specific function of sodium hypophosphite, the formation of hydrogels can be completed within 4 h. As a result, owing to their unique porous structure and favorable geometric and electronic effects, the optimized PdPb@Pd aerogels exhibit enhanced electrochemical performance towards ethylene glycol oxidation with a mass activity of 5.8 times higher than Pd black.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0012704; AC05-76RL01830.
OSTI ID:
1433968
Alternate ID(s):
OSTI ID: 1434119
Report Number(s):
BNL-203501-2018-JAAM; JMCAET; TRN: US1802396
Journal Information:
Journal of Materials Chemistry. A, Vol. 6, Issue 17; ISSN 2050-7488
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 49 works
Citation information provided by
Web of Science

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Cited By (10)

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Metal–organic frameworks-based catalysts for electrochemical oxygen evolution journal January 2019
A dopamine-induced Au hydrogel nanozyme for enhanced biomimetic catalysis journal January 2019
Ternary PtRuCu aerogels for enhanced methanol electrooxidation journal January 2019
Ultrathin nanodendrite surrounded PtRuNi nanoframes as efficient catalysts for methanol electrooxidation journal January 2019
Tunable synthesis of multiply twinned intermetallic Pd 3 Pb nanowire networks toward efficient N 2 to NH 3 conversion journal January 2019
Specific ion effects directed noble metal aerogels: Versatile manipulation for electrocatalysis and beyond journal May 2019

Figures / Tables (4)