Pd Nanoparticles Coupled to WO2.72 Nanorods for Enhanced Electrochemical Oxidation of Formic Acid
- Brown Univ., Providence, RI (United States)
- Dalhousie Univ., Halifax, NS (Canada)
- Huazhong Univ. of Science and Technology, Wuhan (People’s Republic of China)
In this work, we synthesize a new type of hybrid Pd/WO2.72 structure with 5 nm Pd nanoparticles (NPs) anchored on 50 × 5 nm WO2.72 nanorods. The strong Pd/WO2.72 coupling results in the lattice expansion of Pd from 0.23 to 0.27 nm and the decrease of Pd surface electron density. As a result, the Pd/WO2.72 shows much enhanced catalysis toward electrochemical oxidation of formic acid in 0.1 M HClO4; it has a mass activity of ~1600 mA/mgPd in a broad potential range of 0.4–0.85 V (vs RHE) and shows no obvious activity loss after a 12 h chronoamperometry test at 0.4 V. Our work demonstrates an important strategy to enhance Pd NP catalyst efficiency for energy conversion reactions.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
- Sponsoring Organization:
- US Army Research Laboratory (USARL); US Army Research Office (ARO); Natural Sciences and Engineering Research Council of Canada (NSERC); USDOE; Canadian Institutes of Health Research (CIHR); National Research Council Canada (NRC); National Science Foundation (NSF)
- Grant/Contract Number:
- W911NF-15-1-0147; AC02-06CH11357; 1644760
- OSTI ID:
- 1372233
- Journal Information:
- Nano Letters, Vol. 17, Issue 4; ISSN 1530-6984
- Publisher:
- American Chemical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- ENGLISH
Cited by: 123 works
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