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Title: Pd Nanoparticles Coupled to WO 2.72 Nanorods for Enhanced Electrochemical Oxidation of Formic Acid

Abstract

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.

Authors:
ORCiD logo; ; ; ; ; ; ORCiD logo; ; ORCiD logo
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
U.S. ARMY RESEARCHFOREIGN
OSTI Identifier:
1372233
Resource Type:
Journal Article
Resource Relation:
Journal Name: Nano Letters; Journal Volume: 17; Journal Issue: 4
Country of Publication:
United States
Language:
ENGLISH
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE

Citation Formats

Xi, Zheng, Erdosy, Daniel P., Mendoza-Garcia, Adriana, Duchesne, Paul N., Li, Junrui, Muzzio, Michelle, Li, Qing, Zhang, Peng, and Sun, Shouheng. Pd Nanoparticles Coupled to WO 2.72 Nanorods for Enhanced Electrochemical Oxidation of Formic Acid. United States: N. p., 2017. Web. doi:10.1021/acs.nanolett.7b00870.
Xi, Zheng, Erdosy, Daniel P., Mendoza-Garcia, Adriana, Duchesne, Paul N., Li, Junrui, Muzzio, Michelle, Li, Qing, Zhang, Peng, & Sun, Shouheng. Pd Nanoparticles Coupled to WO 2.72 Nanorods for Enhanced Electrochemical Oxidation of Formic Acid. United States. doi:10.1021/acs.nanolett.7b00870.
Xi, Zheng, Erdosy, Daniel P., Mendoza-Garcia, Adriana, Duchesne, Paul N., Li, Junrui, Muzzio, Michelle, Li, Qing, Zhang, Peng, and Sun, Shouheng. Thu . "Pd Nanoparticles Coupled to WO 2.72 Nanorods for Enhanced Electrochemical Oxidation of Formic Acid". United States. doi:10.1021/acs.nanolett.7b00870.
@article{osti_1372233,
title = {Pd Nanoparticles Coupled to WO 2.72 Nanorods for Enhanced Electrochemical Oxidation of Formic Acid},
author = {Xi, Zheng and Erdosy, Daniel P. and Mendoza-Garcia, Adriana and Duchesne, Paul N. and Li, Junrui and Muzzio, Michelle and Li, Qing and Zhang, Peng and Sun, Shouheng},
abstractNote = {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.},
doi = {10.1021/acs.nanolett.7b00870},
journal = {Nano Letters},
number = 4,
volume = 17,
place = {United States},
year = {Thu Mar 02 00:00:00 EST 2017},
month = {Thu Mar 02 00:00:00 EST 2017}
}