Highly Strained Au Nanoparticles for Improved Electrocatalysis of Ethanol Oxidation Reaction

The Journal of Physical Chemistry Letters
Xun CaoYizhong Huang

Abstract

Au is an ideal noble metal as an electrocatalyst for ethanol oxidation reaction owing to its high performance-to-cost ratio. The catalyst usually exists as nanoparticles (NPs) for high surface area to volume ratio. In the present paper, a non-traditional physical approach has been developed to fabricate ultra-small and homogeneous single crystalline Au NPs by ion bombardment in a PIPS system. TEM characterizations show that the Au NPs produced with 5 keV Ar+ are highly strained to form twinned crystals, which accumulate large amount of surface energy, and this was found to be an underlying reason causing strong catalysis. Electrochemistry tests reveal that in alkaline medium, C1 pathway occurs much more preferentially with the strained Au NPs than the normal Au NPs. Surface area to volume ratio is no longer the only factor that affects the performance; instead, surface energy might play a more important role in enhancing the catalytic activities.

References

Oct 4, 2003·Physical Review Letters·K K NandaS Stappert
Oct 21, 2005·Nature·Masatake Haruta
Feb 14, 2006·The Journal of Physical Chemistry. B·Zhangquan PengKarl Kleinermanns
Jul 21, 2006·The Journal of Physical Chemistry. B·Haichao Liu, Enrique Iglesia
Sep 3, 2008·Chemical Society Reviews·Marek GrzelczakLuis M Liz-Marzán
Jun 8, 2010·Chemical Communications : Chem Comm·Yang-Hee LeeYoung-Uk Kwon
Nov 26, 2010·Physical Chemistry Chemical Physics : PCCP·Thomas A BakerCynthia M Friend
Feb 23, 2012·Nature Chemistry·Paramaconi RodriguezMarc T M Koper
Apr 15, 2014·Physical Chemistry Chemical Physics : PCCP·Paramaconi Rodriguez, Marc T M Koper
Jun 20, 2015·Nature Communications·Hong LiXiaolin Zheng

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Citations

Feb 20, 2021·The Journal of Physical Chemistry Letters·Zheng WangYizhong Huang
Jun 9, 2021·Chemical Society Reviews·Hang YinZongyou Yin

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