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Title: Gold Nanoparticles on Polymer‐Wrapped Carbon Nanotubes: An Efficient and Selective Catalyst for the Electroreduction of CO 2

Journal Article · · ChemPhysChem
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  1. Department of Chemistry and Chemical &, Biomolecular Engineering University of Illinois at Urbana Champaign 600 South Mathews Avenue Urbana IL 61801 USA, International Institute for Carbon Neutral Energy Research (WPI-I2CNER) Kyushu University 744 Moto-oka Nishi-ku Fukuoka 819-0395 Japan
  2. Department of Chemistry and Chemical &, Biomolecular Engineering University of Illinois at Urbana Champaign 600 South Mathews Avenue Urbana IL 61801 USA
  3. International Institute for Carbon Neutral Energy Research (WPI-I2CNER) Kyushu University 744 Moto-oka Nishi-ku Fukuoka 819-0395 Japan, Department of Applied Chemistry Kyushu University 744 Moto-oka Nishi-ku Fukuoka 819-0395 Japan

Abstract Multiple approaches will be needed to reduce the atmospheric CO 2 levels, which have been linked to the undesirable effects of global climate change. The electroreduction of CO 2 driven by renewable energy is one approach to reduce CO 2 emissions while producing chemical building blocks, but current electrocatalysts exhibit low activity and selectivity. Here, we report the structural and electrochemical characterization of a promising catalyst for the electroreduction of CO 2 to CO: Au nanoparticles supported on polymer‐wrapped multiwall carbon nanotubes. This catalyst exhibits high selectivity for CO over H 2 : 80–92 % CO, as well as high activity: partial current density for CO as high as 160 mA cm −2 . The observed high activity, originating from a high electrochemically active surface area (23 m 2  g −1 Au), in combination with the low loading (0.17 mg cm −2 ) of the highly dispersed Au nanoparticles underscores the promise of this catalyst for efficient electroreduction of CO 2 .

Sponsoring Organization:
USDOE
Grant/Contract Number:
FG02005ER46260, DE-SC0004453
OSTI ID:
1399798
Journal Information:
ChemPhysChem, Journal Name: ChemPhysChem Vol. 18 Journal Issue: 22; ISSN 1439-4235
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English
Citation Metrics:
Cited by: 48 works
Citation information provided by
Web of Science

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