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Effect of atomic-layer-deposited TiO2 on carbon-supported Ni catalysts for electrocatalytic glycerol oxidation in alkaline media
- Authors
- Han, Jisu; Kim, Youngmin; Kim, Hyun Woo; Jackson, David H. K.; Lee, Daewon; Chang, Hyunju; Chae, Ho-Jeong; Lee, Kwan-Young; Kim, Hyung Ju
- Issue Date
- 10월-2017
- Publisher
- ELSEVIER SCIENCE INC
- Keywords
- Nickel; Titanium dioxide; Atomic layer deposition; Electrocatalytic oxidation; Glycerol; Alkaline electrolyte
- Citation
- ELECTROCHEMISTRY COMMUNICATIONS, v.83, pp.46 - 50
- Indexed
- SCIE
SCOPUS
- Journal Title
- ELECTROCHEMISTRY COMMUNICATIONS
- Volume
- 83
- Start Page
- 46
- End Page
- 50
- ISSN
- 1388-2481
- Abstract
- Thin TiO2 layers were deposited onto a carbon-supported Ni catalyst (Ni/C) through atomic layer deposition (ALD) and the resulting TiO2-coated Ni/C (ALD(TiO2)-Ni/C) was utilized for electrochemical glycerol oxidation in alkaline media. X-ray photoelectron spectroscopy analysis demonstrated that the Ni surface phase of ALD (TiO2)-Ni/C mainly consisted of Ni(OH)(2) while that of uncoated Ni/C was a mixed phase of NiO and Ni(OH)(2). The ALD(TiO2)-Ni/C exhibited electrocatalytic activity at least 2.4 times higher than that of Ni/C. Density functional theory calculations were used to investigate how the modified Ni surface with the TiO2 coating affects the adsorption/desorption of glycerol.
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