View : 64 Download: 0

Selectivity Modulated by Surface Ligands on Cu2O/TiO2 Catalysts for Gas-Phase Photocatalytic Reduction of Carbon Dioxide

Title
Selectivity Modulated by Surface Ligands on Cu2O/TiO2 Catalysts for Gas-Phase Photocatalytic Reduction of Carbon Dioxide
Authors
Jeong, SunilKim, Gui-MinKang, Gil-SeongKim, ChanyeonLee, HyunjooKim, Woo-JaeLee, Young KukLee, SunghoKim, HyungjunLim, Hyung KyuLee, Doh C.
Ewha Authors
김우재
Issue Date
2019
Journal Title
JOURNAL OF PHYSICAL CHEMISTRY C
ISSN
1932-7447JCR Link

1932-7455JCR Link
Citation
JOURNAL OF PHYSICAL CHEMISTRY C vol. 123, no. 48, pp. 29184 - 29191
Publisher
AMER CHEMICAL SOC
Indexed
SCI; SCIE; SCOPUS WOS scopus
Document Type
Article
Abstract
We report gas-phase photocatalytic CO2 reduction with Cu2O/TiO2 photocatalysts of varying surface passivation. With taurine adsorbed on the photocatalyst surface, the CH4 production rate increases and CO production rate decreases compared to photocatalysts with no ligand treatment. When ethylenediamine is present on Cu2O/TiO2 photocatalysts, CO selectivity enhances significantly. In situ Fourier transform infrared spectroscopy and density functional theory calculation reveal that the surface ligands on the photocatalyst surface alter the binding strength of reaction intermediates (e.g., CO) on surface atoms of the photocatalysts. Our findings cast light on a new design principle for the catalyst surface in selective CO2 conversion.
DOI
10.1021/acs.jpcc.9b05780
Appears in Collections:
엘텍공과대학 > 화학신소재공학전공 > Journal papers
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE