Jeong, Sunil Kim, Gui-Min Kang, Gil-Seong Kim, Chanyeon Lee, Hyunjoo Kim, Woo-Jae Lee, Young Kuk Lee, Sungho Kim, Hyungjun Lim, Hyung Kyu Lee, Doh C. 2024-01-19T18:32:47Z 2024-01-19T18:32:47Z 2021-09-05 2019-12-05 1932-7447 https://pubs.kist.re.kr/handle/201004/119214 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. English American Chemical Society CO2 PHOTOREDUCTION VISIBLE-LIGHT CONVERSION TIO2 CU NANOPARTICLES NANOCRYSTALS ADSORPTION H2O AU Selectivity Modulated by Surface Ligands on Cu2O/TiO2 Catalysts for Gas-Phase Photocatalytic Reduction of Carbon Dioxide Article 10.1021/acs.jpcc.9b05780 1 The Journal of Physical Chemistry C, v.123, no.48, pp.29184 - 29191 The Journal of Physical Chemistry C 123 48 29184 29191 scie scopus 000501623100012 2-s2.0-85075670142 Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Science & Technology - Other Topics Materials Science Article CO2 PHOTOREDUCTION VISIBLE-LIGHT CONVERSION TIO2 CU NANOPARTICLES NANOCRYSTALS ADSORPTION H2O AU