title: Photoelectrochemical CO2 Reduction by a Molecular Cobalt(II) Catalyst on Planar and Nanostructured Si Surfaces.
abstract: In the presence of a molecular Co(II) catalyst, CO2 reduction occurred at much less negative potentials on Si photoelectrodes than on an Au electrode. The addition of 1 % H2 O significantly improved the performance of the Co(II) catalyst. Photovoltages of 580 and 320 mV were obtained on Si nanowires and a planar Si photoelectrode, respectively. This difference likely originated from the fact that the multifaceted Si nanowires are better in light harvesting and charge transfer than the planar Si surface.
authors.affiliation: Department of Chemistry, Boston College, Chestnut Hill, MA, 02467, USA.
authors.forename: Da
authors.initials: D
authors.lastname: He
authors.affiliation: Department of Chemistry, University of New Hampshire, Durham, NH, 03824, USA.
authors.forename: Tong
authors.initials: T
authors.lastname: Jin
authors.affiliation: Department of Chemistry, Boston College, Chestnut Hill, MA, 02467, USA.
authors.forename: Wei
authors.initials: W
authors.lastname: Li
authors.affiliation: Department of Chemistry, University of New Hampshire, Durham, NH, 03824, USA.
authors.forename: Sebastian
authors.initials: S
authors.lastname: Pantovich
authors.affiliation: Department of Chemistry, Boston College, Chestnut Hill, MA, 02467, USA. dunwei.wang@bc.edu.
authors.forename: Dunwei
authors.initials: D
authors.lastname: Wang
authors.affiliation: Department of Chemistry, University of New Hampshire, Durham, NH, 03824, USA. gonghu.li@unh.edu.
authors.forename: Gonghu
authors.initials: G
authors.lastname: Li
keywords: molecular catalysts; nanostructures; photoelectrochemistry; silicon; solar fuels