title: Well-Defined Nanographene-Rhenium Complex as an Efficient Electrocatalyst and Photocatalyst for Selective CO2Reduction.
abstract: Improving energy efficiency of electrocatalytic and photocatalytic CO2conversion to useful chemicals poses a significant scientific challenge. We report on using a colloidal nanographene to form a molecular complex with a metal ion to tackle this challenge. In this work, a well-defined nanographene-Re complex was synthesized, in which electron delocalization over the nanographene and the metal ion significantly decreases the electrical potential needed to drive the chemical reduction. We show the complex can selectively electrocatalyze CO2reduction to CO in tetrahydrofuran at -0.48 V vs NHE, the least negative potential reported for a molecular catalyst. In addition, the complex can absorb a significant spectrum of visible light to photocatalyze the chemical transformation without the need for a photosensitizer.
authors.affiliation: Department of Chemistry, Indiana University , Bloomington, Indiana 47405, United States.
authors.forename: Xiaoxiao
authors.identifier: 0000-0001-7053-8162
authors.initials: X
authors.lastname: Qiao
authors.affiliation: Department of Chemistry, Indiana University , Bloomington, Indiana 47405, United States.
authors.forename: Qiqi
authors.initials: Q
authors.lastname: Li
authors.affiliation: Department of Chemistry, Indiana University , Bloomington, Indiana 47405, United States.
authors.forename: Richard N
authors.initials: RN
authors.lastname: Schaugaard
authors.affiliation: Department of Chemistry, Indiana University , Bloomington, Indiana 47405, United States.
authors.forename: Benjamin W
authors.initials: BW
authors.lastname: Noffke
authors.affiliation: Department of Chemistry, Indiana University , Bloomington, Indiana 47405, United States.
authors.forename: Yijun
authors.identifier: 0000-0001-9227-6781
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Department of Chemistry, Indiana University , Bloomington, Indiana 47405, United States.
authors.forename: Dongping
authors.initials: D
authors.lastname: Li
authors.affiliation: Department of Chemistry, Indiana University , Bloomington, Indiana 47405, United States.
authors.forename: Lu
authors.initials: L
authors.lastname: Liu
authors.affiliation: Department of Chemistry, Indiana University , Bloomington, Indiana 47405, United States.
authors.forename: Krishnan
authors.identifier: 0000-0003-3275-1426
authors.initials: K
authors.lastname: Raghavachari
authors.affiliation: Department of Chemistry, Indiana University , Bloomington, Indiana 47405, United States.
authors.forename: Liang-Shi
authors.identifier: 0000-0001-7566-8492
authors.initials: LS
authors.lastname: Li