title: Edgeless Ag-Pt Bimetallic Nanocages: In Situ Monitor Plasmon-Induced Suppression of Hydrogen Peroxide Formation.
abstract: Improvements in the performance of electrocatalysts, along with continuing advances in selective pathway for target reaction, have great potential to offer opportunities in designing competitive reactions especially for using a photophysical process owing to its tunable properties. Herein, we demonstrated a first empirical evidence of suppressing the formation of undesired peroxide intermediate through plasmonic effects, in which plasmonic Ag-Pt bimetallic nanocages were synthesized with an edgeless feature, and a custom-made RDE/RRDE working station was designed to provide unique means by which to in situ realize the plasmon-induced effects toward the target reaction. The edgeless Ag-Pt bimetallic nanocages with hollow interior performed newly plasmon-induced effects, which was characteristic of photodependent nature to suppress the formation of undesired peroxide intermediate. We concluded that the plasmon-induced hot electron transfer governed the suppression of peroxide formation instead of plasmon-induced heating that would cause a negative effect (i.e., increase of peroxide yield), in which the hot electron transfer of Ag nanostructure offered a sufficient energy to populate the antibonding orbital of O2as illustrated by in situ X-ray absorption approach. This rapid light-dependent nature corresponding to localized surface plasmon resonance in present nanocages can potentially offer synergetic strategies toward altering the chemical reactions or reaction pathways in various fields.
authors.affiliation: Department of Chemistry, National Taiwan University , Taipei 106, Taiwan.
authors.forename: Sheng-Chih
authors.initials: SC
authors.lastname: Lin
authors.affiliation: Department of Chemistry, National Taiwan University , Taipei 106, Taiwan.
authors.forename: Chia-Shuo
authors.initials: CS
authors.lastname: Hsu
authors.affiliation: Department of Chemistry, National Taiwan University , Taipei 106, Taiwan.
authors.forename: Shih-Yun
authors.initials: SY
authors.lastname: Chiu
authors.affiliation: Department of Chemistry, National Taiwan University , Taipei 106, Taiwan.
authors.forename: Tzu-Yu
authors.initials: TY
authors.lastname: Liao
authors.affiliation: Department of Chemistry, National Taiwan University , Taipei 106, Taiwan.
authors.forename: Hao Ming
authors.identifier: 0000-0002-7480-9940
authors.initials: HM
authors.lastname: Chen