title: In Situ Observation of Single Au Triangular Nanoprism Etching to Various Shapes for Plasmonic Photocatalytic Hydrogen Generation.
abstract: In situ etching of single Au triangular nanoprism (TNP) was successfully monitored by the plasmonic photoluminescence (PL) spectra using single-particle microscopy, which provides clear results to understand the geometric and anisotropic dependence of surface plasmon resonance in Au nanostructures. Various Au nanostructures (TNP, obtuse TNP (O-TNP) and nanodisk) were obtained to synthesize anisotropic Pt-Au as plasmonic photocatalyts for hydrogen generation. Single-particle PL spectra and finite-difference time-domain simulations demonstrate that the Pt-edged Au O-TNP has larger tip area and higher plasmon enhanced electrical field for hot electron transfer and charge separation, leading to more efficient photocatalytic hydrogen generation.
authors.affiliation: The Institute of Scientific and Industrial Research (SANKEN), Osaka University , Mihogaoka 8-1, Ibaraki Osaka 567-0047, Japan.
authors.forename: Zaizhu
authors.initials: Z
authors.lastname: Lou
authors.affiliation: The Institute of Scientific and Industrial Research (SANKEN), Osaka University , Mihogaoka 8-1, Ibaraki Osaka 567-0047, Japan.
authors.forename: Sooyeon
authors.initials: S
authors.lastname: Kim
authors.affiliation: The Institute of Scientific and Industrial Research (SANKEN), Osaka University , Mihogaoka 8-1, Ibaraki Osaka 567-0047, Japan.
authors.forename: Peng
authors.initials: P
authors.lastname: Zhang
authors.affiliation: The Institute of Scientific and Industrial Research (SANKEN), Osaka University , Mihogaoka 8-1, Ibaraki Osaka 567-0047, Japan.
authors.forename: Xiaowei
authors.initials: X
authors.lastname: Shi
authors.affiliation: The Institute of Scientific and Industrial Research (SANKEN), Osaka University , Mihogaoka 8-1, Ibaraki Osaka 567-0047, Japan.
authors.forename: Mamoru
authors.identifier: 0000-0002-2336-4355
authors.initials: M
authors.lastname: Fujitsuka
authors.affiliation: The Institute of Scientific and Industrial Research (SANKEN), Osaka University , Mihogaoka 8-1, Ibaraki Osaka 567-0047, Japan.
authors.forename: Tetsuro
authors.identifier: 0000-0003-1805-1677
authors.initials: T
authors.lastname: Majima
keywords: Au triangular nanoprism; hydrogen generation; in situ reaction; plasmonic photocatalysis; single-particle spectroscopy