title: CuI as Hole-Transport Channel for Enhancing Photoelectrocatalytic Activity by Constructing CuI/BiOI Heterojunction.
abstract: In this paper, CuI, as a typical hole-transport channel, was used to construct a high-performance visible-light-driven CuI/BiOI heterostructure for photoelectrocatalytic applications. The heterostructure combines the broad visible absorption of BiOI and high hole mobility of CuI. Compared to pure BiOI, the CuI/BiOI heterostructure exhibited distinctly enhanced photoelectrocatalytic performance for the oxidation of methanol and organic pollutants under visible-light irradiation. The photogenerated electron-hole pairs of the excited BiOI can be separated efficiently through CuI, in which the CuI acts as a superior hole-transport channel to improve photoelectrocatalytic oxidization of methanol and organic pollutants. The outstanding photoelectrocatalytic activity shows that the p-type CuI works as a promising hole-transport channel to improve the photocatalytic performance of traditional semiconductors.
authors.affiliation: School of Materials Science and Chemical Engineering, Ningbo University , Ningbo 315211, China.
authors.forename: Mingjuan
authors.initials: M
authors.lastname: Sun
authors.affiliation: School of Materials Science and Chemical Engineering, Ningbo University , Ningbo 315211, China.
authors.forename: Jiayue
authors.initials: J
authors.lastname: Hu
authors.affiliation: School of Materials Science and Chemical Engineering, Ningbo University , Ningbo 315211, China.
authors.forename: Chunyang
authors.initials: C
authors.lastname: Zhai
authors.affiliation: School of Materials Science and Chemical Engineering, Ningbo University , Ningbo 315211, China.
authors.forename: Mingshan
authors.identifier: http://orcid.org/0000-0002-5926-5383
authors.initials: M
authors.lastname: Zhu
authors.affiliation: School of Materials Science and Chemical Engineering, Ningbo University , Ningbo 315211, China.
authors.forename: Jianguo
authors.initials: J
authors.lastname: Pan
keywords: bismuth oxyiodide; copper iodide; hole transport; photoelectrocatalyst; visible light