title: Au/La2Ti2O7Nanostructures Sensitized with Black Phosphorus for Plasmon-Enhanced Photocatalytic Hydrogen Production in Visible and Near-Infrared Light.
abstract: Efficient utilization of solar energy is a high-priority target and the search for suitable materials as photocatalysts that not only can harvest the broad wavelength of solar light, from UV to near-infrared (NIR) region, but also can achieve high and efficient solar-to-hydrogen conversion is one of the most challenging missions. Herein, using Au/La2Ti2O7(BP-Au/LTO) sensitized with black phosphorus (BP), a broadband solar response photocatalyst was designed and used as efficient photocatalyst for H2production. The optimum H2production rates of BP-Au/LTO were about 0.74 and 0.30 mmol g-1h-1at wavelengths longer than 420 nm and 780 nm, respectively. The broad absorption of BP and plasmonic Au contribute to the enhanced photocatalytic activity in the visible and NIR light regions. Time-resolved diffuse reflectance spectroscopy revealed efficient interfacial electron transfer from excited BP and Au to LTO which is in accordance with the observed high photoactivities.
authors.affiliation: The Institute of Scientific and Industrial Research (SANKEN), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka, 567-0047, Japan.
authors.forename: Mingshan
authors.identifier: 0000-0002-5926-5383
authors.initials: M
authors.lastname: Zhu
authors.affiliation: The Institute of Scientific and Industrial Research (SANKEN), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka, 567-0047, Japan.|Department of Physics, Beihang University, Beijing, 100191, P. R. China.
authors.forename: Xiaoyan
authors.initials: X
authors.lastname: Cai
authors.affiliation: The Institute of Scientific and Industrial Research (SANKEN), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka, 567-0047, Japan.
authors.forename: Mamoru
authors.initials: M
authors.lastname: Fujitsuka
authors.affiliation: Department of Physics, Beihang University, Beijing, 100191, P. R. China.
authors.forename: Junying
authors.initials: J
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: Tetsuro
authors.identifier: 0000-0003-1805-1677
authors.initials: T
authors.lastname: Majima
keywords: black phosphorous; electron transfer; hydrogen production; photocatalysis; plasmonics