TY - JOUR

T1 - New photocatalysts based on Cd0.3Zn0.7S and Ni(OH)2 for hydrogen production from ethanol aqueous solutions under visible light

AU - Markovskaya, Dina V.

AU - Kozlova, Ekaterina A.

AU - Gerasimov, Eugeniy Yu

AU - Bukhtiyarov, Andrey V.

AU - Kozlov, Denis V.

PY - 2018/8/5

Y1 - 2018/8/5

N2 - The Cd0.3Zn0.7S photocatalysts modified by nickel hydroxide were prepared and characterized by different experimental techniques including X-ray diffraction, UV–vis spectroscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy. The obtained photocatalysts were tested in the photocatalytic hydrogen evolution from ethanol aqueous solutions under visible light irradiation (λ = 450 nm). The nickel-modified photocatalysts were found to be more active than the zinc-modified ones. The reasons of high activity of Ni-contained photocatalysts and their transformations during the photocatalytic hydrogen production were discussed. The dependences of hydrogen production rate on ethanol and NaOH concentrations were obtained, the highest value of the photocatalytic activity was 27 mmol h−1 g−1 for 1%Pt/10% Ni(OH)2/Cd0.3Zn0.7S (50% vol. ethanol, 1 M NaOH), apparent quantum efficiency exceeded 90%. A kinetic model describing the experimental data was proposed.

AB - The Cd0.3Zn0.7S photocatalysts modified by nickel hydroxide were prepared and characterized by different experimental techniques including X-ray diffraction, UV–vis spectroscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy. The obtained photocatalysts were tested in the photocatalytic hydrogen evolution from ethanol aqueous solutions under visible light irradiation (λ = 450 nm). The nickel-modified photocatalysts were found to be more active than the zinc-modified ones. The reasons of high activity of Ni-contained photocatalysts and their transformations during the photocatalytic hydrogen production were discussed. The dependences of hydrogen production rate on ethanol and NaOH concentrations were obtained, the highest value of the photocatalytic activity was 27 mmol h−1 g−1 for 1%Pt/10% Ni(OH)2/Cd0.3Zn0.7S (50% vol. ethanol, 1 M NaOH), apparent quantum efficiency exceeded 90%. A kinetic model describing the experimental data was proposed.

KW - CdZnS

KW - Ethanol

KW - Nickel hydroxide

KW - Photocatalytic hydrogen production

KW - MECHANISM

KW - COCATALYSTS

KW - CDS NANORODS

KW - SIMULATION

KW - ELECTRON-DONORS

KW - IRRADIATION

KW - EVOLUTION

KW - Cd1-xZnxS

KW - H-2 GENERATION

KW - WATER

KW - TIO2

UR - http://www.scopus.com/inward/record.url?scp=85049539096&partnerID=8YFLogxK

U2 - 10.1016/j.apcata.2018.07.002

DO - 10.1016/j.apcata.2018.07.002

M3 - Article

AN - SCOPUS:85049539096

VL - 563

SP - 170

EP - 176

JO - Applied Catalysis A: General

JF - Applied Catalysis A: General

SN - 0926-860X

ER -