TY - JOUR

T1 - The influence of the sacrificial agent nature on transformations of the Zn(OH)2/Cd0.3Zn0.7S photocatalyst during hydrogen production under visible light

AU - Markovskaya, Dina V.

AU - Cherepanova, Svetlana V.

AU - Gerasimov, Evgeny Yu

AU - Zhurenok, Angelina V.

AU - Selivanova, Aleksandra V.

AU - Selishchev, Dmitry S.

AU - Kozlova, Ekaterina A.

PY - 2020/1/8

Y1 - 2020/1/8

N2 - Photocatalysts based on zinc hydroxide and a solid solution of CdS and ZnS were prepared via the precipitation method and used for photocatalytic hydrogen production from aqueous solutions of inorganic (Na2S/Na2SO3) and organic (ethanol) sacrificial agents. The photocatalysts were tested in cyclic experiments for hydrogen evolution and studied using X-ray diffraction (XRD), UV-Vis diffuse reflectance spectroscopy, high-resolution transmission electron microscopy (HRTEM), energy-dispersive X-ray spectroscopy (EDX), and X-ray photoelectron spectroscopy (XPS) techniques. Different transformations of the β-Zn(OH)2 co-catalyst were observed in the presence of inorganic and organic sacrificial agents; namely, ZnS was formed in Na2S/Na2SO3 solution, whereas the formation of ϵ-Zn(OH)2 was detected in solution with ethanol. The composite Zn(OH)2/Cd1-xZnxS photocatalysts have great potential in various photocatalysis processes (e.g., hydrogen production, CO2 reduction, and the oxidation of organic contaminants) under visible light.

AB - Photocatalysts based on zinc hydroxide and a solid solution of CdS and ZnS were prepared via the precipitation method and used for photocatalytic hydrogen production from aqueous solutions of inorganic (Na2S/Na2SO3) and organic (ethanol) sacrificial agents. The photocatalysts were tested in cyclic experiments for hydrogen evolution and studied using X-ray diffraction (XRD), UV-Vis diffuse reflectance spectroscopy, high-resolution transmission electron microscopy (HRTEM), energy-dispersive X-ray spectroscopy (EDX), and X-ray photoelectron spectroscopy (XPS) techniques. Different transformations of the β-Zn(OH)2 co-catalyst were observed in the presence of inorganic and organic sacrificial agents; namely, ZnS was formed in Na2S/Na2SO3 solution, whereas the formation of ϵ-Zn(OH)2 was detected in solution with ethanol. The composite Zn(OH)2/Cd1-xZnxS photocatalysts have great potential in various photocatalysis processes (e.g., hydrogen production, CO2 reduction, and the oxidation of organic contaminants) under visible light.

KW - AQUEOUS-SOLUTIONS

KW - H-2 EVOLUTION

KW - CDS

KW - SEMICONDUCTOR

KW - COCATALYST

KW - COMPOSITE

KW - NANORODS

UR - http://www.scopus.com/inward/record.url?scp=85077971827&partnerID=8YFLogxK

U2 - 10.1039/c9ra08833d

DO - 10.1039/c9ra08833d

M3 - Article

C2 - 35494672

AN - SCOPUS:85077971827

VL - 10

SP - 1341

EP - 1350

JO - RSC Advances

JF - RSC Advances

SN - 2046-2069

IS - 3

ER -