Published June 2018 | Version v1
Journal article Metadata-only

Solar light response with noble metal-free highly active copper(II) phosphate/titanium dioxide nanoparticle/copper(II) oxide nanocomposites for photocatalytic hydrogen production

Creators

  • 1. Department of Chemistry, College of Natural Sciences, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk, 38541 (Korea, Republic of)
  • 2. School of Mechanical Engineering, Yeungnam University, Gyeongsan, 712-749 (Korea, Republic of)

Description

Highlights: • Cu3(PO4)2/TNP/CuO nanocomposites were prepared by sol-gel method. • Cu3(PO4)2/TNP/CuO shows enhanced visible absorption and inhibit the recombination. • Strong interaction between Cu3(PO4)2 and/or CuO nanoclusters with TNP by H2-TPR. • Synergetic effect of Cu3(PO4)2, CuO and TNP displayed effective redox reactions. • Optimum H2 yields obtained 59.5 mmol g−1, 151 times toTNP. A novel Cu3(PO4)2/TiO2 nanoparticle (TNP)/CuO nanocomposite with an excellent natural solar-light-driven photocatalytic H2 production performance was synthesized using a sol-gel method. The 1%Cu3(PO4)2/TNP/CuO catalyst displayed a better photocatalytic H2 production yield (59.5 mmolg−1; natural solar light; 151 times higher than that of TNP under the optimal conditions; catalyst dosage of 0.010 g and 5% aqueous glycerol concentration) than TNP, CuO/TNP, Cu3(PO4)2/TNP, and various Cu3(PO4)2 loadings in the Cu3(PO4)2/TNP/CuO catalysts. The improved photocatalytic H2 yields could be attributed to a suppressed recombination of charge carriers, preferable visible absorption ability, crystallinity, strong interactions, and high surface areas of 1%Cu3(PO4)2/TNP/CuO, which were confirmed using X-ray diffraction, temperature programmed reduction, diffuse reflectance spectroscopy, transmission electron microscopy (TEM), high-resolution TEM, Brunauer-Emmett-Teller surface area analysis, elemental mapping, energy dispersive X-ray analysis, X-ray photoelectron spectroscopy, electron paramagnetic resonance spectroscopy, Raman spectroscopy, photoluminescence, and photocurrent techniques. The 1%Cu3(PO4)2/TNP/CuO catalyst could also contribute to the enhanced photostability and recyclability towards the photocatalytic hydrogen production.

Availability note (English)

Available from http://dx.doi.org/10.1016/j.jallcom.2018.03.294

Additional details

Identifiers

DOI
10.1016/j.jallcom.2018.03.294;
PII
S0925838818311708;

Publishing Information

Journal Title
Journal of Alloys and Compounds
Journal Volume
750
Journal Page Range
p. 292-303
ISSN
0925-8388
CODEN
JALCEU

INIS

Country of Publication
Switzerland
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
53077695
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ABSORPTION; COPPER OXIDES; NANOCOMPOSITES; PHOSPHATES; PHOTOLUMINESCENCE; RAMAN SPECTROSCOPY; SOL-GEL PROCESS; STRONG INTERACTIONS; SURFACE AREA; TITANIUM OXIDES; TRANSMISSION ELECTRON MICROSCOPY; X RADIATION; X-RAY DIFFRACTION; X-RAY PHOTOELECTRON SPECTROSCOPY
Descriptors DEC
CHALCOGENIDES; COHERENT SCATTERING; COPPER COMPOUNDS; DIFFRACTION; ELECTROMAGNETIC RADIATION; ELECTRON MICROSCOPY; ELECTRON SPECTROSCOPY; EMISSION; FUNDAMENTAL INTERACTIONS; INTERACTIONS; IONIZING RADIATIONS; LASER SPECTROSCOPY; LUMINESCENCE; MATERIALS; MICROSCOPY; NANOMATERIALS; OXIDES; OXYGEN COMPOUNDS; PHOSPHORUS COMPOUNDS; PHOTOELECTRON SPECTROSCOPY; PHOTON EMISSION; RADIATIONS; SCATTERING; SORPTION; SPECTROSCOPY; SURFACE PROPERTIES; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS

Optional Information

Copyright
Copyright (c) 2018 Elsevier B.V. All rights reserved.