Omnidirectional Au nanoparticle-embedded ZnO/CdS core/shell heterostructures were fabricated on ITO substrates for photoelectrochemical water-splitting photoelectrodes by combining electrospinning, hydrothermal treatment, photoreduction and chemical bath deposition. The obtained omnidirectional heterostructures harvested solar light efficiently, provided good electrical conductivity, and enhanced the charge transfer between CdS and ZnO that eventually enhanced photoconversion efficiency.
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http://dx.doi.org/10.1039/c9cc09559d | DOI Listing |
Nanomaterials (Basel)
January 2021
State Key Laboratory of Superhard Materials, Jilin University, Qianjin Street 2699, Changchun 130012, China.
Herein, a novel actinomorphic flower-like ZnO/Au/CdS nanorods ternary composite photocatalyst is prepared to extend the light-responsive range, reduce the photogenerated charge carriers recombination, and ultimately improve the water splitting performance. Flower-like ZnO nanorods are synthesized by a chemical bath method and the CdS nanoparticles are sensitized by successive ionic layer adsorption and reaction method. Then the Au nanoparticles as co-catalysts are introduced by the photodeposition method to modify the interface of ZnO/CdS for reducing the photogenerated electron recombination rate and further improving the performance of water splitting.
View Article and Find Full Text PDFChem Commun (Camb)
April 2020
Department of Physics and Materials Science, Faculty of Natural Sciences, Quy Nhon University, 170 An Duong Vuong, Quy Nhon City 590000, Vietnam.
Omnidirectional Au nanoparticle-embedded ZnO/CdS core/shell heterostructures were fabricated on ITO substrates for photoelectrochemical water-splitting photoelectrodes by combining electrospinning, hydrothermal treatment, photoreduction and chemical bath deposition. The obtained omnidirectional heterostructures harvested solar light efficiently, provided good electrical conductivity, and enhanced the charge transfer between CdS and ZnO that eventually enhanced photoconversion efficiency.
View Article and Find Full Text PDFACS Appl Mater Interfaces
October 2018
State Key Laboratory of Bioelectronics, School of Biological Sciences & Medical Engineering , Southeast University, Nanjing 210096 , P. R. China.
Constructing heterostructured nanomaterials with integrating different functional materials into well-oriented nanoarchitectures is an efficacious tactic to obtain high-performance photocatalysts. In this paper, we fabricated three-dimensional ZnO-WS@CdS core-shell nanorod arrays as visible-light-driven photocatalysts for efficient photocatalytic H production. This unique core-shell heterostructure extends visible-light absorption and provides more active sites.
View Article and Find Full Text PDFMaterials (Basel)
December 2016
Institute of Materials Engineering, National Taiwan Ocean University, Keelung 20224, Taiwan.
The ZnO-CdS core-shell composite nanorods with CdS shell layer thicknesses of 5 and 20 nm were synthesized by combining the hydrothermal growth of ZnO nanorods with the sputtering thin-film deposition of CdS crystallites. The microstructures and optical properties of the ZnO-CdS nanorods were associated with the CdS shell layer thickness. A thicker CdS shell layer resulted in a rougher surface morphology, more crystal defects, and a broader optical absorbance edge in the ZnO-CdS rods.
View Article and Find Full Text PDFPhys Chem Chem Phys
November 2016
Centre for Nanoscience and Technology, Anna University, Chennai - 600 025, India.
An optical-fiber based evanescent ammonia vapor sensor was constructed with surface-passivated growth of zinc oxide (ZnO) nanostructures, which was achieved through a three-step wet chemical process. Initially, the ZnO nanostructures were synthesized using a wet-chemical method and subsequently surface-passivated with chalcogenide material compounds namely cadmium sulphide (CdS) and cadmium selenide (CdSe) nanoparticles individually using a citric acid assisted chemical synthesis technique. Finally, surface-passivated ZnO was deposited on the cladding modified optical-fiber using a dip coating process.
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