Publication
Title
In situ synthesis of nanoparticles on ZincMe (Me = Al or Cr) layered double hydroxide frameworks for photocatalytic oxygen evolution from water under solar-light activation
Author
Abstract
A key target to boost solar-to-chemical conversion processes is to fabricate an efficient solar-light-responsive photocatalyst. Herein, we report the insitu synthesis of nanoparticles (NPs) of Bi2O3 directly on Zn-based layered double hydroxide (LDHs) frameworks. The insitu synthesis of Bi(2)O(3)NPs is done at room temperature, is ligand free and explores the ability of calcined ZnMeLDHs to reconstruct their layered structures in Bi(NO3)(3) aqueous solution. The insitu formation of Bi(2)O(3)NPs on ZnMeLDHs is assessed by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), powder X-ray diffraction (XRD), and UV/Vis spectroscopy and compared with the features of a corresponding Bi(2)O(3)NPs/LDH prepared by the conventional impregnation route. The rapid photocatalytic response of the Bi(2)O(3)NPs/ZnMeLDH (Me = Al, Cr) heterostructures is confirmed by O-2 generation from water under solar-light irradiation. The rate of O-2 generation increases by a factor of approximately 2 for the ZnCrLDH based catalysts as compared to that of the family of ZnAlLDH catalysts. Further, the presence of the bismuth phase and its nano-dimension leads to increased efficiency for the insitu prepared Bi(2)O(3)NPs/LDHs as compared to that of impregnated Bi2O3/LDH and the pristine LDHs.
Language
English
Source (journal)
ChemCatChem. - -
Publication
2018
ISSN
1867-3880 [print]
1867-3899 [online]
Volume/pages
10 :7 (2018) , p. 1598-1606
ISI
000430102400016
Full text (Publisher's DOI)
UAntwerpen
Faculty/Department
Research group
Project info
Development of highly active nanostructured titaniabased photocatalysts for wastewater remediation and CO2 conversion into valuable chemicals.
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 04.05.2018
Last edited 14.09.2021
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