Chiang Mai University; Chiang Mai University; Chiang Mai University; National Science & Technology Development Agency - Thailand; National Electronics & Computer Technology Center (NECTEC); Chiang Mai University
Type
Article
Source Title
SCIENTIFIC REPORTS
ISSN
2045-2322
Year
2022
Volume
12
Issue
1
Page
-
Open Access
gold, Green Published
Publisher
NATURE PORTFOLIO
DOI
10.1038/s41598-022-08244-7
Format
PDF
Abstract
Copper-iron (Cu-Fe) oxide composite films were successfully deposited on quartz substrate by a facile sparking process. The nanoparticles were deposited on the substrate after sparking off the Fe and Cu tips with different ratios and were then annealed at different temperatures. The network particles were observed after annealing the film at 700 degrees C. Meanwhile, XRD, XPS and SAED patterns of the annealed films at 700 degrees C consisted of a mixed phase of CuO, gamma-Fe2O3, CuFe2O4 and CuFe2O. The film with the lowest energy band gap (E-g) of 2.56 eV was observed after annealing at 700 degrees C. Interestingly, the optimum ratio and annealing temperature show the photocatalytic activity under visible light higher than 20% and 30% compare with the annealed TiO2 at 500 and 700 degrees C, respectively. This is a novel photocatalyst which can be replaced TiO2 for photocatalytic applications in the future.
Funding Sponsor
Thailand Graduate Institute of Science and Technology (TGIST) [SCA-CO-2560-4484-TH, TG-44-10-60-023D]; National Science and Technology Development Agency (NSTDA); Graduate School Department of Physics and Materials Science, Faculty of Science, Chiang Mai University (GSCMU); Chiang Mai University
