z-logo
Premium
Visible light active heterostructured photocatalyst system based on CuO plate‐like particles and SnO 2 nanofibers
Author(s) -
Dursun Sami,
Kaya İsmail C.,
Kocabaş Mustafa,
Akyildiz Hasan,
Kalem Volkan
Publication year - 2020
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.13467
Subject(s) - photocatalysis , materials science , heterojunction , hydrothermal circulation , visible spectrum , chemical engineering , decomposition , nanofiber , methylene blue , degradation (telecommunications) , electrospinning , nanotechnology , composite material , catalysis , optoelectronics , chemistry , telecommunications , biochemistry , polymer , organic chemistry , computer science , engineering
In this study, CuO–SnO 2 p‐n type heterostructures were produced and tested for the degradation of methylene blue and 4‐nitrophenol under visible light irradiation. CuO particles were produced in plate‐like morphology using hydrothermal synthesis. SnO 2 nanofibers were obtained by electrospinning. Structural, morphological, optical and semiconducting property characterization of heterostructured CuO–SnO 2 and individual phases were performed. The photocatalytic activity was found to change depending on the amount of CuO particles in heterostructured samples. Among others, the sample with 0.35 wt.% CuO–SnO 2 showed the highest photocatalytic efficiency with a degradation rate constant ~2 h −1 . Active specie scavenger tests revealed that the decomposition reaction occurs through direct oxidation mechanism by the holes in the valence band of SnO 2 in pure samples whereas in CuO–SnO 2 samples∙ O 2 -and∙ OH radicals also form and involve in the reactions. Further, the photocatalytic degradation mechanism was revealed using relative band potentials and p‐n junctions of the heterostructured photocatalyst.

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here