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Visible‐Light‐Enhanced Photocatalytic Activity of Totally Inorganic Halide‐Based Perovskite
Author(s) -
ReyesPérez Fran,
Gallardo Juan Jesús,
Aguilar Teresa,
Alcántara Rodrigo,
FernándezLorenzo Concha,
Navas Javier
Publication year - 2018
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201801564
Subject(s) - photocatalysis , x ray photoelectron spectroscopy , perovskite (structure) , materials science , tetragonal crystal system , adsorption , raman spectroscopy , visible spectrum , halide , tin oxide , stoichiometry , spectroscopy , photochemistry , inorganic chemistry , oxide , chemical engineering , crystal structure , chemistry , catalysis , crystallography , optics , organic chemistry , metallurgy , optoelectronics , engineering , physics , quantum mechanics
The removal of contaminants is an interesting topic in environmental research and for society nowadays. In this sense, perovskite materials have proven to be amazing photocatalysts. In this study, CsSnBr 3 perovskite was synthesized and characterized using techniques such as x‐ray diffraction, Raman spectroscopy, x‐ray photoelectron spectroscopy and UV‐vis spectroscopy. A mixture of cubic and tetragonal crystalline phases was found in the sample, and XPS revealed the presence of two oxidation states for Sn, and the formation of surface non‐stoichiometric tin oxide. A good light harvesting in the visible range of the electromagnetic spectrum was also found for the perovskite synthesized, which is also insoluble in water. Furthermore, adsorption and photocatalytic tests were performed. Degradation of crystal violet dye was found after the adsorption tests, but the adsorption rate affected the photocatalytic process. Therefore, CsSnBr 3 shows a good photocatalytic activity for degrading dyes and contaminants.