Premium
Bromine‐Induced Defects in Anion‐Deficient Zinc Oxide as Stable Photocatalysis Promoters
Author(s) -
Meethal Bhabhiinnora,
Swaminathan Sindhu
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.201802795
Subject(s) - photocatalysis , bromine , zinc , raman spectroscopy , x ray photoelectron spectroscopy , materials science , inorganic chemistry , oxide , doping , catalysis , nuclear chemistry , photochemistry , chemistry , chemical engineering , organic chemistry , metallurgy , physics , optoelectronics , optics , engineering
The physico‐chemical properties and photocatalytic performance stability of bromine doped zinc oxide is compared with that of undoped zinc oxide system. Interstitially located bromine induced defects turning to photocatalytic promoter is a rarely studied, but relevant area. Here, high yield one‐pot synthesis with cost‐effective and straightforward method is adopted for the synthesis. A detailed study on the physico‐chemical properties of the prepared photocatalyst materials is done following advanced methodologies. Surface modification of anion deficient zinc oxide in presence of bromine is confirmed from X‐ray photoelectron spectroscopy and Raman spectroscopy. This study highlights the synergetic effect attained through Br induced defects with anion deficiencies in ZnO by fine tuning the level of doping. Plausible photocatalytic mechanism for water purification employing efficient electron‐hole separation due to interstitially located bromine and anion deficiency in ZnO is proposed. Bromine doped ZnO photocatalyst showed complete degradation of methylene blue (20 ppm) within a short period of time compared to pristine ZnO.