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Light‐Regenerative Gray ZnO as a Fast and Selective Adsorbent for Dye Removal
Author(s) -
ZuoJiang Sizhi,
Ma Ji,
Wang Yunguo,
Chen Kezheng
Publication year - 2017
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201702026
Subject(s) - adsorption , physisorption , aqueous solution , selectivity , chemical engineering , selective adsorption , chemistry , urea , photochemistry , irradiation , materials science , organic chemistry , catalysis , engineering , physics , nuclear physics
Gray ZnO adsorbent was synthesized via a facile urea‐assisted solvothermal procedure. Its positive surface charge is conducive to the electrostatic attraction with anionic dyes in aqueous solution. Based on equilibrium and thermodynamic studies, the dye adsorption mechanism on this adsorbent is mainly taken as physisorption. After adsorption, it could be effectively regenerated via sunlight and ultraviolet‐light irradiation. Its remarkable dye adsorption capacity, high selectivity and excellent regeneration efficiency are highly desirable in water treatment.