期刊
MATERIALS LETTERS
卷 303, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.matlet.2021.130495
关键词
Quantum dots; Methylene blue; Dye removal; Filtration; Water treatment
资金
- UJ-Global Excellence Stature, National Research Foundation (N.R.F) [129290]
- University of Johannesburg (URC) and Faculty of Science (FRC)
A novel method using water-soluble AIS-ZnS QDs as coagulant material for instant removal of methylene blue from aqueous solution with efficiency up to 99.3% was reported. The method is simple and efficient, providing a new approach for addressing water contamination issues caused by dye and colourant industries.
Contamination of water sources by dye and colourant industries has been a serious issue that could lead to a water crisis. Herein, we report a novel method for instant removal of methylene blue (MB) from the aqueous solution using water-soluble AgInS2-ZnS (AIS-ZnS) quantum dots (QDs) as coagulant material. Briefly, AIS-ZnS QDs were synthesized in an aqueous medium using glutathione and sodium citrate as dual stabilizing agents. The as-synthesized AIS-ZnS QDs was simply mixed with MB solution and immediately filtered with a 20 nm filter to obtain clear water with very low conductivity. The removal of MB by coagulation with AIS-ZnS QDs followed by filtration was efficiently high up to 99.3%. This result shows AIS-ZnS QDs as an excellent candidate for the rapid removal of dyes.
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