Fast and efficient degradation of water pollutant dyes and fungicide by novel sulfur-doped graphene oxide-modified Ag 3 PO 4 nanocomposite

The sulfur-doped graphene oxide (sGO)-integrated Ag PO composite displayed very high catalytic activity toward prominent water pollutants like textile dyes and fungicide under sunlight. The optimum amount of sGO doping was found as 5% for degradation. The novel composite degraded 99% of methylene bl...

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Bibliographic Details
Published in:Environmental science and pollution research international 2021-04, Vol.28 (16), p.20247
Main Authors: Priyanka, Ragam N, Abraham, Thomas, Joseph, Subi, George, Jaise Mariya, Plathanam, Neena J, Mathew, Beena
Format: Article
Language:English
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Summary:The sulfur-doped graphene oxide (sGO)-integrated Ag PO composite displayed very high catalytic activity toward prominent water pollutants like textile dyes and fungicide under sunlight. The optimum amount of sGO doping was found as 5% for degradation. The novel composite degraded 99% of methylene blue (MB) in only 5 min of sunlight exposure, which is 16 and 8 times faster than Ag PO and 5% GO-Ag PO . High mineralization was observed for MB with a total organic carbon (TOC) removal of 98% in 30 min. The composite mineralized rhodamine B, methyl orange, and acid red 18 dyes with a TOC removal above 95%. Moreover, a toxic dithiocarbamate fungicide thiram was degraded in 1 h with a TOC removal of 82% leaving less toxic thiourea. The formation of sGO-Ag PO n-n heterojunction increases charge transport and photocatalytic activity of the composite to incredible extent along with hollow morphology and in situ formed Ag nanoparticles (AgNPs).
ISSN:1614-7499