Cerium-based metal sulfide derived nanocomposite-embedded rGO as an efficient catalyst for photocatalytic application

Reduced graphene oxide (rGO) with metal sulfides is an efficient photocatalyst for treating textile effluent. Herein, a hydrothermal technique was used to synthesize transition metal sulfide with rGO nanocomposite. Under 120 min of sunlight exposure, the cerium-nickel sulfide/rGO nanocomposite (Ce 2...

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Published in:Environmental science and pollution research international 2023-03, Vol.30 (11), p.29711-29726
Main Authors: Kandhasamy, Narthana, Murugadoss, Govindhasamy, Kannappan, Thiruppathi, Kirubaharan, Kamalan, Manavalan, Rajesh Kumar, Gopal, Ramalingam
Format: Article
Language:English
Subjects:
Aquatic Pollution
Atmospheric Protection/Air Quality Control/Air Pollution
Earth and Environmental Science
Ecotoxicology
Environment
Environmental Chemistry
Environmental Health
Environmental Pollutants
Nanocomposites
Research Article
Sulfides
Waste Water Technology
Water Management
Water Pollution Control
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Summary:Reduced graphene oxide (rGO) with metal sulfides is an efficient photocatalyst for treating textile effluent. Herein, a hydrothermal technique was used to synthesize transition metal sulfide with rGO nanocomposite. Under 120 min of sunlight exposure, the cerium-nickel sulfide/rGO nanocomposite (Ce 2 S 3 -NiS 2 /rGO) photodegraded the methyl orange (MO) dye with an efficiency of 89.1% which is significantly higher than that of bare nickel sulfide (NiS 2 ) and cerium sulfide (Ce 2 S 3 ) photocatalysts. Moreover, another model pollutant dye bromophenol blue (BP) was treated under the same experimental condition, and it has achieved about 84.2% degradation efficiency. The combination of NiS 2 and Ce 2 S 3 improves the separation efficiency of photogenerated carriers, resulting in improved photocatalytic activity. In addition, ternary metal sulfide with rGO increases pollutant adsorption and electron–hole photogenerated pairs. Therefore, the mechanism of photocatalytic Ce 2 S 3 -NiS 2 /rGO is investigated in detail. This research could pave the way for the development of capable and adaptable Ce 2 S 3 -NiS 2 /rGO photocatalysts for environmental remediation. Graphical Abstract
ISSN:1614-7499
1614-7499
DOI:10.1007/s11356-022-24311-y