Solar-activated and hydrothermally synthesized effective rGO/Ag2S composites for the destruction of naphthol green B dye and antibacterial applications
- 20 February 2024
- journal article
- research article
- Published by Springer Nature in Environmental Geochemistry and Health
- Vol. 46 (3) , 1-17
Abstract
Graphene-based nanocomposites are developing as a new class of materials with several uses. The varied weight percentages of rGO on Ag2S catalysts were synthesized using a simple hydrothermal process and employed for the decomposition of anionic dye naphthol green B (NGB) under solar light. The reduced graphene oxide-based silver sulfide (rGO/Ag2S) nanoparticles were then examined using XRD, SEM, EDS, HR-TEM, XPS, UV-DRS, and PL analysis. Using solar light, the photocatalytic activity of the produced catalyst was examined for the degradation of naphthol green B (NGB) in an aqueous solution. At pH 9, rGO/Ag2S is discovered to be more effective than the other catalysts for the NGB dye mineralization. Analyses have been conducted on the influence of operational parameters on the photo-mineralization of NGB, including the initial pH, initial dye concentration, and catalyst dosage. The dye concentration increased; the efficiency of photocatalytic degradation tended to decrease. Chemical oxygen demand (COD) studies have verified the NGB dye mineralization. Active species trapping revealed that holes, hydroxyl radicals, and superoxide radicals all played major roles in the photocatalytic deterioration of NGB processes. Additionally, a potential mechanism of NGB dye degradation by rGO/Ag2S catalyst is presented. The synthesized compound was further evaluated for antibacterial activity, and the results indicated that rGO/Ag2S were potentially effective antibacterial agents.Keywords
Funding Information
- King Saud University (RSP2024R398)
This publication has 71 references indexed in Scilit:
- Preparation and characterization of palladium nano-crystallite decorated TiO2 nano-tubes photoelectrode and its enhanced photocatalytic efficiency for degradation of diclofenacJournal of Hazardous Materials, 2013
- Highly Efficient, Solar Active, and Reusable Photocatalyst: Zr-Loaded Ag–ZnO for Reactive Red 120 Dye Degradation with Synergistic Effect and Dye-Sensitized MechanismLangmuir, 2013
- Synthesis of Ce co-doped Ag–ZnO photocatalyst with excellent performance for NBB dye degradation under natural sunlight illuminationCatalysis Science & Technology, 2012
- Ag nanoparticles decorated polyaniline nanofibers: synthesis, characterization, and applications toward catalytic reduction of 4-nitrophenol and electrochemical detection of H2O2 and glucoseCatalysis Science & Technology, 2012
- Graphene–inorganic nanocompositesRSC Advances, 2011
- In situ green synthesis of Au nanostructures on graphene oxide and their application for catalytic reduction of 4-nitrophenolCatalysis Science & Technology, 2011
- An efficient reusable and antiphotocorrosive nano ZnO for the mineralization of Reactive Orange 4 under UV-A lightSeparation and Purification Technology, 2011
- An efficient nanostructured ZnO for dye sensitized degradation of Reactive Red 120 dye under solar lightSolar Energy Materials and Solar Cells, 2011
- Photodegradation of Naphthol Green B in the presence of semiconducting antimony trisulphideJournal of the Serbian Chemical Society, 2011
- Photochemical Green Synthesis of Calcium-Alginate-Stabilized Ag and Au Nanoparticles and Their Catalytic Application to 4-Nitrophenol ReductionLangmuir, 2009