Abstract
A heterostructure nanocomposite of Ag3PO4 grafted onto reduced graphene oxide at different weight percentages is synthesised by sol-gel-hydrothermal method and characterised by X-ray diffraction, transmission electron microscopy, and X-ray photoelectron, diffuse reflectance, Raman, Fourier transform infrared, and photoluminescence spectroscopy. The material is used for adsorption and photodegradation of Acid Blue 25 dye in aqueous solution; both are influenced by catalyst load, initial dye concentration, and solution pH. Adsorption follows pseudo first-order kinetics, which can be best fitted with the Lagergren pseudo first-order kinetic model and photocatalytic degradation, a modified Langmuir–Hinshelwood model. Photocatalytic performance of Ag3PO4 is greatly improved when embedded in reduced graphene oxide which is appertained to the small sized, well-dispersed Ag3PO4 particles, high adsorption, and low e+–h− pair recombination.
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Acknowledgements
The authors gratefully acknowledge SAIC, Tezpur University, SAIF, Gauhati University, CIF, IIT Guwahati, Assam, CSIR-CERI, Karaikudi, Tamilnadu, and ACMS, IIT Kanpur, India, for various characterisation of the materials.
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Kausor, M.A., Chakrabortty, D. Optimization of system parameters and kinetic study of photocatalytic degradation of toxic acid blue 25 dye by Ag3PO4@RGO nanocomposite. J Nanopart Res 22, 93 (2020). https://doi.org/10.1007/s11051-020-04829-3
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DOI: https://doi.org/10.1007/s11051-020-04829-3