Size controlled synthesis of SnO2 and its electrostatic self- assembly over reduced graphene oxide for photocatalyst and supercapacitor application
- Division of Nanoscience and Technology, Bharathidasan Institute of Technology (BIT) Campus, Anna University, Tiruchirappalli, 620024 (India)
- Department of Physics, Indian Institute of Technology Madras, Chennai, 600036 (India)
- Department of Nanoscience and Technology, Sri Ramakrishna Engineering College, Coimbatore, 641022 (India)
Highlights: • The influence of pH, reaction time and temperature over the control of size of the spheres of SnO{sub 2} by hydrothermal method and further assembly over reduced graphene oxide has been carried out in this report. • The modification of SnO{sub 2} via (3- amino propyl triethoxysilane) makes the electrostatic self- assembly between the positively charged SnO{sub 2} nanostructure and the negatively charged graphene oxide (GO). • The impacts of concentration of GO added to SnO{sub 2} nanostructures and its significance on the morphology and the capacitive property of SnO{sub 2}/rGO composite are evaluated. • The functionalization of graphene enhances the capacitance as well as provides anchoring sites for the decoration by metal oxide nanostructures. - Abstract: Hydrothermally-synthesized, size and shape-controlled SnO{sub 2} nanospheres were electrostatically self-assembled over the surface of reduced graphene oxide (rGO). The control over decoration of SnO{sub 2} nanospheres on rGO was studied by microscopic analysis and the crystallographic structure of SnO{sub 2} hybrid nanocomposites (SnO{sub 2}: rGO) was determined from X-Ray diffraction analysis (XRD). Hybrid nanocomposite in 1:3 ratio exhibited (i) excellent methylene blue degradation capability within 3 min under visible light condition and (ii) high specific capacitance of 337.52 F/g at 0.5 A/g in 1 M H{sub 2}SO{sub 4} electrolyte with 89% of retention after 5000 cycles.
- OSTI ID:
- 22805227
- Journal Information:
- Materials Research Bulletin, Vol. 106; Other Information: Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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