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Home / Journal of Nanoscience and Nanotechnology, Volume 19, Number 6

Enhanced Photocatalytic Degradation Activity of 2-D Graphitic Carbon Nitride-SnO2 Nanohybrids

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In this paper, we report on the facile synthesis of graphitic carbon nitride (g-C3N4)-tin oxide (SnO2) nanohybrid as an efficient photocatalyst prepared via sol–gel method. SnO2 nanoparticles are pointcontacted with g-C3N4. The results of physio-chemical characterizations such as SEM-EDAX, XRD, BET, FT-IR and UV-DRS spectra reveal the successful formation and integration of nanohybrid. The photocatalytic activity has been studied by using methylene-blue as a model dye for degradation. It has been observed that the pseudo-first order rate constant was increased up to 1.78 times compared with pure SnO2. The enhanced photocatalytic activity was ascribed from the inhibition of electron–hole recombination where g-C3N4 nanosheets acts as an electron receiver from SnO2 via point contact. This mechanism is further verified via photoluminescence spectra. Our results prominently show new insights and potential applications of g-C3N4-SnO2 nanohybrids in the waste water treatment and environmental remediation sectors.

Keywords: 2D g-C3N4–SnO2 Nanohybrid; Degradation; Electron–Hole Recombination; Photocatalyst

Document Type: Research Article

Affiliations: 1: Department of Chemistry and Research Institute, SRM Institute of Science and Technology, Kattankulathur, Chennai 603203, Tamil Nadu, India 2: Key Lab of Advanced Transducers and Intelligent Control System, Ministry of Education and Shanxi Province, College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan 030024, P. R. China 3: Department of Nanosciences and Technology, Karunya Institute of Technology and Sciences, Coimbatore 641114, Tamil Nadu, India 4: Department of Mechanical System and Design, School of Engineering, Tohoku University, Sendai-980-8578, Japan 5: Department of Materials Science, School of Technology, Central University of Tamil Nadu, Neelakudi Campus, Thiruvarur 610101, Tamil Nadu, India

Publication date: 01 June 2019

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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