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

作者：Kirubakaran Kiran Preethi; Thangavel Sakthivel; Nallamuthu Gouthami; Vasudevan Vinesh; Ramasubramanian Priya Arul Selvi; Kumar Ashwini; Venugopal Gunasekaran^*

来源：Journal of Nanoscience and Nanotechnology, 2019, 19(6): 3576-3582.

DOI：10.1166/jnn.2019.16033

• 2D g-C3N4-SnO2 Nanohybrid
• Photocatalyst
• Electron-Hole Recombination
• Degradation

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 point-contacted 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.

• 单位
  太原理工大学