Title
Synthesis of bulk g-C3N4/Bi2WO6 nanocomposite for effective photocatalytic reaction and for antimicrobial activity by hydrothermal method
Author
Malayappan Helen Selvi, Pradeep Reddy Vanga, Subramanian Harinee, Mahalingam Ashok
Year
2019
Journal
Research on Chemical Intermediates
Abstract
Bi2WO6 was modified by adding metallic-free polymer graphitic carbon nitrite-g-C3N4 for efficient photocatalytic performance and also for antimicrobial activity. Bulk g-C3N4/Bi2WO6 was synthesized by a simple hydrothermal method. Structure and morphology characterization have been performed by XRD, FE-SEM, SAED pattern, and HR-TEM analysis, which provides well-defined nanoplate structure of Bi2WO6 and bulk structure of g-C3N4. In these g-C3N4/Bi2WO6 catalysts have two-dimensional heterogeneous structures which provide the number of photoinduced charge carriers for effective photocatalytic reaction. EDS study confirms the presence of Bi, W, O, N, and C molecules in the composite and crystal structure. PL study indicates reduction in intensity was due to reduced recombination of electron hole pair and enhancement of photocatalytic reaction for 30% g-C3N4/Bi2WO6 compare to 20% g-C3N4/Bi2WO6 and 10% g-C3N4/Bi2WO6. EIS analysis report provides evidence for inhibiting the recombination of electron–hole pair. In order to determine the photocatalytic reaction for water purification by these catalysts, organic dyes like methylene blue have been selected as pollutant under visible-light irradiation. Also in addition, nanocomposite could be an asset for antimicrobial activity and photocatalytic dye degradation.
Instrument
V-670, FP-8500
Keywords
Diffuse reflectance, Band gap, Absorption, Photoluminescence, Fluorescence, Nanostructures, Materials