Construction of high efficient g-C3N4 nanosheets combined with Bi2MoO6-Ag photocatalysts for visible-light-driven photocatalytic activity and inactivation of bacterias

Abstract

Novel g-C3N4-Bi2MoO6-Ag nanocomposite with their g-C3N4 nanosheets were synthesized by a facile hydrothermal method. The superior photocatalytic performance of gC3N4-Bi2MoO6-Ag nanocomposite was owing to the interface of Bi2MoO6/Ag nanomaterials whereas reduced the bandgap which enables high separation efficiency, suppressed recombination rate of charge carriers and their high specific surface area (97.4 cm3 g−1). For the MB dye degradation efficiency accomplishes 99.6% within 80 min under the visible light. Significantly, the ideal photocatalytic activity of gC3N4-Bi2MoO6-Ag composite has 3.63 times faster than pristine g-C3N4. Based on the trapping test, the superoxide radical O2•- and hydroxyl radical (OHrad) plays a vital role in dye degradation in chief g-C3N4-Bi2MoO6-Ag nanocomposite under the visible light exposure. Novel gC3N4-Bi2MoO6-Ag catalyst has been exhibited superior electrochemical performance, which is smaller charge transfer resistance (impedance), and the prime photocurrent response has confirmed that more charge carrier abilities. The physicochemical assemblies and high degradation efficiencies were preserved after five successive cycles, whereas signifying that the sample was displayed good stability. Based on the consistent energy band positions, the probable mechanism for heightening photocatalytic activity was proposed. This study delivers a visible light driven novel g-C3N4-Bi2MoO6-Ag photocatalyst is a capable aspirant material and applicable for environmental remediation. Also, the antibacterial activity is well exposed towards disinfection of the bacterial strain, including pathogens which are S. aureus (G+) and E. coli (G−) bacteria’s. Keywords: gC3N4-Bi2MoO6-Ag, Nanosheets, Visible light, Degradation, Light-harvesting, High surface area