Enhanced Visible‐Light Photocatalytic and Antibacterial Activities of Ag‐Doped g‐C₃N₄ Nanocomposites

Abstract

The silver modified graphitic carbon nitride (g‐C3N4/Ag) was prepared by the photo‐deposition method. The crystal structures, chemical structures, morphology, recombination rate and surface charge were characterized by X‐ray diffraction spectroscopy (XRD), Fourier transform‐infrared spectroscopy (FTIR), Transmission electron microscopy (TEM), photoluminescence spectra (PL), and zeta potential, respectively. The effects of silver content on the photocatalytic and antibacterial performance were studied. The photocatalytic mechanism of the g‐C3N4/Ag was revealed by free radical capture. The results showed that the prepared catalysts had layered stack structure. The photocatalytic property and antibacterial activity of g‐C3N4/Ag nanocomposites were significantly promoted by the modification of silver nanoparticles.

Photodeposition of Silver on Zinc/Calcium Ferrite Nanoparticles: A Contribution to Efficient Effluent Remediation and Catalyst Reutilization

“…The prepared zinc/calcium ferrite nanoparticles, either by the sol-gel or co-precipitation method, were coupled with silver by photodeposition adapting a method described by Liu et al [30]. First, 30 mg of nanoparticles were dispersed in an aqueous solution under sonication for 30 min.…”

Facile Synthesis of CeO2 Blended CoWO4 Nanocomposites For High Photocatalytic Performance And Investigation of Their Antimicrobial Activity

“…Thislessening in photodegradation efficacystaysascribed to the photo-dissolution and photo-corrosion of theas-obtained catalyst. In accumulation, theXRD patterns and FTIR spectra of the CeO2/CoWO4NC before and after fourrepeated runs were explored in Figure . 11 (A andB).Hence, there was no evidentvarianceamid the intact PCs, establishing that the coupling of CoWO4 and CeO2NMs might availably constrain therecombination of photoexcited (e --h + ) charges to a convinced degree, authorizing the good stability and robustness of CeO2/CoWO4PCs.Thus, the reusability oftheseoutcomesvalidates that the CeO2/CoWO4photocatalyst ownsgreat reusable steadiness and prospectivefor practical photocatalytic applications (Magdalane et al 2017;Yuan et al 2017 andZi-ya et al 2018). Besides, the photodegradation and photoactivity of the CeO2/CoWO4 catalyst wereequated with several nanocomposite materials (Wei et al 2014;Rajendran et al 2016;Hamrouni et al 2013;Luo et al 2012;Yang et al 2012) and it originated in Table . 1.…”

Emerging Roles of Graphitic Carbon Nitride-based Materials in Biomedical Applications

“…As a typical N-type semiconductor, g-C 3 N 4 can participate in the photocatalytic redox reaction of h + , •OH, and O 2– formation owing to its appropriate energy band structure . The photocatalytic antibacterial activity of pure g-C 3 N 4 under visible light excitation is weak, and the modification by noble metal modification and nonprecious metal doping can significantly improve the antibacterial ability of g-C 3 N 4 nanosheets. − Wang et al constructed a heterojuntion photocatalyst by cowrapping α-sulfur with polymeric g-C 3 N 4 and graphene sheets for photocatalytic inactivation of bacterial cells under visible-light for the first time in 2013 . After that, a large number of g-C 3 N 4 -based nanocomposites were used for antibacterial research.…”