Silver Nanoparticle Loaded Activated Carbon: An Escalated Nanocomposite with Antimicrobial Property

Abstract

In this work, the antimicrobial property of nanocomposite prepared by loading of silver nanoparticle onto activated carbon (AgNP-AC) was studied. The silver nanoparticles were synthesized biologically from the culture Enterobacter aerogenes and loaded onto the activated carbon. The nanoparticle and nanocomposite were characterized by UV-vis, scanning electron microscopy and X-ray diffraction studies. The spectroscopic assay and zone inhibition test for E. coli and B. subtilis clearly illustrates the antibacterial activity of the silver nanoparticle and nanocomposite. The antimicrobial activity of the nanocomposite was of the nanocomposite was also confirmed with the observed zone of inhibition against beverage, brewery, dairy and dye industrial effluents.

Green Synthesis of an Activated Carbon-Supported Ag and ZnO Nanocomposite for Photocatalytic Degradation and Its Antibacterial Activities

“…In the Ag/ZnO/AC sample a mixture of nanorods and spherical particles were obtained with a high degree of aggregation whiler Ag-ZnO/AC mainly displayed a spherical shape with an average diameter of 35 nm. The bright spots appearing in the SEM images confirm the successful incorporation of AgNPs and ZnONPs on the AC surface [3].…”

“…Few data on antibacterial activities against E. cloacae is available in the literature. Studies are typically focused especially on E. coli, K. pseudomonas and S. aureus [3,4,6,57]. Ag/ZnO/AC was the worst of the samples tested based on the measured inhibition zone diameter [4].…”

“…Many studies report mechanisms of action of common NPs separately such as ZnONPs and AgNPs. Nevertheless, both ZnONPs and AgNPs are known for their great antibacterial activity against Gram class bacteria [3,38,51]. Many studies reported the existence of both amino and carboxyl groups on the cell surface with a high affinity that may justify these antibacterial activities for both Gram bacterial classes.…”

“…Activated carbon in its bare form supports the growth of bacteria due to its biocompatibility. Activated carbon with antibacterial activity can be produced by impregnation of silver nanoparticles [2][3][4][5][6], or metallic oxides such as ZnO [7]. Furthermore, silver and ZnO nanoparticles supported on activated carbon have gained much attention for adsorption [6,[8][9][10][11][12][13][14][15][16], and catalytic applications [7,[17][18][19][20][21][22].…”

Isotherm and thermodynamic studies on the removal of gelatin-stabilized silver nanoparticles from water by activated carbon

“…AC has a broad XRD pattern without any sharp and intense peaks since it is an amorphous structure (43,44). AgNP@AC yielded almost the same XRD pattern as that of AgNPs which means that there is no significant change in AgNPs (44,45).…”