Synthesis of antimicrobial cellulosic derivative and its catalytic activity

Cellulose acetate-quercetin composite was prepared by Solvent exchange technique. The structure and morphology of the prepared samples were analyzed by several spectroscopic tools, fourier transform Infrared, scanning electron microscope, thermal gravimetric, surface area, zeta potential, and particle sizer. These techniques proved that the prepared composite structure had a decorated needle structure. It had transmittance vibration modes mixing from both precursors. The properties of the composite were changed to be high stability and high mesopore volume than in those precursors. The minimal inhibitory concentration for gram-positive, gram-negative bacteria and fungal strain was studied. The antimicrobial activity of the prepared composites against Bacillus subtilis NCID-3610, Staphylococcus aureus NCTC-7447, Pseudomonas aeruginosa NCID-9016, E. coli NCTC-10416 and the unicellular fungi Candida albicans NCCLS 11 were recorded to be 0.8, 6.3, 12.5, 6.3 and 0.4 mu g/ml, respectively. Also, the reduction-catalytic degradation of harmful 4-Nitrophenol using NaBH4 in the presence of cellulose acetate-quercetin composite was studied. The time elapsed to complete 28% degradation was found to be 18 min. Thus, these cellulose composites are promising water treatment and preservation materials. (C) 2018 The Authors. Production and hosting by Elsevier B.V.