Synthesis and characterization of gold–chitosan nanocomposite and application of resultant nanocomposite in sensors

Applications of chitosan powder with in situ synthesized nano ZnO particles as an antimicrobial agent

“…As 4 shown in Fig. 4 the three composites show similar absorbance and their value of λ max is 5 almost close to each other supporting the XRD results. 16 The band gap energy of chitosan-nanoZnO composites powder was measured from 17 absorption spectra using the following equation:…”

“…Pure chitosan5 polymer exhibited a two-step mass loss; the first stage of mass loss observed, up to 140°C,6 was attributed to the loss of hydrated water and the second stage of mass loss observed in the 7 temperature range 290-500 °C was due to the final degradation of the polymer[33] 8. However, the composites did not show considerable amount of mass loss below 150 °C but in 9 the temperature range 240-450 0 C they show significant mass loss due to the degradation of 10 the polymer matrix[34].…”

“…Antibacterial properties of filter paper disc 3 treated with bionanocomposites are measured by the inhibition zone method. The presence of 4 any clear zone that formed around the disc on the plate medium was recorded as an indication 5 of inhibition against the microbial species. formation of composites, the strong bands corresponding to -NH 2 , and -OH are found to be 21 shifted to lower regions (3387 cm -1 ).…”

“…The 2 objective of this work was to formulate a simple and cost effective bionanocomposite for the 3 possible uses as an antimicrobial wound dressing materials, cotton fabrics and packing 4 materials for food stuffs. 5 Chitosan with 85 % degree of deacetylation was purchased from Sigma Aldrich Co. 8 Ltd (USA). Acetic acid, sodium hydroxide, and zinc acetate dihydrate were purchased from 9 Merck (Germany).…”

Biomimetic glycopolymers tethered gold nanoparticles: Preparation, self-assembly and lectin recognition properties

“…The hybrid nanoparticles have held a significant promise in the areas of sensing, catalysis, and biomedical applications [6][7][8][9][10][11][12]. Gold nanoparticles (Au NPs), owing to their ease of synthesis, functionalization and extensively biological applications have attracted particular interest [13][14][15][16].…”