Biological activity of metal nanoparticles and their oxides and their effect on bacterial cells

Photocatalytic dye degradation and biological activities of the Fe2O3/Cu2O nanocomposite

“…However, there is no exact mechanism for the antimicrobial action of metal oxide nanoparticles. 26 The anti-microbial activity of metal oxide nanoparticles was enhanced with increasing surface area and volume of the nanoparticles and decreasing particle size. 27 Inimitable properties and the assessment of interactions between nanomaterials and the biological system are essential.…”

Hybrid Titanium Oxide/Polymer Amphiphilic Nanomaterials with Controlled Size for Drug Encapsulation and Delivery

“…Titanium oxide (TiO 2 ) nanoparticles have attracted major attention in the biomedical field owing to very good cell and biocompatibility, chemical inertness and stability under physiological conditions, and a plethora of biological features . Nano‐TiO 2 has also been proposed in drug delivery .…”

Electrochemical Preparation of Synergistic Nanoantimicrobials

“…In a first experiment, PVMK-based nanocomposite coatings embedding different copper materials/alkyl ammonium salts were put in contact with a bacterial broth. In order to discriminate a possible synergistic action of CuNPs in combination with BAC, nanocomposites containing 5.0% w/w of (a) Cu 2+ salt (CuCl 2 ), (b) tetra-butyl-ammonium perchlorate stabilized CuNPs (CuNPs@TBAP), (c) CuNPs@BAC, and (d) 35.0% w/w of BAC were tested. The results reported in Table 4 showed that the proliferation of the copper resistant microorganism strain (E. Coli ATCC 25922) was slowed down when a huge amount of BAC was dispersed in the coating and was completely inhibited thanks to the combination of CuNPs and BAC.…”

“…Previous studies on nanomaterials stabilized by quaternary alkyl ammonium salts demonstrated a controlled copper release when they are put in contact with aqueous solutions, thus exerting a marked inhibiting action against the growth of various copper-sensitive microorganisms [2,19,27,[34][35][36]. In this work, a systematic evaluation of copper release properties in aqueous solutions of composite films stabilized by BAC disinfectant agent was performed as a function of the CuNPs loading.…”