title: [Preparation and property evaluation of graphene oxide based silver nanoparticles composite materials].
abstract: We prepared silver nanoparticles/polyethyleneimine-reduction graphene oxide (AgNP/rGO-PEI) composite materials, and evaluated their quality performance in our center. Firstly, we prepared AgNP/rGO-PEI, and then analysed its stability, antibacterial activity, and cellular toxicity by comparing the AgNP/rGO-PEI with the silver nanoparticles (PVP/AgNP) modified by polyvinylpyrrolidone. We found in the study that silver nanoparticles (AgNP) distributed relatively uniformly in AgNP/rGO-PEI surface, silver nanoparticles mass fraction was 4.5%, and particle size was 6-13 nm. In dark or in low illumination light intensity of 3 000 lx meter environment (lux) for 10 days, PVP/AgNP aggregation was more obvious, but the AgNP/rGO-PEI had good dispersibility and its aggregation was not obvious; AgNP/rGO-PEI had a more excellent antibacterial activity, biological compatibility and relatively low biological toxicity. It was concluded that AgNP/rGO-PEI composite materials had reliable quality and good performance, and would have broad application prospects in the future.
authors.forename: Yupu
authors.initials: Y
authors.lastname: Shen
authors.forename: Jiantai
authors.initials: J
authors.lastname: He
authors.forename: Yangde
authors.initials: Y
authors.lastname: Zhang
authors.forename: Yukun
authors.initials: Y
authors.lastname: Shen
authors.forename: Longjiao
authors.initials: L
authors.lastname: Zhang
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry; D006108:Graphite / Q000737:chemistry*; D008027:Light; D053758:Nanoparticles / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D010316:Particle Size; D011094:Polyethyleneimine / Q000737:chemistry; D018030:Silver Compounds / Q000737:chemistry*
chemical_list: D000900:Anti-Bacterial Agents; D010087:Oxides; D018030:Silver Compounds; D006108:Graphite; C040225:disilver oxide; D011094:Polyethyleneimine