Extremely Well-Dispersed Zinc Oxide Nanofluids with Excellent Antibacterial, Antifungal, and Formaldehyde and Toluene Removal Properties

Abstract

Herein, a polymer dispersant is used to modify zinc oxide (ZnO) nanoparticles with the assistance of a self-made dispersion device to produce nanofluids with excellent dispersion. The ZnO nanoparticles can be well dispersed in an aqueous solution in a high proportion (20 wt %). The average size of ZnO nanoparticles dispersed in nanofluids is 86.5 nm. After testing and analysis, the ZnO nanofluids have excellent antibacterial, antifungal, and formaldehyde and toluene removal performance. The antibacterial rate of 4% ZnO (w/v) can reach 99.99%. It has been verified in pure milk that ZnO can well inhibit fungi and deterioration. These satisfactory characteristics of the nanofluids are all attributed to the excellent dispersion of ZnO nanoparticles. In addition, the dispersed ZnO nanoparticles are used to modify polymer materials (polypropylene random and low-density polyethylene), endowing them with excellent antibacterial and mechanical properties. Therefore, they are expected to be used in food packaging materials in the future.

Design of HDPE‐based nanocomposite with excellent thermal‐oxidative aging resistance, mechanical properties and electrical insulation properties: Dispersing nano‐ZnO assisted by natural rubber latex

“…The natural rubber latex with 60% solid content was purchased from Zhongnong Science and Technology Co., Ltd. (Hainan). ZnO nanofluids, with a solids content of 20%, were prepared through an invention patent of our research group 30 . See S1, Supporting Information for details.…”

“…ZnO nanofluids, with a solids content of 20%, were prepared through an invention patent of our research group. 30 See S1, Supporting Information for details. Anhydrous calcium chloride was purchased from Weifang Haizhiyuan Chemical Co., Ltd.…”

Advancement in nanomaterials for environmental pollutants remediation: a systematic review on bibliometrics analysis, material types, synthesis pathways, and related mechanisms

“…Aggregation of magnetic iron oxide base NMs alters the magnetic properties and reduces surface energy [ 34 ]. Thus, the functionalization of iron oxide NMs with inorganic and organic material having adsorption properties are recommended in the literature because they prevent iron oxide from oxidation [ 17 , 37 ]. Surface functionalization with functional groups like carboxylic group (–COOH) and (–NH 2 ) groups has been observed to confer notable enhancements in terms of stability, adsorption efficiency, and surface area especially for chelating metal ions [ 34 ].…”

Preparation and Biological Characteristics of LDPE/Vanillin-Containing Benzoxazines Composites for Antibacterial Stent Materials

“…20 ZnO nanoparticles were blended with LDPE to obtain antibacterial composites, but when the ZnO content was as high as 4 wt %, the antibacterial rate against bacteria could reach 99%. 21 Chitosan and its derivatives were also blended with LDPE, 22 and the LDPE/CS composites had an 88.7% inhibitory effect on Bacillus subtilis with 2.0 wt % chitosan, whereas the elongation at break decreased by 75.79%. 23 Thus, adding conventional antibacterial agents directly to LDPE lacks high antibacterial activity, results in considerable antimicrobial additions, and dramatically reduces its toughness.…”

“…High-density polyethylene (HDPE) and carboxyl graphene (CG)-grafted modified HDPE were mixed to create antibacterial composites whose antibacterial ratio was only 40% with 4 wt % CG- g -MHDPE . ZnO nanoparticles were blended with LDPE to obtain antibacterial composites, but when the ZnO content was as high as 4 wt %, the antibacterial rate against bacteria could reach 99% . Chitosan and its derivatives were also blended with LDPE, and the LDPE/CS composites had an 88.7% inhibitory effect on Bacillus subtilis with 2.0 wt % chitosan, whereas the elongation at break decreased by 75.79% .…”