A novel colloidal deposition method to prepare copper nanoparticles/polystyrene nanocomposite with antibacterial activity and its comparison to the liquid-phase in situ reduction method
- 21 Downloads
Here, we study a simple and effective colloidal deposition method (D) to synthesize a type of core–shell structure composed of copper nanoparticles/polystyrene (CuNPs/PS) microsphere nanocomposite. CuNPs/PS nanocomposite can effectively avoid the agglomeration and oxidation of CuNPs, while retaining its original antibacterial ability, prolonging the service life of antibacterial materials and improving the practical value of Copper in the antibacterial field. The CuNPs with controllable size and excellent stability are successfully synthesized by the double-template method using polyvinylpyrrolidone–sodium dodecylbenzene sulfonate (PVP–SDBS) as template. Compared to the traditional in situ reduction method (R), the novel colloidal deposition method (D) does not involve any surface pretreatment of the PS microspheres, and the size of the CuNPs loaded on the surface of the support PS microspheres can be conveniently controlled. Therefore, we believe that this method is relatively simple and easy to operate, and it is more practical. In addition, the CuNPs/PS (D) nanocomposite has better antibacterial activity and oxidation resistance than the CuNPs/PS (R) nanocomposite, the symbols D and R mean the CuNPs/PS prepared by the novel colloidal deposition method and the liquid-phase in situ reduction method, respectively. Moreover, both the synthesis mechanism of the double-template method and the mechanism for the superiority of colloidal deposition method are examined. The findings of this study provide new ideas for controllably loading metal nanoparticles on polymeric microspheres.
KeywordsColloidal deposition method Core–shell structure Nanocomposite Antibacterial activity Resistance to oxidation
This work was supported by Harbin Scientific and Technological Special Fund for Innovative Talents (Grant No. 2012RFXXG093).
- Chen CW, Chen MQ, Serizawa T, Akashi M (1998) In-Situ formation of silver nanoparticles on poly(N-isopropylacrylamide)-coated polystyrene microspheres. Adv Mater 10:1122–1126. https://doi.org/10.1002/(SICI)1521-4095(199810)10:143.0.CO;2-N CrossRefGoogle Scholar
- Jung DR, King DE, Czanderna AW (1993) Metal overlayers on organic functional groups of self-organized molecular assemblies. II. X-ray photoelectron spectroscopy of interactions of Cu/CN on 12-mercaptododecanenitrile. J Vac Sci Technol A 11:2382–2386. https://doi.org/10.1116/1.578338 CrossRefGoogle Scholar
- Nador F, Volpe MA, Alonso F, Feldhoff A, Krischning A, Radivoy G (2013) Copper nanoparticles supported on silica coated maghemite as versatile, magnetically recoverable and reusable catalyst for alkyne coupling and cycloaddition reactions. Appl Catal A Gen 455:39–45. https://doi.org/10.1016/j.apcata.2013.01.023 CrossRefGoogle Scholar
- Sugawa K, Yamaguchi D, Tsunenari N (2016) Efficient photocurrent enhancement from porphyrin molecules on plasmonic copper arrays: beneficial utilization of copper nanoantennae on plasmonic photoelectric conversion systems. ACS Appl Mater Interfaces 9(1):750–762. https://doi.org/10.1021/acsami.6b13147 CrossRefPubMedGoogle Scholar
- Wang J, Zhu H, Chen JD, Zhang B, Zhang M, Wang LN, Du ML (2016) Small and well-dispersed Cu nanoparticles on carbon nanofibers: self-supported electrode materials for efficient hydrogen evolution reaction. Int J Hydrogen Energy 41:18044–18049. https://doi.org/10.1016/j.ijhydene.2016.08.058 CrossRefGoogle Scholar
- Warnes SL, Caves V, Keevil CW (2012) Mechanism of copper surface toxicity in Escherichia coli O157: H7 and Salmonella involves immediate membrane depolarization followed by slower rate of DNA destruction which differs from that observed for Gram-positive bacteria. Environ Microbiol 14(7):1730–1743. https://doi.org/10.1111/j.1462-2920.2011.02677.x CrossRefPubMedGoogle Scholar
- Zhong Z, Yin Y, Gates B, Xia Y (2000) Preparation of mesoscale hollow spheres of TiO2 and SnO2 by templating against crystalline arrays of polystyrene beads. Adv Mater 12:206–209. https://doi.org/10.1002/(SICI)1521-4095(200002)12:3%3c206:AID-ADMA206%3e3.0.CO;2-5 CrossRefGoogle Scholar