CuFeO2纳米粒子的制备及其聚合物复合涂层的抗细菌粘附性

铜基纳米材料在催化、能量储存与转换、生物学传感等诸多领域具有广阔的应用价值,其中,CuFeO2纳米材料的尺寸调控与形貌控制成为该领域的研究热点之一.采用水热合成法,以二价、三价铁盐和二价铜盐为金属离子源,通过柠檬酸钠和乙酸钠等有机小分子的调控,制备了有机分子修饰且单分散性良好的CuFeO2纳米粒子,研究了反应时间及Cu^2+离子浓度对CuFeO2纳米粒子形貌的影响.结果表明,反应8和10h的CuFeO2纳米粒子结晶性良好,随着Cu^2+离子浓度增加CuFeO2纳米粒子的结晶性变差,Cu^2+离子浓度为2.8g/L时,CuFeO2纳米粒子尺寸均一、结晶性好.最后,探究了有机分子修饰的CuFeO2纳米粒子复合涂层的抗细菌粘附性能,结果表明其对大肠杆菌具有良好的抗细菌粘附性.

Preparation of CuFeO2 nanoparticles and their antibacterial adhesion properties of polymer composite coating

Copper-based nanoparticles have many applications in various fields,such as catalysis,energy storage and conversion,and biology.However,the study of size and morphology of CuFeO2 nanoparticles and their properties is still challenging.Herein,divalent,trivalent iron salts and divalent copper salts were used as metal ions.The ultra-fine and good dispersion CuFeO2 nanoparticles modified with short chain were prepared by the regulation of small organic molecules such as sodium citrate and sodium acetate.The effects of reaction time and copper ion concentration on the morphology of CuFeO2 nanoparticles were studied.The results show that the CuFeO2 nanoparticles with good crystallinity could be obtained at 8 and 10 h synthetic duration.As the concentration of copper ions increased,it would have a side effect on the synthesis of CuFeO2.Consequently,the bacterial adhesion properties of organic molecular modified CuFeO2 nanoparticle polymer composite coating were investigated.The results show that it had good antibacterial adhesion to bacillus coli.