CAJ | 학술논문

以反相微乳液体系制备二氧化硅包覆银纳米粒子核壳微球，从中探讨了不同R值（R＝n 水/n 表面活性剂）所形成的微乳液滴的粒径分布；以及柠檬酸三钠稳定的银离子浓度和正硅酸乙酯（TEOS）浓度对二氧化硅包覆银纳米粒子核壳微球粒径和形貌的影响。结果表明：R越大，微乳液滴粒径越小。当R=10时，0.15mL的0.0123mol/L 柠檬酸三钠溶液、0.25mL的0.02467mol/L 硝酸银溶液、0.15mL 的0.0924mol/L硼氢化钠溶液、0.05mL的正硅酸乙酯和0.1mL氨水所得到的核壳微球形貌和单分散性较好。
이반상미유액체계제비이양화규포복은납미입자핵각미구，종중탐토료불동R치（R＝n 수/n 표면활성제）소형성적미유액적적립경분포；이급저몽산삼납은정적은리자농도화정규산을지（TEOS）농도대이양화규포복은납미입자핵각미구립경화형모적영향。결과표명：R월대，미유액적립경월소。당R=10시，0.15mL적0.0123mol/L 저몽산삼납용액、0.25mL적0.02467mol/L 초산은용액、0.15mL 적0.0924mol/L붕경화납용액、0.05mL적정규산을지화0.1mL안수소득도적핵각미구형모화단분산성교호。
The silicon dioxide coated silver nanoparticles with core-shell structure are prepared by the inverse microemulsion system and the microemulsion droplet size distribution formed with different R value (R = nwater/nsurfactant) are discussed together with the influences of different concentrations of silver ion stabilized by sodium citrate and ethyl orthosilicate (TEOS) on the size and the morphology of core-shell particles The results show that the bigger the R value is , the smaller the particle size is. The best result with better morphology and monodispersity will be obtained under these conditions that include 0.15mL of 0.0123mol/L sodium citrate solution , 0.25mL of 0.02467mol/L silver nitrate solution, 0.15mL of 0.0924mol/L sodium borohydride solution, 0.05mL tetraethoxysilane and 0.1mL ammonia.