摘要
以无毒、可生物降解的蔗糖酯作为表面活性剂,以氢氧化钠和硝酸银为原料,采用化学沉淀法制备纳米氧化银。考察不同因素对产物粒径的影响。结果表明:在硝酸银浓度0.04mol/L、氢氧化钠浓度0.04mol/L、蔗糖酯质量浓度1.2g/L、反应时间60min和温度40℃条件下电动搅拌制得的纳米氧化银的粒径为76.5nm,粒度分布均匀,分散性较好。说明蔗糖酯能有效地分散纳米粒子并防止其团聚。
Nano-scaled silver oxide was synthesized from sodium hydroxide and silver nitrate with non-toxic and biodegradable sucrose ester as a surfactant by chemical precipitation.The effects of different factors on particle size of nano silver oxide were investigated.The results showed that nano silver oxide with an average size of 76.5 nm was prepared under the conditions of 0.04 mol/L AgNO3,0.04 mol/L NaOH,1.2 g/L sucrose ester,reaction time of 60 min and reaction temperature at 40 ℃ with the aid of electric mixing.The prepared nanoparticles had uniform size distribution and good dispersion,which suggested that sucrose ester could effectively disperse nanoparticles and prevent aggregation.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2011年第17期72-75,共4页
Food Science
基金
广西科学研究与技术开发项目(桂科能10100025)
广西自然科学基金项目(2011GXNSFA018058
2011GXNSFA018124)
广西大学科研基金项目(XJZ110663)
关键词
纳米氧化银
蔗糖酯
表面活性剂
粒径
nano silver oxide
sucrose ester
surfactant
particle size
