摘要
借助透射电镜(SEM)研究了不同热分解条件对氧化锌粒径的影响规律。实验发现:在500～900℃的煅烧温度内,随着热分解温度的增加,氧化锌的聚集程度越来越大,平均粒径由50nm增大至500nm;在同一煅烧温度(500℃)下,随着煅烧时间的增加氧化锌的聚集程度呈增大趋势,平均粒径由50nm增大至300nm。相同热分解条件下,由乙醇洗涤的草酸锌制备的氧化锌粒径分布较窄(10～50nm),而由水洗涤的草酸锌制备的氧化锌粒径分布较宽(30～80nm)。热分解草酸锌制备纳米氧化锌的适宜工艺条件为:500℃,1h。
Influences of different thermolysis conditions on the grain size of nanometer zinc oxide were studied with SEM.In the range from 500 ℃ to 900 ℃,with the rise of thermolysis temperature,aggregation of zinc oxide particles was enhanced,and the average grain size increased from 50 nm to 500 nm.At the same calcining temperature of 500 ℃,the aggregation level of zinc oxide increased with the calcining time and the average grain size increased from 50 nm to 300 nm.Distribution of the grain size of zinc oxide was narrow(10～50 nm) when it was synthesized with zinc oxalate washed by ethyl alcohol,while under the identical thermolysis conditions with zinc oxalate washed by water,the distribution was wider(30～80 nm).The optimum conditions for synthesis of nanometer zinc oxide by thermolysis of zinc oxalate are 500 ℃ and 1 h.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2004年第1期5-7,15,共4页
Fine Chemicals
关键词
氧化锌
草酸锌
热分解
纳米技术
nanometer zinc oxide
zinc oxalate
thermolysis
nanotechnology
