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《Inorganic Chemicals Industry》 2010-06
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Preparation and surface modification of nano-sized ZnO

Cai Hong,Chen Yan,Xie Shaojian(Department of Chemistry,Hanshan Normal University,Chaozhou 521041,China)  
With ZnSO4·7H2O and NaHCO3 as principal raw materials,nano-sized ZnO was prepared by solid state reaction at room temperature combining with microwave pyrolysis.In order to improve surface physical-and-chemical properties of nano-particles of ZnO,stearic acid was adopted to modify ZnO surface.Modification process conditions,modification mechanism,and influencing factors of nano-sized ZnO particle′s lipophilic properties were discussed.Modified nano-sized ZnO was characterized by FT-IR.Results showed stearic acid and nano-sized ZnO were linked by covalent bonds,and dispersibility of nano-sized ZnO in organic solvent were much better after modification.Optimal conditions of surface modifying were as follows:mass fraction of stearic acid was 10%,modification temperature was 60 ℃,and modification time was 40 min.
【Fund】: 广东省自然科学基金项目资助(No06301028);; 韩山师范学院青年科学基金项目资助(K04013)
【CateGory Index】: TB383.1
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