Application of Natural Organic Matter in the Biosynthesis of a-Alumina Nanoparticles:the Humic Sol-Gel Route

摘要：

　　A new low cost,low environmental impact methodology has been developed for the synthesis of nanostructured α-alumina.The proposed route employs the complexation capacity of natural organic matter (NOM).The parameters time,calcination temperature,mass,and initial pH were evaluated in order to develop a procedure that was simple,efficient,and had a low energy requirement.The α-alumina phase was produced after 4 hours at pH 4.0 and a temperature of 1000 ℃.This temperature was at least 200 ℃ lower than those used previously for synthesis of alumina.Microscope images revealed the formation of structures with hollow spherical morphology.The results of EDS analyses showed that spurious phases were absent,in agreement with XRD measurements.

关键词： Biosynthesis Natural organic matter Alumina Nanoparticles

作者: Graziele da Costa Cunha Luciane Pimenta Cruz Rom(a)o Zélia Soares Macedo

作者单位: Department of Materials Engineering,University Federal de Sergipe,49100-000 S(a)o Cristóv(a)o,SE,Bra Departament of Chemical,University Federal de Sergipe,49100-000 S(a)o Cristóv(a)o,SE,Brazil Departament de Physical,University Federal de Sergipe,49100-000 S(a)o Cristóv(a)o,SE,Brazil

会议类型: 国际会议

会议名称: the 16th Meeting of the International Humic Substances Society (第十六届国际腐殖物质学会大会(IHSS 16))

会议地点: 杭州

会议语种:英文

页码: 425-427

在线出版日期: 2012-09-09（万方平台首次上网日期，不代表论文的发表时间）