维普中文期刊产品整合服务

Stepwise synthesis of cuprous oxide nanoparticles with adjustable structures and growth model

查看全文 作　　者：YANG [1]AiLing;WANG [1]YuJin;LI [1]ShunPin;BAO [2]XiChang;YANG [2]RenQiang 高影响力作者 机构地区：[1]Department of Physics, Ocean University of China;[2]Qingdao Institute of Bioenergy & Bioprocess Technology, Chinese Academy of Sciences高影响力机构 出　　处：《Science China(Technological Sciences)》索引2014年第57卷第11期,共8页高影响力期刊 基　　金：supported by the National Natural Science Foundation of China(Grant Nos.41172110 and 61107090);Shandong Provincial Natural Science Foundation(Grant No.ZR2011BZ007) 摘　　要：By stepwise adding of reducer N2H4·H2O,cuprous oxide(Cu2O)nanoparticles(NPs)with adjustable structures were synthesized.The features of Cu2O NPs were characterized by XRD,TEM and UV-Vis absorption spectra.When the reducer was added into the reactant system at one time,the sizes of the Cu2O NPs are in the range of 120–140 nm.Most Cu2O NPs are solid spheres.As the reducer was divided into two equal parts and stepwisely added,almost all the NPs are hollow spheres with good size(150–170 nm)distribution and dispersity.But when the reducer was divided into three or four equal parts and stepwisely added,the NPs are hollow spheres,core-shell structures or solid spheres,and the sizes distribution of the products is deteriorated.The effect of sodium hydrate(NaOH)was also probed.Addition of NaOH speeded up the nucleation and growth processes of Cu2O NPs.With the alkalinity increase,the shells of the hollow spheres become compact and the thicknesses of the shells increase,but the size distribution of the NPs is deteriorated.The absorption spectra of the Cu2O NPs are tunable.With the shell thicknesses increase,the absorption peaks have red shifts.An inside-outside growth model of Cu2O NPs was proposed to explain the results.The Cu2O single crystalline grains grow not only in the reactant solution,but also inside of the hollow nanospheres.The new Cu2O nanocrystallines can not only aggregate onto the shells of the nano hollow spheres,but also inside and outside of the hollow spheres,which leads to increasing the shell thicknesses of the hollow spheres,forming core-shell structures or small solid spheres of Cu2O NPs,respectively. 关 键 词：铜纳米粒子 氧化亚铜 结构调整 铜纳米颗粒 纳米空心球 可见吸收光谱 尺寸分布 合成
相关文献

参考文献(36)

引证文献(2)

耦合文献(14)

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1　渝公网安备 50019002500403号　违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费