Fabrication of succinic acid-纬-Fe₂O₃ nano core-shells

详细信息	查看全文 | 推荐本文 |

• 作者：L. Jayarathne^a ; W.J. Ng^b ; A. Bandara^c ; M. Vitanage^a ; C.B. Dissanayake^a ; R. Weerasooriya^d ; ^{rohan@uwu.ac.lk} ; ^{rweerasooriya@hotmail.com}
• 关键词：Succinic acid ; Streptomycin ; 纬-Fe2O3 ; Core&ndash ; shell nano particles
• 刊名：Colloids and Surfaces A ; Physicochemical and Engineering Aspects
• 出版年：2012
• 期刊代码：22_09277757
• 类别：ch
• 出版时间：5 June, 2012
• 卷：403
• 期：Complete
• 页码：96-102
• 文件大小：829 K

摘要

Core-shell nano-structures were synthesized by adsorbing succinic acid on 纬-Fe₂O₃ nanoparticles (hereafter referred to as core-shell nanoparticles or core-shells). Streptomycin was chosen as a model drug to attach on 纬-Fe₂O₃ core-shells. Vibration spectroscopic data confirmed the specific adsorption of organic ligands (i.e., succinic acid or streptomycin) onto 纬-Fe₂O₃ via bi-dentate, bi-nuclear complex. Possible molecular configurations between organic ligands and 纬-Fe₂O₃ were examined by density functional theory (DFT) using Fe₆(OH)₁₈(H₂O)₆ ring cluster. The measured vibration frequencies and bond distances (i.e., FeOFe, FeO_w, and FeOH units) of the optimized 纬-Fe₂O₃ cluster matched well with the calculations.