tailieunhanh - Báo cáo hóa học: " Magnetic Iron Oxide Nanoparticles: Synthesis and Surface Functionalization Strategies"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Magnetic Iron Oxide Nanoparticles: Synthesis and Surface Functionalization Strategies | Nanoscale Res Lett 2008 3 397-415 DOI s11671-008-9174-9 NANO REVIEW Magnetic Iron Oxide Nanoparticles Synthesis and Surface Functionalization Strategies Wei Wu Quanguo He Changzhong Jiang Received 8 July 2008 Accepted 11 September 2008 Published online 2 October 2008 to the authors 2008 Abstract Surface functionalized magnetic iron oxide nanoparticles NPs are a kind of novel functional materials which have been widely used in the biotechnology and catalysis. This review focuses on the recent development and various strategies in preparation structure and magnetic properties of naked and surface functionalized iron oxide NPs and their corresponding application briefly. In order to implement the practical application the particles must have combined properties of high magnetic saturation stability biocompatibility and interactive functions at the surface. Moreover the surface of iron oxide NPs could be modified by organic materials or inorganic materials such as polymers biomolecules silica metals etc. The problems and major challenges along with the directions for the synthesis and surface functionalization of iron oxide NPs are considered. Finally some future trends and prospective in these research areas are also discussed. Keywords Magnetic iron oxide NPs Surface functionalization Preparation Application W. Wu C. Jiang El Department of Physics Wuhan University Wuhan 430072 People s Republic of China e-mail czjiang@ W. Wu e-mail Q. He Key Laboratory of Green Packaging and Bio-Nanotechnology Applications Hunan Province Hunan University of Technology Zhuzhou 412008 People s Republic of China e-mail hequanguo@ Introduction Nanoparticle are submicron moieties diameters ranging from 1 to 100 nm according to the used term although there are examples of NPs several hundreds of nanometers in size made of inorganic or organic materials which have many novel properties compared with the bulk materials 1 . On this basis magnetic NPs have