[Ceramic Transactions Series] Advances in Nanomaterials and Nanostructures (Lu/Advances) || Magnetically-Driven Release Media Comprising of Carbon Nanotube-Nickel/Nickel Oxide Core/Shell Nanoparticle Heterostructures Incorporated in Polyvinyl Alcohol
✍ Scribed by Lu, Kathy; Manjooran, Navin; Radovic, Miladin; Medvedovski, Eugene; Olevsky, Eugene A.; Li, Chris; Singh, Gurpreet; Chopra, Nitin; Pickrell, Gary
- Publisher
- John Wiley & Sons, Inc.
- Year
- 2011
- Weight
- 766 KB
- Edition
- 1
- Category
- Article
- ISBN
- 1118060024
No coin nor oath required. For personal study only.
✦ Synopsis
We report a simple synthetic approach for carbon nanotube (CNT)-Ni/NiO core/shell nanoparticles heterostructures (CNC heterostructures) in a single-step direct nucleation and air oxidation of Ni nanoparticles on multi-walled CNTs. Detailed characterization (SEM and TEM) of CNC heterostructure was carried out and as a next step these heterostructures were successfully incorporated into a polyvinyl alcohol (PVA) hydrogel to result in a magnetic hydrogel (CNC heterostructure-PVA hydrogel), which could be deflected by 60° under a 0.2 T permanent magnet. In addition, CNC heterostructures were loaded (physically adsorbed) with Lhistidine and then incorporated within the PVA hydrogel. This unique nanosystem was studied for the release of loaded L-histidine, with and without the external magnetic field. It was observed that the amount of histidine released from the hvdrogel was increased by 12.9% under 0.2 T magnetic field as compared to the release without any magnetic field. Such a unique hybrid hydrogel incorporating magnetic CNC heterostructures hold great promise for smart drug delivery nanosystems.