tailieunhanh - Báo cáo hóa học: " A general strategy for synthesis of metal oxide nanoparticles attached on carbon nanomaterials"

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: A general strategy for synthesis of metal oxide nanoparticles attached on carbon nanomaterials | Zhao et al. Nanoscale Research Letters 2011 6 71 http content 6 1 71 o Nanoscale Research Letters a SpringerOpen Journal NANO EXPRESS Open Access A general strategy for synthesis of metal oxide nanoparticles attached on carbon nanomaterials Yi Zhao Jiaxin Li Chuxin Wu Lunhui Guan Abstract We report a general strategy for synthesis of a large variety of metal oxide nanoparticles on different carbon nanomaterials CNMs including single-walled carbon nanotubes multi-walled carbon nanotubes and a few-layer graphene. The approach was based on the n-n interaction between CNMs and modified aromatic organic ligands which acted as bridges connecting metal ions and CNMs. Our methods can be applicable for a large variety of metal ions thus offering a great potential application. Introduction The attachment of nanoparticles NPs on carbon nanomaterials CNMs including single-walled carbon nanotubes SWNTs multi-walled carbon nanotubes MWNTs and graphene has attracted great interest for the nanocomposites not only combine the extraordinary properties of the NPs and CNMs but also exhibit some new properties caused by the interaction between them 1 2 . For examples when the light-harvesting NPs such as TiO2 ZnO CdS CdSe were attached on carbon nanotubes CNTs with high conductivity the photoca-talytic properties increased dramatically 3-5 . In addition CNTs with large surface areas are ideal supporting materials for catalysts NPs leading to improvements in the efficiency of the catalysts 6-8 . A lot of approaches including assembling pre-synthesized NPs as building blocks on CNTs and spontaneous formation of NPs on CNTs have been applied to prepare NPs CNTs 9-14 . The previous reports mainly focused on attaching NPs on MWNTs by using benzyl alcohol or pyrene derivatives as linkages 15 16 . Development to SWNTs and graphene both with well-defined structures may provide important information to explore the mechanisms of the enhanced properties of NPs after .