Spatially confined redox chemistry in periodic mesoporous hydridosilica-nanosilver grown in reducing nanopores
Please cite this item using this persistent URLhttp://hdl.handle.net/11693/21722
Journal of the American Chemical Society
- Research Paper 
Periodic mesoporous hydridosilica, PMHS, is shown for the first time to function as both a host and a mild reducing agent toward noble metal ions. In this archetypical study, PMHS microspheres react with aqueous Ag(I) solutions to form Ag(0) nanoparticles housed in different pore locations of the mesostructure. The dominant reductive nucleation and growth process involves SiH groups located within the pore walls and yields molecular scale Ag(0) nanoclusters trapped and stabilized in the pore walls of the PMHS microspheres that emit orange-red photoluminescence. Lesser processes initiated with pore surface SiH groups produce some larger spherical and worm-shaped Ag(0) nanoparticles within the pore voids and on the outer surfaces of the PMHS microspheres. The intrinsic reducing power demonstrated in this work for the pore walls of PMHS speaks well for a new genre of chemistry that benefits from the mesoscopic confinement of Si-H groups. © 2011 American Chemical Society.
Showing items related by title, author, creator and subject.
Üçüncü, E.; Özkan, A.D.; Kurşungöz, C.; Ülger, Z.E.; Ölmez, T.T.; Tekinay, T.; Ortaç, B.; Tunca, E. (Elsevier Ltd, 2014)The present study investigates and models the effect of laser ablated silver nanoparticles (AgNPs) on the development of the aquatic macrophyte Lemna minor. Toxic effects of five different AgNP concentrations (8, 16, 32, ...
One-step synthesis of size-tunable Ag nanoparticles incorporated in electrospun PVA/cyclodextrin nanofibers Celebioglu, A.; Aytac, Z.; Umu O.C.O.; Dana, A.; Tekinay, T.; Uyar, T. (2014)One-step synthesis of size-tunable silver nanoparticles (Ag-NP) incorporated into electrospun nanofibers was achieved. Initially, in situ reduction of silver salt (AgNO3) to Ag-NP was carried out in aqueous solution of ...
Yang X.; Tang, Y.; Tan, S.T.; Bosman, M.; Dong, Z.; Leck, K.S.; Ji, Y.; Demir, H. V.; Sun X.W. (2013)Highly luminescent semiconducting AgInS2-ZnS solid solution nanorods are successfully prepared by a facile one-pot solvothermal method. The resulting solid solution nanorods with length of 32 ± 5 nm are formed by fast ...