title: Improved thermal stability of oxide-supported naked gold nanoparticles by ligand-assisted pinning.
abstract: We report a method to improve the thermal stability, up to 900 °C, of bare-metal (naked) gold nanoparticles supported on top of SiO(2) and SrTiO(3) substrates via ligand-assisted pinning. This approach leads to monodisperse naked gold nanoparticles without significant sintering after thermal annealing in air at 900 °C. The ligand-assisted pinning mechanism is described.
authors.affiliation: Centre de Recerca en Nanoenginyeria, UPC, Barcelona 08028, Spain. cesar.moreno.sierrra@upc.edu
authors.forename: César
authors.initials: C
authors.lastname: Moreno
authors.forename: Núria J
authors.initials: NJ
authors.lastname: Divins
authors.forename: Jaume
authors.initials: J
authors.lastname: Gázquez
authors.forename: Maria
authors.initials: M
authors.lastname: Varela
authors.forename: Inmaculada
authors.initials: I
authors.lastname: Angurell
authors.forename: Jordi
authors.initials: J
authors.lastname: Llorca
mesh_terms: D004355:Drug Stability; D004595:Electroplating / Q000379:methods; D006046:Gold / Q000737:chemistry*; D008024:Ligands; D053768:Metal Nanoparticles / Q000737:chemistry*; D008954:Models, Biological; D010087:Oxides / Q000737:chemistry; D012821:Silanes / Q000138:chemical synthesis / Q000737:chemistry; D017655:Silicon Compounds / Q000138:chemical synthesis / Q000737:chemistry; D012822:Silicon Dioxide / Q000737:chemistry*; D013499:Surface Properties; D013696:Temperature
chemical_list: D008024:Ligands; D010087:Oxides; D012821:Silanes; D017655:Silicon Compounds; D006046:Gold; D012822:Silicon Dioxide