TY - JOUR
T1 - One-step/one-pot decoration of oxide microparticles with silver nanoparticles
AU - Macchione, Micaela A.
AU - Douglas-Gallardo, Oscar A.
AU - Pérez, Luis A.
AU - Passarelli, Nicolás
AU - Moiraghi, Raquel
AU - Spitale, Ana
AU - Bahena, Daniel
AU - Oliva, Fabiana Y.
AU - Mariscal, Marcelo M.
AU - José-Yacamán, Miguel
AU - Coronado, Eduardo A.
AU - Macagno, Vicente A.
AU - Pérez, Manuel A.
N1 - Funding Information:
We thank Claudia Nome from IPAVE, CIAP for her technical assistance in TEM, to the personnel of LAMARX-FaMAF from the Universidad Nacional de Córdoba for their assistance in SEM characterization, to Martin Fox Douglas for his advice in graphic design, and to Martin Harvey for his proof reading. M.A.M., O.A.D.-G, L.A.P., N.P., R.M., and A.S. thank Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) for their fellowship. This research has been supported by the CONICET, the Fondo para la Investigación Científica y Tecnológica (FONCyT) of Argentina, Agencia Nacional de Promoción Científica y Tecnológica (ANPCyT) Program BID, and the Secretaría de Ciencia y Tecnología (SECYT- UNC) by means of different grants: PME(2006) 1544, PIP (2012) 112-201101-00430, PIP (2012) 112-200801-000983, PICT (2012) 2286, PICT (2010) 1233. The authors are indebted for support to the following: Welch Foundation Agency (project AX-1615: Controlling the Shape and Particles Using Wet Chemistry Methods and Its Application to Synthesis of Hollow Bimetallic Nanostructures), and the National Science Foundation (NSF) (PREM grant number DMR-0934218, NSF Grant 1103730: Alloys at the Nanoscale; The Case of Nanoparticles Second Phase) and to Facilities of Kleberg Advanced Microscopy Center (KAMC) and NIH RCMI Nanotechnology and Human Health Core (Grant 5G12RR013646-12) at The University of Texas at San Antonio (UTSA).
PY - 2014/8/15
Y1 - 2014/8/15
N2 - Hypothesis: Heterogeneous nucleation of silver oxide (Ag2O) onto oxide microparticles (OMPs) followed by spontaneous thermal decomposition produce nanostructures made of OMPs decorated with silver nanoparticles (OMP|AgNPs). Experiments: Colloidal chemistry methods have been used to produce the decoration of OMPs with silver nanoparticles (AgNPs), by carrying out the Ag2O precipitation/thermal decomposition. The process is driven in water enriched acetone medium containing NaOH, NH3, AgNO3 and SiO2MPs as substrate. Optical and morphological properties of OMP|AgNPs were characterized by using STEM, EDS, HRTEM and Raman spectroscopy. Findings: A new synthetic method to decorate OMPs (TiO2, SiO2) with metallic AgNPs in a single step/single pot reaction is proven effective to produce OMP|AgNPs either in aqueous or water enriched media.
AB - Hypothesis: Heterogeneous nucleation of silver oxide (Ag2O) onto oxide microparticles (OMPs) followed by spontaneous thermal decomposition produce nanostructures made of OMPs decorated with silver nanoparticles (OMP|AgNPs). Experiments: Colloidal chemistry methods have been used to produce the decoration of OMPs with silver nanoparticles (AgNPs), by carrying out the Ag2O precipitation/thermal decomposition. The process is driven in water enriched acetone medium containing NaOH, NH3, AgNO3 and SiO2MPs as substrate. Optical and morphological properties of OMP|AgNPs were characterized by using STEM, EDS, HRTEM and Raman spectroscopy. Findings: A new synthetic method to decorate OMPs (TiO2, SiO2) with metallic AgNPs in a single step/single pot reaction is proven effective to produce OMP|AgNPs either in aqueous or water enriched media.
KW - Metal-oxide adhesion
KW - Nanostructures
KW - Silver oxide
KW - Synthesis
KW - Thermal decomposition
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U2 - 10.1016/j.jcis.2014.04.039
DO - 10.1016/j.jcis.2014.04.039
M3 - Article
C2 - 24910031
AN - SCOPUS:84899994791
SN - 0021-9797
VL - 428
SP - 32
EP - 35
JO - Journal of Colloid and Interface Science
JF - Journal of Colloid and Interface Science
ER -