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Koshigaya, Japan

Nishioka M.,Japan National Institute of Advanced Industrial Science and Technology | Miyakawa M.,Japan National Institute of Advanced Industrial Science and Technology | Daino Y.,Japan National Institute of Advanced Industrial Science and Technology | Kataoka H.,K. K. Shinko Kagaku Kogyosho | And 3 more authors.
Chemistry Letters | Year: 2011

Rapid and continuous synthesis of size-controlled platinum nanoparticles is achieved using a single-mode microwave flow reactor controlled with temperature feedback module. Platinum nanoparticles are synthesized within 2.8 s of residence time in glycerol and 1,3-propanediol having large dielectric dissipation factor and high solvent viscosity. © 2011 The Chemical Society of Japan.

Kobayashi Y.,Ibaraki University | Ishii Y.,Ibaraki University | Yamane H.,Ibaraki University | Watanabe K.-I.,K. K. Shinko Kagaku Kogyosho | And 2 more authors.
Colloids and Surfaces A: Physicochemical and Engineering Aspects | Year: 2014

An electroless metal plating method was used to form Pt shells on sub-micrometer-sized titania particles fabricated by a sol-gel method. The electroless metal plating method comprised three steps: (1) surface-modification of titania particles with poly(diallyldimethylammonium chloride) (PDADMAC) (TiO2-PDADMAC), (2) pre-deposition of Pt nuclei or Pt fine particles on the titania particles by reducing Pt ions in the presence of TiO2-PDADMAC particles (TiO2-Pt) and (3) growth of the pre-deposited Pt by immersing the TiO2-Pt particles in a Pt-plating solution. TEM observation and X-ray diffractometry revealed that surface modification with PDADMAC promoted the pre-deposition of Pt and that crystalline Pt shells with a thickness of approximately 25nm were successfully produced on the titania particles using initial concentrations of 0.8×10-3M TiO2 and 0.375×10-3M Pt in the Pt-plating solution. © 2014.

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