Formation of platinum nanoparticle colloidal solution by gamma-ray irradiation
| Autor: | Kazushige Ishida, Masahiko Tachibana, Yoichi Wada, Motohiro Aizawa, Ota Nobuyuki |
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| Rok vydání: | 2016 |
| Předmět: |
Nuclear and High Energy Physics
Materials science Precipitation (chemistry) Inorganic chemistry Nanoparticle chemistry.chemical_element 02 engineering and technology engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology Platinum nanoparticles 01 natural sciences 0104 chemical sciences Isoelectric point Nuclear Energy and Engineering chemistry Chemical addition engineering Noble metal Particle size 0210 nano-technology Platinum Nuclear chemistry |
| Zdroj: | Journal of Nuclear Science and Technology. :1-9 |
| ISSN: | 1881-1248 0022-3131 |
| DOI: | 10.1080/00223131.2016.1273144 |
| Popis: | Platinum nanoparticle colloidal solution with a small amount of impurities was formed from a suspension of hexahydroxy platinic acid (SHHPA) by gamma-ray irradiation to suppress changes in water chemistry such as electrical conductivity and concentration of impurities in the reactor water during noble metal chemical addition in plant operation. The SHHPA was prepared from sodium hexahydroxyplatinate solution by using an H-type cation exchange resin. Optimum conditions for formation of the platinum nanoparticle colloidal solution were the following: absorbed dose of gamma-ray irradiation, >6 kGy; pH of solution, >8.2; air saturation; no methanol addition. Characteristics of the formed platinum nanoparticles were as follows: mean particle size, 2.3 ± 0.5 nm; particle charge, negative; isoelectric point at a pH of 3.5 ± 0.1; the chemical compound consisted mainly of platinum dioxide without platinum metal. No precipitation of platinum nanoparticles was observed after storage time of 1 year without an... |
| Databáze: | OpenAIRE |
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