ʻO nā metala pūʻulu Platinum ka platinum (Pt), rhodium (Rh), palladium (Pd), ruthenium (Ru), osmium (Os), a me iridium (Ir), nona nā metala makamae e like me ke gula (Au) a me ke kālā (Ag) . Loaʻa iā lākou nā paʻa atomika ikaika loa, a no laila, loaʻa iā lākou ka ikaika hoʻopaʻa interatomic nui a me ka nui o ka nui. ʻO ka helu hoʻohui atomika o nā metala pūʻulu platinum a pau he 6, kahi e hoʻoholo ai i ko lākou mau waiwai kino a me kemika. Loaʻa i nā metala hui Platinum kiʻekiʻe nā helu heheʻe, ka conductivity uila maikaʻi a me ka pale ʻana i ka corrosion, ka ikaika wela kiʻekiʻe a me ke kūpaʻa kiʻekiʻe e kolo ana, a me ke kūpaʻa wela kiʻekiʻe. ʻO kēia mau hiʻohiʻona e lilo lākou i mau mea nui no ka ʻoihana hou a me ke kūkulu ʻana i ka pale aupuni, hoʻohana nui ʻia i ka mokulele, aerospace, rockets, atomic energy, microelectronics technology, chemical, aniani, hoʻomaʻemaʻe kinoea a me nā ʻoihana metallurgical, a ke piʻi nei kā lākou kuleana i nā ʻoihana kiʻekiʻe. No laila, ua ʻike ʻia ʻo ia ka "vitamina" a me "metala hou hou" o ka ʻoihana hou.

I kēia mau makahiki i hala iho nei, ua hoʻohana nui ʻia nā metala pūʻulu platinum i nā ʻoihana e like me ka hoʻomaʻemaʻe ʻana i nā kaʻa a me nā kaʻa kaʻa, nā wahie, nā ʻoihana uila a me nā uila, nā mea niho a me nā mea nani. I ke kenekulia 21 paʻakikī, ʻo ka hoʻomohala ʻana i nā mea metala pūʻulu platinum e kāohi pololei i ka wikiwiki o ka hoʻomohala ʻana o kēia mau ʻenehana kiʻekiʻe, a pili pū kekahi i kahi kūlana honua i ka hoʻokele honua.

No ka laʻana, ʻo ka noiʻi ʻana e pili ana i ka hana electrocatalytic oxidation o nā molekole organik liʻiliʻi e like me ka methanol, formaldehyde, a me ka formic acid, hiki ke hoʻohana ʻia i nā wahie e nā nano platinum catalysts ka mea nui o ka noiʻi theoretical kumu a me nā manaʻo noi ākea. Ua hōʻike ʻia nā haʻawina ʻo nā catalysts nui me kekahi mau hana electrocatalytic oxidation no nā molekole organik liʻiliʻi ka hapa nui o nā metala hanohano o ka hui platinum.

Hoʻokumu ʻia ʻo Hongwu Nano i ka hana ʻana i nā mea metala makamae nano ma luna o 15 mau makahiki, e komo pū me ka platinum nano, iridium, ruthenium, rhodium, kālā, palladium, gula. Hāʻawi maʻamau ia i ka pauka, hiki ke hoʻopili ʻia ka dispersion, a hiki ke hoʻoponopono ʻia ka nui o nā ʻāpana e like me nā koi kikoʻī.

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