ʻO nā kukuna Ultraviolet kekahi o nā mea nui o ka lā, a hiki ke māhele ʻia ko lākou mau nalu i ʻekolu mau ʻāpana. I waena o lākou, he hawewe pōkole ʻo UVC, i hoʻopaʻa ʻia a hoʻopaʻa ʻia e ka papa ozone, ʻaʻole hiki ke hiki i ka honua, ʻaʻohe hopena ʻino i ke kino o ke kanaka. No laila, ʻo UVA a me UVB i nā kukuna ultraviolet ka mea nui o ka hawewe lōʻihi e hōʻino ai i ka ʻili kanaka.

ʻO Hongwu Nanotitanium dioxide (TiO2) nanopowderhe liʻiliʻi liʻiliʻi nui, hana kiʻekiʻe, kiʻekiʻe refractive waiwai a kiʻekiʻe photoactivity. ʻAʻole hiki iā ia ke noʻonoʻo a hoʻopuehu i nā kukuna ultraviolet, akā e hoʻopili iā lākou, no laila e ʻoi aku ka ikaika o ka pale ʻana i nā kukuna UV. He pale pale pale UV kino me ka hana ʻoi aku ka maikaʻi.

ʻO ka hiki anti-UV o nano TiO2 pili i kona nui ʻāpana. I ka ≤300nm ka nui o ka nui o ka titanium dioxide nanoparticle, ʻike nui ʻia nā kukuna ultraviolet me nā lōʻihi hawewe ma waena o 190 a me 400nm; i ka manawa o ka nui o ka titania nanopowder he <200nm, ʻike nui ʻia ka pale ʻana o UV a hoʻopuehu ʻia. ʻO ka ʻōnaehana pale o ka lā o nā kukuna ultraviolet ma waena o ka nalu a me ka nalu lōʻihi he uhi maʻalahi, a nāwaliwali ka hiki ke pale i ka lā; ke hoʻonui nui ʻia ka nui o ka ʻāpana o TiO2 nano pauka ma waena o 30 a me 100nm, ʻoi aku ka maikaʻi o ka absorption o nā kukui ultraviolet i ka ʻāina hawewe waena, a ʻo ka hopena pale i nā kukuna ultraviolet. ʻAe, ʻo kāna ʻano hana pale i ka lā e komo i nā kukuna ultraviolet.

E hōʻuluʻulu,ʻāpana nano titanium dioxideLoaʻa iā ia nā ʻano hana pale lā no nā lōʻihi hawewe like ʻole o nā kukuna ultraviolet. Ke lōʻihi ka lōʻihi o ka nalu o nā kukuna ultraviolet, pili ka hana pale o ka nano titanium dioxide TiO2 i kona hiki ke hoʻopuehu; i ka wā pōkole ka nalu o nā kukuna ultraviolet, ʻo kāna hana pale e pili ana i kona hiki ke komo. ʻO ia hoʻi, ʻo ka hiki i ka nano titanium oxide ke pale i nā kukuna ultraviolet e hoʻoholo ʻia e kona mana absorption a me ka hiki ke hoʻopuehu. ʻOi aku ka liʻiliʻi o ka nui o ka nui, ʻoi aku ka ikaika o ka hiki ʻana o UV o nā pauka nano titanium dioxide.

Hōʻike nā hoʻokolohua ʻoi aku ka maikaʻi o ka nano rutile titanium dioxide TiO2 o Hongwu Nano ma mua o ka nano anatase TiO2. Loaʻa iā Nano TiO2 nā manaʻo noi maikaʻi i ka hoʻopau anti-UV o nā lole pulupulu a me nā pale anti-ultraviolet ma ke aniani insulating.