I ka pōʻino o ke kaiapuni, ʻoi aku ka nui o ka nānā ʻana o nā kānaka i ka mālama ʻana i ke kaiapuni.Paʻakikī kekahi mau ʻano hana hoʻomaʻemaʻe wai kūlohelohe e hoʻokō i nā pono hoʻomohala ma muli o ka nui o nā huahana, paʻakikī ma hope o ka mālama ʻana, ka pollution lua a me nā palena ʻē aʻe.Ua loaʻa i ka ʻenehana Photocatalytic oxidation ka manaʻo nui no kāna mau mea maikaʻi loa e like me ka hoʻohana ʻana i ka ikehu haʻahaʻa, nā ʻano hoʻonā haʻahaʻa, ka hana maʻalahi, ʻaʻohe pollution lua. 

ʻO ka semiconductor photocatalysis ʻo ia ka mea e hoʻohua ai ka semiconductor catalyst i nā pālua electron-hole ma lalo o ka hana o ke kukui ʻike ʻia a i ʻole ke kukui ultraviolet.ʻO ka O₂, H₂O a me nā molekele pollutant i hoʻopili ʻia ma ka ʻili semiconductor e ʻae i nā electrons i hana ʻia i ke kiʻi a i ʻole nā ​​lua, a loaʻa ke ʻano o nā hopena redox.He ala photochemical ia e hoʻohaʻahaʻa i nā mea haumia ʻawaʻawa i nā mea ʻawaʻawa ʻole a i ʻole nā ​​​​mea ʻona liʻiliʻi.Hiki ke hana ʻia kēia ʻano hana ma ka lumi wela, hiki ke hoʻohana i ka lā, loaʻa ka laulā o nā kumu catalyst, maʻalahi, ʻaʻohe mea ʻawaʻawa, kūpaʻa, a me ka hoʻohana hou ʻana, ʻaʻohe pollution lua a me nā pono ʻē aʻe.I kēia manawa, ʻo ka hapa nui o nā photocatalysts e hoʻohaʻahaʻa i nā mea haumia organik he mau mea semiconductor N-type, e like me TiO.₂, ZnO, CdS, WO, SnO₂, Fe₂O₃, etc.

I nā makahiki i hala iho nei, ma ke ʻano he ala kūpono, ʻo ka ʻenehana photocatalytic ka hopena maikaʻi o ka mālama ʻana i nā mea haumia kaiapuni.Ma waena o lākou, ua lilo ka semiconductor heterogeneous photocatalysis i ka ʻenehana hou loa no ka mea hiki iā ia ke hoʻopau a hoʻohaʻahaʻa i nā ʻano mea like ʻole a me nā mea ʻole i loko o ka ea haumia a me ka wai ʻino.Hiki i kēia ʻenehana ke hoʻohaʻahaʻa loa i nā mea haumia he nui i CO₂, H₂ʻO, C1-, P043- a me nā meaʻokoʻa ʻē aʻe, e hōʻemi nui i ka nui o nā mea olaola (TOC) o ka ʻōnaehana;nui nā mea haumia ʻole e like me CN-, NOx, NH₃, H₂Hiki ke hoʻohaʻahaʻa ʻia ʻo S, etc. ma o nā hopena photocatalytic.

Ma waena o nā kiʻi kiʻi semiconductor he nui, ʻo ka titanium dioxide a me ka nano cuprous oxide ka mea nui o ka noiʻi photocatalysis ma muli o ko lākou ikaika oxidizing ikaika, kiʻekiʻe catalytic hana, a me ka paʻa maikaʻi.Manaʻo ka poʻe akamai he nui ʻo Cu₂Loaʻa iā O nā manaʻo noi maikaʻi i ka degradation photocatalytic o nā mea haumia organik, a ua manaʻo ʻia e lilo ia i hanauna hou o nā kiʻi semiconductor photocatalysts ma hope o ka titanium dioxide.Cu₂Loaʻa iā O nano nā waiwai kemika paʻa a me ka mana oxidizing ikaika ma lalo o ka hana o ka lā, hiki iā ia ke hoʻopau loa i nā mea haumia i loko o ka wai e hana i ka CO.₂a me H₂O. Nolaila, nano Cu₂Ua kūpono ʻo O no ka hoʻomaʻamaʻa holomua ʻana i nā wai ʻōpala wai waihoʻoluʻu.Ua hoʻohana nā mea noiʻi i ka nano Cu₂O photocatalytic degradation o ka methylene blue, etc., a loaʻa nā hopena maikaʻi. 

I nā makahiki i hala iho nei,nā nanoparticles cuprous oxideua hoʻohana nui ʻia i ka hoʻomaʻemaʻe ʻana i ka wai a me nā ʻenehana hoʻomaʻemaʻe.Ke hoʻohālikelike ʻia me nā ʻenehana mālama wai maʻamau, loaʻa iā lākou nā pōmaikaʻi o ka hoʻokō kiʻekiʻe kiʻekiʻe, ke kumu kūʻai haʻahaʻa, kūpaʻa a me ka hoʻohana ʻana i ka lā, a loaʻa iā lākou nā kūlana maikaʻi a ākea.TiO₂hoʻohana mau ʻia no ka mālama ʻana i ka lepo e ka lā.Eia naʻe, pono kēia mea i ka hoʻoulu ultraviolet a he nui nā drawbacks.No laila, ʻo ke kukui ʻike ʻia ma ke ʻano he kumu ikehu māmā no ka hoʻomaʻemaʻe ʻana i ka wai ka pahuhopu i ʻimi ʻia e nā ʻepekema.

ʻO Guangzhou Hongwu Material Technology Co., Ltd. he lako paʻa paʻa o ka cuprous oxide (Cu2O) nanoparticles i nā pūʻulu me nā hale kūʻai kūʻai pololei, hōʻoia maikaʻi, a me ke kumu kūʻai maikaʻi.Manaʻo ʻo Hongwu Nano e hana pū me ʻoe.