Pamene chilengedwe chikuwonongeka, anthu amaika chidwi kwambiri pa kuteteza chilengedwe.Njira zina zachikhalidwe zochizira madzi otayika ndizovuta kukwaniritsa zosowa zachitukuko chifukwa chazinthu zambiri, kuchiritsa kwakanthawi, kuipitsidwa kwachiwiri ndi zolephera zina.Ukadaulo wa Photocatalytic oxidation walandira chidwi chowonjezereka chifukwa cha zabwino zake zazikulu monga kugwiritsa ntchito mphamvu pang'ono, kutsika pang'ono, magwiridwe antchito osavuta, komanso kusaipitsa kwachiwiri. 

Semiconductor photocatalysis imatanthawuza kuti chothandizira cha semiconductor chimapanga ma electron-hole awiriawiri pansi pa kuwala kowonekera kapena kuwala kwa ultraviolet.The O₂, H₂O ndi mamolekyu oipitsa omwe adsorbed pamtunda wa semiconductor amavomereza ma elekitironi opangidwa ndi zithunzi kapena mabowo, ndipo machitidwe angapo a redox amapezeka.Ndi njira yotereyi yopangira ma photochemical kuti awononge zowononga zapoizoni kukhala zinthu zopanda poizoni kapena zopanda poizoni.Njirayi ikhoza kuchitidwa pa kutentha kwa chipinda, ingagwiritse ntchito kuwala kwa dzuwa, imakhala ndi zinthu zambiri zothandizira, ndi zotsika mtengo, zopanda poizoni, zokhazikika, komanso zogwiritsidwa ntchito, zopanda kuipitsidwa kwachiwiri ndi zina zabwino.Pakadali pano, ma photocatalysts ambiri omwe amawononga zowononga zachilengedwe ndi zida zamtundu wa N-semiconductor, monga TiO.₂, ZnO, CdS, WO, SnO₂, Fe₂O₃, ndi zina.

M'zaka zaposachedwa, monga njira yothandiza, ukadaulo wa photocatalytic uli ndi zotsatira zabwino zochizira pazowononga zachilengedwe.Pakati pawo, semiconductor heterogeneous photocatalysis yakhala teknoloji yatsopano yochititsa chidwi kwambiri chifukwa imatha kusokoneza ndi kuwononga zinthu zosiyanasiyana zamoyo ndi zowonongeka mu mpweya woipitsidwa ndi madzi oipa.Tekinoloje iyi imatha kutsitsa zowononga zambiri kukhala CO₂, H₂O, C1-, P043- ndi zinthu zina zopanda organic, kuchepetsa kwambiri organic content (TOC) ya dongosolo;zoipitsa zambiri zakuthupi monga CN-, NOx, NH₃, H₂S, ndi zina zotero zithanso kunyozedwa kudzera muzochita za photocatalytic.

Pakati pa ma semiconductor photocatalysts ambiri, titanium dioxide ndi nano cuprous oxide nthawi zonse zakhala pachimake pa kafukufuku wa photocatalysis chifukwa cha mphamvu zawo zamphamvu za okosijeni, zochitika zapamwamba zothandizira, komanso kukhazikika kwabwino.Akatswiri ambiri amakhulupirira kuti Cu₂O ali ndi chiyembekezo chogwiritsa ntchito bwino pakuwonongeka kwa zowononga zachilengedwe, ndipo akuyembekezeka kukhala m'badwo watsopano wa ma semiconductor photocatalysts pambuyo pa titanium dioxide.Ku₂O nano ali ndi mphamvu zokhazikika zamakina komanso mphamvu zotulutsa oxidizing pansi pa kuwala kwa dzuwa, zomwe zimatha kutulutsa zowononga zachilengedwe m'madzi kuti zipange CO.₂ndi H₂O. Chifukwa chake, nano Cu₂O ndi yabwino kwambiri pamankhwala apamwamba amadzi otayira utoto osiyanasiyana.Ofufuza agwiritsa ntchito nano Cu₂O photocatalytic kuwonongeka kwa methylene buluu, etc., ndipo anapeza zotsatira zabwino. 

Mzaka zaposachedwa,cuprous oxide nanoparticlesakhala akugwiritsidwa ntchito kwambiri pazamankhwala amadzi onyansa komanso matekinoloje oyeretsa.Poyerekeza ndi njira zamakono zoyeretsera madzi, ali ndi ubwino wokhala ndi mphamvu zambiri, zotsika mtengo, zokhazikika komanso zogwiritsa ntchito kuwala kwa dzuwa, ndipo ali ndi chiyembekezo chabwino komanso chachikulu.TiO₂nthawi zambiri amagwiritsidwa ntchito poyeretsa zimbudzi ndi kuwala kwa dzuwa.Komabe, mankhwalawa amafunikira kuyatsa kwa ultraviolet ndipo ali ndi zovuta zambiri.Chifukwa chake, kuwala kowoneka ngati gwero lamphamvu lamagetsi opangira zimbudzi nthawi zonse kwakhala cholinga chotsatiridwa ndi asayansi.

Guangzhou Hongwu Zofunika Technology Co., Ltd. ali yaitali khola kotunga cuprous okusayidi (Cu2O) nanoparticles mu magulu ndi malonda fakitale mwachindunji, chitsimikizo khalidwe, ndi mtengo wabwino.Hongwu Nano akuyembekeza kugwirizana nanu.