Abstract
Anatase TiO2 nanoparticles (TNPs) are synthesized using the sol-gel method and loaded onto the surface of polyester-cotton (65/35) fabrics. The nanofabrics degrade formaldehyde at an efficiency of 77% in eight hours with visible light irradiation or 97% with UV light. The loaded TNPs display very little release from nanofabrics (~0.0%) during a standard fastness to rubbing test. Assuming TNPs may fall off nanofabrics during their life cycles, we also examine the possible toxicity of TNPs to human cells. We found that up to a concentration of 220 μg/mL, they do not affect viability of human acute monocytic leukemia cell line THP-1 macrophages and human liver and kidney cells.
Highlights
Indoor air pollution is a major threat to human health
As we face ever-increasing applications of nanotechnology-based products in our daily life, a proper evaluation of their impacts on eco-environment and human health is an imperative task. We carried out such an evaluation on titanium dioxide nanoparticles (TNPs)-based nanofabrics, which are effective in photocatalytic degradation of formaldehyde in indoor environments
Very few free TNPs fall off nanofabrics after a standard rubbing test
Summary
Indoor air pollution is a major threat to human health. One potent pollutant is formaldehyde, released by most building materials and household products. TNPs introduced into the structure of polyester fabrics showed good photocatalytic activity in formaldehyde degradation under UV radiation [10]. Our vision for a future solution is to incorporate catalytic nanoparticles, such as TNPs, into fabrics used as wall coverings, curtains, and upholstery so that the catalytic degradation of formaldehyde and other organic pollutants occurs naturally and continuously. Such propertieTtshNecPdaypnnaartmbicielcesseiizsnetssiomolfuTatiNotenPsds wartaehsirndoetthueergmrhainngetedhoebfy3md0–ye5n0aamnsmuicrilenigmshtteersincleattwteoarfitnergtho(nDeLtihrSe).zaRsesetusaumltppstoisohtnoewtnheatdtiatthhle.ayt Zeta-potential measurement swheorewspehdertichaal tinTsNhaPpse, einxdhiciabtiintgedthfeadirelgyreepoofsiTtNivPeasgugrrefgaatcioenpwoatsenmtiniaolrs(Tinablsete1r).ilTehewater, showing that they wereerleecltraotsitvateiclyansdtaelbeclteroidnynaamquiceporoupserstioesluoftinoanno(pTaratibcllees 1de)t.erImninceetlhlecirusltatubirliety minesdoliuutimon., there are 10% fetal bovine prSmouectahesiupnrresomp. The incorporation of TNPs into fabrics was observed by their SEM images (Figure 2) These results demonstrate that photocatalyst TNPs were successfully incorporated into polyester-cotton nanofabrics. STEhMeseimresaugletss (dFeimguornest2r)a.teTthheasteprheostuolctsatdaleymstoTnNstPrastewtehraetspuhccoetsoscfautlalylyisntcTorNpPorsawteedreinstuocpcoeslysefustlelyr-cinotctoornponraantoefdabirnitcos pfoorlyaiersctelera-cnointtgonwnhailneopfraebsreircvsinfogrtahierirclreeagnuinlagr wfuhnicletiopnre.serving their regular function
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
