TY - JOUR

T1 - Self-cleaning photoactive cotton fabric modified with nanocrystalline TiO2 for efficient degradation of volatile organic compounds and DNA contaminants

AU - Solovyeva, Maria

AU - Selishchev, Dmitry

AU - Cherepanova, Svetlana

AU - Stepanov, Grigory

AU - Zhuravlev, Evgeny

AU - Richter, Vladimir

AU - Kozlov, Denis

PY - 2020/5/15

Y1 - 2020/5/15

N2 - In this paper, we describe the chemical engineering aspects of the preparation of highly active and stable photocatalytic textiles and show several examples of the application of these materials for the efficient degradation of harmful volatile organic compounds (VOCs) and adverse macromolecules, namely, deoxyribonucleic acid (DNA) contaminants. The photoactive textiles were obtained by the impregnation method. Titanium(IV) oxysulfate and titanium(IV) isopropoxide were used as the precursors of TiO2 and were hydrolyzed under different conditions. The effect of the preparation conditions on the photocatalytic activity of the materials was investigated. The addition of nanocrystalline TiO2 to the impregnating compound during the synthesis substantially increased the photocatalytic activity of the materials. As a result, we proposed a technique for the modification of cotton fabric using titanium(IV) isopropoxide and nanocrystalline TiO2, which allowed the production of textiles with high stability toward washing and with photocatalytic activity similar to the activity of powdered TiO2 photocatalysts. The complete oxidation of VOCs with the formation of carbon oxides and water as the final oxidation products was detected on the surface of synthesized textiles under UV light. In the case of an S-containing pollutant, deactivation of the material was observed during long-term oxidation, but as an advantage over powdered photocatalysts, the textile material could be easily reactivated by simple washing. Additionally, in this paper, we show using the polymerase chain reaction (PCR) technique the ability of photoactive textiles to decompose human genomic DNA contaminants under UV light.

AB - In this paper, we describe the chemical engineering aspects of the preparation of highly active and stable photocatalytic textiles and show several examples of the application of these materials for the efficient degradation of harmful volatile organic compounds (VOCs) and adverse macromolecules, namely, deoxyribonucleic acid (DNA) contaminants. The photoactive textiles were obtained by the impregnation method. Titanium(IV) oxysulfate and titanium(IV) isopropoxide were used as the precursors of TiO2 and were hydrolyzed under different conditions. The effect of the preparation conditions on the photocatalytic activity of the materials was investigated. The addition of nanocrystalline TiO2 to the impregnating compound during the synthesis substantially increased the photocatalytic activity of the materials. As a result, we proposed a technique for the modification of cotton fabric using titanium(IV) isopropoxide and nanocrystalline TiO2, which allowed the production of textiles with high stability toward washing and with photocatalytic activity similar to the activity of powdered TiO2 photocatalysts. The complete oxidation of VOCs with the formation of carbon oxides and water as the final oxidation products was detected on the surface of synthesized textiles under UV light. In the case of an S-containing pollutant, deactivation of the material was observed during long-term oxidation, but as an advantage over powdered photocatalysts, the textile material could be easily reactivated by simple washing. Additionally, in this paper, we show using the polymerase chain reaction (PCR) technique the ability of photoactive textiles to decompose human genomic DNA contaminants under UV light.

KW - DNA contamination

KW - Nanocrystalline TiO

KW - Photoactive fabric

KW - Photocatalytic degradation

KW - Polymerase chain reaction

KW - Self-cleaning material

KW - UV

KW - TEXTILES

KW - AIR PURIFICATION

KW - NANOPARTICLES

KW - Nanocrystalline TiO2

KW - REMOVAL

KW - GAS-PHASE

KW - PHASE PHOTOCATALYTIC OXIDATION

KW - TITANIUM-DIOXIDE

KW - SURFACES

KW - WATER

UR - http://www.scopus.com/inward/record.url?scp=85078856468&partnerID=8YFLogxK

U2 - 10.1016/j.cej.2020.124167

DO - 10.1016/j.cej.2020.124167

M3 - Article

AN - SCOPUS:85078856468

VL - 388

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

SN - 1385-8947

M1 - 124167

ER -