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Advanced removal of C. famata in bioaerosols by simultaneous adsorption and photocatalytic oxidation of Cu-doped TiO2/PU under visible irradiation.

ABSTRACT: Polyurethane (PU), a honeycomb structure material, was used as a substrate onto which TiO2 and Cu-TiO2 were deposited in order to integrate the adsorption property to the photocatalysts. TiO2 deposited on PU (TiO2/PU) and Cu-doped TiO2 deposited on PU (Cu-TiO2/PU) were synthesized and applied to the removal of Candida famata (C. famata), a frequently encountered airborne yeast. The removal capacities of C. famata by PU, TiO2/PU and Cu-TiO2/PU were 1.5 × 105, 3.2 × 105 and 6.9 × 105 (CFU/cm3) under dark condition and 1.5 × 105, 3.3 × 105 and 1.8 × 106 (CFU/cm3) under visible light irradiation, respectively. PU and TiO2/PU seemed to exhibit only an adsorption ability for removing C. famata in aerosols under both dark and visible light. The C. famata removal capacity of Cu-TiO2/PU under visible light was increased 2.6-fold compared to that under dark condition. This significant increase was attributed to the Cu dopant, which enhanced the electron-hole separation efficiency and capacity of TiO2, resulting in the high photocatalytic activity of Cu-TiO2/PU under visible light.

SUBMITTER: Pham TD 

PROVIDER: S-EPMC7108340 | biostudies-literature | 2016 Feb

REPOSITORIES: biostudies-literature

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Advanced removal of <i>C. famata</i> in bioaerosols by simultaneous adsorption and photocatalytic oxidation of Cu-doped TiO<sub>2</sub>/PU under visible irradiation.

Pham Thanh-Dong TD   Lee Byeong-Kyu BK  

Chemical engineering journal (Lausanne, Switzerland : 1996) 20151104

Polyurethane (PU), a honeycomb structure material, was used as a substrate onto which TiO<sub>2</sub> and Cu-TiO<sub>2</sub> were deposited in order to integrate the adsorption property to the photocatalysts. TiO<sub>2</sub> deposited on PU (TiO<sub>2</sub>/PU) and Cu-doped TiO<sub>2</sub> deposited on PU (Cu-TiO<sub>2</sub>/PU) were synthesized and applied to the removal of <i>Candida famata</i> (<i>C. famata</i>), a frequently encountered airborne yeast. The removal capacities of <i>C. famata<  ...[more]

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