Journal of Environmental Health Sciences (한국환경보건학회지)

Korean Society of Environmental Health (한국환경보건학회)
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Reduction of VOCs and the Antibacterial Effect of a Visible-Light Responsive Polydopamine (PDA) Layer-TiO2 on Glass Fiber Fabric

Polydopamine (PDA)-TiO2 코팅 유리섬유 직물을 이용한 VOCs의 저감 성능 및 항균성 연구

  • Park, Seo-Hyun (Environmental Technology Division, Korea Testing Laboratory) ;
  • Choi, Yein (Environmental Technology Division, Korea Testing Laboratory) ;
  • Lee, Hong Joo (Environmental Technology Division, Korea Testing Laboratory) ;
  • Park, Chan-gyu (Environmental Technology Division, Korea Testing Laboratory)
  • 박서현 (한국산업기술시험원 환경기술본부) ;
  • 최예인 (한국산업기술시험원 환경기술본부) ;
  • 이홍주 (한국산업기술시험원 환경기술본부) ;
  • 박찬규 (한국산업기술시험원 환경기술본부)
  • Received : 2021.10.26
  • Accepted : 2021.12.10
  • Published : 2021.12.31
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Abstract

Background: Indoor air pollutants are caused by a number of factors, such as coming in from the outside or being generated by internal activities. Typical indoor air pollutants include nitrogen dioxide and carbon monoxide from household items such as heating appliances and volatile organic compounds from building materials. In addition there is carbon dioxide from human breathing and bacteria from speaking, coughing, and sneezing. Objectives: According to recent research results, most indoor air pollution is known to be greatly affected by internal factors such as burning (biomass for cooking) and various pollutants. These pollutants can have a fatal effect on the human body due to a lack of ventilation facilities. Methods: We fabricated a polydopamine (PDA) layer with Ti substrates as a coating on supported glass fiber fabric to enhance its photo-activity. The PDA layer with TiO2 was covalently attached to glass fiber fabric using the drop-casting method. The roughness and functional groups of the surface of the Ti substrate/PDA coated glass fiber fabric were verified through infrared imaging microscopy and field emission scanning electron microscopy (FE-SEM). The obtained hybrid Ti substrate/PDA coated glass fiber fabric was investigated for photocatalytic activity by the removal of ammonia and an epidermal Staphylococcus aureus reduction test with lamp (250 nm, 405 nm wavelength) at 24℃. Results: Antibacterial properties were found to reduce epidermal staphylococcus aureus in the Ti substrate/PDA coated glass fiber fabric under 405 nm after three hours. In addition, the Ti substrate/PDA coated glass fiber fabric of VOC reduction rate for ammonia was 50% under 405 nm after 30 min. Conclusions: An electron-hole pair due to photoexcitation is generated in the PDA layer and transferred to the conduction band of TiO2. This generates a superoxide radical that degrades ammonia and removes epidermal Staphylococcus aureus.

Keywords

Acknowledgement

이 논문은 국토교통촉진사업 "태양광 활용 극대화 광산화/광열전환 융합촉매기반 미세먼지 전구체제거용 건설·복합재료개발(과제번호: Grant 20CTAP-C157292-01)"의 지원으로 수행되었으며, 이에 감사드립니다.

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