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

• 영문명: Reduction of VOCs and the Antibacterial Effect of a Visible-Light Responsive Polydopamine (PDA) Layer-TiO₂ on Glass Fiber Fabric
• 발행기관: 한국환경보건학회
• 저자명: 박서현(Seo-Hyun Park) 최예인(Yein Choi) 이홍주(Hong Joo Lee) 박찬규(Chan-gyu Park)
• 간행물 정보: 『1. 한국환경보건학회지』제47권 제6호, 540~547쪽, 전체 8쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 2021.12.31

영문 초록

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°C. 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.

목차

Ⅰ. 서 론

Ⅱ. 재료 및 방법

Ⅲ. 결과 및 고찰

Ⅳ. 결 론

감사의 글

Conflict of Interest

References

키워드

Polydopamine anti-bacterial VOC reduction photosensitive material