Lee, Jaesang Hong, Seokwon Mackeyev, Yuri Lee, Changha Chung, Eunhyea Wilson, Lon J. Kim, Jae-Hong Alvarez, Pedro J. J. 2024-01-20T16:00:56Z 2024-01-20T16:00:56Z 2021-09-05 2011-12 0013-936X https://pubs.kist.re.kr/handle/201004/129762 We recently reported that C-60 aminofullerenes Sunlight immobilized on silica support (aminoC(60)/silica) efficiently produce singlet oxygen (O-1(2)) and inactivate virus and bacteria under visible light irradiation.(1) We herein evaluate this new photocatalyst for oxidative degradation of 11 emerging organic contaminants, including pharmaceuticals such as acetaminophen, carbamazepine, cimetidine, propranolol, ranitidine, sulfisoxazole, and trimethoprim, and endocrine disruptors such as bisphenol A and pentachlorophenol. Tetrakis aminoC(60)/silica degraded pharmaceuticals under visible light irradiation faster than common semiconductor photocatalysts such as platinized WO3 and carbon-doped TiO2. Furthermore, aminoC(60)/silica exhibited high target-specificity without significant interference by natural organic matter. AminoC(60)/silica was more efficient than unsupported (water-suspended) C-60 aminofullerene. This was attributed to kinetically enhanced O-1(2) production after immobilization, which reduces agglomeration of the photocatalyst, and to adsorption of pharmaceuticals onto the silica support, which increases exposure to O-1(2) near photocatalytic sites. Removal efficiency increased with pH for contaminants with a phenolic moiety, such as bisphenol A and acetaminophen, because the electron-rich phenolates that form at alkaline pH are more vulnerable to singlet oxygenation. English American Chemical Society Photosensitized Oxidation of Emerging Organic Pollutants by Tetrakis C-60 Aminofullerene-Derivatized Silica under Visible Light Irradiation Article 10.1021/es2029944 1 Environmental Science & Technology, v.45, no.24, pp.10598 - 10604 Environmental Science & Technology 45 24 10598 10604 N scie scopus 000298118300047 2-s2.0-83455255621 Engineering, Environmental Environmental Sciences Engineering Environmental Sciences & Ecology Article RATE CONSTANTS DOPED TIO2 MOLECULAR-OXYGEN SINGLET OXYGEN PHOTOREACTIVITY PHOTOCATALYSTS RADICALS STATE FATE INACTIVATION C60 Fullerene 가시광 활성 촉매 고정화 Singlet Oxygen 신종유해물질