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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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Recent studies have been reported the presence of Endocrine Disrupting Compounds, Pharmaceuticals and Personal Care Products (EDC/PPCPs) in surface and wastewater, which could potentially affect to the complicate behavior in coupled presence of nano-colloid particles and surfactants (adsorption, dispersion, and partitioning). In this study, the adsorption of EDC/PPCPs by Single Walled Carbon Nanotubes (SWNTs) as a representative of nano-particles in cationic surfactant solutions were investigated. Hydrophobic interactions (${\pi}-{\pi}$ Electron Donor-Acceptor) have been reported as a potential adsorption mechanisms for EDC/PPCPs onto SWNTs. Generally, the adsorptive capacity of the relatively hydrophobic EDC/PPCPs onto SWNTs decreased in the presence of cationic surfactant (Cetyltrimethyl Ammonium Bromide, CTAB). This study revealed that the competitive adsorption occurred between CTAB cations and EDC/PPCPs by occupying the available SWNT surface (CTAB adsorption onto SWNTs shows five-regime and maximum adsorption capacity of 370.4 mg/g by applying the BET isotherm). The adsorption capacity of $17{\alpha}$-ethinyl estradiol (EE2) on SWNT showed the decrease of 48% in the presence of CTAB. However, the adsorbed naproxen (NAP) surely increased by forming hemimicelles and resulted in a favorable media formation for NAP partition to increase SWNTs adsorption capacity. The adsorbed NAP increased from 24 to 82.9 mg/g after the interaction of CTAB with NAP. The competitive adsorption for EDC/PPCPs onto SWNTs is likely to be a key factor in the presence of cationic surfactant, however, NAP adsorption showed a slight competition through $CH_3-CH_3$ interaction by forming hemimicelles on SWNT surface.
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참고문헌 (14)
참고문헌 신청
D. Kim / 2006 / Polymeric Carbon Nanotube Nanocomposites / The Korean Society of Industrial and. Engineering Chemistry 9(2):3~13
K, Park / 2004 / Chemisorption of fluorine atoms on singlewalled carbon nanotubes
S. Lee / 2010 / Adsorption and desorption characteristics of VOCs on chemically treated single-walled carbon nanotubes
S. Lee / 2007 / Noncovalent Functionalization of Carbon Nanotubes / Polymer Science and Technology 18(6):522~527
K Jung / 2013 / Adsorption Characteristics of NOM by Carbon Based Nanomaterials
K, Park / 2004 / Chemisorption of fluorine atoms on singlewalled carbon nanotubes
S. Lee / 2010 / Adsorption and desorption characteristics of VOCs on chemically treated single-walled carbon nanotubes
S. Lee / 2007 / Noncovalent Functionalization of Carbon Nanotubes / Polymer Science and Technology 18(6):522~527
K Jung / 2013 / Adsorption Characteristics of NOM by Carbon Based Nanomaterials
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