공업화학 (Applied Chemistry for Engineering)
- Volume 24 Issue 5
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- Pages.551-557
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- 2013
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- 1225-0112(pISSN)
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- 2288-4505(eISSN)
티올화된 탄소나노튜브 전극을 이용한 카드뮴과 납의 전기화학적 분석
Electrochemical Evaluation of Cadmium and Lead by Thiolated Carbon Nanotube Electrodes
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Yang, Jongwon
(Graduate School of Energy and Environment, Seoul National University of Science and Technology) ;
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Kim, Lae-Hyun
(Graduate School of Energy and Environment, Seoul National University of Science and Technology) ;
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Kwon, Yongchai
(Graduate School of Energy and Environment, Seoul National University of Science and Technology)
- 발행 : 2013.10.31
초록
본 연구에서는 환경오염을 발생시키는 위험한 중금속 물질들인 카드뮴과 납의 검출 능력을 향상시키기 위해, 순수한 탄소나노튜브(p-CNT) 전극 및 티올화된 탄소나노튜브(t-CNT) 전극을 이용하여 카드뮴과 납 금속의 민감도를 평가하였다. 또한, 두 금속이 동시에 포함되어 있을 때의 상호작용 반응기작을 분석하였다. 이를 위해, 네모파 벗김전압전류법이 이용되었는데, 두 CNT 전극에서 모두 네모파 벗김전압전류법의 최적조건으로, 30 Hz의 주파수, -1.2 V vs. Ag/AgCl의 석출전위 및 300 s의 석출시간이 결정되었다. 민감도 측면에서 카드뮴과 납 모두 t-CNT 전극에서 p-CNT 전극보다 더 좋은 결과를 얻었다. 두 금속의 센서민감도를 각각 측정하였을 때, 카드뮴의 경우 p-CNT 및 t-CNT 전극에서
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