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  • 09월 08일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제116회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Electrochemical detection of Hydrogen Peroxide using an improved nanobiointerface with catalase/CdTe quantum dots

2015년 9월 2일 14시 24분 13초
ELEC.P-551 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
10월 16일 (금요일) 13:00~14:30
저자 및
최인녕, 이용일*
창원대학교 화학과, Korea
Hydrogen peroxide detection is immense value in various fields including food, pharmaceuticals, bleaching and sterilization industries. Hence significant amount of efforts are put in towards its sensitive and selective identification. Though various methods namely ESR, chemiluminescence, spectrophotometry, chromatography, fluorescence and titrimetry are used widely but they possess several demerits. To rectify these deficits and provide available platform the rescue came in the form of electrochemical methods. Researchers put their valuable efforts initially without any interface and later with bulk interfaces. Compared to these materials the nanointerfaces play a predominant role for improving the selectivity and sensitivity. In the similar platform we have attempted the electrochemical detection of hydrogen peroxide using catalase enzyme and quantum dots as a nanointerface. Primarily quantum dots are characterized using Fourier transform infrared spectroscopy(FT-IR), Field Emission Scanning Electron Microscopy(FE-SEM) and photoluminescence(PL) for the evaluation of their characterization and morphology. Then electrochemical studies were carried out using cyclic voltammetry technique. Typical sensor parameters namely the linearity, response time, sensitivity, interference effect, reproducibility and stability were analyzed. The experimental results are found to be satisfactory with the earlier reports. This can be quite useful in the determination of hydrogen peroxide in blood serum samples which can serve as a biomarker for many of the oxidative stress related diseases. Key words: CdTe quantum dots; catalase; hydrogen peroxide; electrochemical; cyclic voltammetry.