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中国颗粒学会超微颗粒专业委员会第五届年会暨海峡两岸纳米颗粒学术研讨会

作者：陳文章呂博文張自華徐俊旭鄧茂華 Department of Chemical Engineering Yunlin University of Science and Technology Department of Geology Sciences Taiwan University

Graphitic encapsulation of ferromagnetic materials,e.g.,Fe,Co,and Ni,has attracted the research interest because of their unique physical and chemical *** this study,graphitically encapsulated Fe nanocrystals(Nano C-Fe) were synthesized by arc discharge method and mixed with ferricyanide(Ferri).An amperometric glucose biosensor constructed by depositing glucose oxidase(GOD) and Ferri-Nano C-Fe mixture onto the screen-printed carbon electrodes(SPCEs) was *** modified processes of the SPCEs and the electrochemical characteristics were analyzed by cyclic voltammetry(CV), chronoamperometry(CA) and electrochemical impedance spectroscopy(EIS).Results showed that addition of Nano C-Fe can effectively reduce the electron transfer resistance(R) and increase the redox peak *** addition,the optimal applied potential for glucose measurements was 0.4 V and the biosensor demonstrated a wide linear response range(25—600 mg/dL),high sensitivity(0.084μA dL/mg) and a lower detection limit (5.7 mg/dL).

关键词： glucose biosensor screen-printed carbon electrodes graphy-encapsulated Fe nanocrystals

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Rapid detection of organophosphorus pesticide residue on Prussian blue modified dual-channel screen-printed electrodes combing with portable potentiostat

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Chinese Chemical Letters 2018年第9期29卷 1379-1382页

作者： Qianwei Shi Yuanjie Teng Yuchao Zhang Wenhan Liu State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology College of Chemical Engineering Zhejiang University of Technology

A novel electrochemical method for the rapid detection of organophosphorus pesticide residues was realized on a dual-channel screen-printed electrode （DSPE） that was integrated with a portable smartphone-controlled potentiostat. The two carbon working channels of DSPE were first modified by electrodepositing of Prussian blue. The channels were then modified with acetylcholinesterase （ACHE） via Nation. The inhibition ratio of AChE was detected by comparing the electrical current of acetylthiocholine （ATCh） that was catalyzed by the enzyme electrodes with （channel 1） and without （channel 2） organophosphorus pesticide. Inhibition ratios were related with the negative logarithm of the organophosphorus pesticide （trichlorfon, oxamyl, and isocarbophos） concentrations at optimum experimental conditions （pH 6.9 of electrolyte, 0.2V working potential, 2.5μL AChE modification amount, and 15 min inhibition time）. The linear equations were 1%=32.301gC＋ 253.3 （R=0.9750） for isocarbophos, I% = 35.991gC＋ 270.1 （R = 0.9668） for chlorpyrifos, and 1% = 33.701gC＋ 250.5 （R = 0.9606） for trichlorfon. The detection limits were calculated as 10-7 g/mL. Given that the inhibition ratios were only related with pesticide concentration and not with pesticide species, the proposed electrodes and electrometer can rapidly detect universal organophosphorus pesticides and assess pesticide pollution.

关键词： Pesticide residue Rapid detection Electrochemical method screen-printed carbon electrodes Portable potentiostat

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Gold Nanoparticles/Thermochromic Composite Film on screen-printed electrodes for Simultaneous Detection of Protein and Temperature

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Journal of Biomaterials and Nanobiotechnology 2021年第2期12卷 7-19页

作者： Dorothy Araba Yakoba Agyapong Hanjia Jiang Xingjia Ni Jingwen Wu Hongjuan Zeng School of Life Science and Technology University of Electronic Science and Technology of China Chengdu China Biomedical Engineering Program Kwame Nkrumah University of Science and Technology Kumasi Ghana

In this study, gold nanoparticles and thermochromic composite films modified screen-printed carbon electrodes (TM-AuNPsSPCEs) were developed as a platform for the simultaneous detection of protein and temperature. The TM-AuNPs composited film had better sensitivity resulting from the gold nanoparticles amplification effect. A phase transition model analysis of TM-AuNPs films found that the TM-AuNPs films had three-phase transition intervals (80℃) which accommodated the temperature requirements for protein denaturation. When used to detect different concentrations of haemoglobin (Hb) solution, the TM-AuNPs modified SPCEs had a better sensitivity in detecting the different concentrations in comparison to TM and AuNP modified SPCEs which showed no clear sensitivity towards the different Hb concentrations. The dual detection and excellent sensitivity show a good application prospect for the study of the TM-AuNPs composite film.

关键词： screen-printed carbon electrodes Gold Nanoparticles Thermochromic Material Simultaneous Detection of Proteins and Temperature

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An Amperometric Glucose Biosensor Based on Multi-walled carbon Nanotubes-deposited SPCES

An Amperometric Glucose Biosensor Based on Multi-walled Carb...

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中国颗粒学会2006年年会暨海峡两岸颗粒技术研讨会

作者：陈文章徐俊旭吕博文林鸿明 Department of Chemical Engineering Yunlin University of Science and Technology DouliouYunlin 64002China Department of Materials Engineering Tatung University Taipei 104China

In this study, an amperometric glucose biosensor was successfully constructed by depositing glucose oxidase (GOD) and the ferricyanide (Ferri)-multi-walled carbon nanotubes (MWCNTs) mixture onto the screen-printed carbon electrodes (SPCEs). MWCNTs were acid treated with the concentrated HNO3/H2SO4 (1:1) mixed solution, and Ferri was used as the electron mediator. The modified processes of the SPCEs and the related electrochemical characteristics were analyzed by cyclic voltammetry (CV), chronoamperometry (CA) and electrochemical impedance spectroscopy (EIS). Results showed that the optimum working potential for glucose measurements was 0.3 V, and the biosensor demonstrated a wide linear response range (2500 mg/dL) and high sensitivity (0.096 μA·dL/mg).

关键词： glucose biosensor multi-walled carbon nanotubes screen-printed carbon electrodes

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