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| Facile Preparation of an Economic Nonenzymatic Uric Acid Sensor Based on SWNTs/Nafion/CuNPs Nanocomposites |
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| DOI： |
| KeyWord:single walled carbon nanotubes(SWNTs) uric-acid(UA) sensor copper nanoparticles(CuNPs) Nafion |
| Author | Institution |
| ZHANG Cui-zhong， LIAN Huan， HUANG Hai-feng， ZHANG Zhen-fa，LIANG Cai-yun，
MENG Mei-xiang，PENG Jin-yun* |
1.广西民族师范学院化学与生物工程系;2.广西高校桂西南特色植物资源化学重点实验室培育基地 |
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| Abstract: |
| An economic and facile preparation nonenzymatic uric acid sensor was successfully fabricated by electrodeposition of copper on SWNTs/Nafion modified glassy carbon electrode.The morphology of the material was observed by scanning electron microscopy(SEM)，and the element composition of the material was investigated by energy dispersive X-ray spectroscopy(EDX).Effects of various scan rates and pH conditions on the modified electrode were investigated.The linear range of detected UA was in the range of 0.1-1 000 μmol?L-1 and the limit of detection(LOD,S/N=3) was 0.058 5μmol?L-1.The sensor was applied in the detection of UA in human serum by the standard addition method with recoveries of 97.2%-103.9% and relative standard deviation(RSD)of 0.04%-0.11%.The results of the nonenzymatic method are highly consistent with that of the GOD-POD enzymatic method.The sensor shows the advantages of facile fabrication,high sensitivity,good stability and high reproducibility. |
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