| 钨酸铁的超声合成及表征 |
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| 引用本文： | 张晓,胡孔诚.钨酸铁的超声合成及表征[J].青岛科技大学学报,2011,32(1). |
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| 作者姓名： | 张晓 胡孔诚 |
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| 作者单位： | 青岛科技大学,化学与分子工程学院,山东,青岛,266042 |
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| 基金项目： | 青岛科技大学博士启动基金 |
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| 摘 要： | 利用乙二醇为表面活性剂,通过超声合成方法成功制备了粒径均匀、分散性良好的微米级FeWO4。利用粉末XRD、SEM及FT-IR等手段对所制备的FeWO4进行了表征。制得的FeWO4被固定在玻碳电极表面制成FeWO4/CHIT/GCE复合电极,电化学测试发现该电极能够加速Fe(Ⅲ)和Fe(Ⅱ)氧化还原对间的电子转移。进一步在该电极表面固定牛血红蛋白(Hb)后,即得到一种新型的可用于测定溶液中H2O2浓度的传感器。该传感器线性范围为5.0至460μmol·L-1,检测限为1.0μmol·L-1(3σ)。
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| 关 键 词： | 钨酸铁 超声合成 H2O2 生物传感器 |
Sonochemical Synthesis and Characterization of FeWO4 Crystals |
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| ZHANG Xiao,HU Kong-cheng.Sonochemical Synthesis and Characterization of FeWO4 Crystals[J].Journal of Qingdao University of Science and Technology:Natutral Science Edition,2011,32(1). |
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| Authors: | ZHANG Xiao HU Kong-cheng |
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| Abstract: | Narrow-size range and highly dispersed FeWO4 particles have been successfully synthesized by an ethylene glycol(EG)-assisted ultrasonic technique.The products were characterized by X-ray diffraction(XRD),field emission scanning electronic microscope(FESEM),and FT-IR spectra analysis.The obtained FeWO4 were immobilized on glass carbon electrode(GCE) to fabricate FeWO4/CHIT/GCE electrode.The electrochemical test results proved that it could enhance electron transfer for the heme Fe(Ⅲ) to Fe(Ⅱ) redox couple.The FeWO4/CHIT/GCE electrode was further immobilized with hemoglobin to fabricate a novel H2O2 sensor.The sensor showed an excellent bioelectrocatalytic activity towards H2O2 with a linear range from 5.0 to 460 μmol·L-1,and the detection limit was 1.0 μmol·L-1 at 3σ. |
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| Keywords: | H2O2 |
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