文献类型：期刊文献

中文题名：PVP-PB无机-有机复合纳米粒子修饰电极对H_2O_2的检测

英文题名：Detection of H_2O_2 with PVP-PB Inorganic-Organic Composite Nanoparticle Modified Electrode

作者：康燕[1];金雪芳[2];封科军[2]

机构：[1]华东理工大学分析测试中心,上海200237;[2]湖南大学化学生物传感与计量学国家重点实验室,湖南长沙410082

年份：2009

卷号：28

期号：6

起止页码：725

中文期刊名：分析测试学报

外文期刊名：Journal of Instrumental Analysis

收录：CSTPCD;;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：聚乙烯吡咯烷酮;普鲁士蓝;复合纳米粒子;过氧化氢;多壁碳纳米管;电化学;传感器

外文关键词：poly （vinylpyrrolidone） （PVP） ; prussian blue （ PB ） ; composite nanoparticle ; H2O2 ; multi-wall carbon nanotube（MWCNT） ; electrochemical; sensor

摘要：采用聚乙烯吡咯烷酮（PVP）保护高分散的普鲁士蓝（PB），制备了一种无机-有机复合纳米粒子（PVP-PB粒子）。将此粒子与多壁碳纳米管（MWCNT）混合成膜修饰玻碳电极，获得了一种新的电化学生物传感器。研究了不同物质的量之比的PVP和Fe^2＋反应后所得粒子修饰电极的电流响应值，结果表明，当nPVP：nFe^2＋为1：1时，修饰电极的电流响应值最强，经透射电镜测定，此时粒子粒径约为100nm.同时考察了PVP—PB和MWCNT粒子质量浓度的影响。用优化条件下得到的复合膜修饰电极对过氧化氢进行催化，其线性范围为5×10^-7～7．5×10^-3mol／L，检出限为8×10mol／L。该修饰电极对双氧水的测定显示出良好的稳定性、特异性和重复性。将此电极用于模拟工业污水中双氧水的检测，回收率为96％～103％，RSD为2．1％～3．5％，结果满意。
A kind of inorganic - organic composite nanoparticles were prepared with prussian blue （PB） under the protection of poly （vinylpyrrolidone） （PVP） polymer and different sizes of particles were obtained by varing the mole ratio of PVP and Fe^2＋. A novel hydrogen peroxide biosensor was constructed by the mixture of multi-wall carbon nanotubes（MWCNT） and the inorganic -organic composite nanoparticles modified on glassy electrode. The electrocatalytic response of electrode modified with different sizes of particles was investigated by cyclic votammetric and chronoamperometric method. The modified electrode showed a stronger current signal when using the particles with sizes of about 100 nm, which prepared with mole ratio of nPVP： nFe^2＋ of 1 ： 1. The effects of concentration of PVP- PB particles and MWCNT on the current response of modified electrode were investigated. Under the optimal conditions, the calibration showed a good linearity over the concentration of hydrogen peroxide in the range of 5 × 10^-7 ～7.5 × 10^-3 mol/L with a detection limit of 8 × 10 ^-8 mol/L. The RSD（ n = 10） for determination of 1 mmol/L H2O2 was 3.2% . The proposed method showed good stability, specificity and repeatability, and was successfully applied in the determination of hydrogen peroxide in simulative industry, waste water with recoveries of 96% -103% and RSDs of 2. 1% -3.5%.