A novel nonenzymatic hydrogen peroxide sensor based on electrospun nitrogen-doped carbon nanoparticles-embedded carbon nanofibers film
A novel nonenzymatic hydrogen peroxide sensor based on electrospun nitrogen-doped carbon nanoparticles-embedded carbon nanofibers film
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DOI：
10.1016/j.snb.2015.10.033
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发表时间：
2016-03
影响因子：
8.4
通讯作者：
Xueping Zhang;Dong Liu;Bin Yu;Tianyan You
中科院分区：
文献类型：
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作者：
Xueping Zhang;Dong Liu;Bin Yu;Tianyan You
采用静电纺丝法制备了聚吡咯纳米粒子/聚丙烯腈（PPy NPs/PAN）复合纳米纤维（NCNPFs），并将其碳化，制备了自支撑的掺氮碳纳米粒子包埋碳纳米纤维（NCNPFs）膜，以此为基础，构建了一种新型的非酶电化学传感器。具有不同PPy NPs与PAN质量浓度（重量%）的一系列NCNPFs-x样品制备了当PPy NP前体为12重量%时，大量得到的NCNPs均匀地包埋在NCNFs基质中，没有明显的聚集。所获得的NCNPF-12重量%具有较小的直径、较高的吡咯-N含量和较多的缺陷位，从而对H2 O2还原具有较高的电催化活性。NCNPF-12重量%-的H2 O2传感器在2 s内具有快速的安培响应，线性范围为5.0 × 10− 6 ~ 2.7 × 10− 2 M，灵敏度为383.9 μA μM−1cm−2。此外，该非酶传感器显示出良好的选择性，高重现性和长期稳定性。由于显着的分析性能，NCNPF-12重量%-该电化学传感器可用于人体血清和消毒剂样品中H2 O2的检测。
A novel nonenzymatic electrochemical sensor for the detection of hydrogen peroxide (H2O2) was developed based on free-standing nitrogen-doped carbon nanoparticles-embedded carbon nanofibers (NCNPFs) film, which were prepared by the carbonization of electrospun polypyrrole nanoparticles/polyacrylonitrile (PPy NPs/PAN) composite nanofibers. A series of NCNPFs-xsamples with different mass concentration of PPy NPs to PAN (wt.%) were prepared. When the PPy NPs precursor is 12 wt.%, large amount of resulting NCNPs are embedded uniformly in NCNFs substrate without obvious aggregation. The as-obtained NCNPFs-12 wt.% has smaller diameter, higher content of pyrrolic-N and more defective sites, which result in high electrocatalytic activity for H2O2reduction. The NCNPFs-12 wt.%-based H2O2sensor shows a fast amperometric response within 2 s, and a wide linear range of 5.0 × 10−6to 2.7 × 10−2M with a high sensitivity of 383.9 μA μM−1cm−2. In addition, this nonenzymatic sensor displays good selectivity, high reproducibility and long-term stability. Because of the remarkable analytical performances, the NCNPFs-12 wt.%-based electrochemical sensor shows potential applications for the detection of H2O2in human serum and disinfectant samples with satisfactory results.