Nitrogen-rich core-shell structured particles consisting of carbonized zeolitic imidazolate frameworks and reduced graphene oxide for amperometric determination of hydrogen peroxide
Nitrogen-rich core-shell structured particles consisting of carbonized zeolitic imidazolate frameworks and reduced graphene oxide for amperometric determination of hydrogen peroxide
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由碳化沸石咪唑酯骨架和还原氧化石墨烯组成的富氮核壳结构颗粒，用于安培测定过氧化氢
DOI：
10.1007/s00604-018-3032-y
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发表时间：
2018-10
影响因子：
5.7
通讯作者：
Jiang Jingkun
中科院分区：
文献类型：
--
作者：
Li Zehui;Jiang Yuheng;Wang Zhuoya;Wang Wenbo;Yuan Yi;Wu Xiaoxue;Liu Xingchen;Li Mingjie;Dilpazir Sobia;Zhang Guangjin;Wang Dongbin;Liu Chenming;Jiang Jingkun
以炭化沸石咪唑酸骨架（ZIFs）和还原氧化石墨烯（rGO）为原料制备了核壳结构颗粒。这些颗粒含氮量高达10.6%。通过在热解过程中还原和团聚合适尺寸（bbb20 μm）的氧化石墨烯，避免了ZIF中氮的损失。所得的碳化ZIF@rGO颗粒沉积在玻碳电极上，作为H2O2的安培传感器，通常在−0.4 V （vs. Ag/AgCl）电压下工作。该传感器具有较宽的检测范围（5 × 10−6 ~ 2 × 10−2M），检测限为3.3 μM (S/N= 3)，灵敏度为0.272 μA·μM−1·cm−2，远高于直接碳化的zif。传感器材料也被沉积在丝网印刷电极上，以探索应用的可能性。图解：氮掺杂碳（NC）由于氮含量低而受到限制。本文描述了富氮NC@reduced氧化石墨烯（rGO）核壳结构颗粒。NC@rGO颗粒对h2o2的检测性能明显优于NC颗粒。
Core-shell structured particles were prepared from carbonized zeolitic imidazolate frameworks (ZIFs) and reduced graphene oxide (rGO). The particles possess a nitrogen content of up to 10.6%. The loss of nitrogen from the ZIF is avoided by utilizing the reduction and agglomeration of graphene oxide with suitable size (>2 μm) during pyrolysis. The resulting carbonized ZIF@rGO particles were deposited on a glassy carbon electrode to give an amperometric sensor for H2O2, typically operated at a voltage of −0.4 V (vs. Ag/AgCl). The sensor has a wide detection range (from 5 × 10−6to 2 × 10−2M), a 3.3 μM (S/N= 3) detection limit and a 0.272 μA·μM−1·cm−2sensitivity, much higher than that of directly carbonized ZIFs. The sensor material was also deposited on a screen-printed electrode to explore the possibility of application.Graphical abstractNitrogen doped carbon (NC) derived from carbonized zeolitic imidazolate frameworks is limited because of low nitrogen content. Here, nitrogen-rich NC@reduced graphene oxide (rGO) core-shell structured particles are described. The NC@rGO particles show distinctly better H2O2detection performance than NC.
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