Mesoporous NiO nanosphere: a sensitive strain sensor for determination of hydrogen peroxide.

Mesoporous NiO nanosphere: a sensitive strain sensor for determination of hydrogen peroxide.
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介孔氧化镍纳米球:用于测定过氧化氢的灵敏应变传感器

DOI:
10.1039/c8ra01313f
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发表时间:
2018-04-09
期刊:
影响因子:
3.9
通讯作者:
Wang, Feng
Wang, Feng
中科院分区:
化学3区
文献类型:
--
作者:
Li, Qin;Gao, Wenbin;Zhang, Xiaopeng;Liu, Haitao;Dou, Meiling;Zhang, Zhengping;Wang, Feng

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探索灵敏可靠的过氧化氢(H2 O2)测定方法是解决健康和环境问题的关键。在这里,我们展示了一个简单的,但合理的和有效的溶剂热的方法来合成分级NiO介孔纳米球(NiO-MNS)作为一个有效的非酶传感器对H2 O2检测。由于聚乙二醇对Ni(OH)2中间体的插层和稳定作用,煅烧处理后的NiO介孔纳米球(NiO-MNS)与具有大比表面积和丰富介孔的低维纳米NiO块体一致。所制备的NiO-MNS传感器具有上级电化学性能,灵敏度高(236.7 μA mM−1 cm−2),检测限低(0.62 μM),具有良好的选择性和可靠性,可用于H2 O2的检测。此外,通过原位测量得到的介孔形成机理也为今后电化学器件及其他应用领域的多孔材料的设计提供了有价值的指导。
Exploring the sensitive and reliable methods for the determination of hydrogen peroxide (H2O2) is a crucial issue for the health and environmental challenges. Herein, we demonstrate a facile, but rational and effective solvothermal approach to the synthesis of hierarchical NiO mesoporous nanospheres (NiO-MNS) as an effective non-enzymatic sensor towards the H2O2 detection. Owing to the intercalation and stabilization effect of polyethylene glycol for the Ni(OH)2 intermediate, the NiO mesoporous nanosphere (NiO-MNS) product is consistent with the low-dimensional nanostructured NiO blocks with large surface area and plentiful mesopores after the calcination treatment. The obtained NiO-MNS sensor presents superior electrochemical performance with a high sensitivity (236.7 μA mM−1 cm−2) and low limit of detection (0.62 μM), as well as the good selectivity and reliability for the further application of H2O2 detection. In addition, the unraveling mechanism of the mesopores formation derived from the in situ measurements also offers the valuable guidance for the future design of porous materials for electrochemical devices and other applications.
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