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
中科院分区:
文献类型:
--
作者:
Li, Qin;Gao, Wenbin;Zhang, Xiaopeng;Liu, Haitao;Dou, Meiling;Zhang, Zhengping;Wang, Feng
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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