Three-dimensional carbon foam supported NiO nanosheets as non-enzymatic electrochemical H2O2 sensors
作者：1. Minmin Liu*, Mingli An, Jiqin Xu, Ting Liu, Linlin Wang, Yuyu Liu, Jiujun Zhang
關(guān)鍵字：Three-dimensional carbon foam, Nickel oxide nanosheets, Non-enzymatic, Hydrogen peroxide, Electrochemical sensor
論文來源：期刊
具體來源：https://doi.org/10.1016/j.apsusc.2020.148699
發(fā)表時間：2021年
In this work, we successfully in situ fabricated two-dimensional (2D) nickel oxide nanosheets (NiO-NSs) uniformly grown on a three-dimensional (3D) carbon foam (CF) network by using a facile solvothermal reaction assisted with a subsequent annealing procedure. The nanoporous NiO nanosheet structures can be size-controlled by simply tuning the reaction temperature and time (90 ? C for 10 and 20 h, 120 ? C for 10 h, 180 ? C for 1 h). Among the studied composites, the obtained NiO-NSs/CF-1801 modified electrode exhibited the highest performance for non-enzymatic detecting H2O2 . It showed the lowest limit of detection (LOD = 13.03 nM) and the largest linear detection range (0.20–3.75 mM) with a sensitivity of 23.30 μ A mM ?1 cm ?2 . This excellent performance is due to the synergetic effect of 3D micron-level porous structure of carbon foam and the in-situ uniformly growth of NiO nanosheets. The present results demonstrate that NiO-NSs/CF is a promising sensing candidate for quantitative electrochemical detecting H2O2.