J. Mater. Sci. Technol. ›› 2017, Vol. 33 ›› Issue (3): 246-250.
• Orginal Article • Previous Articles Next Articles
Wang Xiaojuana,Guo Xinliab*,Chen Jiana*,Ge Chuanga,Zhang Hongyia,Liu Yuanyuana,Zhao Lia,Zhang Yaoa,Wang Zengmeia,Sun Litaobc
Received:
2016-08-23
Accepted:
2016-11-03
Online:
2017-03-20
Published:
2017-05-18
Contact:
Guo Xinli,Chen Jian
Wang Xiaojuan,Guo Xinli,Chen Jian,Ge Chuang,Zhang Hongyi,Liu Yuanyuan,Zhao Li,Zhang Yao,Wang Zengmei,Sun Litao. Au nanoparticles decorated graphene/nickel foam nanocomposite for sensitive detection of hydrogen peroxide[J]. J. Mater. Sci. Technol., 2017, 33(3): 246-250.
Fig. 1. (a) UV-vis absorption spectra of AuNPs, (b) TEM image of AuNPs, (c) particle size analysis results of AuNPs, (d, e) SEM images with different magnifications of the Gr/NiF interior microstructures, (f) SEM image of the AuNPs@Gr/NiF nanocomposite.
Fig. 4. (a) CVs of AuNPs@Gr/NiF nanocomposites in N2-saturated 0.1?mol/L PBS in the presence of 1?mmol/L H2O2 at different scan rates, (b) the plot of anodic peak current (Ipa) and catholic peak current (Ipc) of H2O2 vs. the square root of scan rate (V).
Fig. 5. (a) The typical amperometric I-t curve of the AuNPs@Gr/NiF nanocomposite on successive addition of H2O2 into the stirred N2-saturated 0.1?mol/L PBS (applied potential, -0.2?V) Inset: the amperometric response time, (b) The fitting of the I-t experiment data by regression line.
Fig. 6. (a) The stability of the AuNPs@Gr/NiF nanocomposite H2O2 sensor. (b) The amperometric response on AuNPs@Gr/NiF to 1?mmol L-1 H2O2, 1?mmol?L-1 UA, 1?mmol?L-1 AA, 1?mmol?L-1 glucose in 0.1?mol ?L-1 PBS (pH?=?7.4) at a working potential of -0.2?V.
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