J. Mater. Sci. Technol. ›› 2020, Vol. 49: 42-46.DOI: 10.1016/j.jmst.2020.02.003
• Research Article • Previous Articles Next Articles
Kaili Yao, Xiaojun Tan, Bing Dai*(), Jie Bai, Qiaoyang Sun, Wenxin Cao, Jiwen Zhao, Lei Yang, Jiecai Han, Jiaqi Zhu*()
Received:
2019-07-03
Revised:
2019-11-02
Accepted:
2019-11-21
Published:
2020-07-15
Online:
2020-07-17
Contact:
Bing Dai,Jiaqi Zhu
Kaili Yao, Xiaojun Tan, Bing Dai, Jie Bai, Qiaoyang Sun, Wenxin Cao, Jiwen Zhao, Lei Yang, Jiecai Han, Jiaqi Zhu. Au nanospheres modified boron-doped diamond microelectrode grown via hydrogen plasma etching solid doping source for dopamine detection[J]. J. Mater. Sci. Technol., 2020, 49: 42-46.
Fig. 1. Schematic illustrations of making doping source with graphite and B2O3 powders (a, b); (c-e) process for the growth of BDD film; (f, g) manufacturing Au nanospheres modified BDD film.
Fig. 2. SEM images of pure BDD film (a, b) and Au nanoparticles modified BDD film (c, d) with low (a, c) and higher (b, d) magnification. The inset in (d) was EDS of Au nanoparticles modified BDD.
Fig. 5. (a) CVs of Au nanospheres modified BDD electrode in 0.1 M PBS under different scan rates: 0.02, 0.04, 0.06, 0.08, 0.1, 0.2 V s-1 in 10 μM DA; (b) Linear curves of peak currents versus square root of scan rate.
Fig. 6. (a) DPVs of Au nanospheres modified BDD electrode in 0.1 M PBS with increasing amounts of DA concentration from 5 μM to 1 mM. The inset is the magnified CPV curves in 5 and 10 μM; (b) Linear curves of peak currents versus the DA concentration.
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