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Double-shelled yolk-shell Si@C microspheres based electrochemical sensor for determination of cadmium and lead ions
Qin, DF (Qin, Danfeng)[ 1,2,3,8 ]; Chen, AR (Chen, Anran)[ 1,2 ]; Mamat, X (Mamat, Xamxikamar)[ 3 ]; Li, YT (Li, Yongtao)[ 3 ]; Hu, X (Hu, Xun)[ 4 ]; Wang, P (Wang, Ping)[ 5 ]; Cheng, H (Cheng, Hao)[ 6 ]; Dong, YM (Dong, Yemin)[ 7 ]; Hu, GZ (Hu, Guangzhi)[ 1,2,3,5 ]
2019
Source PublicationANALYTICA CHIMICA ACTA
ISSN0003-2670
Volume1078Issue:10Pages:32-41
Abstract

In this work, we report double-shelled yolk-shell Si@C structure as a high-performance electrochemical sensing material for heavy metal ions. A SiO2-assisted polybenzoxazine (PB) coating strategy is used to synthesize highly monodispersed Si@C microspheres. After thermal carbonization of PB layers and selective removal of the SiO2 layers, Si@C microspheres were prepared. The resultant Si@C microspheres exhibit uniform spherical morphology and clearly double-shelled yolk-shell structures. The obtained Si@C microspheres are employed to prepare the chemically modified electrode for the sensitive determination of Cd(II) and Pb(II). By the method of anodic stripping voltammetry, the Si@C-based electrode shows a very wide linear dynamic range for target ions (e.g., 0.5-400 mu g L-1 for Cd(II) and Pb(II)) and low limit of detections (e.g., 0.068 mu g L-1 for Cd(II) and for 0.105 m mu g L-1 Pb(II)). The remarkable results, such as excellent resistance to interference ions, good repeatability, and reproducibility were also obtained. Furthermore, compared with those Cd(II) and Pb(II) sensors known in the literature, the analytical performance of Si@C-based electrode is better. Finally, when further used to determine Cd(II) and Pb(II) in tap water and lake water, the results of fabricated electrode successfully achieve good consistency with the data obtained from inductively coupled plasma-mass spectrometry (ICP-MS).

KeywordNitrogen doping Dual yolk-shell structure Differential pulse anodic stripping voltammetry Cadmium Lead
DOI10.1016/j.aca.2019.06.011
Indexed BySCI
WOS IDWOS:000477568600005
Citation statistics
Document Type期刊论文
Identifierhttp://ir.xjipc.cas.cn/handle/365002/7099
Collection省部共建新疆特有药用资源利用重点实验室
Affiliation1.Yunnan Univ, Sch Chem Sci & Technol, Minist Educ, Key Lab Med Chem Nat Resource, Kunming 650091, Yunnan, Peoples R China
2.Yunnan Univ, Sch Energy, Kunming 650091, Yunnan, Peoples R China
3.Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Key Lab Chem Plant Resources Arid Reg, State Key Lab Basis Xinjiang Indigenous Med Plant, Urumqi 830011, Peoples R China
4.Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410004, Hunan, Peoples R China
5.Guangxi Univ Sci & Technol, Guangxi Key Lab Green Proc Sugar Resources, Liuzhou 545006, Peoples R China
6.Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Funct Mat Informat, Shanghai 200050, Peoples R China
7.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Qin, DF ,Chen, AR ,Mamat, X ,et al. Double-shelled yolk-shell Si@C microspheres based electrochemical sensor for determination of cadmium and lead ions[J]. ANALYTICA CHIMICA ACTA,2019,1078(10):32-41.
APA Qin, DF .,Chen, AR .,Mamat, X .,Li, YT .,Hu, X .,...&Hu, GZ .(2019).Double-shelled yolk-shell Si@C microspheres based electrochemical sensor for determination of cadmium and lead ions.ANALYTICA CHIMICA ACTA,1078(10),32-41.
MLA Qin, DF ,et al."Double-shelled yolk-shell Si@C microspheres based electrochemical sensor for determination of cadmium and lead ions".ANALYTICA CHIMICA ACTA 1078.10(2019):32-41.
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