title: Facile synthesis of functionalizated carbon nanospheres for determination of Cu2+.
abstract: In this research, quantities of carbon nanospheres (CNSs) were prepared with a convenient and low cost method at atmospheric pressure and functionalized with the xanthate group in a simple way. The materials were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), Fourier transform infrared spectra (FT-IR), and X-ray photoelectron spectroscopy (XPS). In addition, the carbon nanospheres (CNSs) xanthate was applied to fabricate a modified carbon paste electrode (CPE) for the selective and sensitive determination of Cu(2+). Also, the xanthate with a -CS2 group was applied as a chelating agent to enrich Cu(2+) in the determination of Cu(2+) ions. In square wave stripping voltammetry (SWSV), the carbon nanospheres xanthate-modified CPE displayed linear response to Cu(2+) in the concentration range of 8.0 × 10(-8) M to 2.2 × 10(-6) M with a detection limit (S/N = 3) of 3.55 × 10(-8) M. The modified electrode exhibited excellent analytical performance in terms of high repeatability. Finally, it was applied to detect Cu(2+) in the wastewater samples with high accuracy and good recovery, indicating its promising application in the routine analysis of metal ions.
authors: College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, China.
authors: Jiajia
authors: J
authors: Zhang
authors: Changming
authors: C
authors: Cheng
authors: Ying
authors: Y
authors: Huang
authors: Lei
authors: L
authors: Qian
authors: Baozhan
authors: B
authors: Zheng
authors: Hongyan
authors: H
authors: Yuan
authors: Yong
authors: Y
authors: Guo
authors: Dan
authors: D
authors: Xiao