Synthesis and intrinsic magnetic properties of interconnected carbon micro-spheres

Wen, Jianfeng; Zhuang, Ye; Tang, Nujiang; Lü, Liya; Wang, Zhong; Du, Youwei

doi:10.1016/s1872-5805(13)60066-9

Cited by 3 publications

(1 citation statement)

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“…The G-band at 1587 cm À1 corresponds to the E 2g vibration mode of graphite and it is related to the vibration of sp 2 -bonded carbon atoms in a two-dimensional hexagonal lattice, as in a graphite layer (Nieto-Marquez et al, 2011). Combining the onion-like structure of carbon nanospheres, it is reasonable to conclude that the sphere layers have a graphitic-based structure (Wen et al, 2013). As reported by Deshmukh et al (2010), carbon spheres with diameters greater than 10 nm do not have unbroken carbon layers, but rather have a surface made of carbon graphitic flakes and these are believed to contain many dangling bonds at their edges.…”

Section: Resultsmentioning

confidence: 99%

Removal of Cr(VI) from Aqueous Solutions Using Amino‐Functionalized Carbon Nanospheres Adsorbents

Benadji

Ikkene

Boudjemaa

et al. 2018

Water Environment Research

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Carbon nanospheres were prepared and functionalized with carboxyl acid groups (CNS-CA), then reacted with 3-aminopropyltriethoxysilane to introduce amino groups onto the surface (CNS-NH 2 ) by post-synthesis grafting. CNS-NH 2 was acidified in order to convert the amino groups (-NH 2 ) into ammonium moieties (ÀNH þ 3 ). Various techniques such as N 2 physisorption, X-ray diffraction, Fourier transform infrared spectroscopy, Raman spectroscopy, thermogravimetry, X-ray photoelectron spectroscopy, and transmission electron microscopy were used to characterize the nanospheres. The removal of chromium ions from aqueous solution using CNS-NH þ 3 was investigated. Factors influencing the uptake of Cr(VI) ions such as solution pH, adsorbent dose, and initial Cr(VI) ion concentration were investigated. Equilibrium adsorption data fitted the Langmuir model very well. The adsorption maximum capacity of Cr(VI) was found to be 52.38 mg/g. The reusability of CNS-NH þ 3 results indicated that it can be reused five times successfully without loss of adsorption capacity. Water Environ. Res., 90, 1925Res., 90, (2018.

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Section: Resultsmentioning

confidence: 99%