Preparation and Characterization of Carbon Nanospheres Using Sugar as a Precursor

2019 ◽  
Vol 796 ◽  
pp. 11-16
Author(s):  
Suriani Ibrahim ◽  
Lee Qi ◽  
Shaifulazuar Rozali ◽  
Nik Nazri Nik Ghazali ◽  
Tuan Zahari Tuan Zaharinie ◽  
...  

A carbon nanosphere has been used in various applications such as supercapacitors, lithium batteries, fuel cells and catalyst carriers due to their outstanding properties. The precursors commonly used to synthesize carbon nanospheres are methane, polymer and alginate solution. These precursors come from fossil fuels which are non-renewable resources where future access is limited. Hence, alternatives of renewable natural resources to develop carbon-based precursors should be studied. The aim of this work is to study properties of carbon nanospheres synthesized from sugar by using chemical reduction method. The surface morphology of mesoporous carbon nanospheres were observed by field emission scanning electron microscopy (FESEM) and the expected elemental composition by energy dispersive X-ray (EDX) analysis. The FESEM images showed carbon nanospheres having irregular spherical nanostructures with a range of diameter from 84.04 – 834.86 nm. The formation of carbon nanospheres with highly carbon content can be observed from EDX spectrum.

2014 ◽  
Vol 670-671 ◽  
pp. 26-29
Author(s):  
Zhi Long Pan ◽  
Shi Liang Ao ◽  
Jian Ping Jia

Oxide free Tin nanoparticles were synthesized from a chemical reduction method. Their morphological and thermal characterizations were studied in this paper. The X-ray diffraction (XRD) study showed that no oxides of Tin nanoparticles were formed. The thermal characterization by differential scanning calorimetry (DSC) exhibited the size dependency of the melting points. The melting point was as low as 202.16°C.


2013 ◽  
Vol 328 ◽  
pp. 729-733
Author(s):  
Kun Xiang ◽  
Mei Juan Li ◽  
Dao Ren Gong ◽  
Qiang Guo Luo ◽  
Qiang Shen

Three-dimensional (3D) flowerlike CuO structures were prepared successfully by reducing copper chloride (CuCl2·2H2O) aqueous solution in the presence of cetyltrimethylammonium bromide (CTAB). The as-prepared CuO structures were characterized by UV-Vis, X-ray powder diffraction (XRD), FESEM and EDS techniques. The flowerlike CuO structures consisted of Salix leaf-like nanostructures. A possible growth mechanism for the formation of 3D flowerlike CuO structure was proposed. The processes of ripening and directed growing of nanoparticles were most important factors to obtain the 3D flowerlike CuO structures.


2011 ◽  
Vol 82 (2) ◽  
pp. 513-517 ◽  
Author(s):  
Zaheer Khan ◽  
Shaeel Ahmed Al-Thabaiti ◽  
Abdullah Yousif Obaid ◽  
A.O. Al-Youbi

2008 ◽  
Vol 40 (10) ◽  
pp. 3183-3186 ◽  
Author(s):  
M.A.S. Sadjadi ◽  
Babak Sadeghi ◽  
M. Meskinfam ◽  
K. Zare ◽  
J. Azizian

2013 ◽  
Vol 750-752 ◽  
pp. 1071-1074
Author(s):  
Hui Xia Feng ◽  
Bai Yi Chen ◽  
De Yi Zhang ◽  
Jian Qiang Zhang ◽  
He Ming Luo

Fe3O4-coated microsilica composites were synthesized by a novel method. The struction like precursor Fe3O4 nanoparticles as the shell and microsillica as the core for the composite has been prepared by chemical reduction method. The Fe3O4-coated microsilica composite presents a saturation magnetization value of 38.03 emu/g, which is sufficient to complete magnetic separation. The synthesized magnetic composites are characterized by X-ray diffractometer (XRD), transmission electron microscope (TEM) and vibrating sample magnetometer (VSM). The results indicated that Fe3O4 nanoparticles successfully coated on microsilica.


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