THE PROPERTIES OF CADMIUM OXIDE-CARBON NANOTUBE NANOCOMPOSITE SYNTHESIZED VIA SOL-GEL METHOD

Abstract This study deals with the synthesis of some physical properties of (CdO/NiO) nanocomposite via Sol-Gel method and their antibacterial activities. The NiO and CdO nanoxides as well as the CdO/NiO oxide mixture were prepared in five samples with different concentrations where the ratio of CdO/NiO was [(1: 0), (3: 1), (1: 1), (1: 3), (0: 1)], by using the gel solution by means of a polyvinyl alcohol solution ( PVA ). The samples were platelimb at (500̊C) for three hours. The structural properties of the prepared oxides resulting from the cracking process were studied. The XRD results showed the presence of pure cadmium oxide diffraction patterns in the sample (S 1 ) as well as pure nickel oxide in the sample (S 5 ), and confirmed the presence of the CdO / NiO oxide mixture in the samples (S 2 , S 3 , S 4 ). The results of XRD also showed, through calculations, that the specific surface area increased with increasing granular size and decreased with decreasing granular size. XRD calculations also showed that the intensity of eruptions decreased as the granular volume increased and, inversely, increased with decreasing granular size.

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Preparation of carbon nanotube-containing hybrid composites from epoxy, novolac, and epoxidized novolac resins using sol–gel method

Journal of Thermal Analysis and Calorimetry ◽

10.1007/s10973-018-6992-6 ◽

2018 ◽

Vol 132 (1) ◽

pp. 513-524 ◽

Cited By ~ 11

Author(s):

Hamidreza Ebrahimi ◽

Hossein Roghani-Mamaqani ◽

Mehdi Salami-Kalajahi

Keyword(s):

Carbon Nanotube ◽

Hybrid Composites ◽

Sol Gel ◽

Gel Method ◽

Sol Gel Method ◽

Novolac Resins

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Nano-Sized Lithium Manganese Phosphate/Carbon Nanotube Composites with Enhanced Electrochemical Activity for Lithium-Ion Batteries

MRS Proceedings ◽

10.1557/opl.2012.1281 ◽

2012 ◽

Vol 1440 ◽

Author(s):

Satoru Tsumeda ◽

Scott D. Korlann ◽

Shunzo Suematsu ◽

Kenji Tamamitsu

Keyword(s):

Electron Microscope ◽

Carbon Nanotube ◽

Lithium Ion Batteries ◽

Sol Gel ◽

Lithium Ion ◽

Electrochemical Activity ◽

Gel Method ◽

Sol Gel Method ◽

Manganese Phosphate ◽

Lithium Manganese Phosphate

ABSTRACTOlivine lithium manganese phosphate, LiMnPO4 is a promising cathode material for high energy and safe lithium ion batteries. However, LiMnPO4 possesses excessively poor electrochemical activity, compared to conventional cathode materials. To enhance the electrochemical activity, we have synthesized LiMnPO4/multi-walled carbon nanotube (MWCNT) composites by employing an in-situ sol-gel method. The LiMnPO4/MWCNT composites were investigated by utilizing X-ray diffraction, thermogravimetric analysis, scanning electron microscope, transmission electron microscope, and galvanostatic charge-discharge cycling. The LiMnPO4 showed a particle size of ca. 50 nm and capacity of 102 mAh/g at 0.1 C without C.V. charging mode. This study demonstrated that the electrochemical activity of LiMnPO4 was significantly affected by not only pH and the amount of a chelating agent but also unreacted Mn2+. This is the first report analyzing the existence and effects of unreacted Mn2+ in LiMnPO4 synthesized by a sol-gel method.

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Nanocrystalline CNT-TiO2 Composites Produced by an Acid Catalyzed Sol-Gel Method

Materials Science Forum ◽

10.4028/www.scientific.net/msf.587-588.849 ◽

2008 ◽

Vol 587-588 ◽

pp. 849-853 ◽

Cited By ~ 3

Author(s):

Cláudia G. Silva ◽

Wen Dong Wang ◽

Joaquim L. Faria

Keyword(s):

Carbon Nanotube ◽

Sol Gel ◽

Pure Tio2 ◽

Absorption Properties ◽

Interphase Interaction ◽

Gel Method ◽

Sol Gel Method ◽

Composite Catalysts ◽

Acid Catalyzed

Carbon nanotube-TiO2 composites and pure TiO2 are prepared by a modified sol-gel method. The nanoscaled materials obtained are extensively characterized by spectroscopic, microscopic and calorimetric techniques. Their photoactivity is tested in the degradation of phenol under visible illumination. A correlation between the CNT content and the changes in the UV–vis absorption properties was found. The effect induced by CNT on the composite catalysts is explained in terms of an interphase interaction between CNT and TiO2 in the composite catalysts.

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