scholarly journals Insights into Metal Oxide and Zero-Valent Metal Nanocrystal Formation on Multiwalled Carbon Nanotube Surfaces during Sol-Gel Process

Nanomaterials ◽  
2018 ◽  
Vol 8 (6) ◽  
pp. 403 ◽  
Author(s):  
Dipesh Das ◽  
Indu Sabaraya ◽  
Tara Sabo-Attwood ◽  
Navid Saleh
Keyword(s):  
Carbon Nanotube ◽  
Metal Oxide ◽  
Sol Gel ◽  
Multiwalled Carbon Nanotube ◽  
Multiwalled Carbon ◽  
Sol Gel Process ◽  
Nanocrystal Formation

scholarly journals Elucidating How Surface Functionalization of Multiwalled Carbon Nanotube Affects Nanostructured MWCNT/Titania Hybrid Materials

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Cheng-Fu Yang ◽  
Wei-Chieh Hsu ◽  
Song-Mao Wu ◽  
Chean-Cheng Su
Keyword(s):  
Carbon Nanotube ◽  
Sol Gel ◽  
Multiwalled Carbon Nanotube ◽  
Acyl Chloride ◽  
Hydroxyl Groups ◽  
X Ray Diffraction ◽  
Multiwalled Carbon ◽  
Transmission Electron ◽  
Sol Gel Process ◽  
Functionalized Mwcnts

The new class of multiwalled carbon nanotube (MWCNT)/titania nanocomposites was prepared using a sol-gel technique. The addition of titania to MWCNTs has the potential to provide new capability for the development of electrical devices by taking advantage of the favorable electric characteristics of MWCNTs. MWCNTs were first functionalized with carboxyl, acyl chloride, amine, and hydroxyl groups and were then dispersed in a tetraisopropyl titanate (TIPT) solution via ultrasonic processing. After gelation, well-dispersed titania in the MWCNT/titania nanocomposites was obtained. Functionalized MWCNTs with varied functional groups were proved by Fourier transform infrared spectroscopy (FT-IR). For the nanocomposites, the degree of the sol-gel process were proved by Raman spectroscopy and wide-angle X-ray diffraction (WAXD). Furthermore, the morphology of the MWCNT/titania nanocomposites was observed using transmission electron microscopy (TEM). In the sol-gel process, the functionalized MWCNTs with carboxyl, acyl chloride, amine, and hydroxyl groups have resulted in the carbon nanotube-graft-titania nanocomposites with a network structure of titania between the carbon nanotubes.

scholarly journals Synthesis of Metal Oxide Decorated Polycarboxyphenyl Polymer-Grafted Multiwalled Carbon Nanotube Composites by a Chemical Grafting Approach for Supercapacitor Application

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Do-Yeon Kang ◽  
Pashupati Pokharel ◽  
Yeong-Seok Kim ◽  
Sunwoong Choi ◽  
Seong-Ho Choi
Keyword(s):  
Electron Microscopy ◽  
Carbon Nanotube ◽  
Metal Oxide ◽  
Specific Capacitance ◽  
Metal Oxide Nanoparticles ◽  
Morphological Characteristics ◽  
Multiwalled Carbon Nanotube ◽  
Oxide Nanoparticles ◽  
Multiwalled Carbon ◽  
Scan Rate

We present grafting of polycarboxyphenyl polymer on the surface of multiwalled carbon nanotube (MWCNT) via a free radical polymerization and subsequent anchoring of the metal oxide nanoparticles for the evaluation of their potential applicability to supercapacitor electrodes. Here, metal oxide nanoparticles, Fe3O4and Sm2O3, were created after the oxidation of metal precursors Sm(NO3)3and FeCl2, respectively, and attached on the surface of polycarboxyphenyl-grafted MWCNT (P-CNT) in aqueous medium. This approach shows a potential for enhancing the dispersion of Fe3O4and Sm2O3nanoparticles on the wall of P-CNT. The structure and morphological characteristics of the purified MWCNT, P-CNT, and metal oxide-anchored polycarboxyphenyl-grafted MWCNT (MP-CNT) nanocomposites were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and thermogravimetric analysis (TGA). The electrochemical performance of the purified MWCNT electrode, P-CNT electrode, and MP-CNT electrodes was tested by cyclic voltammetry (CV) and galvanostatic charge discharge in a 1.0 M H2SO4aqueous electrolyte. The results showed that the specific capacitance of the purified MWCNT was 45.3 F/g at the scan rate of 5 mV/s and increased to 54.1 F/g after the modification with polycarboxyphenyl polymer. Further modification of P-CNT with Sm2O3and Fe3O4improved the specific capacitance of 65.84 F/g and 173.38 F/g, respectively, at the same scan rate.

Sol–gel synthesis of multiwalled carbon nanotube-LiMn2O4 nanocomposites as cathode materials for Li-ion batteries

2010 ◽  
Vol 195 (13) ◽  
pp. 4290-4296 ◽  
Author(s):  
Xian-Ming Liu ◽  
Zheng-Dong Huang ◽  
Seiwoon Oh ◽  
Peng-Cheng Ma ◽  
Philip C.H. Chan ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Cathode Materials ◽  
Sol Gel ◽  
Multiwalled Carbon Nanotube ◽  
Li Ion Batteries ◽  
Multiwalled Carbon ◽  
Li Ion ◽  
Sol Gel Synthesis

Inexpensive sol-gel synthesis of multiwalled carbon nanotube-TiO2 hybrids for high performance antibacterial materials

2016 ◽  
Vol 68 ◽  
pp. 780-788 ◽  
Author(s):  
Nadir Abbas ◽  
Godlisten N. Shao ◽  
M. Salman Haider ◽  
Syed Muhammad Imran ◽  
Sung Soo Park ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
High Performance ◽  
Sol Gel ◽  
Multiwalled Carbon Nanotube ◽  
Multiwalled Carbon ◽  
Antibacterial Materials ◽  
Sol Gel Synthesis
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