scholarly journals Syntheses of Carbon Nanotube-Metal Oxides Composites; Adsorption and Photo-degradation

10.5772/18009 ◽  
2011 ◽  
Author(s):  
Vinod Gupta ◽  
Tawfik A. Saleh
Keyword(s):  
Carbon Nanotube ◽  
Metal Oxides ◽  
Photo Degradation

scholarly journals Facile synthesis of carbon nanotube-supported NiO//Fe2O3 for all-solid-state supercapacitors

2019 ◽  
Vol 10 ◽  
pp. 1923-1932 ◽  
Author(s):  
Shengming Zhang ◽  
Xuhui Wang ◽  
Yan Li ◽  
Xuemei Mu ◽  
Yaxiong Zhang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Solid State ◽  
Metal Oxides ◽  
Reduction Method ◽  
High Capacity ◽  
Rate Capability ◽  
High Energy ◽  
High Energy Density ◽  
Carbon Cloth

We have successfully prepared iron oxide and nickel oxide on carbon nanotubes on carbon cloth for the use in supercapacitors via a simple aqueous reduction method. The obtained carbon cloth–carbon nanotube@metal oxide (CC-CNT@MO) three-dimensional structures combine the high specific capacitance and rich redox sites of metal oxides with the large specific area and high electrical conductivity of carbon nanotubes. The prepared CC-CNT@Fe2O3 anode reaches a high capacity of 226 mAh·g−1 at 2 A·g−1 with a capacitance retention of 40% at 40 A·g−1. The obtained CC-CNT@NiO cathode exhibits a high capacity of 527 mAh·g−1 at 2 A·g−1 and an excellent rate capability with a capacitance retention of 78% even at 40 A·g−1. The all-solid-state asymmetric supercapacitor fabricated with these two electrodes delivers a high energy density of 63.3 Wh·kg−1 at 1.6 kW·kg−1 and retains 83% of its initial capacitance after 5000 cycles. These results demonstrate that our simple aqueous reduction method to combine CNT and metal oxides reveals an exciting future in constructing high-performance supercapacitors.

In situ synthesis of metal oxides in carbon nanotube arrays and mechanical properties of the resulting structures

Carbon ◽  
2012 ◽  
Vol 50 (12) ◽  
pp. 4432-4440 ◽  
Author(s):  
Jordan R. Raney ◽  
Hong-Li Zhang ◽  
Daniel E. Morse ◽  
Chiara Daraio
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotube ◽  
Metal Oxides ◽  
In Situ Synthesis ◽  
Nanotube Arrays ◽  
Carbon Nanotube Arrays

VLSI-Compatible Carbon Nanotube Doping Technique with Low Work-Function Metal Oxides

Nano Letters ◽  
2014 ◽  
Vol 14 (4) ◽  
pp. 1884-1890 ◽  
Author(s):  
Luckshitha Suriyasena Liyanage ◽  
Xiaoqing Xu ◽  
Greg Pitner ◽  
Zhenan Bao ◽  
H.-S. Philip Wong
Keyword(s):  
Carbon Nanotube ◽  
Metal Oxides ◽  
Work Function ◽  
Doping Technique

Irreversible phase transition in BiVO4 nanostructures synthesized by a polyol method and enhancement in photo degradation of methylene blue

RSC Advances ◽  
2016 ◽  
Vol 6 (109) ◽  
pp. 107463-107474 ◽  
Author(s):  
Swati Nikam ◽  
Satyawati Joshi
Keyword(s):  
Phase Transition ◽  
Methylene Blue ◽  
Metal Oxides ◽  
Vibrational Spectroscopy ◽  
Polyol Method ◽  
Complementary Information ◽  
Photo Degradation ◽  
Structure And Bonding

Structure and bonding in metal oxides has been studied extensively using Raman vibrational spectroscopy and is found to provide complementary information to the crystallographic observations.

Enhanced photo-degradation of bisphenol a under simulated solar light irradiation by Zn–Ti mixed metal oxides loaded on graphene from aqueous media

RSC Advances ◽  
2016 ◽  
Vol 6 (32) ◽  
pp. 26495-26504 ◽  
Author(s):  
Shanshan Yang ◽  
Pingxiao Wu ◽  
Meiqing Chen ◽  
Zhujian Huang ◽  
Wen Li ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Metal Oxides ◽  
Aqueous Media ◽  
Mixed Metal Oxides ◽  
Photo Degradation ◽  
Mixed Metal ◽  
Weight Percentage ◽  
Simulated Solar Light ◽  
Solar Light Irradiation ◽  
Double Hydroxides

In the present study, the mixed metal oxides (rGO-ZnTi-MMO-x, x presents weight percentage of GO) were obtained by thermal treatment of a Zn–Ti layered double hydroxides-graphene oxide (GO-ZnTi-LDHs) composite.

Thermo- and Photo-Degradation of LDPE and PP Films Using Metal Oxides as Catalysts

2010 ◽  
Vol 93-94 ◽  
pp. 505-508 ◽  
Author(s):  
Sarinya Shawaphun ◽  
Thara Manangan ◽  
Sirirat Wacharawichanant
Keyword(s):  
Tensile Strength ◽  
Free Radicals ◽  
Metal Oxides ◽  
Carbonyl Compounds ◽  
Photo Degradation ◽  
Plastic Films ◽  
Carbonyl Index ◽  
Cross Linkage ◽  
Preliminary Study ◽  
Hexane Solution

Degradation of LDPE and PP films using the photo sensitive metal oxides or pro-oxidants (e.g. Fe2O3, CuxO, ZnO, and TiO2 at various particle sizes) as the catalysts in both thermo- and photo-oxidation of plastic films with oxygen followed by photolytic process to give free radicals has been studied. Our preliminary study in hexane solution found that the carbonyl index (CI) increased under the shortwave ultraviolet (254nm) significantly greater than under the longer wave (366nm) due to its greater energy and highly absorbed by the pro-oxidants generating more free radical concentration which could then be photolysed into carbonyl compounds. The pro-oxidant blended PE and PP films under ultraviolet (254nm) irradiation showed the carbonyl index elevation at the beginning and then reducing to a constant level similarly in most cases. This probably suggested that the carbonyl primarily formed and degraded into other free radicals. Under shortwave ultraviolet irradiation for 72 hours, the LDPE films containing nano-sized rutile-TiO2 and nano-sized anatase-TiO2 (1%w/w) were able to reduce the film tensile strength by 32% and 55%, respectively. The film containing micron-sized commercial TiO2 lower the film tensile strength only by 7-10%. However, the tensile strength of the TiO2 blended PP films tends to increase possibly because the rate of cross linkage exceeds the rate of scission.

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