TiO2 composited with carbon nanofibers or nitrogen-doped carbon nanotubes synthesized using coal fly ash as a catalyst: bisphenol-A photodegradation efficiency evaluation

2018 ◽  
Vol 42 (6) ◽  
pp. 4531-4542 ◽  
Author(s):  
Lerato Hlekelele ◽  
Paul J. Franklyn ◽  
Farai Dziike ◽  
Shane H. Durbach
Keyword(s):  
Carbon Nanotubes ◽  
Fly Ash ◽  
Bisphenol A ◽  
Carbon Nanomaterials ◽  
Coal Fly Ash ◽  
Efficiency Evaluation ◽  
Photocatalytic Efficiency ◽  
Nitrogen Doped ◽  
Photodegradation Efficiency ◽  
Nitrogen Doped Carbon

The photocatalytic efficiency of TiO2 was improved by compositing it with carbon nanomaterials synthesized using a waste material, fly ash.

scholarly journals Morphological and crystallinity differences in nitrogen-doped carbon nanotubes grown by chemical vapour deposition decomposition of melamine over coal fly ash

RSC Advances ◽  
2016 ◽  
Vol 6 (80) ◽  
pp. 76773-76779 ◽  
Author(s):  
Lerato Hlekelele ◽  
Paul J. Franklyn ◽  
Pranav K. Tripathi ◽  
Shane H. Durbach
Keyword(s):  
Carbon Nanotubes ◽  
Fly Ash ◽  
Chemical Vapour Deposition ◽  
Vapour Deposition ◽  
Coal Fly Ash ◽  
Chemical Vapour ◽  
Nitrogen Doped ◽  
N Incorporation ◽  
Nitrogen Doped Carbon ◽  
Waste Coal

CVD of melamine over waste coal fly ash to form N-doped carbon nanotubes (NCNTs) of various morphologies and crystallinities as a function of temperature and % N incorporation.

scholarly journals Metal-free catalysis based on nitrogen-doped carbon nanomaterials: a photoelectron spectroscopy point of view

2018 ◽  
Vol 9 ◽  
pp. 2015-2031 ◽  
Author(s):  
Mattia Scardamaglia ◽  
Carla Bittencourt
Keyword(s):  
Carbon Nanotubes ◽  
Surface Science ◽  
Photoelectron Spectroscopy ◽  
Carbon Nanomaterials ◽  
State Of The Art ◽  
Point Of View ◽  
Nitrogen Doped ◽  
Nitrogen Doped Carbon ◽  
Scientific Questions

In this review, we discuss the use of doped carbon nanomaterials in catalysis, a subject that is currently intensively studied. The availability of carbon nanotubes since the 1990’s and of graphene ten years later prompted the development of novel nanotechnologies. We review this topic linking fundamental surface science to the field of catalysis giving a timely picture of the state of the art. The main scientific questions that material scientists have addressed in the last decades are described, in particular the enduring debate on the role of the different nitrogen functionalities in the catalytic activity of nitrogen-doped carbon nanotubes and graphene.

Pyridine-grafted nitrogen-doped carbon nanotubes achieving efficient electroreduction of CO2 to CO within a wide electrochemical window

2022 ◽  
Author(s):  
Yuning Zhang ◽  
Hao Jiang ◽  
Dongfang Niu ◽  
Manke Ingo ◽  
Chao Yang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Adsorption Capacity ◽  
Electrochemical Reduction ◽  
Carbon Nanomaterials ◽  
Nitrogen Doped ◽  
Electrochemical Window ◽  
Weak Adsorption ◽  
Reduction Of Co2 ◽  
Nitrogen Doped Carbon

Nitrogen-doped carbon nanomaterials for electrochemical reduction of CO2 (CO2ER) to CO have been extensively investigated, evaluated, and applied recently. Nevertheless, their weak adsorption capacity for CO2 usually results in a...

scholarly journals Nitrogen-Doped Carbon Nanotubes Synthesised by Pyrolysis of (4-{[(pyridine-4-yl)methylidene]amino}phenyl)ferrocene

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Godfrey Keru ◽  
Patrick G. Ndungu ◽  
Vincent O. Nyamori
Keyword(s):  
Carbon Nanotubes ◽  
Raman Spectroscopy ◽  
Carbon Source ◽  
Carbon Nanomaterials ◽  
Carbon Spheres ◽  
Nitrogen Doped ◽  
Pristine Cnts ◽  
Higher Temperature ◽  
Lower Temperature ◽  
Nitrogen Doped Carbon

Nitrogen-doped carbon nanotubes (N-CNTs) were synthesized by pyrolysis of (4-{[(pyridine-4-yl)methylidene]amino}phenyl)ferrocene in a solution of either acetonitrile or toluene as carbon source. This was achieved by testing three different growth temperatures (800, 850, and 900°C), and the 850°C was found to be the most favourable condition for N-CNT growth. At the lower temperature of 800°C, amorphous carbon was mainly formed while at the higher temperature of 900°C, the yield of carbon spheres (CSs) increased. Apart from the variation in temperature, the formation of other shaped carbon nanomaterials (SCNMs) was found to be carbon source dependent. Acetonitrile was found to produce mainly N-CNTs with “bamboo” morphology while toluene formed a mixture of pristine CNTs and N-CNTs in the ratio of 1 : 1. N-CNTs, and other SCNMs synthesized were characterized by means of TEM, SEM, Raman spectroscopy, TGA, and elemental analysis.

Sign in / Sign up

Export Citation Format

Share Document