scholarly journals Synthesis, Characterization, and Visible Light Photocatalytic Activity of Nanosized Carbon Doped Zinc Oxide

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
A. B. Lavand ◽  
Y. S. Malghe
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Calcination Temperature ◽  
Degradation Process ◽  
Catalyst Loading ◽  
Carbon Doped ◽  
Particle Size Analyzer ◽  
Ft Ir ◽  
Uv Visible ◽  
Visible Light Photocatalytic

ZnO precursor was prepared using microemulsion method. Precursor was calcined in a furnace in a temperature range of 300–500°C with an interval of 100°C. Precursor and calcined nanopowders were characterized using TG/DTA, XRD, FT-IR, EDX, TEM, SEM, and particle size analyzer. Precursor calcined at 300°C for 2 h contains 3.87% carbon (C). Increase in calcination temperature of precursor shows decrease in C content. Precursor calcined at 500°C for 2 h yielded pure ZnO. UV-visible spectrophotometer was used to analyze the concentration of MG during the degradation process. In presence of visible light C doped ZnO obtained by calcining precursor at 300°C shows better photocatalytic activity for MG degradation. Parameters affecting the photocatalytic process such as calcination temperature of catalyst, catalyst loading, MG concentration, and pH of solution have been investigated.

Synthesis of scaly Sn3O4/TiO2nanobelt heterostructures for enhanced UV-visible light photocatalytic activity

Nanoscale ◽  
2015 ◽  
Vol 7 (7) ◽  
pp. 3117-3125 ◽  
Author(s):  
Guohui Chen ◽  
Shaozheng Ji ◽  
Yuanhua Sang ◽  
Sujie Chang ◽  
Yana Wang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Visible Light Photocatalytic Activity ◽  
Uv Visible ◽  
Visible Light Photocatalytic

scholarly journals Visible-Light Photocatalytic Activity of N-Doped TiO2Nanotube Arrays on Acephate Degradation

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Xinlei Zhang ◽  
Juan Zhou ◽  
Yufen Gu ◽  
Ding Fan
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Nanotube Arrays ◽  
Optical Absorption Edge ◽  
X Ray ◽  
Visible Light Photocatalytic Activity ◽  
Uv Visible ◽  
Anodic Oxidation Method ◽  
Visible Light Photocatalytic ◽  
Nitrogen Doped Titanium Dioxide

Highly ordered nitrogen-doped titanium dioxide (N-doped TiO2) nanotube arrays were prepared by anodic oxidation method and then annealed in a N2atmosphere to obtain N-doped TiO2nanotube arrays. The samples were characterized with scanning electron microscope (SEM), X-ray powder diffraction (XRD), X-ray photoelectron spectrum (XPS), and UV-visible spectrophotometry (UV-vis) spectrum. Degradation of the insecticide acephate under the visible light was used as a model to examine the visible-light photocatalytic activity of N-doped TiO2nanotube arrays. The results show that N type doping has no notable effects on the morphology and structure of TiO2nanotube arrays. After N type doping, the N replaces a small amount of O in TiO2, forming an N–Ti–O structure. This shifts the optical absorption edge and enhances absorption of the visible light. N-doped TiO2nanotube arrays subjected to annealing at 500°C in N2atmosphere show the strongest photocatalytic activity and reach a degradation rate of 84% within 2 h.

Carbon-doped titania nanoplates with exposed {001} facets: facile synthesis, characterization and visible-light photocatalytic performance

RSC Advances ◽  
2015 ◽  
Vol 5 (23) ◽  
pp. 17667-17675 ◽  
Author(s):  
Jian-Wen Shi ◽  
Chang Liu ◽  
Chi He ◽  
Jun Li ◽  
Chong Xie ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Photocatalytic Performance ◽  
Facile Synthesis ◽  
Carbon Doped ◽  
Visible Light Photocatalytic Activity ◽  
Doped Titania ◽  
First Time ◽  
Visible Light Photocatalytic

C-doped TiO2 nanoplates (CTNP) with exposed {001} facets were synthesized for the first time. The obtained CTNP presented high visible-light photocatalytic activity. A reasonable mechanism of photocatalysis on CTNP under visible light was proposed.

scholarly journals Ni Underlayer Effect for the Structure Development and Visible Light Photocatalytic Efficiency of Carbon-Doped TiO2 Film

2021 ◽  
Vol 25 (1) ◽  
pp. 1032-1042
Author(s):  
Emilija Demikyte ◽  
Sandra Sakalauskaite ◽  
Neringa Kuliesiene ◽  
Simona Tuckute ◽  
Marius Urbonavicius ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Rhodamine B ◽  
Structural Changes ◽  
Inorganic Compounds ◽  
Anatase Phase ◽  
Specific Interaction ◽  
Carbon Doped ◽  
Visible Light Photocatalytic Activity ◽  
Visible Light Photocatalytic

Abstract Photocatalytic treatment of contaminated aqueous solutions makes use of the specific interaction between photocatalysts and ultra-violet or visible light irradiation. This method belongs to the wider class of Advanced Oxidation Processes that generates reactive oxygen species (peroxides, superoxide, hydroxyl radical, singlet oxygen, etc.) and uses them for the non-selective oxidation of various organic and inorganic compounds. In THE current study magnetron sputtering technique was used to deposit carbon-doped TiO2 films which are known to have significant photocatalytic activity in the visible light spectra and can be used for the neutralisation of contaminated solutions. Structural properties of the as-deposited films were analysed by XRD, XPS and AFM techniques, whereas their visible light photocatalytic activity was estimated by analysing Rhodamine B solution bleaching kinetics. When carbon-doped TiO2 photocatalysts were formed on borosilicate glass XRD analysis showed that they consisted of mixed phase (rutile-anatase) TiO2 where both phases contributed by similar parts. However, when the same deposition procedure was used to deposit carbon-doped TiO2 films on glass covered by Ni layer, formation of metastable anatase phase was enhanced. Estimation of visible light photocatalytic activity of the films revealed that Ni underlayer had positive effect for the efficiency of Rhodamine B solution bleaching and it could be beneficial for the practical wastewater treatment systems. It was suggested that observed improvement was mainly achieved due to the structural changes of TiO2 crystal phase, but other mechanisms like prevention of impurity diffusion from the glass substrate to the carbon-doped TiO2 film, or positive Ni doping effect could not be excluded completely.

Synthesis of carbon-doped g-C3N4 composites with enhanced visible-light photocatalytic activity

2014 ◽  
Vol 137 ◽  
pp. 281-284 ◽  
Author(s):  
Yeping Li ◽  
Shilong Wu ◽  
Liying Huang ◽  
Junli Wang ◽  
Hui Xu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Carbon Doped ◽  
Visible Light Photocatalytic Activity ◽  
Visible Light Photocatalytic

Synthesis of Nanocrystalline LaFeO3 by Precipitation and its Visible-Light Photocatalytic Activity

2011 ◽  
Vol 694 ◽  
pp. 150-154 ◽  
Author(s):  
Pei Song Tang ◽  
Meng Bi Fu ◽  
Hai Feng Chen ◽  
Feng Cao
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Diffuse Reflectance Spectroscopy ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
Visible Light Photocatalytic Activity ◽  
Degussa P25 ◽  
Uv Visible ◽  
532 Nm ◽  
Visible Light Photocatalytic

The LaFeO3 nanoparticle was synthesized using Fe(NO3)3 and La(NO3)3 as starting materials by homogeneous precipitation method. The as-prepared LaFeO3 product was characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM) and UV-visible diffuse reflectance spectroscopy (DRS). XRD and SEM demonstrate the successful synthesis of single phase perovskite LaFeO3 and with 60-80 nm particle size. It was found that the as-prepared LaFeO3 shows strong visible-light absorption with absorption onset of 532 nm, indicating a narrow optical band gap of 2.33 eV. Furthermore, the as-prepared LaFeO3 shows high visible-light photocatalytic activity for decomposition of methylene blue in comparison with the commercial Degussa P25.

Photocatalytic Degradation of Organic Pollutants at Solution Bulk with Pigment/TiO2 Nanocomposite

2013 ◽  
Vol 562-565 ◽  
pp. 1319-1324 ◽  
Author(s):  
Xi Li Shangand ◽  
Tian Yong Zhang ◽  
Chang Hai Li ◽  
Bin Li ◽  
Xiao Wang
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Industrial Wastewater ◽  
Adsorption Capacities ◽  
Photocatalytic Activities ◽  
Ft Ir ◽  
Adsorption Desorption ◽  
Degradation Of Methyl Orange ◽  
Visible Light Photocatalytic

In this paper, two newly explored TiO2 photocatalyst sensitized with commercial stable pigment (BYH3G and PR254) were prepared and characterized by FT–IR, UV–Vis, XRD and N2 adsorption-desorption isotherms. The adsorption capacities and the photocatalytic activities of as-prepared photocatalysts were evaluated by photocatalytic degradation of Methyl Orange and Rhodamine B under visible light irradiation. The as-prepared photocatalysts displayed high visible light photocatalytic activity than pure TiO2 under the same conditions. The photocatalytic activity can be reproduced commendably demonstrates that the as-prepared photocatalysts are stable and renewable, which are potentially important properties in the application of industrial wastewater treatment.

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