Effect of Microwave-Hydrothermal Synthesis on Tin (II) Oxide Properties

2015 ◽  
Vol 1085 ◽  
pp. 187-191
Author(s):  
Аlina A. Pichugina ◽  
Svetlana A. Kuznetsova
Keyword(s):  
Photocatalytic Activity ◽  
Hydrothermal Synthesis ◽  
Methyl Orange ◽  
Surface Morphology ◽  
Photocatalytic Degradation ◽  
Pore Volume ◽  
Hydrothermal Processing ◽  
Sorption Activity ◽  
Microwave Hydrothermal ◽  
Degradation Of Methyl Orange

The article demonstrates how time and speed of pressure growth in the course of microwave-hydrothermal processing affect surface morphology and photocatalytic activity of tin (II) oxide. The experiment proved that the materials’ pore size and pore volume influenced their sorption activity and the speed of photocatalytic degradation of methyl orange.

Effect of pretreatment temperature on the photocatalytic activity of microwave irradiated porous nanocrystalline ZnO

2015 ◽  
Vol 39 (1) ◽  
pp. 321-332 ◽  
Author(s):  
Tarek T. Ali ◽  
Katabathini Narasimharao ◽  
Ivan P. Parkin ◽  
Claire J. Carmalt ◽  
Sanjayan Sathasivam ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Methyl Orange ◽  
Photocatalytic Degradation ◽  
Crystallite Size ◽  
Band Gap Energy ◽  
Gap Energy ◽  
Pretreatment Temperature ◽  
Short Time ◽  
High Band ◽  
Degradation Of Methyl Orange

ZnO treated at 200 °C offered high photocatalytic degradation of methyl orange (99%) in a short time (90 min). The activity can be attributed to several factors including low crystallite size, high band gap energy and porosity.

Dramatic visible light photocatalytic degradation due to the synergetic effects of TiO2 and PDA nanospheres

RSC Advances ◽  
2016 ◽  
Vol 6 (69) ◽  
pp. 64446-64449 ◽  
Author(s):  
Xiaosong Zhou ◽  
Bei Jin ◽  
Jin Luo ◽  
Xuyao Xu ◽  
Lingling Zhang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Methyl Orange ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Visible Light Photocatalytic Activity ◽  
Synergetic Effects ◽  
Degradation Of Methyl Orange ◽  
Visible Light Photocatalytic

Dramatic visible light photocatalytic activity was obtained for the degradation of methyl orange using TiO2 photocatalysts modified with polydopamine (PDA) nanospheres.

scholarly journals Inspired Preparation of Zinc Oxide Nanocatalyst and the Photocatalytic Activity in the Treatment of Methyl Orange Dye and Paraquat Herbicide

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Ghaida H. Munshi ◽  
Amal M. Ibrahim ◽  
Laila M. Al-Harbi
Keyword(s):  
Zinc Oxide ◽  
Photocatalytic Activity ◽  
Methyl Orange ◽  
Photocatalytic Degradation ◽  
Analytical Techniques ◽  
Degradation Process ◽  
Naturally Occurring ◽  
Uv Lamp ◽  
Degradation Of Methyl Orange

As the need to use green chemistry routes increases, environmentally friendly catalytic processes are a demand. One of the most important and abundant naturally occurring catalysts is chlorophyll. Chlorophyll is the first recognized catalyst; it is a reducing agent due to its electron-rich structure. The effects of spinach on the preparation of zinc oxide nanoparticles and the photocatalytic degradation of methyl orange and paraquat in sunlight and under a UV lamp and photocatalytic degradation in sunlight were studied. Different parameters of the catalytic preparation process and photocatalytic degradation process were studied. Characterization of differently prepared samples was carried out using different analytical techniques such as XRD, SEM, and EDX and finally the photocatalytic activity towards decomposition of methyl orange and paraquat.

scholarly journals Physicochemical Properties of TiO2 Nanoparticle Loaded APTES-Functionalized MWCNTs Composites and Their Photocatalytic Activity with Kinetic Study

2018 ◽  
Author(s):  
Amirah Ahmad ◽  
Mohd Hasmizam Razali ◽  
Mazidah Mamat ◽  
Karimah Kassim ◽  
Khairul Anuar Mat Amin
Keyword(s):  
Photocatalytic Activity ◽  
Methyl Orange ◽  
Physicochemical Properties ◽  
Photocatalytic Degradation ◽  
Tio2 Nanoparticles ◽  
Titania Nanoparticles ◽  
Order Kinetic ◽  
Composite Powders ◽  
Functionalized Mwcnts ◽  
Degradation Of Methyl Orange

In this study, functionalized-MWCNTs with 3-aminopropyltriethoxysilane (APTES) loaded titania nanoparticles (MWCNTs-APTES-TiO2) were prepared to investigate their physicochemical properties and photocatalytic activity for methyl orange (MO) degradation. The TiO2 nanoparticles, functionalized-MNCNT and composite powders were characterized by XRD, raman, and TEM. The results obtained proved that titania (TiO2) nanoparticles was successfully loaded on APTES-MWCNTs. The best photocatalytic degradation of methyl orange solution under UV light irradiation was recorded over MWCNTs-APTES-TiO2 (1:2), with 87% after 180 min. Kinetic analysis indicated that photocatalytic degradation of MO solution by MWCNTs-APTES-TiO2 obeyed second-order kinetic model (R2 > 0.95), supported by half-life equations and graph. The presence of carbon nanotubes accelerated the degradation of methyl orange due to inhibition of electron-hole recombination, the formation of additional hydroxyl radicals and functional groups of the latter had an inhibitory effect on the degradation of methyl orange. This study shows that the MWCNTs-APTES-TiO2 nanocomposites exhibit promising photocatalytic degradation against methyl orange.

Highly enhanced plasmonic photocatalytic activity of Ag/AgCl/TiO2 by CuO co-catalyst

2015 ◽  
Vol 3 (7) ◽  
pp. 3568-3575 ◽  
Author(s):  
Zameer Hussain Shah ◽  
Jiasheng Wang ◽  
Yuzhen Ge ◽  
Cui Wang ◽  
Wenxin Mao ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Methyl Orange ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Co Catalyst ◽  
Degradation Of Methyl Orange

The role of CuO as a co-catalyst was studied on plasmonic photocatalysis of Ag/AgCl/TiO2, and it was found that the photocatalytic degradation of methyl orange and phenol under visible light was highly enhanced when CuO was incorporated into Ag/AgCl/TiO2.

Adsorption and Photocatalytic Degradation of Methyl Orange on TiO2 and CuZSM-5 Mixture

2011 ◽  
Vol 48-49 ◽  
pp. 149-152
Author(s):  
Li Li Yang ◽  
Jin Lei Chen ◽  
Wen Jie Zhang
Keyword(s):  
Photocatalytic Activity ◽  
Methyl Orange ◽  
Photocatalytic Degradation ◽  
Pure Tio2 ◽  
Optimum Ratio ◽  
Experimental Conditions ◽  
Degradation Properties ◽  
Decoloration Rate ◽  
Degradation Of Methyl Orange

TiO2 and CuZSM-5 were mixed together as photocatalyst in dealing with photocatalytic degradation of methyl orange. Adsorption and photocatalytic degradation properties of the CuZSM-5 zeolite and mixture of TiO2 and CuZSM-5 were investigated. The CuZSM-5 zeolite has no photocatalytic activity under the experimental conditions. Methyl orange decoloration rate was 65.4%, which was 9.60% higher than that without using CuZSM-5, when TiO2 and CuZSM-5 were at the optimum ratio of 3.13:1. An optimum TiO2 concentration of 250 mg/l occurred when using pure TiO2. However, when using TiO2-CuZSM-5 mixture, the decoloration rate continuously increased with increasing photocatalyst concentration. After 70 min of irradiation, 98.4% of the initial methyl orange decoloration was found using TiO2-CuZSM-5 mixture at TiO2 concentration of 250 mg/l.

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