Synthesis of SnO2 and Zn doped SnO2 Nanoparticles by Flame Oxidation Process for Photocatalytic degradation of Methylene Blue Dye

Abstract A very simple and rapid flame oxidation method is effectively used to synthesis pure Tin Oxide (SnO2) and Zinc doped Tin Oxide (Zn:SnO2) nanoparticles from the metallic Tin (Sn) and Zinc (Zn) powders for the photocatalytic degradation of Methylene blue (MB) dye and characterized to study their structural, optical, elemental and chemical properties. From the X-ray diffraction analysis (XRD) it indicates that the synthesized SnO2 and Zn:SnO2 nanoparticles have pure tetragonal and cubical phases respectively and their average size increases when Zn was doped with SnO2. Raman spectral studies confirms the various mode of vibrations and the crystal structure of the synthesized nanoparticles from the spectral peaks of Raman shifts. Purity, atomic percentage and chemical composition were analysed using Energy dispersive X-ray analysis (EDX). The band gap energy was increasing from 3.5 eV to 3.6 eV when doping of Zn with SnO2, which was revealed from the UV-visible spectroscopic analysis. Photoluminescence analysis (PL) confirms the red shifted emission for Zn:SnO2 due to the oxygen deficiency. The CIE chromaticity(x,y) for SnO2 and Zn:SnO2 was calculated from the emission spectra and the cordinates represents blue and violet region respectively. Field Emission Scanning Electron Microscopy (FESEM) analysis shows that the pure SnO2 nanoparticles have irregular, agglomerated, nanoflowered and nanoclustered formation whereas Zn:SnO2 nanoparticles have more crystalline, cubical and nanoflakes structures. The photocatalytic activity was enhanced due to the presence of Zn in SnO2 under UV light irradiation. The efficiency of MB degradation by SnO2 and Zn:SnO2 nanoparticles are above 80%, which proves to be an effective photocatalyst.

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Photocatalytic degradation of methylene blue dye solution using different amount of ZnO as a photocatalyst

Science Letters ◽

10.24191/sl.v15i1.11789 ◽

2021 ◽

Vol 15 (1) ◽

pp. 1

Author(s):

Hartini Ahmad Rafaie ◽

Nur Fitrahana Mohd Yusop ◽

Nurathira Faqihah Azmi ◽

Nur Syakirah Abdullah ◽

Nurul Infaza Talalah Ramli

Keyword(s):

Methylene Blue ◽

Zinc Oxide ◽

Photocatalytic Degradation ◽

Uv Light ◽

Blue Dye ◽

X Ray Diffraction ◽

Pseudo First Order Reaction ◽

Photodegradation Rate ◽

Photocatalytic Activities ◽

Zno Powder

Zinc oxide (ZnO) powder was used as a photocatalyst for the photocatalytic degradation of methylene blue (MB) dye solution. In this study, different amount of ZnO (10, 20 and 30 mg) as photocatalyst was used to investigate the performance of photocatalytic degradation of MB dye solution. The morphology and structural properties of ZnO powder were studied by X-ray diffraction (XRD) and Field Emission Scanning Electron Microscope (FESEM) techniques. The photocatalytic activities of the ZnO powder were investigated by degrading the MB dye solution under UV light irradiation at different amounts of ZnO photocatalyst. The percentage degradation of MB dye solution in the presence of 10 mg ZnO powder was found to be the highest at 96.2 % within 60 min irradiation compared to 20 and 30 mg of ZnO powder. The photodegradation rate constants, k obtained in this study were 0.0661, 0.0558, and 0.0507 min-1 for 10, 20, and 30 mg ZnO powder, respectively that follow the pseudo first-order reaction kinetics. Keywords: Methylene blue, photocatalytic degradation, photocatalyst, Zinc Oxide

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Comparison of the structural and photo-catalytic properties of nanostructured Fe3O4/TiO2 core-shell composites synthesized by ultrasonic and Stöber methods

Science of Sintering ◽

10.2298/sos2004415p ◽

2020 ◽

Vol 52 (4) ◽

pp. 415-432

Author(s):

Faezeh Parast ◽

Mehdi Montazeri-Pour ◽

Masoud Rajabi ◽

Fatemeh Bavarsiha

Keyword(s):

Electron Microscopy ◽

Methylene Blue ◽

Catalytic Properties ◽

Uv Light ◽

Oxide Coating ◽

Blue Dye ◽

Core Shell ◽

Methylene Blue Dye ◽

X Ray ◽

Titanium Oxide Coating

In the present research, Fe3O4/TiO2 magnetic photo-catalytic nanocomposites with a core/shell structure were successfully synthesized using two techniques of ultrasonic and St?ber. In this way, iron oxide (II, III) nanoparticles as soft magnetic cores of this composite were prepared by utilizing a chemical method assisted by ultrasound with a Fe+3/Fe+2 molar ratio of 1.5 under the nitrogen atmosphere. Thereafter, titanium oxide coating was performed on Fe3O4 nanoparticles by using tetrabutyl orthotitanate (TBOT) and titanium isopropoxide (TTIP) precursors. The resultant nanostructures were characterized by means of X-ray powder diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy, energy dispersive X-ray (EDX) analysis, vibrating sample magnetometer (VSM), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Through findings obtained from TEM examinations, the formation of core/shell nanostructure was confirmed in the prepared Fe3O4/TiO2 composites. Analysis of magnetic properties revealed that titanium oxide coating on iron oxide nanoparticles reduces saturation magnetization (Ms). The values of saturation magnetization for Fe3O4 powder and Fe3O4/TiO2 nanocomposite powders achieved via ultrasonic and St?ber methods were 60, 23 and 9 emu/g, respectively. Photo-catalytic properties of Fe3O4/TiO2 nanostructures were evaluated by the use of methylene blue dye under UV light. Results indicated that Fe3O4/TiO2 composite obtained by the St?ber method has a better photo-catalytic property as well as a decreased but acceptable magnetic separation. Degradation of methylene blue dye in the presence of photo-catalytic powder prepared by ultrasonic and St?ber procedures was 61 and 69 %, respectively, within 90 minutes of UV light exposure.

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Photocatalytic degradation of methylene blue dye by nonconventional synthesized SnO2 nanoparticles

Environmental Nanotechnology Monitoring & Management ◽

10.1016/j.enmm.2018.07.006 ◽

2018 ◽

Vol 10 ◽

pp. 339-350 ◽

Cited By ~ 11

Author(s):

Sai Kumar Tammina ◽

Badal Kumar Mandal ◽

Nalinee Kanth Kadiyala

Keyword(s):

Methylene Blue ◽

Photocatalytic Degradation ◽

Sno2 Nanoparticles ◽

Blue Dye ◽

Methylene Blue Dye

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Visible-Light Driven Effective Photocatalytic Degradation of Methylene Blue Dye Using Perforated Curly Zn0.1Ni0.9O Nanosheets

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2020.17898 ◽

2020 ◽

Vol 20 (9) ◽

pp. 5759-5764

Author(s):

V. Karthikeyan ◽

G. Gnanamoorthy ◽

P. Varun Prasath ◽

V. Narayanan ◽

Suresh Sagadevan ◽

...

Keyword(s):

Methylene Blue ◽

Visible Light ◽

Photocatalytic Degradation ◽

Organic Waste ◽

Hydrothermal Process ◽

Blue Dye ◽

Cubic Phase ◽

X Ray Diffraction ◽

X Ray ◽

Visible Light Driven

Herein, we report the facile synthesis, characterization and visible-light-driven photocatalytic degradation of perforated curly Zn0.1Ni0.9O nanosheets synthesized by hydrothermal process. The X-ray diffraction (XRD) and scanning electron microscopy (SEM) studies confirmed the cubic phase crystalline structure and growth of high density perforated curly Zn0.1Ni0.9O nanosheets, respectively. As a photocatalyst, using methylene blue (MB) as model pollutant, the synthesized nanosheets demonstrated a high degradation efficiency of ~76% in 60 min under visible light irradiation. The observed results suggest that the synthesized Zn0.1Ni0.9O nanosheets are attractive photocatalysts for the degradation of toxic organic waste in the water under visible light.

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USE OF NANOSIZED CHROMIUM DOPED TiO2 SUPPORTED ON ZEOLITE FOR METHYLENE BLUE DEGRADATION

Indonesian Journal of Chemistry ◽

10.22146/ijc.21475 ◽

2010 ◽

Vol 10 (1) ◽

pp. 20-25 ◽

Cited By ~ 3

Author(s):

Aarti Ameta ◽

Indu Bhati ◽

Rakshit Ameta ◽

Suresh C. Ameta

Keyword(s):

Methylene Blue ◽

Titanium Dioxide ◽

Photocatalytic Degradation ◽

Sol Gel ◽

Blue Dye ◽

Photocatalytic Reaction ◽

Methylene Blue Dye ◽

X Ray Diffraction ◽

Methylene Blue Degradation ◽

X Ray

The photocatalytic degradation of methylene blue dye under visible light has been investigated using chromium modified titanium dioxide supported on zeolite (Cr-TiO2/zeolite). The photocatalyst was prepared by sol-gel method and characterized by X-ray diffraction and SEM. The rate of photodegradation of dye was monitored spectrophotometrically. The effect of pH, dye concentration, amount of photocatalyst and intensity of light on the rate of photocatalytic reaction was observed. The results showed that the use of Cr-doped TiO2 increased the rate of photocatalytic degradation of methylene blue as compared to untreated TiO2. The photocatalytic mechanism of Cr-TiO2 catalyst has been tentatively discussed. Keywords: Methylene blue, zeolite, chromium, photocatalytic degradation

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Nano-sized SnO2 Photocatalysts: Synthesis, Characterization and Their Application for the Degradation of Methylene Blue Dye

Journal of Scientific Research ◽

10.3329/jsr.v8i3.27524 ◽

2016 ◽

Vol 8 (3) ◽

pp. 399-411 ◽

Cited By ~ 8

Author(s):

M. T. Uddin ◽

Y. Sultana ◽

M. A. Islam

Keyword(s):

Methylene Blue ◽

Photocatalytic Activity ◽

Uv Light ◽

Irradiation Time ◽

Sno2 Nanoparticles ◽

Average Crystallite Size ◽

Precipitation Method ◽

Catalyst Loading ◽

Blue Dye ◽

Effect Of Ph

In the present study, tin oxide (SnO2) nanoparticles were prepared by precipitation method using tin tetrachloride (SnCl4) as precursor and ammonia solution as precipitating agent followed by calcination at 400 ºC for 2 h. As-prepared SnO2 particles were characterized by X-ray diffraction (XRD) and Fourier Transform Infrared (FTIR). The powder XRD results revealed that the SnO2 nanoparticles had a typical tetragonal rutile (cassiterite) structure and the average crystallite size calculated by using the Debye Scherrer equation was found to be approximately 5.1 nm. The photocatalytic activity of the as-prepared photocatalysts was investigated by degrading methylene blue (MB) dye. The effect of pH, catalyst loading and initial dye concentration on photocatalytic degradation was investigated. Results showed that the SnO2 nanoparticles represented excellent photocatalytic activity for the degradation of MB under UV light with 200 min of irradiation time. The results also showed that the pH of solution had a direct influence on the photocatalysis process and basic pH was favorable for the degradation of MB. The effect of pH on photocatalytic activity was explained with the help of zero point charge (pHpzc). Furthermore, the photocatalysts could be easily recycled without significant change in the catalytic activity.

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Influence of rare-earth metal on the zinc oxide nanostructures: application in the photocatalytic degradation of methylene blue and p-nitro phenol

Green Processing and Synthesis ◽

10.1515/gps-2017-0006 ◽

2018 ◽

Vol 7 (4) ◽

pp. 360-371 ◽

Cited By ~ 14

Author(s):

Prakash K. Labhane ◽

Gunvant H. Sonawane ◽

Shirish H. Sonawane

Keyword(s):

Methylene Blue ◽

Zinc Oxide ◽

Photocatalytic Activity ◽

Rare Earth ◽

Photocatalytic Degradation ◽

Uv Light ◽

Light Radiation ◽

Spherical Nanoparticles ◽

X Ray ◽

Doped Zno

Abstract Rare-earth cerium (Ce)-doped zinc oxide (ZnO) spherical nanoparticles were synthesized by using the co-precipitation method. The doped materials were characterized by means of the X-ray diffraction, Williamson-Hall Plot, and field emission scanning electron microscopy analyses. The prepared nanoparticles exhibit a hexagonal wurtzite structure as observed from the XRD measurements. Energy dispersive X-ray spectroscopy data confirmed the purity of the prepared samples. The photocatalytic activity of the rare-earth Ce-doped ZnO spherical nanoparticles was investigated through the degradation of methylene blue (MB) and p-nitrophenol (PNP) solution under UV light radiation. Among the different amounts of dopant, 5 mole% Ce-doped ZnO nanoparticles showed the highest degradation with UV light radiation for both MB dye and PNP solution. The particle size, morphology, and separation of the photo-induced electron–hole pair are the main factors that influence photocatalytic activity. The probable mechanisms of photocatalytic degradation and mineralization of MB and PNP are also explained by liquid chromatography–mass spectrometry analysis.

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