Physicochemical properties and photocatalytic activity of the TiO2/SiO2 prepared by precipitation method

AbstractSynthesis of bismuth oxide synthesis through the precipitation method using H2C2O4 and Na2CO3 precipitating agents, identification of physicochemical properties and its photocatalysis activity for methyl orange degradation were conducted. The bismuth oxide synthesis was undertaken by dissolving Bi(NO3)3.5H2O in HNO3, then added precipitating agents to form precipitate. The results showed that bismuth oxide produced by H2C2O4 precipitating agent was a yellow powder containing a mixture of α-Bi2O3 (monoclinic) and β-Bi2O3 (tetragonal), porous with size of 28-85 μm. Meanwhile, the use of Na2CO3 as precipitating agent resulted in bismuth oxide consisting of α-Bi2O3 and β-Bi2O3 and Bi2O4, irregular shape without pore being 40-115 μm in size. Bismuth oxide synthesized with H2C2O4 precipitating agent showed higher photocatalytic activity compared to bismuth oxide synthesized using Na2CO3 on degrading methyl orange dye with degradation rate constants of 2.35x10-5 s-1 for H2C2O4 and 1.81x10-5 s-1 for Na2CO3.

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Photocatalytic Activity of Fe-Doped ZnO/Montmorillonite Nanocomposite for Degradation of Malachite Green

Materials Science Forum ◽

10.4028/www.scientific.net/msf.827.19 ◽

2015 ◽

Vol 827 ◽

pp. 19-24 ◽

Cited By ~ 4

Author(s):

Nur Afifah ◽

Nadia Febiana Djaja ◽

Rosari Saleh

Keyword(s):

Photocatalytic Activity ◽

Malachite Green ◽

Organic Dyes ◽

Uv Light ◽

Precipitation Method ◽

X Ray Diffraction ◽

X Ray ◽

Spin Resonance ◽

Doped Zno ◽

Co Precipitation

In this study, the photocatalytic activity of pure Fe- doped ZnO and Fe- doped ZnO/Montmorillonite nanocomposite has been investigated for the degradation of malachite green under UV light irradiation. Both photocatalysts were synthesized using co-precipitation method and characterized by X-ray diffraction, energy dispersive X-ray spectroscopy, Fourier-transform infrared absorption, and electron spin resonance. The results showed that the photocatalytic efficiency is better in the presence of montmorillonite compared to pure Fe- doped ZnO. To detect the possible reactive species involved in degradation of organic dyes control experiments with introducing scavengers into the solution of organic dyes were carried out. It is found that electron plays an important role in the degradation of malachite green.

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Fatty acid-assisted synthesis of CdS microspheres: physicochemical properties and photocatalytic activity

Materials Letters ◽

10.1016/j.matlet.2013.08.007 ◽

2013 ◽

Vol 110 ◽

pp. 94-97 ◽

Cited By ~ 8

Author(s):

Jayesh D. Patel ◽

Frej Mighri ◽

Abdellah Ajji ◽

Tapas K. Chaudhuri

Keyword(s):

Photocatalytic Activity ◽

Fatty Acid ◽

Physicochemical Properties

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Improved photocatalytic activity for degradation of textile dyeing waste water and thiazine dyes using PbWO4 nanoparticles synthesized by co-precipitation method

Environmental Research ◽

10.1016/j.envres.2021.111721 ◽

2021 ◽

pp. 111721

Author(s):

K. Asha ◽

C. Hentry ◽

M.R. Bindhu ◽

Amal M. Al-Mohaimeed ◽

Mohamed Ragab AbdelGawwad ◽

...

Keyword(s):

Waste Water ◽

Photocatalytic Activity ◽

Precipitation Method ◽

Textile Dyeing ◽

Thiazine Dyes ◽

Co Precipitation

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The effects of solvent viscosity on the morphology and photocatalytic activity of BiOBr catalysts

Functional Materials Letters ◽

10.1142/s1793604721430062 ◽

2021 ◽

Author(s):

Fengjuan Ge ◽

Jie Zhu ◽

Yan Xu ◽

Jing Li ◽

Xueyang Zhang

Keyword(s):

Photocatalytic Activity ◽

Surface Area ◽

Rhodamine B ◽

Synthesis Method ◽

Degradation Process ◽

High Viscosity ◽

Precipitation Method ◽

Glycerol Solution ◽

Solvent Viscosity ◽

Degradation Tests

BiOBr photocatalysts were prepared by changing the solvent and synthesis method. SEM, XRD and BET characterization shows that the sample prepared in high-viscosity solution by precipitation method has tremella-like microstructure, with smaller size and higher surface area. Among them, the BiOBr prepared in glycerol solution (GR-P) has the highest surface area of 113.8 m2⋅[Formula: see text]. XRD also indicates that the GR-P has much more exposed (110) facets than other samples. The Rhodamine B degradation tests show that the GR-P has the best activity on both deethylation and aromatic ring destruction steps, indicating that the exposed (110) facets promote the degradation process.

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TiOF2/TiO2 composite nanosheets: Effect of hydrothermal synthesis temperature on physicochemical properties and photocatalytic activity

Journal of the Taiwan Institute of Chemical Engineers ◽

10.1016/j.jtice.2018.11.013 ◽

2019 ◽

Vol 96 ◽

pp. 214-222 ◽

Cited By ~ 8

Author(s):

Zhendong Liu ◽

Xiaona Liu ◽

Qifang Lu ◽

Qinyu Wang ◽

Zhen Ma

Keyword(s):

Photocatalytic Activity ◽

Hydrothermal Synthesis ◽

Physicochemical Properties ◽

Synthesis Temperature

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Controlled Synthesis and Photocatalytic Activity of TiO2 Nanoparticles by a Novel Gel-Network Precipitation Method

Asian Journal of Chemistry ◽

10.14233/ajchem.2013.12824 ◽

2013 ◽

Vol 25 (2) ◽

pp. 739-744 ◽

Cited By ~ 2

Author(s):

Yingling Wang ◽

Youhai Xie ◽

Jianmei Yuan ◽

Guoguang Liu

Keyword(s):

Photocatalytic Activity ◽

Tio2 Nanoparticles ◽

Precipitation Method ◽

Controlled Synthesis ◽

Gel Network

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Stacked ZnO nanorods synthesized by solution precipitation method and their photocatalytic activity study

Journal of Sol-Gel Science and Technology ◽

10.1007/s10971-015-3646-z ◽

2015 ◽

Vol 74 (1) ◽

pp. 260-271 ◽

Cited By ~ 26

Author(s):

Myo Thuya Thein ◽

Swee-Yong Pung ◽

Azizan Aziz ◽

Mitsuru Itoh

Keyword(s):

Photocatalytic Activity ◽

Zno Nanorods ◽

Precipitation Method

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Influence of Ag Doping on the Crystal Structure and Photocatalytic Activity of FeVO4

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.197-198.919 ◽

2011 ◽

Vol 197-198 ◽

pp. 919-925 ◽

Cited By ~ 2

Author(s):

Min Wang ◽

Qiong Liu

Keyword(s):

Photocatalytic Activity ◽

Methyl Orange ◽

Photoelectron Spectroscopy ◽

Methyl Orange Solution ◽

Precipitation Method ◽

X Ray Diffraction ◽

Electron Hole ◽

X Ray ◽

Orange Solution ◽

Decoloration Rate

Silver (Ag+) doped iron (III) vanadate (FeVO4) samples are prepared by the precipitation method and then characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), and X-ray photoelectron spectroscopy(XPS). The photocatalytic activity under visible light is evaluated by photocatalytic degradation of methyl orange (MO) in the solution. The results show that both FeVO4 and Ag+ doped FeVO4 samples are triclinic, the later have different surface morphology, and some needle-shaped materials appear in the later. From XPS, there are more Fe2+ ions in Ag+ doped FeVO4 sample than that in FeVO4 one without Ag+. It indicates that Ag+ doping can increase the density of the surface oxygen vacancies of catalysts, which can act as electron traps promoting the electron-hole separation and then increase the photo-activity. The decoloration rate after Ag+ doping against methyl orange solution can reach about 81%, and be more about 20％ than that of pure FeVO4.

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