Synthesis and Physicochemical Properties of Nanostructured TiO2 with Enhanced Photocatalytic Activity

2021 ◽  
Vol 57 (5) ◽  
pp. 503-510
Author(s):  
I. B. Dorosheva ◽  
A. A. Valeeva ◽  
A. A. Rempel ◽  
M. A. Trestsova ◽  
I. A. Utepova ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Physicochemical Properties ◽  
Nanostructured Tio2

scholarly journals The Role of H2C2O4 and Na2CO3 as Precipitating Agents on The Physichochemical Properties and Photocatalytic Activity of Bismuth Oxide

2020 ◽  
Vol 18 (1) ◽  
pp. 129-137
Author(s):  
Yayuk Astuti ◽  
Rizka Andianingrum ◽  
Abdul Haris ◽  
Adi Darmawan ◽  
Keyword(s):  
Photocatalytic Activity ◽  
Methyl Orange ◽  
Physicochemical Properties ◽  
Bismuth Oxide ◽  
Rate Constants ◽  
Degradation Rate ◽  
Precipitation Method ◽  
Methyl Orange Degradation ◽  
Methyl Orange Dye

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.

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

2013 ◽  
Vol 110 ◽  
pp. 94-97 ◽  
Author(s):  
Jayesh D. Patel ◽  
Frej Mighri ◽  
Abdellah Ajji ◽  
Tapas K. Chaudhuri
Keyword(s):  
Photocatalytic Activity ◽  
Fatty Acid ◽  
Physicochemical Properties

Fabrication and photocatalytic activity of a novel nanostructured TiO2 metal membrane

Desalination ◽  
2011 ◽  
Vol 279 (1-3) ◽  
pp. 359-366 ◽  
Author(s):  
Won-Youl Choi ◽  
Jinwook Chung ◽  
Churl-Hee Cho ◽  
Jong-Oh Kim
Keyword(s):  
Photocatalytic Activity ◽  
Nanostructured Tio2 ◽  
Metal Membrane

scholarly journals Synthesis of Titanium Containing SBA-15 and Its Application for Photocatalytic Degradation of Phenol

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Lili Yang ◽  
Zeyu Jiang ◽  
Sufeng Lai ◽  
Chongwen Jiang ◽  
Hong Zhong
Keyword(s):  
Waste Water ◽  
Titanium Dioxide ◽  
Photocatalytic Activity ◽  
Physicochemical Properties ◽  
Phenol Degradation ◽  
Titanium Content ◽  
Structure Change ◽  
Cyclic Performance ◽  
One Pot ◽  
Simulated Waste

We synthesized Ti-containing SBA-15 by one-pot hydrothermal method and extensively investigated its physicochemical properties and examined its photocatalytic activity to degrade phenol. It’s shown that appropriate amount of titanium could be effectively incorporated into the framework of SBA-15 without provoking structure change and the tetrahedrally coordinated titanium species were well-ordered in Ti-incorporated SBA-15. Under UV-irradiation, the Ti-containing SBA-15 exhibits good photocatalytic activity for phenol degradation in the simulated waste water. The higher photocatalytic activity of Ti-containing SBA-15 to degrade phenol was ascribed to the more titanium content and anatase titanium dioxide. In addition, the new photocatalyst displays a good regeneration and cyclic performance after six runs.

scholarly journals Synthesis of Ag/ZnO Photocatalysts for the Photodegradation of Methyl Orange Dye

2021 ◽  
Vol 2 (1) ◽  
pp. 61-69
Author(s):  
Abdul Halim Abdullah ◽  
Elisa Rasouli ◽  
Ernee Noryana Muhamad ◽  
Pooneh Kia
Keyword(s):  
Photocatalytic Activity ◽  
Methyl Orange ◽  
Physicochemical Properties ◽  
Photocatalytic Performance ◽  
Hexagonal Phase ◽  
Characterization Techniques ◽  
Methyl Orange Dye ◽  
Degradation Of Methyl Orange

ZnO and a series of Ag/ZnO photocatalysts were prepared by a precipitation- irradiation method and their photocatalytic performance in photodegradation of methyl orange dye was evaluated. The physicochemical properties of the catalysts were characterized by various characterization techniques. The photocatalysts have a hexagonal phase and were highly agglomerated. TEM images showed a change in morphology of ZnO from rod to nearly spherical with the addition of Ag. Ag/ZnO catalysts exhibited better photocatalytic activity in the degradation of methyl orange compared to pure ZnO. Ag/ZnO contains 2% silver shows the best performance as photocatalyst.

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