Biosynthesis of ZnO nanoparticles using rambutan (Nephelium lappaceumL.) peel extract and their photocatalytic activity on methyl orange dye

2016 ◽  
Vol 1125 ◽  
pp. 358-365 ◽  
Author(s):  
Thenmozhi Karnan ◽  
Stanly Arul Samuel Selvakumar
Keyword(s):  
Photocatalytic Activity ◽  
Methyl Orange ◽  
Zno Nanoparticles ◽  
Methyl Orange Dye ◽  
Peel Extract

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.

Solar-light-driven photocatalytic degradation of methyl orange dye over Co3O4-ZnO nanoparticles

2021 ◽  
Vol 284 ◽  
pp. 128902 ◽  
Author(s):  
Vy Anh Tran ◽  
Thanh Khoa Phung ◽  
Van Thuan Le ◽  
The Ky Vo ◽  
Tan Tai Nguyen ◽  
...  
Keyword(s):  
Methyl Orange ◽  
Photocatalytic Degradation ◽  
Zno Nanoparticles ◽  
Solar Light ◽  
Methyl Orange Dye ◽  
Degradation Of Methyl Orange

Continuous synthesis of hedgehog-like Ag–ZnO nanoparticles in a two-stage microfluidic system

RSC Advances ◽  
2016 ◽  
Vol 6 (51) ◽  
pp. 45503-45511 ◽  
Author(s):  
Sha Tao ◽  
Mei Yang ◽  
Huihui Chen ◽  
Mingyue Ren ◽  
Guangwen Chen
Keyword(s):  
Photocatalytic Activity ◽  
Methyl Orange ◽  
Zno Nanoparticles ◽  
Microfluidic System ◽  
Two Stage ◽  
Continuous Synthesis ◽  
System P ◽  
Degradation Of Methyl Orange

Hedgehog-like Ag–ZnO nanoparticles were successfully prepared in a continuous microfluidic system and showed a superior photocatalytic activity in the degradation of methyl orange.

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.

scholarly journals Synthesis and Characterization of Uniform Spherical Nanoporous TiO2Aerogel Templated by Cellulose Alcohol-Gel with Enhanced Photocatalytic Activity

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Zhiming Liu ◽  
Peng Wu ◽  
Shaoli Yang ◽  
Haiying Wang ◽  
Chunde Jin
Keyword(s):  
Electron Microscopy ◽  
Photocatalytic Activity ◽  
Methyl Orange ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Thermal Method ◽  
X Ray ◽  
Double Beam ◽  
Methyl Orange Dye

The spherical nanoporous TiO2aerogels were prepared by a simple ethanol-thermal method, using spherical cellulose alcohol-gel as the template. The morphology, crystalline structure, pore size, specific surface area, and the photocatalytic activity of obtained TiO2aerogel were separately characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), N2adsorption-desorption isotherms, and double beam UV-VIS spectrophotometer. The characteristics of TiO2aerogels presented uniform sphere shape, good internal structural morphology, high specific surface area (ranging from 111.88 to 149.95 m2/g), and good crystalline anatase phase. Moreover, methyl orange dye was used as the target pollutant to characterize the photocatalytic activities and the adsorption performance. The photocatalytic experiment shows that the obtained spherical TiO2aerogels had a higher degradation ratio of 92.9% on methyl orange dye compared with aspherical TiO2aerogels prepared from other concentrations of tetrabutyl orthotitanate (TBOT).

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