Enhanced structural, optical, and photocatalytic activities of Cd–Co doped Zn ferrites for degrading methyl orange dye under irradiation by visible light

2022 ◽  
Vol 161 ◽  
pp. 110419
Author(s):  
M. Shakil ◽  
Usama Inayat ◽  
N.R. Khalid ◽  
Muhammad Tanveer ◽  
S.S.A. Gillani ◽  
...  
Keyword(s):  
Methyl Orange ◽  
Visible Light ◽  
Photocatalytic Activities ◽  
Methyl Orange Dye ◽  
Co Doped

Synthesis, characterization, and photocatalytic activity of silver and zinc co-doped TiO2 nanoparticle for photodegradation of methyl orange dye in aqueous solution

2019 ◽  
Vol 97 (9) ◽  
pp. 642-650 ◽  
Author(s):  
Gabriel O. Oladipo ◽  
Akinola K. Akinlabi ◽  
Samson O. Alayande ◽  
Titus A.M. Msagati ◽  
Hlengilizwe H. Nyoni ◽  
...  
Keyword(s):  
Methyl Orange ◽  
Pore Size ◽  
Average Pore Size ◽  
Sol Gel ◽  
Average Crystallite Size ◽  
Rutile Phase ◽  
Absorption Bands ◽  
Average Pore ◽  
Methyl Orange Dye ◽  
Co Doped

In this study, TiO2 nanocrystals, 1 mol% Ag-doped TiO2, and 1 mol% Ag and 0.6 mol% Zn co-doped TiO2 powders were synthesized by the sol–gel route. Their photocatalytic activities on methyl orange dye under visible irradiation were investigated. The powders were characterized by X-ray diffraction (XRD), UV–visible spectroscopy (UV–vis), Brunauer–Emmett–Teller (BET), and Fourier transform infrared spectroscopy (FTIR). The XRD results revealed the presence of a rutile phase with an average crystallite size of 9 and 11 nm. The UV–vis spectra showed a red-shift towards a longer wavelength with the corresponding decrease in band gap from 2.9 to 2.5 eV. The BET surface areas of the nanoparticles ranged from 4.7 to 11.8 m2 g−1 with an average pore size between 18.9 and 56.6 nm. The Ag-doped TiO2 has the largest surface area of 11.8 m2 g−1, whereas the Ag–Zn co-doped TiO2 was found to have the highest pore size and volume. The absorption bands at 750–500 cm−1 were attributed to the –O–Ti–O– bond in the TiO2 lattice. The photocatalytic efficiency was highest at an optimum pH of 4.1 for Ag–Zn co-doped TiO2. The results confirmed that Ag-doped and Ag–Zn co-doped TiO2 were more effective than pure TiO2. The kinetic data were fitted into a pseudo first-order equation using a Langmuir–Hinshelwood kinetic model.

Novel biomolecule-capped CdTe nanoparticles for highly efficient photodegradation of methyl orange dye under visible-light irradiation

2020 ◽  
Vol 275 ◽  
pp. 128167
Author(s):  
G. Palanisamy ◽  
Ba-Son Nguyen ◽  
Vu-Quynh Nguyen ◽  
Van-Huy Nguyen ◽  
K. Bhuvaneswari ◽  
...  
Keyword(s):  
Methyl Orange ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Light Irradiation ◽  
Highly Efficient ◽  
Cdte Nanoparticles ◽  
Methyl Orange Dye

scholarly journals Facile Solvothermal Synthesis of Hollow BiOBr Submicrospheres with Enhanced Visible-Light-Responsive Photocatalytic Performance

2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Linrui Hou ◽  
Yawei Niu ◽  
Fan Yang ◽  
Fengyue Ge ◽  
Changzhou Yuan
Keyword(s):  
Waste Water ◽  
Methyl Orange ◽  
Water Treatment ◽  
Visible Light ◽  
Solvothermal Synthesis ◽  
Photocatalytic Performance ◽  
Waste Water Treatment ◽  
Commercial Application ◽  
Visible Light Absorption ◽  
Photocatalytic Activities

In this work, hierarchical hollow BiOBr submicrospheres (HBSMs) were successfully prepared via a facile yet efficient solvothermal strategy. Remarkable effects of solvents upon the crystallinities, morphologies, and microstructures of the BiOBr products were systematically investigated, which revealed that the glycerol/isopropanol volumetric ratio played a significant role in the formation of hollow architecture. Accordingly, the underlying formation mechanism of the hollow submicrospheres was tentatively put forward here. Furthermore, the photocatalytic activities of the resulting HBSMs were evaluated in detail with photocatalytic degradation of the organic methyl orange under visible light irradiation. Encouragingly, the as-obtained HBSMs with striking recyclability demonstrated excellent visible-light-responsive photocatalytic performance, which benefits from their large surface area, effective visible light absorption, and unique hollow feature, highlighting their promising commercial application in waste water treatment.

Synthesis and visible photocatalytic activities of a Au@Ag@ZnO triple layer core–shell nanostructure

2014 ◽  
Vol 38 (9) ◽  
pp. 4197-4203 ◽  
Author(s):  
Mrinmoy Misra ◽  
Pawan Kapur ◽  
Manoj Kumar Nayak ◽  
MadanLal Singla
Keyword(s):  
Methyl Orange ◽  
Visible Light ◽  
Core Shell ◽  
Photo Degradation ◽  
Photocatalytic Mechanism ◽  
Triple Layer ◽  
Photocatalytic Activities ◽  
Kinetics Of

Visible light induced photocatalytic mechanism of Au@Ag@ZnO core–shell nanostructure and kinetics of methyl orange (MO) photo degradation by ZnO, Au@ZnO, Au@Ag@ZnO and TiO2.

scholarly journals Synthesis and characterization of La1-xCexNiO3 with enhanced visible light photocatalytic activities

2019 ◽  
Vol 118 ◽  
pp. 01005
Author(s):  
Ying-ying Li ◽  
Jin-zhou Li ◽  
Yong-chun Liu
Keyword(s):  
Methyl Orange ◽  
Visible Light ◽  
Irradiation Time ◽  
Xylenol Orange ◽  
Sol Gel ◽  
Operational Parameters ◽  
X Ray Diffraction ◽  
Alizarin Red ◽  
Alizarin Yellow ◽  
Photocatalytic Activities

A series of La1-xCexNiO3 photocatalysts with different content of cerium element have been synthesized by sol-gel method. The as-prepared products were characterized by powder X-ray diffraction (XRD) and scanning electron microscopy (SEM). The photocatalytic activities of these La1-xCexNiO3 composites under visible-light irradiation were evaluated by the degradation of methyl orange (MO). The effect of important operational parameters such as catalyst amount, reaction temperature, irradiation time, and comparison of photocatalytic activity with different dyes including methyl orange, alizarin red, alizarin yellow, xylenol orange were also studied. The results revealed that the La0.8Ce0.2NiO3 (LCNO) composites exhibited much higher photocatalytic activities than pure LaNiO3 (LNO).

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