Synthesis and characterization of mesoporous tungsten oxides and application of its photo-catalytic activity on photo degradation of methyl orange

2021 ◽  
Vol 232 ◽  
pp. 121-128
Author(s):  
Seo-Hyun Pak ◽  
Chan-gyu Park
Keyword(s):  
Catalytic Activity ◽  
Methyl Orange ◽  
Synthesis And Characterization ◽  
Photo Degradation ◽  
Tungsten Oxides ◽  
Photo Catalytic Activity ◽  
Degradation Of Methyl Orange

scholarly journals Synthesis and Characterization of Erbium Trioxide Nanoparticles as Photo-Catalytic for Degradation of Methyl Orange Dye

2019 ◽  
Author(s):  
Rifat Mohammed Dakhil ◽  
Tayser Sumer Gaaz ◽  
Ahmed Al-Amiery ◽  
Mohd S. Takriff ◽  
Abdul Amir H. Kadhum
Keyword(s):  
Catalytic Activity ◽  
Methyl Orange ◽  
Synthesis And Characterization ◽  
Photo Degradation ◽  
Photo Catalytic Activity ◽  
Xrd Diffraction ◽  
Vis Spectroscopy ◽  
Methyl Orange Dye ◽  
Degradation Of Methyl Orange

Abstract. The present work focuses on the photo-catalytic degradation of methyl orange (MO) on Erbium trioxide nanoparticles Er2O3 NPs. In this study, Er2O3 nanoparticles were synthesized and fully characterized via various techniques including; XRD diffraction, UV-Vis spectroscopy and SEM techniques. The results revealed that, the photo-catalytic activity of the prepared Er2O3 NPs towards methyl orange (MB) photo-degradation was manifested. The optimum efficiency obtained was 16 %.

Enhanced photo catalytic degradation of methyl orange using p–n Co3O4-TiO2 hetero-junction as catalyst

2020 ◽  
Vol 18 (5-6) ◽  
Author(s):  
Muhammad Saeed ◽  
Muhammad Usman ◽  
Muhammad Ibrahim ◽  
Atta ul Haq ◽  
Iltaf Khan ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Methyl Orange ◽  
Catalytic Performance ◽  
Catalytic Degradation ◽  
Contaminated Water ◽  
Impregnation Method ◽  
Photo Degradation ◽  
Photo Catalytic Activity ◽  
Degradation Data ◽  
Degradation Of Methyl Orange

AbstractPhoto catalytic degradation of pollutants is one of the techniques used for treatment of dye contaminated wastewater. TiO2 has attracted much attention as photo catalyst for treatment of contaminated water. In this study, the photo catalytic performance of TiO2 has been enhanced by formation of p–n Co3O4-TiO2 hetero-junction. The p–n Co3O4-TiO2 hetero-junction was prepared by wet incipient impregnation method and characterized by various techniques. The photo catalytic activity of prepared composite was evaluated by photo degradation of methyl orange. The as prepared Co3O4-TiO2 composite was found as effective catalyst than Co3O4 and TiO2. The higher photo catalytic activity was attributed to p–n junction formed between Co3O4 and TiO2. The degradation data was analyzed according to Eley–Rideal mechanism in terms of 1st and 2nd order kinetics.

scholarly journals Synthesis and characterization of silica-supported Preyssler nano particles and its catalytic activity for photodegradation of methyl orange

2009 ◽  
Vol 2 (1) ◽  
pp. 35-41 ◽  
Author(s):  
Fatemeh F. Bamoharram ◽  
Majid M. Heravi ◽  
Mina Roushani ◽  
Maryam R. Toosi ◽  
Ladan Jodeyre
Keyword(s):  
Catalytic Activity ◽  
Methyl Orange ◽  
Nano Particles ◽  
Synthesis And Characterization

ZnO–TiO2: Synthesis, Characterization and Evaluation of Photo Catalytic Activity towards Degradation of Methyl Orange

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Muhammad Saeed ◽  
Muhammad Ibrahim ◽  
Majid Muneer ◽  
Nadia Akram ◽  
Muhammad Usman ◽  
...  
Keyword(s):  
Methyl Orange ◽  
Catalytic Performance ◽  
Impregnation Method ◽  
Order Kinetic ◽  
Photo Degradation ◽  
Photo Catalyst ◽  
Precursor Material ◽  
Langmuir Hinshelwood Mechanism ◽  
Degradation Of Methyl Orange

Abstract Here in, we report the synthesis and characterization of ZnO–TiO2 composite as a potential photo catalyst for photo degradation of methyl orange under UV irradiation. ZnO–TiO2 with 1:1 ratio was synthesized via wet incipient impregnation method using TiO2 and Zn(NO3)2 ⋅ 6H2O as precursor material and the prepared composite was characterized by XRD, EDX and SEM. The synthesized composite was employed as photo catalyst for photo degradation of methyl orange. The photo degradation results showed that ZnO–TiO2 exhibited better catalytic performance than ZnO and TiO2 alone. The methyl orange photo degradation efficiency was determined to be 98, 75 and 60% over ZnO–TiO2, ZnO and TiO2 respectively using 50 mL solution of 100 mg/L at 40 °C for 120 min. The ZnO–TiO2 catalyzed photo degradation of methyl orange followed pseudo-first-order kinetic in terms of Langmuir–Hinshelwood mechanism.

Boron Doped ZnO Nanostructures for Photo Degradation of Methylene Blue, Methyl Orange and Rhodamine B

2021 ◽  
Vol 21 (4) ◽  
pp. 2483-2494
Author(s):  
Aqeel Ahmed Shah ◽  
Ali Dad Chandio ◽  
Asif Ahmed Sheikh
Keyword(s):  
Methylene Blue ◽  
Catalytic Activity ◽  
Methyl Orange ◽  
Rhodamine B ◽  
Recombination Rate ◽  
Charge Recombination ◽  
Photo Degradation ◽  
Photo Catalytic Activity ◽  
Doped Zno ◽  
Nonmetal Doping

The design of sensitive and efficient photo catalyst for the energy and environmental applications with minimum charge recombination rate and excellent photo conversion efficiency is a challenging task. Herein we have developed a nonmetal doping methodology into ZnO crystal using simple solvothermal approach. The boron (B) is induced into ZnO. The doping of B did not make any significant change on the morphology of ZnO nano rods as confirmed by scanning electron microscopy (SEM) without considerable change on periodic arrangement of nanostructures. The existence of B, Zn, and O is shown by energy dispersive spectroscopy (EDS). The X-ray diffraction (XRD) patterns are well matched to the hexagonal phase for both pristine ZnO and B-doped ZnO. The XRD has shown slight dislocation of 2theta degree. The UV-visible spectroscopy was used to measure the optical bandgap and photo catalytic activity for the degradation of organic dyes. The nonmetal doped ZnO has shown potential and outstanding photo catalytic activity for the photo degradation of methylene blue (MB), methyl orange (MO) and rhodamine B in aqueous solution. The photo degradation efficiency of MB, MO and rhodamine B is found to be 96%, 86% and 80% respectively. The enhanced photo catalytic activity of B-doped ZnO is indexed to the inhibited charge recombination rate due to the reduction in the optical bandgap. Based on the obtained results, it can be said that nonmetal doping is excellent provision for the design of active materials for the extended range of applications.

Photo-Catalytic Activity of Ag-N Co-Doped ZnO/CuO Nanocomposite for Degradation of Methyl Orange

2016 ◽  
Vol 32 (1-2) ◽  
pp. 49
Author(s):  
Jemal Mohammed Yasin ◽  
O. P. Yadav ◽  
Abi M. Taddesse
Keyword(s):  
Catalytic Activity ◽  
Methyl Orange ◽  
Band Gap Energy ◽  
Spectroscopic Techniques ◽  
Solution Ph ◽  
Photo Catalytic Activity ◽  
Composite Photocatalysts ◽  
Doped Zno ◽  
Co Doped ◽  
Degradation Of Methyl Orange

Nano-size Ag-N co-doped ZnO-CuO composites have been synthesized and tested for their photo-catalytic activity towards degradation of methyl orange in aqueous solution under visible as well as UV radiations. Crystal structure, surface functional groups, metallic composition and band structure of as-synthesized nano-material were investigated using XRD, FTIR, AAS and UV-Vis spectroscopic techniques, respectively. Ag-N co-doped ZnO-CuO photocatalyst showed higher photo-catalytic activity than Ag- or N-doped and undoped composite photocatalysts. The observed highest activity of Ag-N co-doped ZnO-CuO among the studied photo-catalysts, is attributed to the cumulative effects of lowering of band-gap energy and decrease of recombination rate of photo-generated electrons and holes owing to doped N and Ag, respectively. Effects of photo-catalyst load, solution pH and substrate initial concentration on the degradation of methyl orange have also been studied.

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