scholarly journals Highly Porous and Ultra-Lightweight Aero-Ga2O3: Enhancement of Photocatalytic Activity by Noble Metals

Materials ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 1985
Author(s):  
Irina Plesco ◽  
Vladimir Ciobanu ◽  
Tudor Braniste ◽  
Veaceslav Ursaki ◽  
Florian Rasch ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Noble Metals ◽  
Hybrid Structures ◽  
Blue Dye ◽  
Light Illumination ◽  
Methylene Blue Dye ◽  
Visible Light Illumination ◽  
New Type ◽  
Highly Porous

A new type of photocatalyst is proposed on the basis of aero-β-Ga2O3, which is a material constructed from a network of interconnected tetrapods with arms in the form of microtubes with nanometric walls. The aero-Ga2O3 material is obtained by annealing of aero-GaN fabricated by epitaxial growth on ZnO microtetrapods. The hybrid structures composed of aero-Ga2O3 functionalized with Au or Pt nanodots were tested for the photocatalytic degradation of methylene blue dye under UV or visible light illumination. The functionalization of aero-Ga2O3 with noble metals results in the enhancement of the photocatalytic performances of bare material, reaching the performances inherent to ZnO while gaining the advantage of the increased chemical stability. The mechanisms of enhancement of the photocatalytic properties by activating aero-Ga2O3 with noble metals are discussed to elucidate their potential for environmental applications.

scholarly journals Effect of Oxalic Acid Leaching on Photocatalytic Activity of Natural Sphalerite

2020 ◽  
Author(s):  
Chukwunonso Onyenanu ◽  
Lovet Emembolu
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Irradiation Time ◽  
Acid Leaching ◽  
Blue Dye ◽  
Light Illumination ◽  
X Ray Diffraction ◽  
X Ray ◽  
Visible Light Illumination

Abstract Photocatalytic activity of the natural semiconducting sphalerite mineral from Abuni, Nasarawa State, Nigeria was studied for the degradation of methylene blue (MB). Natural Sphalerite as a visible – light responsive photocatalyst was characterized by X ray diffraction (XRD), X ray fluorescence (XRF) and surface area analysis. To further enhance the photocatalytic activity of natural Sphalerite, the chemical composition of the sphalerite was varied via leaching with oxalic acids. The photocatalytic activity of the Natural sphalerite, leached sphalerite and as well as the calcined leachates was tested for MB degradation under visible light illumination. The result shows a very high percentage of MB degradation by natural sphalerite after 60mintues of light irradiation time. A composite of ZnO -α –Fe2O3 -ϒ-Fe2O3 with traces amount of MoO and MnO2 was synthesized by calcination of the obtained leachates at 1000°C for 4hours. The photocatalytic degradation of methylene blue dye follows pseudo first order kinetics.

Comparison of Adsorption Capability and Photocatalytic Activity for Methylene Blue Decomposition of LiInO2 with NaInO2

2006 ◽  
Vol 317-318 ◽  
pp. 819-822
Author(s):  
Jun Hu Wang ◽  
Toru Nonami
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Fine Particles ◽  
Composite Particles ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Co Catalyst ◽  
Photocatalytic Activities ◽  
Adsorption Capability

In the present study, Pt, NiO, and RuO2 fine particles as co-catalyst were loaded on the LiInO2 surface by different methods for enhancing its adsorption capability and photocatalytic activity for methylene blue dye (MB) decomposition. Clear adsorption capability and marked photocatalytic activity for MB decomposition were confirmed on the co-catalyst loaded LiInO2 composite particles. Comparing with that of LiINO2, the previously reported NaInO2 photocatalyst had stronger adsorption capability and higher photocatalytic activity. However, the adsorption capabilities and the photocatalytic activities were separately in the same order of RuO2/AInO2 > Pt/AInO2 > AInO2 > NiO/AInO2 and Pt/LiInO2 > RuO2/LiInO2 > NiO/LiInO2 > LiInO2 for the two promising AInO2 (A = Li+ or Na+) photocatalyst.

Visible-light active tin selenide nanostructures: synthesis, characterization and photocatalytic activity

2017 ◽  
Vol 41 (23) ◽  
pp. 14689-14695 ◽  
Author(s):  
Muhammad Naeem Ashiq ◽  
Samia Irshad ◽  
Muhammad Fahad Ehsan ◽  
Sidra Rehman ◽  
Saima Farooq ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Reaction Mechanism ◽  
Visible Light ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Tin Selenide ◽  
Mechanism Of Degradation ◽  
Visible Light Active

Photocatalytic activity and proposed reaction mechanism of degradation of Methylene Blue dye by SnSe nanostructures.

Enhanced photocatalytic activity of ethylenediamine-assisted tin oxide (SnO2) nanorods for methylene blue dye degradation

2020 ◽  
Vol 276 ◽  
pp. 128173 ◽  
Author(s):  
K. Bhuvaneswari ◽  
Ba-Son Nguyen ◽  
Van-Huy Nguyen ◽  
Vu-Quynh Nguyen ◽  
Quang-Hung Nguyen ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Tin Oxide ◽  
Dye Degradation ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Sno2 Nanorods

scholarly journals Synthesis of silver-loaded ZnO nanorods and their enhanced photocatalytic activity and photoconductivity study

2019 ◽  
Vol 18 (6) ◽  
pp. 1503-1511 ◽  
Author(s):  
Prashant V. Pimpliskar ◽  
Shrinivas C. Motekar ◽  
Govind G. Umarji ◽  
Wonyoung Lee ◽  
Sudhir S. Arbuj
Keyword(s):  
Methylene Blue ◽  
Silver Nanoparticles ◽  
Photocatalytic Activity ◽  
Dye Degradation ◽  
Zno Nanorods ◽  
Blue Dye ◽  
Methylene Blue Dye

The photocatalytic activity of ZnO nanorods towards methylene blue dye degradation was enhanced by loading 0.5, 1, 5, and 10 mol% silver nanoparticles on the ZnO.

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