A novel flower-like MnO2 nanowires for rapid removal of methylene blue

2020 ◽  
pp. 1-10
Author(s):  
Dongyang Zhou ◽  
Bin Gu ◽  
Jingjing Wang ◽  
Lili Ren ◽  
Guoguang Chen ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Rapid Removal ◽  
Mno2 Nanowires

Ultralong α-MnO2 Nanowires Capable of Catalytically Degrading Methylene Blue at Low Temperature

2018 ◽  
Vol 148 (9) ◽  
pp. 2822-2829 ◽  
Author(s):  
Jiali Fu ◽  
Chengcheng Wang ◽  
Zhenyu Feng ◽  
Renjie Zhang
Keyword(s):  
Methylene Blue ◽  
Low Temperature ◽  
Mno2 Nanowires

scholarly journals One-Pot Sonochemical Synthesis of ZnO Nanoparticles for Photocatalytic Applications, Modelling and Optimization

Materials ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 14 ◽  
Author(s):  
Muhammad Tayyab Noman ◽  
Michal Petru ◽  
Jiří Militký ◽  
Musaddaq Azeem ◽  
Muhammad Azeem Ashraf
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
X Ray Diffraction ◽  
Zno Nps ◽  
One Pot ◽  
Chemical Reagents ◽  
Rapid Removal ◽  
Photocatalytic Applications

This present study proposed a successful one pot synthesis of zinc oxide nanoparticles (ZnO NPs) and their optimisation for photocatalytic applications. Zinc chloride (ZnCl2) and sodium hydroxide (NaOH) were selected as chemical reagents for the proposed study. The design of this experiment was based on the reagents’ amounts and the ultrasonic irradiations’ time. The results regarding scanning electron microscopy (SEM), X-ray diffraction (XRD) and Raman spectroscopy confirmed the presence of ZnO NPs with pure hexagonal wurtzite crystalline structure in all synthesised samples. Photocatalytic activity of the developed samples was evaluated against methylene blue dye solution. The rapid removal of methylene blue dye indicated the higher photocatalytic activity of the developed samples than untreated samples. Moreover, central composite design was utilised for statistical analysis regarding the obtained results. A mathematical model for the optimisation of input conditions was designed to predict the results at any given point. The role of crystallisation on the photocatalytic performance of developed samples was discussed in detail in this novel study.

A SEM and Light Microscope Study of the Epidermal Leaf Structures of the Carnivorous Plant, Sarracenia purpurea, L.

1971 ◽  
Vol 29 ◽  
pp. 358-359
Author(s):  
B. J. Panessa ◽  
J. F. Gennaro
Keyword(s):  
Methylene Blue ◽  
Toluidine Blue ◽  
Outer Surface ◽  
Microscope Study ◽  
Light Microscope ◽  
Carnivorous Plant ◽  
Sarracenia Purpurea ◽  
Inner Surface

Tissue from the hood and sarcophagus regions were fixed in 6% glutaraldehyde in 1 M.cacodylate buffer and washed in buffer. Tissue for SEM was partially dried, attached to aluminium targets with silver conducting paint, carbon-gold coated(100-500Å), and examined in a Kent Cambridge Stereoscan S4. Tissue for the light microscope was post fixed in 1% aqueous OsO4, dehydrated in acetone (4°C), embedded in Epon 812 and sectioned at ½u on a Sorvall MT 2 ultramicrotome. Cross and longitudinal sections were cut and stained with PAS, 0.5% toluidine blue and 1% azure II-methylene blue. Measurements were made from both SEM and Light micrographs.The tissue had two structurally distinct surfaces, an outer surface with small (225-500 µ) pubescent hairs (12/mm2), numerous stoma (77/mm2), and nectar glands(8/mm2); and an inner surface with large (784-1000 µ)stiff hairs(4/mm2), fewer stoma (46/mm2) and larger, more complex glands(16/mm2), presumably of a digestive nature.

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