scholarly journals Hybridization of 2D MoS 2 Nanoplatelets and PtAu Hybrid Nanoparticles for the SERS Enhancement of Methylene Blue (Adv. Mater. Interfaces 21/2021)

2021 ◽  
Vol 8 (21) ◽  
pp. 2170123
Author(s):  
Shusen Lin ◽  
Rutuja Mandavkar ◽  
Rakesh Kulkarni ◽  
Sanchaya Pandit ◽  
Shalmali Burse ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Hybrid Nanoparticles ◽  
Sers Enhancement

Hybridization of 2D MoS 2 Nanoplatelets and PtAu Hybrid Nanoparticles for the SERS Enhancement of Methylene Blue

2021 ◽  
pp. 2101084
Author(s):  
Shusen Lin ◽  
Rutuja Mandavkar ◽  
Rakesh Kulkarni ◽  
Sanchaya Pandit ◽  
Shalmali Burse ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Hybrid Nanoparticles ◽  
Sers Enhancement

scholarly journals A Green and Facile Approach for Synthesis of Starch-Pectin Magnetite Nanoparticles and Application by Removal of Methylene Blue from Textile Effluent

2019 ◽  
Vol 2019 ◽  
pp. 1-12 ◽  
Author(s):  
Mih Venasius Nsom ◽  
Ekane Peter Etape ◽  
Josepha Foba Tendo ◽  
Beckley Victorine Namond ◽  
Paul T. Chongwain ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Fourier Transform Infrared Spectroscopy ◽  
Ph Value ◽  
Polymer Concentration ◽  
Fourier Transform Infrared ◽  
Hybrid Nanoparticles ◽  
Blue Dye ◽  
Methylene Blue Dye

Pectin-starch magnetite hybrid nanoparticles were fabricated, characterized, and evaluated as potential absorbents for methylene blue dye based on recycling water from the textile industry. The nanocomposite adsorbent was synthesized with the iron salt coprecipitation method, and the precipitates obtained were sponge-like. The effects of a pectin : starch ratio in the absorbent and the amount of methylene blue adsorbed were investigated. The nanocomposites obtained were characterized using a Fourier-transform infrared spectroscopy (FTIR), before and after methylene blue adsorption. Fourier-transform infrared spectroscopy (FTIR) spectra provided the evidence that the starch-pectin iron oxide hybrid nanoparticles were successfully synthesized. It also indicated that the hybrid nanoparticles actually absorbed the methylene blue dye from the effluent. PXRD results showed that the synthesized hybrid composite adopted the spinel microstructure of Fe3O4 though the crystallinity of the composite decreased with an increase in the pectin : starch ratio. Furthermore, calculations based on PXRD showed that the synthesized powders were nanoparticles. The amount of adsorbed dye by hybrid adsorbent increased with an increase in the starch : pectin ratio, and the increase was better observed at a low polymer concentration of 18%. The amount of adsorbed dye by hybrid adsorbent was high at high pH and low at low pH value which attested to the ion exchange and electrostatic force mechanism during the adsorption process. Finally, the capacity of the absorbent decreased with an increase in temperature.

scholarly journals Visible Light-Active CdS/TiO2 Hybrid Nanoparticles Immobilized on Polyacrylonitrile Membranes for the Photodegradation of Dyes in Water

2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Pardon Nyamukamba ◽  
Makwena Justice Moloto ◽  
Henry Mungondori
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Visible Region ◽  
Cadmium Sulphide ◽  
Sem Analysis ◽  
Hybrid Nanoparticles ◽  
Blue Dye ◽  
Phase Inversion Technique ◽  
Crystallite Sizes

Reusable photocatalytic polyacrylonitrile membrane-supported cadmium sulphide/titanium dioxide hybrid nanoparticles (CdS/TiO2-PAN) were prepared using a dry-wet phase inversion technique. Scanning electron microscopy (SEM) analysis revealed that the photocatalytic membranes had a porous sublayer, a compact top layer, and that, some of the nanoparticles were not encapsulated by the membranes. The average crystallite sizes of the CdS, TiO2, and CdS/TiO2 hybrid nanoparticles were 3.41 nm, 10.47 nm, and 12.17 nm, respectively. The combination of CdS and TiO2 nanoparticles led to a red shift (band gap; ca. 2.6 eV) of the absorption band and extended the optical absorption spectrum into the visible region relative to TiO2. The photocatalytic activity of CdS/TiO2-PAN membranes was explored in the degradation of methylene blue dye under visible light irradiation, and the results revealed that the best photocatalytic performance was achieved by 0.1 g CdS/TiO2-PAN photocatalytic membrane with 5% loading of the CdS/TiO2 hybrid nanoparticles, which degraded 66.29% of methylene blue in 210 minutes at 25°C and pH 8.5. It was found that the optimum loading of nanoparticles in the membranes was 0.1 g. All the photocatalytic membranes showed an insignificant decrease in the photocatalytic activity when used repeatedly. According to literature, CdS/TiO2-PAN photocatalytic membranes have not been prepared before for the purpose of treating simulated wastewater.

scholarly journals Facile method to synthesize magnetic iron oxides/TiO2 hybrid nanoparticles and their photodegradation application of methylene blue

2011 ◽  
Vol 6 (1) ◽  
pp. 533 ◽  
Author(s):  
Wei Wu ◽  
Xiangheng Xiao ◽  
Shaofeng Zhang ◽  
Feng Ren ◽  
Changzhong Jiang
Keyword(s):  
Methylene Blue ◽  
Iron Oxides ◽  
Hybrid Nanoparticles

scholarly journals Dependence of SERS enhancement on the chemical composition and structure of Ag/Au hybrid nanoparticles

2016 ◽  
Vol 145 (5) ◽  
pp. 054706 ◽  
Author(s):  
Elise Chaffin ◽  
Ryan T. O’Connor ◽  
James Barr ◽  
Xiaohua Huang ◽  
Yongmei Wang
Keyword(s):  
Chemical Composition ◽  
Hybrid Nanoparticles ◽  
Sers Enhancement ◽  
Composition And Structure

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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