scholarly journals Correction to: Effective adsorptive performance of Fe3O4@SiO2 core shell spheres for methylene blue: kinetics, isotherm and mechanism

2019 ◽  
Vol 26 (6) ◽  
pp. 1889-1889
Author(s):  
Fazle Subhan ◽  
Sobia Aslam ◽  
Zifeng Yan ◽  
Mawaz Khan ◽  
U. J. Etim ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Core Shell

Synergistic and Competitive Adsorption of Methylene Blue and Rhodamine B on Core-shell Magnetic Manganese Dioxide Nanocomposites

2017 ◽  
Vol 13 (6) ◽  
Author(s):  
Linshan Wang ◽  
Cholhwan Kim ◽  
Xinyue Zhang ◽  
Carlos Fernandez ◽  
Ting Sun ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Manganese Dioxide ◽  
Rhodamine B ◽  
Competitive Adsorption ◽  
Core Shell

Synthesis of Carbon-Sphere@TiO2/Cu Core-Shell Composites and the Studies on their Photocatalytic and Antibacterial Properties

2013 ◽  
Vol 664 ◽  
pp. 574-577
Author(s):  
Hong Yan Wang ◽  
Hong Liang Li ◽  
Hui Liu ◽  
Ai Ping Fu ◽  
Guang Wei Kan ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Visible Light ◽  
Spray Drying ◽  
Visible Light Irradiation ◽  
Elevated Temperatures ◽  
Antibacterial Properties ◽  
Core Shell ◽  
Carbon Sphere ◽  
Melamine Formaldehyde ◽  
Antibacterial Studies

Non-contacting (rattle-type) carbon-sphere@TiO2/Cu core-shell composites were prepared through the spray drying technique combined with calcinations using melamine formaldehyde (MF) microspheres as core templates, and TiO2colloid and cupric salt as shell precursors. After the calcination of the as-dried MF@TiO2/cupric salt core-shell spheres at elevated temperatures under nitrogen, rattle-type carbon-sphere@TiO2/Cu core-shell composites were derived with relative uniform sizes. Photocatalytic tests showed that the composites obtained at 550 °C exhibited higher efficiency than those obtained at 700 and 800°C and also higher than the P25 commercial TiO2for the degradation of methylene blue (MB) under visible light irradiation. Antibacterial studies revealed that the rattle-type composites owned excellent antibacterial ability and were stable and reusable.

Synthesis of Novel Core-Shell Structured Hydroxyapatite/Meso-Silica for Removal of Methylene Blue from Aqueous Solutions

2012 ◽  
Vol 463-464 ◽  
pp. 543-547 ◽  
Author(s):  
Cheng Feng Li ◽  
Xiao Lu Ge ◽  
Shu Guang Liu ◽  
Fei Yu Liu
Keyword(s):  
Methylene Blue ◽  
Aqueous Solutions ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Low Cost ◽  
Nitrogen Adsorption ◽  
Precipitation Method ◽  
Core Shell ◽  
Adsorption Desorption

Core-shell structured hydroxyapatite (HA)/meso-silica was prepared and used as absorbance of methylene blue (MB). HA/meso-silica was synthesized in three steps: preparation of nano-sized HA by wet precipitation method, coating of dense silica and deposition of meso-silica shell on HA. As-received samples were characterized by Fourier transformed infare spectra, small angle X-ray diffraction, nitrogen adsorption-desorption isotherm and transmission electron microscopy. A wormhole framework mesostructure was found for HA/meso-silica. The specific surface area and pore volume were 128 m2•g-1 and 0.36 cm3•g-1, respectively. From the adsorption isotherm, HA/meso-silica with the great specific surface area exhibited a prominent adsorption capacity of MB (134.0 mg/g) in comparison with bare HA (0 mg/g). This study might shed light on surface modification of conventional low-cost adsorbents for removal of organic pollutants from aqueous solutions.

Titanate nanowire/NiO nanoflake core/shell heterostructured nanonanocomposite catalyst for methylene blue photodegradation

RSC Advances ◽  
2016 ◽  
Vol 6 (72) ◽  
pp. 67827-67832 ◽  
Author(s):  
W. X. Chen ◽  
J. S. Yu ◽  
W. Hu ◽  
Z. L. Chen ◽  
H. Memon ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Core Shell ◽  
Titanate Nanowires

A core/shell heterostructured nanonanocomposite catalyst based on NiO nanoflakes and titanate nanowires (TNWs) was fabricated.

Reusable hybride CoFe2O4-ZnO hollow nanosphere photocatalysts

2012 ◽  
Vol 1406 ◽  
Author(s):  
A. Wilson ◽  
S. R. Mishra ◽  
B. K. Rai ◽  
R.K. Gupta ◽  
K. Ghosh
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Shell Thickness ◽  
Hybrid Structure ◽  
Core Shell ◽  
Magnetic Composite ◽  
Hollow Nanosphere ◽  
Carbon Nanospheres ◽  
Good Repeatability ◽  
Magnetically Separable

AbstractMagnetically separable and reusable core-shell CoFe2O4-ZnO photocatalyst nanospheres were prepared via hydrothermal synthesis technique using glucose derived carbon nanospheres as template. The morphology and phase of core-shell hybrid structure of CoFe2O4-ZnO was assessed via TEM, and XRD. The UV-vis photocatalytic activity of the composite was assessed via measuring the degradation rate of modeled pollutant methylene blue in water. The magnetic composite showed high UV photocatalytic activity for the degradation of methylene blue. The photocatalytic activity was found to be ZnO shell thickness dependent. Thicker ZnO shells lead to higher rate of photocatalytic activity. Hybrid nanospheres recovered using external magnetic field demonstrated good repeatability of photocatalytic activity. These results promise the reusability of hybrid nanospheres for photocatalytic activity.

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