Adsorption mechanism of methylene blue from water using core-shell structured magnetic Mn0.6Zn0.4Fe2O4@SiO2 as efficient recyclable adsorbent

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.

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

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.463-464.543 ◽

2012 ◽

Vol 463-464 ◽

pp. 543-547 ◽

Cited By ~ 2

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.

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Electrospun core-shell polyamide 6/chitosan-Fe3+ composite fibers: An efficient and recyclable adsorbent for removal of antibiotic

Materials Letters ◽

10.1016/j.matlet.2016.09.011 ◽

2016 ◽

Vol 185 ◽

pp. 286-289 ◽

Cited By ~ 4

Author(s):

Linjie Song ◽

Qingliang You ◽

Ji Li ◽

Qingrong Cheng ◽

Guiying Liao ◽

...

Keyword(s):

Polyamide 6 ◽

Core Shell ◽

Composite Fibers ◽

Recyclable Adsorbent

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COMPREHENSIVE UTILIZATION OF PHOSPHOGYPSUM: ADSORPTION OF METHYLENE BLUE AND ITS APPLICATION IN BRICKS

Surface Review and Letters ◽

10.1142/s0218625x2150075x ◽

2021 ◽

pp. 2150075

Author(s):

YA GAO ◽

DI SUN ◽

CHENGLIANG HAN ◽

JUNJUN HUANG

Keyword(s):

Methylene Blue ◽

Adsorption Mechanism ◽

Raw Material ◽

Particle Diffusion ◽

Kinetic Behavior ◽

Maximum Capacity ◽

Comprehensive Utilization ◽

Monolayer Adsorption ◽

Intra Particle Diffusion ◽

The One

In this work, comprehensive utilization of phosphogypsum was developed. Methylene blue (MB) in aqueous solution was adsorbed by waste phosphogypsum (PG), and then the MB-adsorbed PG was used to the fabrication of PG bricks. The adsorption mechanism and the strength of PG bricks also have been studied. The dye maximum capacity of PG monolayer adsorption was found to be 0.2[Formula: see text]mg/g. The kinetic behavior is more accordant with the intra-particle diffusion equation. The MB-adsorbed PG could be effectively used as a raw material for building material. The mechanical properties of PG bricks were little different from the one of the water-washed PG bricks. The 2h-flexural and compressing strengths were about 2.8[Formula: see text]MPa and 6[Formula: see text]MPa, the dry-flexural and compressing strengths were about 5[Formula: see text]MPa and 20[Formula: see text]MPa.

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