scholarly journals Fabrication of a novel core–shell–shell temperature-sensitive magnetic composite with excellent performance for papain adsorption

RSC Advances ◽  
2021 ◽  
Vol 11 (40) ◽  
pp. 24843-24851
Author(s):  
Pengfei Chen ◽  
Shun Yao ◽  
Dongmei Zheng ◽  
Zhiyuan Xu ◽  
Jinling Yu ◽  
...  
Keyword(s):  
Core Shell ◽  
Temperature Sensitive ◽  
Magnetic Composite ◽  
Excellent Performance ◽  
Shell Temperature

A novel core–shell–shell temperature-sensitive magnetic composite was designed. The composites showed excellent performance for papain adsorption and could thermally protect papain.

Uniform core–shell nanobiscuits of Fe7S8@C for lithium-ion and sodium-ion batteries with excellent performance

2018 ◽  
Vol 6 (17) ◽  
pp. 7967-7976 ◽  
Author(s):  
Ludi Shi ◽  
Dongzhi Li ◽  
Jiali Yu ◽  
Huichao Liu ◽  
Yong Zhao ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Surface Coating ◽  
Anode Materials ◽  
Lithium Ion ◽  
Sodium Ion ◽  
Core Shell ◽  
Sodium Ion Batteries ◽  
Excellent Performance

The as-prepared Fe7S8@C exhibits outstanding electrochemical performance as anode materials for LIBs and SIBs owing to the biscuit-like nanostructure and conformal surface coating with carbon.

Core-Shell Structured Fe3O4/PPy Microspheres with High Magnetization for Purification of Plasmid DNA

2013 ◽  
Vol 716 ◽  
pp. 314-319 ◽  
Author(s):  
Hai Hui Jiang ◽  
Yan Zhou ◽  
Xiao Yun Han ◽  
Xin Cheng Chen ◽  
Yun Hua Hou ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Drug Delivery ◽  
Plasmid Dna ◽  
Magnetic Particles ◽  
Interfacial Polymerization ◽  
Core Shell ◽  
Magnetic Composite ◽  
Amino Group ◽  
High Quality ◽  
E Coli

Amino group-functionalized magnetic particles have wide applications in enzyme immobilization, DNA extraction, drug delivery, water purification, catalysis, and sensor. In this paper, Fe3O4/PPy microspheres with a well-defined coreshell structure have been prepared through an interfacial polymerization approach without surfactant. The magnetic composite spheres were characterized with XRD, FTIR, SEM, TEM, and magnetometry techniques, and further tested as the adsorbent to isolate plasmid DNA from Escherichia coli (E. coli) DH5α cells. The magnetic separation yields high-quality plasmid DNA in satisfying productivity as compared to the conventional phenolchloroform extraction.

Phenylboronic acid-functionalized core–shell magnetic composite nanoparticles as a novel protocol for selective enrichment of fructose from a fructose–glucose aqueous solution

2017 ◽  
Vol 41 (22) ◽  
pp. 13399-13407 ◽  
Author(s):  
Lei Gu ◽  
Yun Wang ◽  
Juan Han ◽  
Lei Wang ◽  
Xu Tang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Magnetic Nanoparticles ◽  
Boronic Acid ◽  
Phenylboronic Acid ◽  
Sample Solution ◽  
Core Shell ◽  
Magnetic Composite ◽  
Selective Enrichment ◽  
Functionalized Magnetic Nanoparticles ◽  
First Time

We developed an efficient and mild method for the preparation of boronic acid-functionalized magnetic nanoparticles (MNPs), and the selective separation of fructose from a sample solution was demonstrated for the first time.

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.

A Novel hig E Aptamer Biosensor Base on Core-Shell Fe3O4@Au Magnetic Composite Nanoparticles

2015 ◽  
Vol 1118 ◽  
pp. 170-175
Author(s):  
Guo Yin Huang ◽  
Long Fei Ma ◽  
Ming Yuan Guan ◽  
Jin Tao Liang ◽  
Yong Huang ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Immunoglobulin E ◽  
Reduction Process ◽  
Hydroxylamine Hydrochloride ◽  
Silver Ions ◽  
Response Speed ◽  
Composite Nanoparticles ◽  
Core Shell ◽  
Magnetic Composite ◽  
Au Nps

In this paper, a novel hIg E aptamer biosensor was designed base on the core-shell Fe3O4@Au magnetic composite nanoparticles (Fe3O4@Au NPs). Firstly, Fe3O4@Au NPs were prepared by one-step reduction process with Fe3O4 nanoparticles (Fe3O4 NPs) as magnetic core and hydroxylamine hydrochloride as deoxidizer. Then, the morphology, composition, and properties of Fe3O4@Au NPs were characterized by scanning electron microscope (SEM), fourier translation infrared spectroscopy (FT-IR), vibrating sample magnetometer (VSM) and so on. Lastly, Human immunoglobulin E (hIg E) was used as the model analyte, a hIg E aptamer biosensor was presented which the hIg E antibody is covalently immobilized as the capture probe on Fe3O4@Au NPs surface, and hIg E aptamer was used as the detection probe. After the hIg E antigen was captured, the ascorbic acid 2-phosphate (AAP) formed ascorbic acid (AA) in the presence of alkaline phosphatase (ALP). The AA reduced the silver ions (Ag+) in the solution to silver metal that preferentially deposited on surface of the Fe3O4@Au NPs. The amount of deposited silver could be quantified using the electrochemical methods. The oxidation current of Ag0 was linear with the concertration of hIg E over the range 0.25~2.0 μg/mL. Therefore, the hIg E aptamer biosensor possessed higher sensitivity, low detection limit and rapid response speed.

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