Magnetic core–shell Fe3O4@C-SO3H nanoparticle catalyst for hydrolysis of cellulose

Background: Enzymatic hydrolysis of cellulose is an expensive approach due to the high cost of an enzyme involved in the process. The goal of the current study was to apply magnetic nanomaterials as a support for immobilization of enzyme, which helps in the repeated use of immobilized enzyme for hydrolysis to make the process cost-effective. In addition, it will also provide stability to enzyme and increase its catalytic activity. Objective: The main aim of the present study is to immobilize cellulase enzyme on Magnetic Nanoparticles (MNPs) in order to enable the enzyme to be re-used for clean sugar production from cellulose. Methods: MNPs were synthesized using chemical precipitation methods and characterized by different techniques. Further, cellulase enzyme was immobilized on MNPs and efficacy of free and immobilized cellulase for hydrolysis of cellulose was evaluated. Results: Enzymatic hydrolysis of cellulose by immobilized enzyme showed enhanced catalytic activity after 48 hours compared to free enzyme. In first cycle of hydrolysis, immobilized enzyme hydrolyzed the cellulose and produced 19.5 ± 0.15 gm/L of glucose after 48 hours. On the contrary, free enzyme produced only 13.7 ± 0.25 gm/L of glucose in 48 hours. Immobilized enzyme maintained its stability and produced 6.15 ± 0.15 and 3.03 ± 0.25 gm/L of glucose in second and third cycle, respectively after 48 hours. Conclusion: This study will be very useful for sugar production because of enzyme binding efficiency and admirable reusability of immobilized enzyme, which leads to the significant increase in production of sugar from cellulosic materials.

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In Situ Microscopy for In-line Monitoring of the Enzymatic Hydrolysis of Cellulose

Analytical Chemistry ◽

10.1021/ac4008495 ◽

2013 ◽

Vol 85 (17) ◽

pp. 8121-8126 ◽

Cited By ~ 11

Author(s):

Britta Opitz ◽

Andreas Prediger ◽

Christian Lüder ◽

Marrit Eckstein ◽

Lutz Hilterhaus ◽

...

Keyword(s):

Enzymatic Hydrolysis ◽

Enzymatic Hydrolysis Of Cellulose ◽

Hydrolysis Of Cellulose ◽

Hydrolysis Of

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The Synthesis and Characterization of Fe2O3@SiO2-SO3H Nanofibers as a Novel Magnetic Core-shell Catalyst for Formamidine and Formamide Synthesis

Heliyon ◽

10.1016/j.heliyon.2021.e07165 ◽

2021 ◽

pp. e07165

Author(s):

Hakimeh Ziyadi ◽

Mitra Baghali ◽

Akbar Heydari

Keyword(s):

Magnetic Core ◽

Synthesis And Characterization ◽

Core Shell

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Enhanced Hydrolysis of Cellulose to Reducing Sugars on Kaolinte Clay Activated by Mineral Acid

Catalysis Letters ◽

10.1007/s10562-020-03497-1 ◽

2021 ◽

Author(s):

Yuxiao Dong ◽

Dongshen Tong ◽

Laibin Ren ◽

Xingtao Chen ◽

Hao Zhang ◽

...

Keyword(s):

Reducing Sugars ◽

Mineral Acid ◽

Hydrolysis Of Cellulose ◽

Hydrolysis Of

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Enhanced visible-light photocatalytic activity and recyclability of magnetic core-shell Fe3O4@SiO2@BiFeO3–sepiolite microspheres for organic pollutants degradation

Journal of Molecular Liquids ◽

10.1016/j.molliq.2021.116566 ◽

2021 ◽

pp. 116566

Author(s):

Gang Su ◽

Lihua Liu ◽

Qiujuan Kuang ◽

Xing Liu ◽

Wenhao Dong ◽

...

Keyword(s):

Photocatalytic Activity ◽

Visible Light ◽

Organic Pollutants ◽

Magnetic Core ◽

Core Shell ◽

Visible Light Photocatalytic Activity ◽

Visible Light Photocatalytic

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Fabrication of copper(II)-coated magnetic core-shell nanoparticles Fe3O4@SiO2-2-aminobenzohydrazide and investigation of its catalytic application in the synthesis of 1,2,3-triazole compounds

Scientific Reports ◽

10.1038/s41598-021-81632-7 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

H. Rajabi-Moghaddam ◽

M. R. Naimi-Jamal ◽

M. Tajbakhsh

Keyword(s):

High Efficiency ◽

Click Reaction ◽

Magnetic Core ◽

Core Shell ◽

Isatoic Anhydride ◽

Shell Nanoparticles ◽

Triazole Derivatives ◽

Catalytic Application ◽

Ft Ir ◽

Core Shell Nanoparticles

AbstractIn the present work, an attempt has been made to synthesize the 1,2,3-triazole derivatives resulting from the click reaction, in a mild and green environment using the new copper(II)-coated magnetic core–shell nanoparticles Fe3O4@SiO2 modified by isatoic anhydride. The structure of the catalyst has been determined by XRD, FE-SEM, TGA, VSM, EDS, and FT-IR analyzes. The high efficiency and the ability to be recovered and reused for at least up to 6 consecutive runs are some superior properties of the catalyst.

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Molecularly Imprinted Synthetic Glucosidase for the Hydrolysis of Cellulose in Aqueous and Nonaqueous Solutions

Journal of the American Chemical Society ◽

10.1021/jacs.1c01352 ◽

2021 ◽

Author(s):

Xiaowei Li ◽

Milad Zangiabadi ◽

Yan Zhao

Keyword(s):

Nonaqueous Solutions ◽

Molecularly Imprinted ◽

Hydrolysis Of Cellulose ◽

Hydrolysis Of

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2-aminopyridine functionalized magnetic core-shell Fe3O4@polypyrrole composite for removal of Mn (VII) from aqueous solution by double-layer adsorption

Separation and Purification Technology ◽

10.1016/j.seppur.2021.119455 ◽

2021 ◽

pp. 119455

Author(s):

Mingming Zheng ◽

Yudi Wei ◽

Jiajia Ren ◽

Bo Dai ◽

Wenlong luo ◽

...

Keyword(s):

Aqueous Solution ◽

Double Layer ◽

Magnetic Core ◽

Core Shell ◽

Layer Adsorption ◽

Polypyrrole Composite

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Removal of Cd(II) from Micro-Polluted Water by Magnetic Core-Shell Fe3O4@Prussian Blue

Molecules ◽

10.3390/molecules26092497 ◽

2021 ◽

Vol 26 (9) ◽

pp. 2497

Author(s):

Xinxin Long ◽

Huanyu Chen ◽

Tijun Huang ◽

Yajing Zhang ◽

Yifeng Lu ◽

...

Keyword(s):

Prussian Blue ◽

Co Adsorption ◽

Magnetic Core ◽

Diameter Distribution ◽

Polluted Water ◽

Core Shell ◽

Freundlich Model ◽

Rate Limiting Step ◽

Rate Limiting

A novel core-shell magnetic Prussian blue-coated Fe3O4 composites (Fe3O4@PB) were designed and synthesized by in-situ replication and controlled etching of iron oxide (Fe3O4) to eliminate Cd (II) from micro-polluted water. The core-shell structure was confirmed by TEM, and the composites were characterized by XRD and FTIR. The pore diameter distribution from BET measurement revealed the micropore-dominated structure of Fe3O4@PB. The effects of adsorbents dosage, pH, and co-existing ions were investigated. Batch results revealed that the Cd (II) adsorption was very fast initially and reached equilibrium after 4 h. A pH of 6 was favorable for Cd (II) adsorption on Fe3O4@PB. The adsorption rate reached 98.78% at an initial Cd (II) concentration of 100 μg/L. The adsorption kinetics indicated that the pseudo-first-order and Elovich models could best describe the Cd (II) adsorption onto Fe3O4@PB, indicating that the sorption of Cd (II) ions on the binding sites of Fe3O4@PB was the main rate-limiting step of adsorption. The adsorption isotherm well fitted the Freundlich model with a maximum capacity of 9.25 mg·g−1 of Cd (II). The adsorption of Cd (II) on the Fe3O4@PB was affected by co-existing ions, including Cu (II), Ni (II), and Zn (II), due to the competitive effect of the co-adsorption of Cd (II) with other co-existing ions.

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Multifunktionale bakterielle Nanomagnete für Biotechnologie und Medizin

BIOspektrum ◽

10.1007/s12268-021-1593-5 ◽

2021 ◽

Vol 27 (4) ◽

pp. 442-444

Author(s):

Frank Mickoleit ◽

Sabine Rosenfeldt ◽

Anna S. Schenk ◽

Dirk Schüler ◽

René Uebe

Keyword(s):

Particle Production ◽

Magnetotactic Bacteria ◽

Magnetic Core ◽

High Yield ◽

Core Shell ◽

Shell Nanoparticles ◽

Magnetospirillum Gryphiswaldense ◽

Core Shell Nanoparticles ◽

Genetic Toolkit ◽

The Way

AbstractBacterial magnetosomes represent magnetic core-shell nanoparticles biomineralized by magnetotactic bacteria like Magnetospirillum gryphiswaldense. The establishment of fermentation regimes for high-yield particle production, standardized isolation procedures as well as the development of a genetic toolkit for the generation of “tailored” particles might soon pave the way for the application of engineered magnetosomes in the biomedical and biotechnological field.

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