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Zhang ZJ, Zhang M, Cai YJ, Fan WG, Zeng H. Investigation to the impact of mutual interactions between CdS sensitized TiO2 and integrated Hemoglobin on the catalysis of H2O2 Electro-reduction. Chem Phys 2022. [DOI: 10.1016/j.chemphys.2022.111664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Habimana P, Gao J, Mwizerwa JP, Ndayambaje JB, Liu H, Luan P, Ma L, Jiang Y. Improvement of Laccase Activity Via Covalent Immobilization over Mesoporous Silica Coated Magnetic Multiwalled Carbon Nanotubes for the Discoloration of Synthetic Dyes. ACS OMEGA 2021; 6:2777-2789. [PMID: 33553896 PMCID: PMC7860064 DOI: 10.1021/acsomega.0c05081] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Accepted: 01/13/2021] [Indexed: 05/19/2023]
Abstract
Due to its environmental friendliness and biodegradable ability, the enzymatic decolorization of azo dyes is the best option. However, the free enzyme suffers from various limitations, including poor stability, no repeatable use, and a high expense, which is the key drawback for its practical use. In this analysis, the laccase enzyme was immobilized in mesoporous silica coated magnetic multiwalled carbon nanotubes (Fe3O4-MWCNTs@SiO2) by a glutaraldehyde cross-linker to create an easily separable and stable enzyme. Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDX) were used to characterize the as-synthesized Fe3O4-MWCNTs@SiO2. Laccase immobilized in Fe3O4-MWCNTs@SiO2 showed a good improvement in temperature, pH, and storage stability. Moreover, the operational stability of the biocatalyst was improved, retaining 87% of its original activity even after 10 cycles of 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) oxidation. The biocatalysts were applied for the decolorization of selected azo dyes without a mediator, and up to 99% of Eriochrome Black T (EBT), 98% of Acid Red 88 (AR 88), and 66% of Reactive Black 5 (RB5) were decolorized. Based on these properties, the biocatalysts can be potentially utilized in various environmental and industrial applications.
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Affiliation(s)
- Pascal Habimana
- School
of Chemical Engineering and Technology, Hebei University of Technology, 8 Guangrong Road, Hongqiao District, Tianjin 300130, China
| | - Jing Gao
- School
of Chemical Engineering and Technology, Hebei University of Technology, 8 Guangrong Road, Hongqiao District, Tianjin 300130, China
| | - Jean Pierre Mwizerwa
- College
of Mechatronics and Control Engineering, Shenzhen University, Houhai Ave, Nanshan District, Shenzen, Guangdong Province, 518060, China
| | | | - Hengrao Liu
- School
of Chemical Engineering and Technology, Hebei University of Technology, 8 Guangrong Road, Hongqiao District, Tianjin 300130, China
| | - Pengqian Luan
- School
of Chemical Engineering and Technology, Hebei University of Technology, 8 Guangrong Road, Hongqiao District, Tianjin 300130, China
| | - Li Ma
- School
of Chemical Engineering and Technology, Hebei University of Technology, 8 Guangrong Road, Hongqiao District, Tianjin 300130, China
- E-mail:
| | - Yanjun Jiang
- School
of Chemical Engineering and Technology, Hebei University of Technology, 8 Guangrong Road, Hongqiao District, Tianjin 300130, China
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Direct Electro-Chemistry and Electro-Catalytic Reduction on Hydrogen Peroxide of Horseradish Peroxidase Based Electrode on the Basis of Graphene Oxide-Magnetic Nano-Particle Composite. J Inorg Organomet Polym Mater 2021. [DOI: 10.1007/s10904-020-01714-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Direct Electrochemistry and Photoelectro-Catalysis on Oxygen Reduction Reaction of Titanium Dioxide Nano-Tubes Sensitized by Meso-Tetrakis (4-carboxyphenyl) Porphine with Laccase Accommodation. Macromol Res 2021. [DOI: 10.1007/s13233-021-9008-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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