Laccase-immobilized bacterial cellulose/TiO2 functionalized composite membranes: Evaluation for photo- and bio-catalytic dye degradation

Li, Guohui; Nandgaonkar, Avinav G.; Wang, Qingqing; Zhang, Jinning; Krause, Wendy E.; Wei, Qufu; Lucia, Lucian A.

doi:10.1016/j.memsci.2016.10.033

Cited by 124 publications

(30 citation statements)

References 42 publications

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“…Reuse of PA/PEI-laccase samples was excellent, reaching up to 100% of initial activity after five rounds of ABTS oxidation (Figure 3). This indicates a very high level of stability compared to the literature in references [26,27].…”

Section: Storage Stability and Reusability Of Immobilized Laccasementioning

confidence: 62%

Wastewater Treatment by Novel Polyamide/Polyethylenimine Nanofibers with Immobilized Laccase

Maryšková

Schaabová

Tománková

et al. 2020

Water

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Endocrine-disrupting chemicals are highly resistant organic compounds, commonly occurring in the aquatic environment, that can interfere with the endocrine system of animals and humans, causing serious chronic diseases. In recent decades, enzymes from oxidoreductases have been studied for their potential to degrade these compounds effectively. In order to use such enzymes repeatedly, it is necessary to ensure their insolubility in water, a method termed enzyme immobilization. We developed novel polyamide/polyethylenimine (PA/PEI) nanofibers as a promising support material for the immobilization of various biomolecules. Our nanofibers are highly suitable due to a unique combination of mechanical endurance provided by polyamide 6 and their affinity toward biomolecules, ensured by numerous PEI amino groups. Enzyme laccase was successfully immobilized onto PA/PEI nanofibers using a simple and fast method, providing exceptional activity and stability of the attached enzyme. We then tested the degradation ability of the PA/PEI-laccase samples on a highly concentrated mixture of endocrine-disrupting chemicals in real wastewater with adjusted pH. The results indicate that the samples were a suitable material for wastewater treatment by degrading a highly concentrated mixture of bisphenol A, 17α-ethinylestradiol, triclosan, and diclofenac, in real wastewater effluent.

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Section: Storage Stability and Reusability Of Immobilized Laccasementioning

confidence: 62%

Wastewater Treatment by Novel Polyamide/Polyethylenimine Nanofibers with Immobilized Laccase

Maryšková

Schaabová

Tománková

et al. 2020

Water

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“…For example, inorganic and organic hybrid materials, especially nanostructured inorganic materials in polymeric matrices have attracted a great deal of attention due to the promise of combining the thermal and mechanical properties of inorganic compounds and polymers, respectively [1]. Consequently, polymer matrices with nanostructured inorganic composites show good potential in various electronics, photonics, catalysis, biomedical and environmental applications [2][3][4][5][6][7]. Cellulose, one of the most exploited renewable raw materials, is Earth's most abundant biopolymer and a major component of wood, cotton, and other plant-based materials.…”

Section: Introductionmentioning

confidence: 99%

“…By compositing BC with sodium alginate and silver sulfadiazine exhibited excellent antibacterial activities and good biocompatibility [3]. Nanocomposite of BC-titanium oxide (TiO 2 ) was found efficient, stable and reusable for the removal of lead in environmental water [4] and constructed as composite membranes for combining photocatalytic and bioatalytic degradation of textile dye [5,6]. Compositing BC with zinc-oxide nanoparticles were used as a new strategy for enhanced biomedical applications [7].…”

Section: Introductionmentioning

confidence: 99%

Characterization of a bacterial cellulose-silica nanocomposite prepared from agricultural waste products

Soemphol

Charee

Audtarat

et al. 2020

Mater. Res. Express

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Bacterial cellulose (BC) has attracted considerable scientific interest and can be modified, making it more widely useful in composites with guest nanoparticles. In this study, silica nanoparticles obtained from rice husks were used to prepare BC-silica composite aerogels (CAs) via a sol-gel method. Various amount of silica nanoparticles (3, 6, 9 and 12% w/v) dissolved in 2.5 M NaOH were used as a precursor for inclusion into BC. Subsequently, it was employed to form a SiO 2 gel skeleton in a BC matrix by adding 2 M H 2 SO 4, as a catalyst. Increasing levels of silica nanoparticles led progressively lower transmittance values of BC-silica CAs. SEM images revealed a surface morphology of spheroid particles with little agglomeration. The XRD diffraction peaks were gradually covered by a broad peak of silica as increasing silica content. Similarly, FTIR spectroscopy results also indicate the presence of silica in proportion to its content. Furthermore, addition of silica nanoparticles improved the thermal properties using TGA analysis, shifting the decomposition temperature of BC up to 550°C and retaining of BC weight at least 60% with the BC sample with 3% of silica. This unique characteristic implies that silica had a stabilizing effect on polymeric cellulose. These results demonstrate an economical and environmentally friendly preparation of BC-silica CAs that can benefit material applications.

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“…Polymers such as cellulose (Ce) can easily be incorporated with nanometal oxides. The chitosan/ TiO 2 compound nano-fibrous adsorbents is fabricated by two methods, namely TiO 2 coated chitosan nanofibers and entrapped method (Razzaz et al, 2016;Li et al, 2017) through site-directed surface oxidation chemistry, the hydroxyl groups of BC were successfully oxidized into aldehyde groups that served as anchors for covalent immobilization of laccase (Lac. Electrospun cellulose acetate/ TiO 2 adsorbents were set by the electrospinning method.…”

Section: Introductionmentioning

confidence: 99%

Electronic Properties of Cellulose Through Molecular Modeling Technique for Wastewater Treatment

Mekky¹

2020

SJKFU

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Improvement of cellulose electronic properties is one of the promising strategies used in wastewater treatment. The aim of this work is to study the properties of cellulose (Ce) enhanced by combining with chitosan (Cs) and TiO 2 nano-particles, as molecular modeling using certain naturally revised blends can help in eliminating heavy elements from the waste-water environment. TiO 2 , as water management mediators, was admitted in the chitosan/ cellulose blend. The nano-component cellulose/ TiO 2 and cellulose/chitosan/TiO 2 (Ce/TiO 2 and Ce/Cs/TiO 2) was utilized to detect the optimized geometrical structures and some electronic properties of the samples. The consequences of polymer nano-composites (PNCs) showed an expansion of the contact between the contiguous atoms when adjusting the optimized geometry, higher dipole moment, and lower ionization potential and slight HOMO-LUMO energy gaps compared to their original constituents of pure Ce. Thus, the ability of the nanocomposites mix improved its ability to remove heavy-metal pollutants from wastewater.

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Laccase-immobilized bacterial cellulose/TiO2 functionalized composite membranes: Evaluation for photo- and bio-catalytic dye degradation

Cited by 124 publications

References 42 publications

Wastewater Treatment by Novel Polyamide/Polyethylenimine Nanofibers with Immobilized Laccase

Wastewater Treatment by Novel Polyamide/Polyethylenimine Nanofibers with Immobilized Laccase

Characterization of a bacterial cellulose-silica nanocomposite prepared from agricultural waste products

Electronic Properties of Cellulose Through Molecular Modeling Technique for Wastewater Treatment

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