Enhanced removal of hydroquinone by graphene aerogel-Zr-MOF with immobilized laccase

Li, Gaoping; Pang, Shilong; Wu, Yanwen; Ouyang, Jie

doi:10.1080/00986445.2017.1412313

Cited by 38 publications

(11 citation statements)

References 28 publications

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“…The results have shown that laccase is stable during the repetitive dialysis process. The DMELC recyclability is comparable to the recyclability of immobilized laccase reported by Li et al (2018), which indicated that the conversion of the substrate hydroquinone remained at approximately 70% by graphene aerogel-Zr-MOF with immobilized laccase after five catalyst reuse cycles. However, the relative conversion dropped below 50% after 8 cycles and 39.5 ± 0.7% at the tenth run.…”

Section: Laccase Recyclability During Dmelc Is Competitive With Immobsupporting

confidence: 76%

Dialysis membrane enclosed laccase catalysis combines a controlled conversion rate and recyclability without enzyme immobilization

Zhang

Wang

et al. 2020

AMB Expr

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Laccase is a versatile multicopper oxidase that holds great promise for many biotechnological applications. For such applications, it is essential to explore good biocatalytic systems for high activity and recyclability. The feasibility of membrane enclosed enzymatic catalysis (MEEC) for enzyme recycling with laccase was evaluated. The dialysis membrane enclosed laccase catalysis (DMELC) was tested for the conversion of the non-phenolic model substrate 2,2′-Azino-bis(3-ethylbenzthiazoline-6-sulfonate) (ABTS). Trametes versicolor laccase was found to be completely retained by the dialysis membrane during the process. The ABTS total conversion after DMELC reached the same values as the batch reaction of the enzyme in solution. The efficiency of DMELC conversion of ABTS under different process conditions including shaking speed, temperature, ABTS concentration and pH was investigated. The repetitive dialysis minimally affected the activity and the protein content of the enclosed laccase. DMELC retained 70.3 ± 0.8% of its initial conversion after 5 cycles. The usefulness of MEEC extends to other enzymes with the benefit of superior activity of an enzyme in solution and the recyclability which is normally only obtained with immobilized enzymes.

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Section: Laccase Recyclability During Dmelc Is Competitive With Immobsupporting

confidence: 76%

Dialysis membrane enclosed laccase catalysis combines a controlled conversion rate and recyclability without enzyme immobilization

Zhang

Wang

et al. 2020

AMB Expr

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“…[11][12][13] Among various wastewater treatment technologies adsorption is considered the best and most universal technique for the removal of a wide variety of organic and inorganic pollutants. 14 Because of its excellent chemical and thermal stability, 15,16 HKUST-1 is a typical material among MOFs and has been intensively investigated for the removal of various pollutants, such as H 2 S, 17 Pb(II), 18 dyes, 19,20 Sr 2+ , 21 Ni(II), 22 As(V), 23 Cr(VI), 24 hydroquinone, 25 uoroquinolone, 26 pesticides 27,28 and uranium. 29,30 In general, trimesic acid (H 3 BTC) has been used as the traditional ligand to prepare HKUST-1 in the previous reports.…”

Section: Introductionmentioning

confidence: 99%

Facile preparation of low-cost HKUST-1 with lattice vacancies and high-efficiency adsorption for uranium

Yang

Zhong

2019

RSC Adv.

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“…Another industrial wastewater treatment application is the removal of hydroquinone, which is highly toxic and hazardous to health. Li et al 40 synthesized Zr-MOF/reduced graphene oxide aerogel composites in the form of disks that were utilized as SPE disks for the removal of hydroquinone and immobilization of laccase, which is an enzyme that oxidizes hydroquinone. The promising results obtained in this study indicate the potential of materials that can be prepared by incorporating additives such as enzymes, drugs, and catalysts into MOFACs.…”

Section: Acs Applied Nano Materialsmentioning

confidence: 99%

“…After freeze-drying, MOFACs were obtained that included Ni-MOF, ZIF-8, MOF-5, Sn-MOF, Co-MOF, and bimetallic Fe-MOF/Ni-MOF. Li et al also synthesized a Zr-MOF(MMU)/graphene aerogel composite in the form of a disk for use in solid-phase extraction (SPE). SEM images showed that the honeycomb-like structure of the pure graphene aerogel was conserved but the smooth GA walls became rougher when MMU was wrapped around the GA.…”

Section: Techniques For Synthesis Of Mofacsmentioning

confidence: 99%

An Emerging Family of Hybrid Nanomaterials: Metal–Organic Framework/Aerogel Composites

İnönü

Keskın

Erkey

2018

ACS Appl. Nano Mater.

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Metal–organic frameworks (MOFs) are crystalline nanoporous coordination polymers made of metal ions and organic linkers. Aerogels are highly nanoporous amorphous polymers that can be organic, inorganic, or hybrid. Both of these unique materials have been extensively investigated in many laboratories around the world for a wide range of applications ranging from separations to catalysis, resulting in thousands of published articles in a wide variety of journals. MOF/aerogel composites (MOFACs) are a new class of nanostructured materials that are attracting increasing attention because of their favorable properties. The combination of the micro- and mesoporosities of MOFs with the meso- and macroporosities of aerogels makes MOFACs hierarchically multimodal porous materials. With their high surface areas and combined morphological, mechanical, physicochemical, and functional properties of both MOFs and aerogels, MOFACs have demonstrated outstanding performances in various applications. Herein we provide an overview of the techniques used to synthesize MOFACs in various shapes such as monoliths or particles based on incorporation of MOFs into the porous networks of aerogels along with literature examples. The synthesis of aerogel-supported metals and metal oxides using MOFACs as precursors is also described. Several applications of these composites are reviewed, including adsorption, separation, catalysis, energy conversion, and storage devices such as batteries and supercapacitors. Future prospects in synthesis techniques and applications are provided to address opportunities and challenges in the field of MOFACs.

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Enhanced removal of hydroquinone by graphene aerogel-Zr-MOF with immobilized laccase

Cited by 38 publications

References 28 publications

Dialysis membrane enclosed laccase catalysis combines a controlled conversion rate and recyclability without enzyme immobilization

Dialysis membrane enclosed laccase catalysis combines a controlled conversion rate and recyclability without enzyme immobilization

Facile preparation of low-cost HKUST-1 with lattice vacancies and high-efficiency adsorption for uranium

An Emerging Family of Hybrid Nanomaterials: Metal–Organic Framework/Aerogel Composites

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