Construction of bacterial laccase displayed on the microbial surface for ultrasensitive biosensing of phenolic pollutants with nanohybrids-enhanced performance

Zhao, Yanfang; Yang, Jing; Wu, Yuqing; Baojian, Huang; Xu, Lubin; Jian-ming, Yang; Liang, Bo; Han, Lei

doi:10.1016/j.jhazmat.2023.131265

Cited by 11 publications

(2 citation statements)

References 52 publications

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“…Additionally, Zhao et al 133 proposed an economical electrochemical (bio)sensor that overcomes the application challenges of BLac and MXenes/PEI-MWCNT nanohybrids on a GCE for the detection of common NPL residues like CC and HQ. Their approach involved co-immobilizing cell surface displayed bacterial laccase (CSDBLac), as depicted in Fig.…”

Section: Enzyme Based Biosensorsmentioning

confidence: 99%

Nanomaterial-based electrochemical chemo(bio)sensors for the detection of nanoplastic residues: trends and future prospects

Jebril,

Fredj,

Saeed

et al. 2024

RSC Sustain.

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Section: Enzyme Based Biosensorsmentioning

confidence: 99%

Nanomaterial-based electrochemical chemo(bio)sensors for the detection of nanoplastic residues: trends and future prospects

Jebril,

Fredj,

Saeed

et al. 2024

RSC Sustain.

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“…Additionally, previous studies have found that phenolic compounds can produce extreme toxicity to aquatic organisms at low concentrations [ 3 ], and these compounds do not degrade quickly when entering underground aquifers. CC and HQ in water pose great potential harm to the human body and environment [ 4 , 5 ]. Therefore, it becomes particularly important to exploit a new analytical method with good performance in order to simultaneously discriminate and determine CC and HQ water samples.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Poly (Trans-3-(3-Pyridyl)Acrylic Acid)/Multi—Walled Carbon Nanotubes Membrane for Electrochemically Simultaneously Detecting Catechol and Hydroquinone

Luo

Fan²,

Sha

et al. 2023

Membranes

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Herein, conductive polymer membrane with excellent performance was successfully fabricated by integrating carboxylated multi-walled carbon nanotubes (MWCNTs) and poly (trans-3-(3-pyridyl) acrylic acid) (PPAA) film. The drop-casting method was employed to coated MWCNTs on the glassy carbon electrode (GCE) surface, and PPAA was then electropolymerized onto the surface of the MWCNTs/GCE in order to form PPAA-MWCNTs membrane. This enables the verification of the excellent performances of proposed membrane by electrochemically determining catechol (CC) and hydroquinone (HQ) as the model. Cyclic voltammetry experiments showed that the proposed membrane exhibited an obvious electrocatalytic effect on CC and HQ, owing to the synergistic effect of PPAA and MWCNTs. Differential pulse voltammetry was adopted for simultaneous detection purposes, and an increased electrochemical responded to CC and HQ. A concentration increase was found in the range of 1.0 × 10−6 mol/L~1.0 × 10−4 mol/L, and it exhibited a good linear relationship with satisfactory detection limits of 3.17 × 10−7 mol/L for CC and 2.03 × 10−7 mol/L for HQ (S/N = 3). Additionally, this constructed membrane showed good reproducibility and stability. The final electrode was successfully applied to analyze CC and HQ in actual water samples, and it obtained robust recovery for CC with 95.2% and 98.5%, and for HQ with 97.0% and 97.3%. Overall, the constructed membrane can potentially be a good candidate for constructing electrochemical sensors in environmental analysis.

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High‐Valence Mn MOF Inspired by Laccase Mediators Enables Versatile Nature‐Mimicking Catalysis

Xu,

Nan,

Han

et al. 2024

Small

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In nature, active Mn3+ –ligand complexes produced by laccase catalyzed oxidation can act as the low‐molecular mass, diffusible redox mediators to oxidize the phenolic substrates overcoming the limitations of natural enzymes. Learning from the metal–ligand coordination of natural functional units, high‐valence Mn metal–organic framework (Mn MOF) is constructed to simulate the catalysis in natural mediator system. Benefiting from the characteristics of nanoscale size, rich metal coordination unsaturated sites, and mixed valence state dominated by Mn(III), Nano Mn(III)‐TP exhibits superior laccase‐mimicking activity, whose Vmax (maximal reaction rate) is much higher than that of natural laccase. Referring to natural systems, relevant free radical experiments prove that the material induces the production of active oxygen species with the assistance of carboxylic acid, and active oxygen species further oxidize phenolic substrates. Based on its robust performances, the primary oxidative degradation of an emerging pollutant triclosan (TCS) is creatively applied, an important antiasthmatic medicine terbutaline sulfate (TBT) detection, and the synthesis of non‐toxic and black near‐natural dyes for dyeing. By simulating the essential mediators of natural enzymatic catalysis, an Mn MOF‐based material that demonstrates multiple novel applications is successfully developed, which introduces a new reliable strategy for achieving versatile nature‐mimicking catalysis.

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Construction of bacterial laccase displayed on the microbial surface for ultrasensitive biosensing of phenolic pollutants with nanohybrids-enhanced performance

Cited by 11 publications

References 52 publications

Nanomaterial-based electrochemical chemo(bio)sensors for the detection of nanoplastic residues: trends and future prospects

Nanomaterial-based electrochemical chemo(bio)sensors for the detection of nanoplastic residues: trends and future prospects

Fabrication of Poly (Trans-3-(3-Pyridyl)Acrylic Acid)/Multi—Walled Carbon Nanotubes Membrane for Electrochemically Simultaneously Detecting Catechol and Hydroquinone

High‐Valence Mn MOF Inspired by Laccase Mediators Enables Versatile Nature‐Mimicking Catalysis

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