Noble Metal-Enhanced Au@Cuo Core-Shell Heterostructure with Multienzyme-Mimicking Activities for Colorimetric Detection of Tannic Acid DOI
Xin Kang,

Jun Zhu,

Jipeng Wang

et al.

Published: Jan. 1, 2024

Language: Английский

Hydrophilic Shape‐Memory Nanozyme Aerogel for the Development of a Reusable and Signal‐Amplified Sensor DOI Open Access

Weijuan Jia,

Bin Zhu, Aoxue Zhang

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 24, 2025

Abstract Nanozymes hold great promise for biosensing applications, yet their practical implementation is hampered by limitations in signal enhancement, reusability, and device integration. Herein, the development of a hydrophilic shape‐memory nanozyme aerogel that addresses these challenges reported. The platform constructed embedding chitosan‐protected platinum nanoparticles (Pt‐CS NPs), which exhibit intrinsic peroxidase (POD) activity, within polyacrylic acid (PAA) matrix. This hybrid Pt‐CS/PAA retains effect PAA component as well POD activity Pt‐CS NPs. Importantly, exhibits differential adsorption behaviors toward two distinct oxidation products, oxidized 3,3′,5,5′‐tetramethyl‐benzidine (oxTMB) 2,2′‐azino‐bis(3‐ethylbenzothiazoline‐6‐sulfonic acid) (oxABTS), driven differing electrostatic potentials with aerogel. By integrating effect, catalysis, exceptional probe performance, enables realization signal‐amplified or reusable nanozyme‐based assay, when employing TMB ABTS chromogenic substrates, respectively. Furthermore, architecture allows straightforward deviceization, transforming analysis from conventional test paper formats into practical, sensing devices. work establishes generalizable blueprint engineering smart materials shape memory characteristics, opening up new avenues developing advanced platforms enhanced performance user‐friendly operability.

Language: Английский

Citations

1
FeMo6 integrated covalent organic frameworks: Peroxidase-mimetic colorimetric biosensors for multivariate sensing hydrogen peroxide and ascorbic acid in serum and beverages DOI
Xinyu Han,

Ji-hong Zhou,

Yunjie Li

et al.

Food Chemistry, Journal Year: 2025, Volume and Issue: 479, P. 143727 - 143727

Published: March 6, 2025

Language: Английский

Citations

1
Enzyme-free colorimetric assay for the detection of uric acid in urine by cobalt tetroxide DOI

Jiangfei Cao,

Chunsheng Xie, Yi Zeng

et al.

Microchemical Journal, Journal Year: 2024, Volume and Issue: 204, P. 111079 - 111079

Published: June 26, 2024

Language: Английский

Citations

7
Manganese Silicate with Proximity Effect and Enhanced Polarity toward Substrates for Efficient Enzymatic Biosensing DOI

Jianyu Huang,

Xiaowei Li, Xiuling Li

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: April 24, 2025

Functional nanoparticle-mediated enzymatic sensors have been extensively utilized in the colorimetric detection of biomolecules. However, low affinity toward substrates and unstable color development oxidized severely influence period reliability results. Herein, a rapid reliable method has proposed by employing manganese silicate NPs (MSs) as paradigm for uric acid (UA). MSs demonstrate favorable catalytic kinetics (Km = 0.046 mM). Compared with reported methods, shortened ultralong curve platform (∼8 min) ensure higher rapidity reliability. Theoretical calculations based on density functional theory were further to reveal mechanism oxidase mimic. The inherent ability spontaneously generate ROS along its proximity effect resulting from substrate adsorption provides robust theoretical support ultrafast kinetics. Moreover, ions reduced degree electron delocalization TMB increasing molecular polarity decreased solvation free energy improve dissolution stability. As expected, MSs-based exhibits excellent accuracy stability monitoring UA change human urine specimens, which is superior commercial kit. Furthermore, integration methodologies portable smart systems bridges fundamental scientific exploration practical implementation, enabling both cost expanded applicability nanozyme-based sensors.

Language: Английский

Citations

0
Ultrafast Charged MnO2 Nanosheets/Carbon Fiber with Mechanical and Postcharging Antibacterial Activity DOI
Yang Zou,

Qinrong He,

Yudong Song

et al.

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: March 15, 2025

Postcharging antibacterials have shown good application prospects in combating bacterial infections through electrical interaction. Herein, manganese oxide nanosheets situ grown on carbon fibers (CM) are designed to perform the integration of mechanical intervention and postcharging therapy for efficient killing. This electrode disrupts membranes via sharp-edged microstructures. After charging at a low voltage an ultrashort time, charged CM affects extracellular electron transfer (EET) bacteria during discharge process kill bacteria. Due dual-antibacterial mode, after −1 V (vs saturated calomel electrode, SCE) only 50.4 ± 3 s, lethality rates against Escherichia coli Staphylococcus aureus within 0.5 h both exceed 98%. Our developed ultrafast negatively exhibits high antibacterial activity cytotoxicity fibroblast cells, providing non-antibiotic approach combat infection.

Language: Английский

Citations

0
Real-time and Visual Monitoring Coating Damage and Metal Corrosion based on the Multiple Chromatic Transition of TMB Triggered by Highly Active N-CDs/Fe3O4 Peroxidase Mimics and Fe3+ DOI

Tianfei Qi,

Ruonan Jia, Linbo Zhang

et al.

Sensors and Actuators B Chemical, Journal Year: 2024, Volume and Issue: 415, P. 136003 - 136003

Published: May 21, 2024

Language: Английский

Citations

2
Noble metal-enhanced Au@CuO heterostructure with multienzyme-mimicking activities for colorimetric detection of tannic acid DOI
Xin Kang, Yiping Ren, Jin Wang

et al.

The Analyst, Journal Year: 2024, Volume and Issue: 149(19), P. 4889 - 4898

Published: Jan. 1, 2024

Nanozymes, serving as synthetic alternatives to natural enzymes, offer several benefits including cost-effectiveness, enzyme-like catalytic abilities, enhanced stability, adjustable activity, easy recyclability, mild reaction conditions, and environmental friendliness. Nonetheless, the ongoing quest develop nanozymes with activity delve into mechanism remains a challenge. In our research, we effectively developed Au@CuO nanocomposites (Au@CuO Nc), replicating functions of four enzymes found in nature: peroxidase (POD), catalase (CAT), glutathione (GPx), oxidase (OXD). The efficiency Nc for TMB oxidation (oxTMB) was approximately 4.8 times greater than that plain Cu

Language: Английский

Citations

2
Enhanced luminol chemiluminescence with oxidase-like properties of prussian blue/MXene nanocomposite without H2O2 for the sensitive detection of uric acid DOI

Zhiying Shi,

Ting Wu,

Wentai Feng

et al.

Microchemical Journal, Journal Year: 2024, Volume and Issue: 206, P. 111455 - 111455

Published: Aug. 30, 2024

Language: Английский

Citations

2
Integrating recognition peptide into a nanozyme to mimic uricase binding pocket as a multifunctional nanoplatform for highly selective uric acid recognition, sensing and degrading DOI
Yan Liu, Ning Li, Hongyan Zhang

et al.

Sensors and Actuators B Chemical, Journal Year: 2024, Volume and Issue: unknown, P. 136784 - 136784

Published: Oct. 1, 2024

Language: Английский

Citations

2
Efficient Colorimetric Detection of Natural Polyphenolic Compounds by Amino Acid-based Nanozyme DOI
Siya Wang, Jun Tang, Mingxuan Liu

et al.

Food Bioscience, Journal Year: 2024, Volume and Issue: unknown, P. 105572 - 105572

Published: Nov. 1, 2024

Language: Английский

Citations

1