Self-reduce gold nanoparticles on Ti3C2Tx MXene nanoribbons to highly sensitive colorimetric determination of mercury ion and cysteine based on the mercury-motivated peroxidase mimetic activity

Zhou, Xun; Zhang, Juerui; Liao, Diyan; Wu, Kechen; Liu, Hongde; Zhu, Gangbing; Yi, Yinhui

doi:10.1016/j.snb.2022.133271

Cited by 13 publications

(7 citation statements)

References 50 publications

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“…If l -AA or l -Trp was added, the absorbance peak at 652 nm almost kept undisturbed (Figure b). Then, isopropanol (IPA, 0.5 mM) and tert -butyl alcohol (TBA, 0.5 mM) were used to quench ·OH . As IPA and TBA were added, the situation reversed and the peak weakened distinctively (Figure c).…”

Section: Resultsmentioning

confidence: 99%

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Construction of Mo-Based p–n Heterojunction with Enhanced Oxidase–Mimic Activity for AOPs and Antibiofouling

Xu,

Zhang,

et al. 2023

Inorg. Chem.

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Section: Resultsmentioning

confidence: 99%

“…Then, isopropanol (IPA, 0.5 mM) and tert-butyl alcohol (TBA, 0.5 mM) were used to quench •OH. 49 As IPA and TBA were added, the situation reversed and the peak weakened distinctively (Figure 4c). This implies •OH plays a decisive role for oxidase-mimic activity.…”

Section: ■ Introductionmentioning

confidence: 98%

Construction of Mo-Based p–n Heterojunction with Enhanced Oxidase–Mimic Activity for AOPs and Antibiofouling

Xu,

Zhang,

et al. 2023

Inorg. Chem.

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“…Zhou et al modified the Ti 3 C 2 Tx MXene nanoribbons (Ti 3 C 2 TxNR) with gold nanoparticles (AuNPs) via a simple self-reduction method to prepare a POD-like nanozyme: Ti 3 C 2 TxNR@AuNPs nanohybrids. [147] In the presence of Hg 2 + , the catalytic activity of Ti 3 C 2 TxNR@AuNPs towards H 2 O 2 was motivated owing to the formation of AuÀ Hg amalgam, darkening the resulting blue oxTMB. Coupled with a smartphone, Ti 3 C 2 TxNR@AuNPs was utilized for fabricating a sensitive colorimetric sensing platform of Hg 2 + with a wide linear range (0.005-2.0 μM) and a low detection limit (0.054 nM) (Figure 8a).…”

Section: Toxic Ionsmentioning

confidence: 99%

“…(a) Illustration of the POD-like Ti 3 C 2 TxNR@AuNPs based portable colorimetric sensing platform for the detection of Hg2+and Cys. Reproduced from ref [147]. with permission from Elsevier.…”

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confidence: 99%

Rational Integration of Nanozyme Probe and Smartphone Device for On‐Site Analysis

Wu,

Zhou,

Chen

et al. 2024

Analysis & Sensing

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On‐site detection featuring miniaturized, integrated analytical device and rapid data feedback has encouraged a great deal of attention, especially in the current context of pandemic diseases occurring with high frequency worldwide. This convenient detection device constitutes a stable recognition element and a portable signal treatment and readout module. In this regard, the enzyme‐mimic nanomaterials (nanozymes) with the merits of structural stability, cost efficiency, scale‐up synthesis and high recyclability well meet the requirements for recognition unit set‐up. While the all‐pervading smartphone, which enables the data collection through photography or wireless transmission, holds numerous opportunities in the design of hand‐held analytical device. In this review, we summarize the advances of nanozyme‐smartphone integrated platforms, with special emphasis of the signal transduction principles involving colorimetric, chemiluminescence, and electrochemical signals. The diversified on‐site applications in terms of biological, environment and food analysis are showcased. Finally, the current challenges as well as thefuture perspectives on nanozyme design, sensing diversity and smartphone analysis are discussed.

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“…Up to now, several interesting methods have been developed to monitor AChE and its inhibitor OPs, including the Ellman method, chemiluminescence, fluorescence, and the electrochemical method . However, these methods have certain drawbacks that limit their application in the field, such as the need for complex instrumentation, false positive effects, and instability . Therefore, it is necessary to design more cost-effective methods for the determination of AChE and OPs.…”

Section: Introductionmentioning

confidence: 99%

High Peroxidase-Mimicking Metal–Organic Frameworks Decorated with Platinum Nanozymes for the Colorimetric Detection of Acetylcholine Chloride and Organophosphorus Pesticides via Enzyme Cascade Reaction

Zhou

Liao

et al. 2023

Inorg. Chem.

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The sensitive detection of acetylcholinesterase (AChE) and organophosphorus pesticides (OPs) is very important for the protection of human health. Herein, a hybrid material, Pt NPs/Fe-MOF, consisting of a metal−organic framework (MIL-88B-NH 2 , Fe-MOF) decorated with platinum nanoparticles (Pt NPs), was prepared first and exhibited remarkably improved and excellent peroxidase-mimicking activity compared to the Fe-MOF material resulting from the synergistic catalysis effect between Fe-MOF and Pt NPs, which can effectively catalyze 3,3′,5,5′tetramethylbenzidine (TMB) oxidation to generate a blue product (oxidized TMB, oxTMB). Interestingly, in the presence of AChE and acetylcholinesterase, the peroxidase-mimicking activity from Pt NPs/Fe-MOF was inhibited obviously, and thus, a colorimetric sensing platform for AChE can be constructed; more importantly, after the addition of OPs, this nanozyme activity can be recovered, inducing the further successful construction of a sensitive colorimetric sensing platform for OPs. The related sensing mechanism and condition optimization were studied, and the as-prepared Pt NPs/Fe-MOF nanozyme-based colorimetric method for AChE and OP detection displayed superior analytical performances with wide linearities and low detection limits. Furthermore, the designed method offers satisfactory real application ability. We expect the as-proposed Pt NPs/Fe-MOF nanozyme-based colorimetric sensing platform for AChE and OPs via the enzyme cascade reaction to show great potential application.

show abstract

Self-reduce gold nanoparticles on Ti3C2Tx MXene nanoribbons to highly sensitive colorimetric determination of mercury ion and cysteine based on the mercury-motivated peroxidase mimetic activity

Cited by 13 publications

References 50 publications

Construction of Mo-Based p–n Heterojunction with Enhanced Oxidase–Mimic Activity for AOPs and Antibiofouling

Construction of Mo-Based p–n Heterojunction with Enhanced Oxidase–Mimic Activity for AOPs and Antibiofouling

Rational Integration of Nanozyme Probe and Smartphone Device for On‐Site Analysis

High Peroxidase-Mimicking Metal–Organic Frameworks Decorated with Platinum Nanozymes for the Colorimetric Detection of Acetylcholine Chloride and Organophosphorus Pesticides via Enzyme Cascade Reaction

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