Old dogs, new trick: Classical starch˗sodium iodide reagent as the chromogenic substrate of peroxidase-like nanozymes

Xia, Chunqiu; Zhang, Xiaomin; Liu, Xiaotao; Wu, Dehuai; Guo, Liangqia

doi:10.1016/j.snb.2022.132229

Cited by 8 publications

(2 citation statements)

References 29 publications

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“…In the presence of H 2 O 2 , POD-like nanozymes catalyzed the oxidation of TMB to blue oxTMB with a characteristic absorption peak at 652 nm, a typical peroxidase-mediated chromogenic reaction. 36 UV−vis spectra confirmed the inherent POD-like activity of VCN in an acidic buffer environment (Figure 3A). In addition, two other chromogenic substrates, o-phenylenediamine (OPD) and 2,2 '-azino-bis(3ethylbenzothiazole-6-sulfonic acid) (ABTS), further demonstrated the intrinsic POD-like activity of VCN (Figure 3B).…”

Section: ■ Experimental Sectionmentioning

confidence: 53%

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Graphitic Carbon Nitride/V₃O₇ Nanocomposites with Antibacterial Property via Photocatalytic and Nanozyme Activities

Chen,

Li,

et al. 2024

ACS Appl. Nano Mater.

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The increasing prevalence of bacterial issues and the misuse of antibiotics have emerged as significant contemporary problems that demand attention. Hence, there is an urgent need for the development of antibioticfree, efficient, and environmental antibacterial technologies as well as the establishment of an advanced platform for antibiotic detection and analysis. In this study, graphitic carbon nitride/V 3 O 7 nanocomposites (VCNs) with a unique heterojunction structure were synthesized by the chemical precipitation method. VCN not only exhibits remarkably high peroxidase (POD)-like activity but also possesses a favorable band structure. This endows VCN with a broader visible light absorption range and enables effective suppression of the recombination of photogenerated electron−hole pairs, thereby significantly enhancing its photocatalytic activity. With the synergistic effect of photocatalysis and nanozyme catalysis, the "white" plus "black" antibacterial effect of "1 + 1 > 2" has been successfully realized. Therefore, VCN exhibits highly efficient, environmental, and broad-spectrum antibacterial activity (>99.9%). In addition, based on the unique nature of VCN oxidation of 3,3′,5,5′tetramethylbenzidine (TMB), a colorimetric sensing array was successfully constructed that can extract multichannel information from a single reaction element. The feasibility of this array has been demonstrated in the analysis and detection of tetracycline antibiotics (TCs) within complex environments. This not only provides unique insights into the development of nanomaterials with photocatalytic and nanozyme activities but also offers innovative and sustainable solutions for antibacterial activity and effective monitoring of TCs.

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Section: ■ Experimental Sectionmentioning

confidence: 53%

Section: Resultsmentioning

confidence: 80%

Graphitic Carbon Nitride/V₃O₇ Nanocomposites with Antibacterial Property via Photocatalytic and Nanozyme Activities

Chen,

Li,

et al. 2024

ACS Appl. Nano Mater.

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Highly exposed Cu active sites as efficient peroxidase mimics for colorimetric analysis

Wei,

Chu,

Liu

et al. 2024

ChemPhysMater

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Daptomycin templated bimetallic PdPt3 nanoparticles with peroxidase-like and oxidase-like activities for sensitive colorimetric detection of glutathione in milk and fruit juice

Li,

Ma,

Cui

et al. 2024

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Old dogs, new trick: Classical starch˗sodium iodide reagent as the chromogenic substrate of peroxidase-like nanozymes

Cited by 8 publications

References 29 publications

Graphitic Carbon Nitride/V₃O₇ Nanocomposites with Antibacterial Property via Photocatalytic and Nanozyme Activities

Graphitic Carbon Nitride/V₃O₇ Nanocomposites with Antibacterial Property via Photocatalytic and Nanozyme Activities

Highly exposed Cu active sites as efficient peroxidase mimics for colorimetric analysis

Daptomycin templated bimetallic PdPt3 nanoparticles with peroxidase-like and oxidase-like activities for sensitive colorimetric detection of glutathione in milk and fruit juice

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Old dogs, new trick: Classical starch˗sodium iodide reagent as the chromogenic substrate of peroxidase-like nanozymes

Cited by 8 publications

References 29 publications

Graphitic Carbon Nitride/V3O7 Nanocomposites with Antibacterial Property via Photocatalytic and Nanozyme Activities

Graphitic Carbon Nitride/V3O7 Nanocomposites with Antibacterial Property via Photocatalytic and Nanozyme Activities

Highly exposed Cu active sites as efficient peroxidase mimics for colorimetric analysis

Daptomycin templated bimetallic PdPt3 nanoparticles with peroxidase-like and oxidase-like activities for sensitive colorimetric detection of glutathione in milk and fruit juice

Contact Info

Product

Resources

About

Graphitic Carbon Nitride/V₃O₇ Nanocomposites with Antibacterial Property via Photocatalytic and Nanozyme Activities

Graphitic Carbon Nitride/V₃O₇ Nanocomposites with Antibacterial Property via Photocatalytic and Nanozyme Activities