A review on metal nanozyme-based sensing of heavy metal ions: Challenges and future perspectives

Unnikrishnan, Binesh; Lien, Chia-Wen; Chu, Han‐Wei; Huang, Chih‐Ching

doi:10.1016/j.jhazmat.2020.123397

Cited by 197 publications

(76 citation statements)

References 103 publications

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“…The catalytic activity of nanozymes could also be affected by metal ions (e.g., Fe 3+ , Hg 2+ , Ni 2+ , Cd 2+ , and Al 3+ ) and anions (e.g., S 2-, F -, Cl -, Br -, and I -) [136,263,264]. For example, heavy metal ions might inhibit catalytic activities of metal-and metal oxide-based nanozymes, which could be ascribed to the metallophilic interaction between nanozymes and heavy metal ions, including the deposition of metal ions [265], the formation of alloy on the surface of nanomaterials [266], and the leaching of surface atoms [267].…”

Section: External Triggersmentioning

confidence: 99%

“…The base-like decompositions of H 2 O 2 in low-pH conditions was fundamental to the POD-like activities of Au, Ag, Pt and Pd nanozymes while their CAT-type activity was related to the acid-like decompositions of H 2 O 2 in high-pH conditions. Hydronium The catalytic activity of nanozymes could also be affected by metal ions (e.g., Fe 3+ , Hg 2+ , Ni 2+ , Cd 2+ , and Al 3+ ) and anions (e.g., S 2– , F – , Cl – , Br – , and I – ) [ 136 , 263 , 264 ]. For example, heavy metal ions might inhibit catalytic activities of metal- and metal oxide-based nanozymes, which could be ascribed to the metallophilic interaction between nanozymes and heavy metal ions, including the deposition of metal ions [ 265 ], the formation of alloy on the surface of nanomaterials [ 266 ], and the leaching of surface atoms [ 267 ].…”

Section: Properties Of Metal- and Metal Oxide-based Nanozymesmentioning

confidence: 99%

“…Dozens of excellent reviews concerned with nanozymes have been published in recent years. Some of the reviews involved the research progress of nanozymes in a particular field [5,21,27,43,44]. Some researchers organized and revealed the natural activities and working mechanisms of specific nanozymes [45][46][47][48][49].…”

Section: Introductionmentioning

confidence: 99%

“…Generally, existing nanozymes are affiliated with two categories, namely oxidoreductase family and hydrolase family. Carbon-based materials, metal, and transition metal compounds are the most common nanozyme composition materials [ 21 ]. Wu et al reviewed the history of nanozyme and draw a brief timeline for the evolution of artificial enzymes and natural enzymes (Fig.…”

Section: Introductionmentioning

confidence: 99%

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A Review on Metal- and Metal Oxide-Based Nanozymes: Properties, Mechanisms, and Applications

et al. 2021

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Since the ferromagnetic (Fe3O4) nanoparticles were firstly reported to exert enzyme-like activity in 2007, extensive research progress in nanozymes has been made with deep investigation of diverse nanozymes and rapid development of related nanotechnologies. As promising alternatives for natural enzymes, nanozymes have broadened the way toward clinical medicine, food safety, environmental monitoring, and chemical production. The past decade has witnessed the rapid development of metal- and metal oxide-based nanozymes owing to their remarkable physicochemical properties in parallel with low cost, high stability, and easy storage. It is widely known that the deep study of catalytic activities and mechanism sheds significant influence on the applications of nanozymes. This review digs into the characteristics and intrinsic properties of metal- and metal oxide-based nanozymes, especially emphasizing their catalytic mechanism and recent applications in biological analysis, relieving inflammation, antibacterial, and cancer therapy. We also conclude the present challenges and provide insights into the future research of nanozymes constituted of metal and metal oxide nanomaterials.

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Section: External Triggersmentioning

confidence: 99%

Section: Properties Of Metal- and Metal Oxide-based Nanozymesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Review on Metal- and Metal Oxide-Based Nanozymes: Properties, Mechanisms, and Applications

et al. 2021

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“…And the treatment of high-concentration heavy metal ions with high toxicity were studied as the focus. [1][2][3][4] Copper is the third most abundant transition metal ion in human body after iron ion and zinc ion, and is also an essential trace element for human body. Excessive copper will have toxic effects on the central nervous system, cardiovascular system and hematopoietic function, which will harm human health and even lead to death.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and structure of a new fluorescent sensor based on Ba(II)‐multicarboxylate for detection of Cu²⁺ ion

Yin

Kan

2021

Zeitschrift anorg allge chemie

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A novel barium(II) coordination polymer (CP), [Ba 3 (L) 2 (H 2 O) 4 ] n 1, has been firstly isolated based on organic ligand 1- [(2'carboxybiphenyl-4-yl)methyl]-2-propylimidazole-4,5-dicarboxylic acid (H 3 L=(HO 2 C) 2 (C 3 N 2 )(C 3 H 7 )CH 2 (C 6 H 4 )(C 6 H 3 )CO 2 H) by hydrothermal technique, and determined by single-crystal X-ray diffractions, elemental analysis, IR, powder X-ray diffractions (PXRD). The Ba(II)-CP 1 belongs to a novel 2-D layer structure created from 1-D serrated chain containing secondary building unit (SBU) [Ba(1)Ba(2)Ba( 3)] via carboxylate group linkage. In 1, the ligand L 3À gives a variety of coordinated styles, nonadentate: μ 2 :(η 1 η 1 ), μ 2 :(η 1 η 1 ), μ 3 :(η 2 η 2 ) and decadentate: μ 1 :(η 1 η 1 ), μ 3 :(η 2 η 2 ), μ 3 :(η 1 η 2 ), μ 3 :(η 1 η 2 ), which is the first reported example.Moreover, the room-temperature fluorescent measurements show that the Ba(II)-CP 1 has specific ability to recognize copper(II) ion in aqueous solution by means of fluorescence quenching effect, corresponding obtained quenching constant K sv = 1.18 × 10 2 M À 1 and the limit of detection LOD = 0.274 μM. Fluorescence titration experiment reveals that there is a good linear relationship between copper ion concentration and fluorescence intensity in the concentration range of 2.0 × 10 À 65 .3 × 10 À 6 mol • L À 1 . The corresponding linear equation: y = 402.41897-0.70486x, and linear correlation coefficient: R 2 = 0.99866 (λ ex = 310 nm and λ em = 412 nm).

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Metrology of Platinum Nanozymes: Mechanistic Insights and Analytical Issues

Cursi,

Mirra,

Boselli

et al. 2024

Adv Funct Materials

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Thanks to their properties, stability, and multifunctionality, nanozymes are increasingly impacting several fields, including medicine, diagnostics, and environmental science. However, clear information about their catalytic properties and mechanisms is still lacking. Several critical issues are currently under discussions, such as the absence of univocally accepted catalytic mechanisms, standardized protocols for directly comparing nanozymes versus enzymes, and a comprehensive characterization of their performance in different chemical/biological environments. All these issues strongly limit the advancement of the field. Herein, nanozymes metrology and analysis of both catalytic mechanisms and methodological procedures are attempted, taking platinum nanozymes as a case study thanks to their multifunctional catalytic features. The oxidoreductase activities of Pt‐nanozymes (i.e., peroxidase‐, oxidase‐, and catalase‐like reactions) are critically investigated in different physical/chemical environments, clarifying fundamental aspects and providing general methodological guidelines for nanozyme properties characterization. Furthermore, PtNP activities are compared with natural enzymes in different conditions, and their performance and catalytic behavior are evaluated by calculating the turnover frequency (TOF) with different normalization strategies. The results highlight that Pt‐nanozymes are efficient catalysts, exhibiting outstanding catalase‐like activity. This work clarifies several key points concerning Pt‐nanozyme properties and general metrological issues, providing a workflow that can become a reference for several nanozymes characterizations.

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A review on metal nanozyme-based sensing of heavy metal ions: Challenges and future perspectives

Cited by 197 publications

References 103 publications

A Review on Metal- and Metal Oxide-Based Nanozymes: Properties, Mechanisms, and Applications

A Review on Metal- and Metal Oxide-Based Nanozymes: Properties, Mechanisms, and Applications

Synthesis and structure of a new fluorescent sensor based on Ba(II)‐multicarboxylate for detection of Cu²⁺ ion

Metrology of Platinum Nanozymes: Mechanistic Insights and Analytical Issues

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A review on metal nanozyme-based sensing of heavy metal ions: Challenges and future perspectives

Cited by 197 publications

References 103 publications

A Review on Metal- and Metal Oxide-Based Nanozymes: Properties, Mechanisms, and Applications

A Review on Metal- and Metal Oxide-Based Nanozymes: Properties, Mechanisms, and Applications

Synthesis and structure of a new fluorescent sensor based on Ba(II)‐multicarboxylate for detection of Cu2+ ion

Metrology of Platinum Nanozymes: Mechanistic Insights and Analytical Issues

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Synthesis and structure of a new fluorescent sensor based on Ba(II)‐multicarboxylate for detection of Cu²⁺ ion