Activity Regulation of Fenton/Fenton‐like Reactions in Single‐Atom Catalysis

Liang, Xuan; Wang, Dingsheng

doi:10.1002/cctc.202201579

Cited by 9 publications

(3 citation statements)

References 146 publications

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“…[97] destroy its coordination environments, thus the activity of Fe SACs-based electrocatalysts will gradually decrease or even deactivate. [100] Therefore, in the catalytic sensing system involving * OH radicals, it is a simple and practical strategy to regulate the central metal elements with high chemical activity and strong tolerance. CoÀ N x , which is similar in structure to the natural metalloenzymes, is much more stable in this respect and can be used as one of the best choices in some environments which involve * OH.…”

Section: Metal Centers Regulationmentioning

confidence: 99%

“…As expected, Fe SACs owns excellent sensitivity and exceptional selectivity for electrochemical H 2 O 2 sensing, and the detection limit can reach nM level (Figure 8a). [89] Some studies have shown that the reactive oxygen species (ROS) can attack the Fe atom sites or destroy its coordination environments, thus the activity of Fe SACs‐based electrocatalysts will gradually decrease or even deactivate [100] . Therefore, in the catalytic sensing system involving ⋅OH radicals, it is a simple and practical strategy to regulate the central metal elements with high chemical activity and strong tolerance.…”

Section: Improving Catalytic Sensing Performance Via Structural Regul...mentioning

confidence: 99%

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Structure Regulation of Single‐atom Catalysts for Electrocatalytic Sensing

Shu,

Mo,

Gao

2024

ChemCatChem

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Single‐atom catalysts (SACs) have received extensive attention in the fields of electrocatalytic sensing, and in response to the requirements of different sensing systems, a variety of metal single‐atom structures have been emerged. In this review, we at first introduce the current mainstream synthesis methods of SACs, and then focus on the structural regulation strategies of SACs and the structure‐performance relationship generated in electrocatalytic sensing. It is worth noting that we classify the regulation engineering of single‐atom structures and describe the corresponding enhanced performance of electrocatalytic sensing, which makes up for the shortcomings of reviews in this field. Eventually, the opportunities and challenges of SACs based electrochemical sensors are outlined.

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Section: Metal Centers Regulationmentioning

confidence: 99%

Section: Improving Catalytic Sensing Performance Via Structural Regul...mentioning

confidence: 99%

Structure Regulation of Single‐atom Catalysts for Electrocatalytic Sensing

Shu,

Mo,

Gao

2024

ChemCatChem

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“…have also demonstrated the ability to H 2 O 2 to •OH through Fenton-type reactions. [92] Recently, Co-SAs@NC with Co-N 4 as the center showed excellent Fenton-like activity, producing enough O 2…”

Section: Endogenous Stimulus Responsivementioning

confidence: 99%

Atomic Engineering of Single‐Atom Nanozymes for Biomedical Applications

Shen,

Chen,

Qian

et al. 2024

Advanced Materials

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Single‐atom nanozymes (SAzymes) showcase not only uniformly dispersed active sites but also meticulously engineered coordination structures. These intricate architectures bestow upon them an exceptional catalytic prowess, thereby captivating numerous minds and heralding a new era of possibilities in the biomedical landscape. Tuning the microstructure of SAzymes on the atomic scale is a key factor in designing targeted SAzymes with desirable functions. In this review, we firstly discuss and summarize three strategies for designing SAzymes and their impact on reactivity in biocatalysis. The effects of choices of carrier, different synthesis method, coordination modulation of first/second shell, and the type and number of metal active centers on the enzyme‐like catalytic activity are unraveled. Next, we make a first attempt to summarize the biological applications of SAzymes in tumor therapy, biosensing, antimicrobial, anti‐inflammatory and other biological applications from different mechanisms. Finally, how SAzymes are designed and regulated for further realization of diverse biological applications is reviewed and prospected. We envisage that the comprehensive review presented within this exegesis will furnish novel perspectives and profound revelations regarding the biomedical applications of SAzymes.This article is protected by copyright. All rights reserved

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Electron Delocalization Realizes Speedy Fenton‐Like Catalysis over a High‐Loading and Low‐Valence Zinc Single‐Atom Catalyst

Xin,

Ni,

Zhang

et al. 2023

Advanced Science

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A zinc (Zn)‐based single‐atom catalyst (SAC) is recently reported as an active Fenton‐like catalyst; however, the low Zn loading greatly restricts its catalytic activity. Herein, a molecule‐confined pyrolysis method is demonstrated to evidently increase the Zn loading to 11.54 wt.% for a Zn SAC (ZnSA‐N‐C) containing a mixture of Zn−N4 and Zn−N3 coordination structures. The latter unsaturated Zn−N3 sites promote electron delocalization to lower the average valence state of Zn in the mix‐coordinated Zn−Nx moiety conducive to interaction of ZnSA‐N‐C with peroxydisulfate (PDS). A speedy Fenton‐like catalysis is thus realized by the high‐loading and low‐valence ZnSA‐N‐C for PDS activation with a specific activity up to 0.11 min L−1 m−2, outstripping most Fenton‐like SACs. Experimental results reveal that the formation of ZnSA‐N‐C−PDS* complex owing to the strong affinity of ZnSA‐N‐C to PDS empowers intense direct electron transfer from the electron‐rich pollutant toward this complex, dominating the rapid bisphenol A (BPA) elimination. The electron transfer pathway benefits the desirable environmental robustness of the ZnSA‐N‐C/PDS system for actual water decontamination. This work represents a new class of efficient and durable Fenton‐like SACs for potential practical environmental applications.

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Activity Regulation of Fenton/Fenton‐like Reactions in Single‐Atom Catalysis

Cited by 9 publications

References 146 publications

Structure Regulation of Single‐atom Catalysts for Electrocatalytic Sensing

Structure Regulation of Single‐atom Catalysts for Electrocatalytic Sensing

Atomic Engineering of Single‐Atom Nanozymes for Biomedical Applications

Electron Delocalization Realizes Speedy Fenton‐Like Catalysis over a High‐Loading and Low‐Valence Zinc Single‐Atom Catalyst

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