In-situ monitoring of hydrogen peroxide production at nickel single-atom electrocatalyst

Li, Zhi; Li, Yatai; Chen, Shanyong; Zha, Qing-Bing; Zhu, Mingshan

doi:10.1016/j.cej.2023.141657

Cited by 15 publications

(6 citation statements)

References 50 publications

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“…38,39 In recent years, porous materials have received considerable attention owing to their high surface area, relatively low density, large accessible space, and variable chemical composition. [40][41][42] Research interests in the applications of porous material-based PEC sensors were rapidly increasing, particularly in the eld of determining environmental pollutants. 43 Due to their unique structure, porous materials are preferred over bulk materials for photoelectrochemical determination of environmental contaminants.…”

Section: Bin Caimentioning

confidence: 99%

Recent advances in photoelectrochemical platforms based on porous materials for environmental pollutant detection

Liu,

Zhan,

Cai

2024

RSC Adv.

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Section: Bin Caimentioning

confidence: 99%

Recent advances in photoelectrochemical platforms based on porous materials for environmental pollutant detection

Liu,

Zhan,

Cai

2024

RSC Adv.

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“…The most common coordinating atoms for anchoring metal centers in carbon-based SACs are nitrogen (N) atoms, which have similar atomic radii to carbon, but higher electronegativity. Therefore, the extensive research and documentation have focused on catalysts featuring M-N 4 -type sites [66,67]. However, even with the same N element, different types of N atoms (pyridinic N/pyrrolic N) can lead to discrepancies in the catalytic performance.…”

Section: The Types Of Coordination Atomsmentioning

confidence: 99%

Enhancing Hydrogen Peroxide Synthesis through Coordination Engineering of Single-Atom Catalysts in the Oxygen Reduction Reaction: A Review

He,

Wang,

Shi

et al. 2023

Energies

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Hydrogen peroxide (H2O2) is an important chemical with a diverse array of applications. However, the existing scenario of centralized high-concentration production is in contrast with the demand for low-concentration decentralized production. In this context, the on-site green and efficient two-electron oxygen reduction reaction (ORR) for H2O2 production has developed into a promising synthetic approach. The development of low-cost, highly active, and durable advanced catalysts is the core requirement for realizing this approach. In recent years, single-atom catalysts (SACs) have become a research hotspot owing to their maximum atom utilization efficiency, tunable electronic structure, and exceptional catalytic performance. The coordination engineering of SACs is one of the key strategies to unlock their full potential for electrocatalytic H2O2 synthesis and holds significant research value. Despite considerable efforts, precisely controlling the electronic structure of active sites in SACs remains challenging. Therefore, this review summarizes the latest progress in coordination engineering strategies for SACs, aiming to elucidate the relevance between structure and performance. Our goal is to provide valuable guidance and insights to aid in the design and development of high-performance SACs for electrocatalytic H2O2 synthesis.

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“…Hydrogen peroxide (H 2 O 2 ), the most essential molecule, plays a crucial role in biological and chemical engineering, and environmental applications. − Notably, excessive and high concentrations of H 2 O 2 could exert adverse effects on human health, and the change in H 2 O 2 concentration in living systems is associated with various cellular functions. , Hence, developing a straightforward and sensitive approach for fast and precise monitoring of H 2 O 2 levels in different media is of great significance. The electrochemical sensor is a reliable approach for detecting and quantifying H 2 O 2 with the merits of low cost, quick response, and high sensitivity. − It is worth noting that electrochemical sensors based on nanomaterials that feature biomimetic enzyme-like activity toward H 2 O 2 are more favored due to the complicated electrode modification process of natural enzyme-based sensors and the susceptible inactivation of natural enzymes affected by temperature, humidity, and pH .…”

Section: Introductionmentioning

confidence: 99%

Single-Atom Ru Biomimetic Nanozyme for the Electrochemical Sensing of Hydrogen Peroxide

Jia,

Yu,

Hamed

et al. 2024

ACS Appl. Nano Mater.

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A rational design of high-efficiency single atoms represents a desirable goal for the construction of efficient electrochemical devices. Nevertheless, their activity is constricted by the exposure of single atoms to reactants. Herein, novel ruthenium (Ru) single atom anchored on graphene frameworks (GFs) that feature interconnected porous structures (defined as Ru SA/GFs) is synthesized through a one-step photoreduction strategy. Ru SA/GFs possess additional structural merits that favor promoting reactant transport and maximizing the efficacy of single atoms, which manifest notable amplified electrocatalytic-reduction activity toward hydrogen peroxide (H2O2) than that of Ru nanoparticles/GFs, indicating the remarkable biomimetic nanozyme-like activity of Ru SA/GFs toward H2O2. Density functional theory (DFT) calculations reveal that Ru SA/GFs with atomically dispersed Ru significantly facilitate the electrochemical reduction efficiency toward H2O2. In addition, a sensitive Ru SA/GFs-based electrochemical sensing platform for the detection of H2O2 with a low detection limit of 0.063 μM is developed and demonstrated. This work not only exploits an innovative approach to synthesize single-atom Ru anchored on GFs for the construction of an efficient biomimetic H2O2 electrochemical sensor but also contributes to the broader utilization of Ru single atom in the advancement of diverse high-performance electrochemical devices.

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In-situ monitoring of hydrogen peroxide production at nickel single-atom electrocatalyst

Cited by 15 publications

References 50 publications

Recent advances in photoelectrochemical platforms based on porous materials for environmental pollutant detection

Recent advances in photoelectrochemical platforms based on porous materials for environmental pollutant detection

Enhancing Hydrogen Peroxide Synthesis through Coordination Engineering of Single-Atom Catalysts in the Oxygen Reduction Reaction: A Review

Single-Atom Ru Biomimetic Nanozyme for the Electrochemical Sensing of Hydrogen Peroxide

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