Electrocatalytic Reduction of Oxygen on Platinum Nanoparticles in the Presence and Absence of Interactions with the Electrode Surface

Ostojic, Nevena; Crooks, Richard M.

doi:10.1021/acs.langmuir.6b02578

Cited by 13 publications

(52 citation statements)

References 72 publications

(127 reference statements)

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“…125,168 To optimize the performance of NPs toward electrocatalysis, a burgeoning area of research concerns support-induced effects. 169,170 For example, the supporting material for AuNPs can deeply affect their activities, as exhibited for AuNPs supported on carbon and on titania in the CO oxidation reaction. 171 Electrochemistry of catalytic interfacial gold nanofilms at the ITIES has several distinguishing features in comparison to electrochemical studies of AuNPs on solid electrode surfaces.…”

Section: Redox Electrocatalysismentioning

confidence: 99%

Gold Nanofilms at Liquid–Liquid Interfaces: An Emerging Platform for Redox Electrocatalysis, Nanoplasmonic Sensors, and Electrovariable Optics

et al. 2018

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The functionality of liquid-liquid interfaces formed between two immiscible electrolyte solutions (ITIES) can be markedly enhanced by modification with supramolecular assemblies or solid nanomaterials. The focus of this Review is recent progress involving ITIES modified with floating assemblies of gold nanoparticles or "nanofilms". Experimental methods to controllably modify liquid-liquid interfaces with gold nanofilms are detailed. Also, we outline an array of techniques to characterize these gold nanofilms in terms of their physiochemical properties (such as reflectivity, conductivity, catalytic activity, or plasmonic properties) and physical interfacial properties (for example, interparticle spacing and immersion depth at the interface). The ability of floating gold nanofilms to impact a diverse range of fields is demonstrated: in particular, redox electrocatalysis, surface-enhanced Raman spectroscopy (SERS) or surface plasmon resonance (SPR) based sensors, and electrovariable optical devices. Finally, perspectives on applications beyond the state-of-the-art are provided.

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Section: Redox Electrocatalysismentioning

confidence: 99%

Gold Nanofilms at Liquid–Liquid Interfaces: An Emerging Platform for Redox Electrocatalysis, Nanoplasmonic Sensors, and Electrovariable Optics

et al. 2018

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“…The same exploration was applied on the naked Pt NPs which could interact with electrode directly, finding that the dendrimers had little influence on the electrocatalytic properties of Pt NPs (Figure b). In other words, the PAMAM dendrimers could be used as a perfect agent to study electrocatalytic reactions in the presence and absence of support interactions …”

Section: Development Of Nanoimpact Methodsmentioning

confidence: 99%

Section: Development Of Nanoimpact Methodsmentioning

confidence: 99%

“…In other words, the PAMAM dendrimers could be used as a perfect agent to study electrocatalytic reactions in the presence and absence of support interactions. [29] Some other works focused on the catalytic reaction itself were published and the understanding of catalytic reaction at single particle scale was significantly improved. [30] It was demonstrated that the catalytic activity of silica nanoparticle-enzyme hybrids toward hydrogen peroxide decomposition was comparable to that of a freely diffusing enzyme in solution.…”

Section: C) Current Transients Of Particles Collision Onmentioning

confidence: 99%

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Single Particle Electrochemistry of Collision

Zou

Hou

et al. 2019

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A novel electrochemistry method using stochastic collision of particles at microelectrode to study their performance in single‐particle scale has obtained remarkable development in recent years. This convenient and swift analytical method, which can be called “nanoimpact,” is focused on the electrochemical process of the single particle rather than in complex ensemble systems. Many researchers have applied this nanoimpact method to investigate various kinds of materials in many research fields, including sensing, electrochemical catalysis, and energy storage. However, the ways how they utilize the method are quite different and the key points can be classified into four sorts: sensing particles at ultralow concentration, theory optimization, kinetics of mediated catalytic reaction, and redox electrochemistry of the particles. This review gives a brief overview of the development of the nanoimpact method from the four aspects in a new perspective.

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“…Additionally, very large electric fields are required to study reactions at NPs in bipolar conditions. As interactions between catalytic particles and the supporting material are receiving more and more interest, 119,120 these approaches are expected to be implemented to study these effects in detail.…”

mentioning

confidence: 99%

Redox Electrocatalysis of Floating Nanoparticles: Determining Electrocatalytic Properties without the Influence of Solid Supports

Peljo

Scanlon

Olaya

et al. 2017

J. Phys. Chem. Lett.

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Redox electrocatalysis (catalysis of electron-transfer reactions by floating conductive particles) is discussed from the point-of-view of Fermi level equilibration, and an overall theoretical framework is given. Examples of redox electrocatalysis in solution, in bipolar configuration, and at liquid-liquid interfaces are provided, highlighting that bipolar and liquid-liquid interfacial systems allow the study of the electrocatalytic properties of particles without effects from the support, but only liquid-liquid interfaces allow measurement of the electrocatalytic current directly. Additionally, photoinduced redox electrocatalysis will be of interest, for example, to achieve water splitting.

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Electrocatalytic Reduction of Oxygen on Platinum Nanoparticles in the Presence and Absence of Interactions with the Electrode Surface

Cited by 13 publications

References 72 publications

Gold Nanofilms at Liquid–Liquid Interfaces: An Emerging Platform for Redox Electrocatalysis, Nanoplasmonic Sensors, and Electrovariable Optics

Gold Nanofilms at Liquid–Liquid Interfaces: An Emerging Platform for Redox Electrocatalysis, Nanoplasmonic Sensors, and Electrovariable Optics

Single Particle Electrochemistry of Collision

Redox Electrocatalysis of Floating Nanoparticles: Determining Electrocatalytic Properties without the Influence of Solid Supports

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