Structural-effects in electrocatalysis Oxygen reduction on the gold single crystal electrodes with (110) and (111) orientations

Marković, Nebojša

doi:10.1016/0368-1874(84)83681-3

Cited by 16 publications

(25 citation statements)

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“…Indeed, Au is experimentally known as the only transition metal that selectively reduces oxygen to H 2 O 2 . 52 However, although the selectivity is predicted, activating oxygen to form key intermediate OOH* becomes difficult due to the weak interaction of Au (111) surface with oxygen. Therefore, it costs a lot of energy to reduce oxygen to H 2 O 2 on Au (111) surface.…”

Section: Pure Metalsmentioning

confidence: 99%

A Review on Challenges and Successes in Atomic-Scale Design of Catalysts for Electrochemical Synthesis of Hydrogen Peroxide

et al. 2020

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Hydrogen peroxide is a valuable chemical oxidant with a wide range of applications in a variety of industrial processes, especially in water sanitization. Electrochemical synthesis of hydrogen peroxide (H 2 O 2 ) through two-electron oxygen reduction reaction (2e-ORR) or two-electron water oxidation reaction (2e-WOR) has emerged as an appealing process for onsite production of this chemically valuable oxidant. On-site produced H 2 O 2 can be applied for wastewater treatment in remote locations or any applications where H 2 O 2 is needed as an oxidizing agent. This contribution studies the theoretical efforts in understanding the challenges in catalysis for electrochemical synthesis of H 2 O 2 as well as providing design principles for more efficient catalyst materials.

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Section: Pure Metalsmentioning

confidence: 99%

A Review on Challenges and Successes in Atomic-Scale Design of Catalysts for Electrochemical Synthesis of Hydrogen Peroxide

et al. 2020

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“…Pd binds oxygen intermediates strongly and has a low ORR overpotential close to Pt [16]. Au shows remarkable variation in the kinetics and the mechanism of the ORR varying between 2-and 4-electrons process, depending on support, crystallographic orientation, size and pH [17][18][19]. Such behavior is common to all electrodes that interact weakly with O2 (i.e.…”

Section: Introductionmentioning

confidence: 99%

Electrocatalytic synthesis of hydrogen peroxide on Au-Pd nanoparticles: From fundamentals to continuous production

Pizzutilo

Kasian

Choi

et al. 2017

Chemical Physics Letters

111

114

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The electrochemical synthesis of hydrogen peroxide (H2O2) represents a promising alternative to the anthraquinone process, as it combines on-site chemical and electrical production. The design of selective electrocatalysts is challenging and is commonly based on the alloying of elements to generate a synergistic effects and increase activity. In the present work, we report the electrochemical activity of Au-Pd nanoparticles immobilized directly onto an electrode as a model to study H2O2 electrochemical synthesis from fundamentals to continuous production. The impact of composition on the oxygen reduction (ORR), on the selectivity, as well as the peroxide reduction and oxidation (PROR) are studied.

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“…On Au(1 0 0) single crystal surfaces the 4-electron mechanism dominates, on Au(1 1 1) and Au(1 1 0) the 2-electron mechanism is more significant. The activity of these facets is known to decrease in the order Au(1 0 0) > Au(1 1 0) > Au(1 1 1) [53,54]. Therefore by changing the relative proportions of these low index planes present on the surface of AuNPs one can essentially tune their ORR electrocatalytic activity [50,55].…”

Section: Gold Nanoparticlesmentioning

confidence: 99%

Monitoring of the Surface Modification of Nanoparticlesby Electrochemical Measurements Using Scanning Electrochemical Microscope

Hynek¹,

Žůrek²,

Babula³

et al. 2014

Modern Electrochemical Methods in Nano, Surface and Corrosion Science

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Structural-effects in electrocatalysis Oxygen reduction on the gold single crystal electrodes with (110) and (111) orientations

Cited by 16 publications

References 0 publications

A Review on Challenges and Successes in Atomic-Scale Design of Catalysts for Electrochemical Synthesis of Hydrogen Peroxide

A Review on Challenges and Successes in Atomic-Scale Design of Catalysts for Electrochemical Synthesis of Hydrogen Peroxide

Electrocatalytic synthesis of hydrogen peroxide on Au-Pd nanoparticles: From fundamentals to continuous production

Monitoring of the Surface Modification of Nanoparticlesby Electrochemical Measurements Using Scanning Electrochemical Microscope

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