Afficher la couverture 'The importance of the shape of Cu2O nanocrystals on plasmon-enhanced oxygen evolution reaction in alkaline media | Saada, Tamazouzt Nait' en grand format
/5

0 avis

The importance of the shape of Cu2O nanocrystals on plasmon-enhanced oxygen evolution reaction in alkaline media

Archive ouverte : Article de revue

Saada, Tamazouzt Nait | Pang, Liuqing | Sravan Kumar, Kilaparthi | Dourado, André H.B. | Germano, Lucas | Vicentini, Eduardo | Batista, Ana P.L. | de Oliveira-Filho, Antonio G.S. | Dumeignil, Franck | Paul, Sébastien | Wojcieszak, Robert | Melinte, Sorin | Sandu, Georgiana | Petretto, Guido | Rignanese, Gian-Marco | Braga, Adriano Henrique | Rosado, Taissa | Meziane, Dalila | Boukherroub, Rabah | de Torresi, Susana | da Silva, Anderson G.M. | Szunerits, Sabine

Edité par HAL CCSD ; Elsevier

International audience. Cu2O nanostructures of cubic or octahedral shape as well as decorated with gold nanoparticles were synthesized by a chemical process. The electrochemical activity of these nanostructures for the oxygen evolution reaction (OER) in alkaline media was assessed in the dark and under solar light irradiation. Electrodes modified with cubic-shaped Cu2O and Cu2O-Au nanostructures revealed both enhanced electrocatalytic OER activity over the octahedral-shaped ones, for which hydroxylation of the (111) surfaces might hinder the OER as supported by numerical computations. Illumination of Cu2O nanostructures with solar light did not enhance the electrocatalytic OER. Cu2O-Au nanostructures, however, showed improved OER activity with an overpotential of 200 mV (10 mA cm−2) and a Tafel slope of 97 mV dec−1. The enhanced OER activity was ascribed to increased light absorption due to the plasmonic properties of Cu2O-Au cubes.

Consulter en ligne

Suggestions

Du même auteur

Plasmon-driven electrochemical methanol oxidation on gold nanohole electrod...

Archive ouverte: Article de revue

Pang, Liuqing | 2020-11-11

International audience. Direct methanol oxidation is expected to play a central role in low-polluting future power sources. However, the sluggish and complex electro-oxidation of methanol is one of the limiting fact...

Hybrid Conversion of 5 ‐Hydroxymethylfurfural to 5 ‐Aminomethyl‐ 2 ‐furanca...

Archive ouverte: Article de revue

Lancien, Antoine | 2021

International audience. Hybrid catalysis, which combines chemo- and biocatalytic benefits, is an efficient way to address green chemistry principles. 5-Hydroxymethylfurfural (HMF) is a versatile building block in nu...

Enhanced electrocatalytic activity of PtRu/nitrogen and sulphur co-doped cr...

Archive ouverte: Article de revue

Pang, Liuqing | 2021-05-15

International audience. The low mass activity and high price of pure platinum (Pt)-based catalysts predominantly limit their large-scale utilization in electrocatalysis. Therefore, the reduction of Pt amount while p...

Du même sujet

Essence of decision : explaining the Cuban missile crisis / Graham Allison,...

Livre | Allison, Graham Tillett (1940-....). Auteur | 1999 - 2nd edition

Three novel rhamnogalacturonan I- pectins degrading enzymes from Aspergillu...

Archive ouverte: Article de revue

Lemaire, Adrien | 2020-11-15

International audience

Non-Enzymatic Glucose Sensing Using Carbon Quantum Dots Decorated with Copp...

Archive ouverte: Article de revue

Maaoui, Houcem | 2016-10-18

International audience. Perturbations in glucose homeostasis is critical for human health, as hyperglycemia (defining diabetes) leads to premature death caused by macrovascular and microvascular complications. Howev...

A Deeper Investigation of Drug Degradation Mixtures Using a Combination of ...

Archive ouverte: Article de revue

Palaric, Cécile | 2019-05

International audience. A global approach that is based on a combination of mass spectrometry (MS) and nuclear magnetic resonance (NMR) data has been developed for a complete and rapid understanding of drug degradat...

In Vitro Assessment of the Impact of Industrial Processes on the Gastrointe...

Archive ouverte: Article de revue

Atallah, Nathalie | 2020-11

International audience. The goal of this study was to determine the impact of industrial processes on the digestion of six milk protein matrices using the harmonized INFOGEST in vitro static digestion protocol. Firs...

The Burning Coal Heap at La Ricamarie, Loire Coal Basin, France

Archive ouverte: Type de document indéfini

Thiéry, V. | 2018

International audience. [No abstract available]

Chargement des enrichissements...