Carbon quantum dots enhanced the activity for the hydrogen evolution reaction in ruthenium-based electrocatalysts

Li, Weidong; Wei, Zhihong; Wang, Boyang; Liu, Yuan; Song, Haoqiang; Tang, Zhiyong; Yang, Bai; Lu, Siyu

doi:10.1039/c9qm00618d

Cited by 123 publications

(60 citation statements)

References 49 publications

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“…The number of electroactive sites and electrolyte ion accessibility play a major role in the performance of the electrochemical system along with the porosity, specific surface area, and morphology of the active material. 40 The combined effect of two different TMOs increases the number of electroactive sites as well as the potential window. In addition to their low-cost, abundant availability and eco-friendliness make MTMOs excellent candidates for active electrode materials.…”

Section: Introductionmentioning

confidence: 99%

Bimetallic tungstate nanoparticle-decorated-lignin electrodes for flexible supercapacitors

et al. 2020

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Section: Introductionmentioning

confidence: 99%

Bimetallic tungstate nanoparticle-decorated-lignin electrodes for flexible supercapacitors

et al. 2020

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“…These properties also help CD particles to act as efficient support material towards metal and carbon (graphene, graphitic carbon nitrides etc.) by boosting their surface area to volume ratio and electronic properties [26][27][28][29][30][31]. Since their first application as electrocatalysts, there has been rapid development in CD based electrocatalysis, specifically, metal free carbon-based catalysts.…”

Section: -D CD Nanoparticles For Electrocatalysismentioning

confidence: 99%

“…Li et al, reported CQD supported enhanced activity of ruthenium (Ru) nanocatalyst for HER [31]. The catalytic activity largely depended on the crystallinity and confinement effects.…”

Section: Cnd/cqd Supported Metallic and Nonmetallic Nanoparticlesmentioning

confidence: 99%

Contribution of Carbon Dot Nanoparticles in Electrocatalysis: Development in Energy Conversion Process

Jana

Ngo

Chung

et al. 2020

J. Electrochem. Sci. Technol

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Modern electrochemical energy devices involve generation and reduction of fuel gases through electrochemical reactions of water splitting, alcohol oxidation, oxygen reduction, etc. Initially, these processes were executed in the presence of noble metal-based catalyst that showed low overpotential and high current density. However, its high cost, unavailability, corrosion and related toxicity limited its application. The search for alternative with high stability, durability, and efficiency led scientists towards carbon nanoparticles supported catalysts which has high surface area, good electrical conductivity, tunable morphology, low cost, ease of synthesis and stability. Carbon nanoparticles are classified into two groups based on morphology, one and zero dimensional particles. Carbon nanoparticles at zero dimension, denoted as carbon dots, are less used carbon support compared to other forms. However, recently carbon dots with improved electronic properties have become popular as catalyst as well as catalyst support. This review focused on the recent advances in electrocatalytic activities of carbon dots. The mechanisms of common electrocatalytic reactions and the role of the catalysts are also discussed. The review also proposed future developments and other research directions to overcome current limitations.

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“…[1,2] Hydrogen (H 2 ) is regarded as one of the most potential clean energy sources due to its high energy density, no carbon emission, and unpolluted feature. [3][4][5][6][7][8][9] Until now, electrochemical water splitting is deemed as an essential and effective method to prepare H 2 because of its high purity of product and little energy waste. [10][11][12][13] However, hydrogen evolution reaction (HER) in nonacidic conditions should be paid much attention because it is a direct hydrogen production half-reaction which reaction rate is much more sluggish than that in acid.…”

Section: Introductionmentioning

confidence: 99%

Growth of Highly Active Amorphous RuCu Nanosheets on Cu Nanotubes for the Hydrogen Evolution Reaction in Wide pH Values

Cao

Wang

et al. 2020

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Rational design of low‐cost, highly efficient, and stable electrocatalysts for the hydrogen evolution reaction (HER) has attracted wide attention. Herein, 3D RuCu nanocrystals (NCs) are successfully synthesized by a facile wet chemistry method, in which amorphous RuCu nanosheets are directly grown on crystalline Cu nanotubes (NTs). Importantly, the obtained 3D RuCu NCs only need 18 and 73 mV to deliver the current density of 10 mA cm−2 for HER in alkaline and neutral media, respectively. Density functional theory calculations and experiments reveal that the Ru sites on the surface of amorphous nanosheets are the highly active centers for HER. Moreover, this catalyst can expose more surface area for water splitting compared to pure nanosheets because the unique 3D structure can effectively prevent the aggregation of nanosheets. Meanwhile, the interface between amorphous nanosheets and crystalline NTs is essential to boost the HER performance because the amorphous phase with many unsaturated bonds can facilitate adsorption of reactants and crystalline Cu with superior conductivity can promote the transfer of electrons. This work provides a facile method to prepare an original 3D Ru‐based electrocatalyst with highly active HER performance in wide pH values.

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Carbon quantum dots enhanced the activity for the hydrogen evolution reaction in ruthenium-based electrocatalysts

Abstract: The Ru supported on Porphyra-CQDs exhibited better dispersibility and the highest activity compared with biomass Porphyra and Porphyra activated carbon owing to the strong coordination interactions between Ru and CQDs.

Cited by 123 publications

References 49 publications

Bimetallic tungstate nanoparticle-decorated-lignin electrodes for flexible supercapacitors

Bimetallic tungstate nanoparticle-decorated-lignin electrodes for flexible supercapacitors

Contribution of Carbon Dot Nanoparticles in Electrocatalysis: Development in Energy Conversion Process

Growth of Highly Active Amorphous RuCu Nanosheets on Cu Nanotubes for the Hydrogen Evolution Reaction in Wide pH Values

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