Nickel nanoparticles decorated on carbon quantum dots as a novel non-platinum catalyst for methanol oxidation; a green, low-cost, electrochemically-synthesized electrocatalyst

Javan, Hakimeh; Asghari, Elnaz; Ashassi-Sorkhabi, Habib; Moradi-Haghighi, M.

doi:10.1016/j.ces.2020.115534

Cited by 33 publications

(17 citation statements)

References 64 publications

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“…Exfoliation of the graphite anode rod at voltages between 30 and 40 V has been done in Javan et al 134 study to synthesis CQD. The solution was stirred for a period of five days to achieve a homogeneous dark brown mix.…”

Section: Synthesis Methodsmentioning

confidence: 99%

“…CQDs synthesis through the electrochemical process 134 [Colour figure can be viewed at wileyonlinelibrary.com]…”

Section: Synthesis Methodsmentioning

confidence: 99%

“…Researchers have further exploited CQDs with CA and L-cysteine and have been able to add molecular organic salts to precursors for nitrogen and sulfur doped CQDs (N, S-CQDs). 152 Particles of N, S-CQDs have a diameter of 8 and 12 nm with F I G U R E 1 0 CQDs synthesis through the electrochemical process 134 [Colour figure can be viewed at wileyonlinelibrary.com] 2 nm of thickness. It also displays high emission and high returns.…”

Section: Hydrothermal Methodsmentioning

confidence: 99%

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Carbon and graphene quantum dots in fuel cell application: An overview

2020

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Summary Carbon quantum dots (CQD) and graphene quantum dots (GQDs) have been mentioned frequently. They have been selected in recent studies as they have unique and remarkable potential, especially in electrical, optical, and optoelectrical properties. CQD and GQDs have very high chemical and physical stability due to inherent inert carbon material, thus newly recognized as a kind of quantum dots material. Its environmentally friendly, non‐toxic, and naturally inactive nature is also a major attraction for scientists around the world. In this work, CQD and GQDs production methods are discussed in detail, including soft‐template method, hydrothermal method, microwave‐assisted hydrothermal (MAH) method, metal‐catalyzed method, liquid exfoliation method, electron beam lithography method, and others. Additive material has been introduced in CQD and GQDs to increase the ability and performance of CQD and GQDs such as nitrogen, sulfur, chlorine, fluorine, and potassium. In particular, the presence of additive material in CQD and GQDs shows an advantage in terms of energy level, which is very good at achieving specific requirements in properties such as optical, electrical, and optoelectrical. In addition, the existence of functional groups consisting of heteroatoms such as oxygen, nitrogen, sulfur, phosphorus, boron, and so on of zero‐dimensional carbon materials in providing an overabundance of the active electrochemical site for the reaction. The product of CQD and GQDs has various shapes and sizes influenced by several parameters such as synthesis temperature, growth time, source concentration, catalyst, and so on. The application of CQDs and GQDs composites in fuel cells has been clearly and scientifically stated as it has enhanced the performance of fuel cell technology.

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Section: Synthesis Methodsmentioning

confidence: 99%

“…CQDs synthesis through the electrochemical process 134 [Colour figure can be viewed at wileyonlinelibrary.com]…”

Section: Synthesis Methodsmentioning

confidence: 99%

Section: Hydrothermal Methodsmentioning

confidence: 99%

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Carbon and graphene quantum dots in fuel cell application: An overview

2020

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“…Ni nanoparticles decorated CQDs modified glassy carbon electrode (Ni-NPs/RCQD/GCE) produce higher methanol oxidation peak current density of 32 mA cm -2 at a lower voltage of 0.56 V (vs. Ag/AgCl) compared to Ni-NPs/GCE. 60 The enhanced activity of Ni-NPs/RCQD/GCE is owing to the increased electroactive area offered by CQDs and strong interaction between Ni-NPs and CQDs, favouring rapid methanol oxidation process and enhanced electron transfer kinetics. The confinement effect of CQDs prevents the agglomeration of Ni-NPs that result into uniform morphology and thus increasing the stability of the catalyst during oxidation process.…”

Section: Carbon Quantum Dotmentioning

confidence: 99%

Performance and application of carbon-based electrocatalysts in direct methanol fuel cell

Baruah

Deb

2021

Mater. Adv.

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“…[26][27][28][29][30] In view of the importance of electrocatalytic reactions, researchers are committed to developing low-cost, high-activity, and durable alternative catalysts, including metal-based catalysts, non-metal carbon materials, and transition metal oxide materials, but the stability and electrocatalytic activity are still unsatisfactory. [31][32][33][34] Carbon materials have been widely used as electrocatalyst carriers due to their good electrical conductivity, large surface area, and strong stability. [35][36][37][38] Carbon dots (CDs) are a new type of carbon nanomaterials.…”

mentioning

confidence: 99%

Computational Studies on Carbon Dots Electrocatalysis: A Review

Song

Xue

et al. 2021

Adv Funct Materials

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Electrocatalytic reactions possess wide application prospects in solving the energy crisis. Recently, the emerging 0D carbon dots (CDs) have become potential candidate materials due to their low cost, high conductivity, easy modification, and simple synthesis. CDs-based composite materials showcase attractive electrocatalytic performances because of the abundant active sites and charge distribution on the material surface. Considering the complicated structure of CDs, it's important to identify the specific catalytic activity source and understand catalytic mechanisms with the aid of theoretical method. In this review, the latest advancements are presented on improving the electrocatalytic activity and stability of CDs-based composite materials from theoretical perspective. Meanwhile, the opportunity and challenges about developing high-performance CDs catalysts are also highlighted.

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Nickel nanoparticles decorated on carbon quantum dots as a novel non-platinum catalyst for methanol oxidation; a green, low-cost, electrochemically-synthesized electrocatalyst

Cited by 33 publications

References 64 publications

Carbon and graphene quantum dots in fuel cell application: An overview

Carbon and graphene quantum dots in fuel cell application: An overview

Performance and application of carbon-based electrocatalysts in direct methanol fuel cell

Computational Studies on Carbon Dots Electrocatalysis: A Review

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