Synthesis of carbon quantum dot-doped NiCoP and enhanced electrocatalytic hydrogen evolution ability and mechanism

Bao, Ting; Song, Laizhou; Zhang, Shujuan

doi:10.1016/j.cej.2018.06.080

Cited by 70 publications

(31 citation statements)

References 27 publications

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“…The durability was checked by chronoamperometric measurements at 0.5 V vs Ag/AgCl in an O 2 -saturated 0.1 M HClO 4 electrolyte (89.4% relative current persisted in acidic medium after 21000s compared to 81.6% for Pt/C), which showed that the composite can further be used for fuel cells. Bao et al [40] prepared CQD/nickelcobalt phosphide (CQDs@NiCoP) catalysts through a facile annealing method for electrocatalytic hydrogen evolution reaction (HER), which yielded a lower initial overpotential than pure for NiCoP (108 vs.182 mV) and a lower Tafel slope (80 mVdecade -1 ). CQD aided high catalyst conductivity and significantly accelerated charge transfer.…”

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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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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“…Eqn (1) shows that protons from BH 4 À combine with electrons to form adsorbed H atoms. Eqn (3) shows that the active site on the catalyst combines with H in water to form an adsorbed hydrogen atom. As shown in Fig.…”

Section: Dft Calculationsmentioning

confidence: 99%

“…Hydrogen is a promising clean energy carrier and a promising future alternative to fossil fuels. [1][2][3][4][5][6] However, the production of hydrogen, and its efficient and safe storage, remain serious challenges that hinder practical applications. Sodium borohydride (NaBH 4 ) is a promising system address these issues, [7][8][9] owing to its high hydrogen density (10.8 wt%), good storage stability, nontoxicity, and safe reaction conditions.…”

Section: Introductionmentioning

confidence: 99%

A modified ‘skeleton/skin’ strategy for designing CoNiP nanosheets arrayed on graphene foam for on/off switching of NaBH₄ hydrolysis

Hong

Wang

et al. 2020

RSC Adv.

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“…[15] Carbon dots (CDs) are graphene derivatives with ultrafine layered structures smaller than 10 nm. [16] They host abundant surface functional groups with edge sites and a p-conjugated core structure,w hich is conducive to the development of nano-level advanced materials. [17] More importantly,t he small size of CDs allows metal precursors to be adsorbed onto them and so prevent severe aggregation.…”

Section: Introductionmentioning

confidence: 99%

Single Atom Ruthenium‐Doped CoP/CDs Nanosheets via Splicing of Carbon‐Dots for Robust Hydrogen Production

Song

Tang

et al. 2021

Angewandte Chemie

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Ultrathin two‐dimensional catalysts are attracting attention in the field of electrocatalytic hydrogen evolution. This work describe a composite material design in which CoP nanoparticles doped with Ru single‐atom sites supported on carbon dots (CDs) single‐layer nanosheets formed by splicing CDs (Ru1CoP/CDs). Small CD fragments bore abundant functional groups, analogous to pieces of a jigsaw puzzle, and could provide a high density of binding sites to immobilize Ru1CoP. The single‐particle‐thick nanosheets formed by splicing CDs acted as supports, which improved the conductivity of the electrocatalyst and the stability of the catalyst during operation. The Ru1CoP/CDs formed from doping atomic Ru dispersed on CoP showed very high efficiency for the hydrogen evolution reaction (HER) over a wide pH range. The catalyst prepared under optimized conditions displayed outstanding stability and activity: the overpotential for the HER at a current density of 10 mA cm−2 was as low as 51 and 49 mV under alkaline and acidic conditions, respectively. Density functional theory calculations showed that the substituted Ru single atoms lowered the proton‐coupled electron transfer energy barrier and promoted H−H bond formation, thereby enhancing catalytic performance for the HER. The findings open a new avenue for developing carbon‐based hybridization materials with integrated electrocatalytic performance for water splitting.

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Synthesis of carbon quantum dot-doped NiCoP and enhanced electrocatalytic hydrogen evolution ability and mechanism

Cited by 70 publications

References 27 publications

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

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

A modified ‘skeleton/skin’ strategy for designing CoNiP nanosheets arrayed on graphene foam for on/off switching of NaBH₄ hydrolysis

Single Atom Ruthenium‐Doped CoP/CDs Nanosheets via Splicing of Carbon‐Dots for Robust Hydrogen Production

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Synthesis of carbon quantum dot-doped NiCoP and enhanced electrocatalytic hydrogen evolution ability and mechanism

Cited by 70 publications

References 27 publications

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

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

A modified ‘skeleton/skin’ strategy for designing CoNiP nanosheets arrayed on graphene foam for on/off switching of NaBH4 hydrolysis

Single Atom Ruthenium‐Doped CoP/CDs Nanosheets via Splicing of Carbon‐Dots for Robust Hydrogen Production

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A modified ‘skeleton/skin’ strategy for designing CoNiP nanosheets arrayed on graphene foam for on/off switching of NaBH₄ hydrolysis