Polyaniline Derived N‐Doped Carbon‐Coated Cobalt Phosphide Nanoparticles Deposited on N‐Doped Graphene as an Efficient Electrocatalyst for Hydrogen Evolution Reaction

Ma, Jingwen; Wang, Min; Lei, Guangyu; Zhang, Guoliang; Zhang, Fengbao; Peng, Wenchao; Li, Yang

doi:10.1002/smll.201702895

Cited by 135 publications

(67 citation statements)

References 43 publications

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“…Compared with 2D graphene counterparts, 3D graphene nanostructures can hold interconnected networks with more surface areas and active sites in addition to hierarchical frameworks, which make them an ideal scaffold to inhibit the aggregation or stacking of subunits [42][43][44][45][46]. Further, doping heteroatoms like N into 3D graphene may significantly modify the electronic structure as well as benefit the intimate contact between graphene with dissimilar materials [47][48][49][50]. In this regard, combining 3D nitrogen-doped graphene with metal sulfides for efficient CO 2 conversion is appealing.…”

Section: Introductionmentioning

confidence: 99%

Near-infrared absorbing 2D/3D ZnIn2S4/N-doped graphene photocatalyst for highly efficient CO2 capture and photocatalytic reduction

et al. 2020

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Hierarchical heterostructure photocatalysts with broad spectrum solar light utilization, particularly in the nearinfrared (NIR) region, are emerging classes of advanced photocatalytic materials for solar-driven CO 2 conversion into value-added chemical feedstocks. Herein, a novel two-demensional/three-demensional (2D/3D) hierarchical composite is hydrothermally synthesized by assembling vertically-aligned ZnIn 2 S 4 (ZIS) nanowall arrays on nitrogen-doped graphene foams (NGF). The prepared ZIS/NGF composite shows enhancement in photothermal conversion ability and selective CO 2 capture as well as solar-driven CO 2 photoreduction. At 273 K and 1 atm, the ZIS/NGF composite with 1.0 wt% NGF achieves a comparably high CO 2-toN 2 selectivity of 30.1, with an isosteric heat of CO 2 adsorption of 48.2 kJ mol −1. And in the absence of cocatalysts and sacrificial agents, the ZIS/NGF composite with cyclability converts CO 2 into CH 4 , CO and CH 3 OH under simulated solar light illumination, with the respective evolution rates about 9.1, 3.5, and 5.9 times higher than that of the pristine ZIS. In-depth analysis using in-situ irradiated X-ray photoelectron spectroscopy (ISI-XPS) in conjunction with Kelvin probe measurements reveals the underlying charge transfer pathway and process from ZIS to NGF.

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Section: Introductionmentioning

confidence: 99%

Near-infrared absorbing 2D/3D ZnIn2S4/N-doped graphene photocatalyst for highly efficient CO2 capture and photocatalytic reduction

et al. 2020

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“…The negative binding energy shift of 0.5 eV is noticed for CoP‐HNCs than CoP NPs catalyst, indicating the electron transfer from CoP to carbon and strong ineteraction between CoP and nitrogen doped carbon nanotubes. It well known that the metal centerd catalytic active site is deactivated by the SCN − ions in acidic conditions ,. The influence of CoP‐HNCs and CoP by thiocyanate ions (SCN − ) on the HER is measured.…”

Section: Resultsmentioning

confidence: 99%

CoP Embedded in Hierarchical N‐Doped Carbon Nanotube Frameworks as Efficient Catalysts for the Hydrogen Evolution Reaction

2018

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Highly efficient, nonprecious and stable electrocatalysts for the hydrogen evolution reaction (HER) are absolutely crucial for renewable energy conversion, yet the design of such catalysts remains to be a long and arduous task. Herein, cobalt phosphide (CoP) nanoparticles (NPs) embedded in hierarchical N‐doped carbon nanotube frameworks (CoP‐HNCs) have been synthesized by controlled phosphidation of cobalt NPs embedded in hierarchical N‐doped carbon nanotube frameworks (Co‐HNCs). The Co‐HNCs were prepared by direct carbonization of Co‐based zeolitic imidazolate networks (ZIF‐67). Benefitting from multiple structural and compositional features, such as a multitude of catalytically active sites, a high degree of graphitization, and a thin carbon layer enclosing the NPs, CoP‐HNCs serve as a superior electrocatalyst towards the hydrogen evolution reaction. The synthesized CoP‐HNCs delivered a low overpotential at a current density of 10 mA cm−2 (η10) of 79 mV and 96 mV with small Tafel slope value of 45.6 mV dec−1 and 49.5 mV dec−1 in acidic and alkaline conditions, respectively. In addition, the catalyst showed long‐time durability under both acidic and alkaline electrolyte conditions, further demonstrating their potential to replace Pt‐based precious catalysts.

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“…Transition metals (i.e. cobalt, iron, molybdenum, nickle, and tungsten, etc) based electrocatalysts have attracted substantial attention as their promising electrocatalytic activity, such as nonprecious metal sulfides, carbides, selenides, phosphides, nitrides, and oxides would globally promote for potential green energy sustainability. Hence, inspired by these multiple challenges, the study for highly efficient, economical, earth abundant, and long‐term durability has been made of substantial interest toward earth‐abundant metals electrocatalysts for HER …”

Section: Introductionmentioning

confidence: 99%

Nonprecious metal's graphene‐supported electrocatalysts for hydrogen evolution reaction: Fundamentals to applications

2019

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Sustainable production of hydrogen is a hopeful requirement of a strategic future economy and development. Water splitting driven by electricity is a favorable pathway for renewable hydrogen production. This critical review highlighted recent efforts toward the development of the nanoscale synthesis of nonprecious metal's graphene‐supported electrocatalysts and their electrocatalytic features for remarkable hydrogen evolution reaction (HER). Different essential nonprecious metal's graphene‐supported electrocatalysts, including metal carbides, sulfides, phosphides, selenides, oxides, and nitrides are reviewed. In the exploration, attention is given to the strategies of activity enhancement, the synthetic approach, and the composition/structure electrocatalytic‐performance relationship of these HER electrocatalysts. We are hopeful that this review confers a new momentum to the rational design of remarkable performance nonprecious metal's graphene‐supported electrocatalysts and comprehensive guide for researchers to utilize the subject catalysts in regular water splitting.

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Polyaniline Derived N‐Doped Carbon‐Coated Cobalt Phosphide Nanoparticles Deposited on N‐Doped Graphene as an Efficient Electrocatalyst for Hydrogen Evolution Reaction

Cited by 135 publications

References 43 publications

Near-infrared absorbing 2D/3D ZnIn2S4/N-doped graphene photocatalyst for highly efficient CO2 capture and photocatalytic reduction

Near-infrared absorbing 2D/3D ZnIn2S4/N-doped graphene photocatalyst for highly efficient CO2 capture and photocatalytic reduction

CoP Embedded in Hierarchical N‐Doped Carbon Nanotube Frameworks as Efficient Catalysts for the Hydrogen Evolution Reaction

Nonprecious metal's graphene‐supported electrocatalysts for hydrogen evolution reaction: Fundamentals to applications

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