4.6 Article

Janus (Mo/β-Mo2C)@C heterostructure as an efficient electrocatalyst for the hydrogen evolution reaction in acidic and alkaline media

Related references

Note: Only part of the references are listed.
Review Chemistry, Physical

Recent advances in structural engineering of 2D hexagonal boron nitride electrocatalysts

Madiha Rafiq et al.

Summary: Researchers summarized the importance of hexagonal boron nitride (h-BN) as a two-dimensional material in the field of green energy applications, and introduced its potential applications in energy conversion. The article discussed modification strategies to convert insulating h-BN into conductive materials and its progress and applications as an electrocatalyst.

NANO ENERGY (2022)

Review Chemistry, Inorganic & Nuclear

Electrochemical CO2 reduction (CO2RR) to multi-carbon products over copper-based catalysts

Abebe Reda Woldu et al.

Summary: The article provides a brief overview of CO2RR and discusses recent advances in improving the activity and selectivity of Cu-based nanomaterials for CO2 reduction to multi-carbon products. It reviews different types of Cu nanoparticles, Cu nanocrystals with low- and high-index facets, and other Cu-based nanostructures for CO2RR. The aim of the review is to offer new insights and prospects for future research on CO2RR selectivity using Cu-based catalysts.

COORDINATION CHEMISTRY REVIEWS (2022)

Article Chemistry, Multidisciplinary

Hydrogen Spillover-Bridged Volmer/Tafel Processes EnablingAmpere-Level Current Density Alkaline Hydrogen EvolutionReaction under Low Overpotential

Huai Qin Fu et al.

Summary: This study presents a new approach for water-alkaline electrolysis hydrogen production, which enables the operation at ampere-level current densities under low overpotentials with the use of hydrogen spillover-bridged water dissociation/hydrogen formation processes and synergistically hybridized catalysts. Mechanistic insights critical to enable ampere-level current density operation are revealed through experimental and theoretical studies.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022)

Article Nanoscience & Nanotechnology

Urchin-like PdOs nanostructure for hydrogen evolution electrocatalysis

Ziqiang Wang et al.

Summary: In this study, PdOs nanospine assemblies with urchin-like structures were fabricated via a one-step route. These assemblies exhibited superior performance for HER in alkaline and neutral solutions, as well as excellent long-term stability. This research provides a universal approach for the fabrication of active Pd-based catalysts with multi-branched morphology.

NANOTECHNOLOGY (2022)

Article Chemistry, Physical

The Synergistic Effect of Pyrrolic-N and Pyridinic-N with Pt Under Strong Metal-Support Interaction to Achieve High-Performance Alkaline Hydrogen Evolution

Wenhao Yu et al.

Summary: This study successfully develops Pt/X-NCNT (X = 4, 8, 12, 16) catalysts with strong metal-support interaction (SMSI), which shows significant potential for hydrogen production by water electrolysis at high current density conditions. In-situ and ex-situ experiments and density functional theory simulations reveal the synergistic effect of various nitrogen functional groups and Pt under SMSI, optimizing the Gibbs free energies of reaction intermediates.

ADVANCED ENERGY MATERIALS (2022)

Article Materials Science, Multidisciplinary

MXene-Based Quantum Dots Optimize Hydrogen Production via Spontaneous Evolution of Cl- to O-Terminated Surface Groups

Yuhua Liu et al.

Summary: MXene quantum dots (MQDs) offer wide applications due to their abundant surface chemistry, tunable energy-level structure, and unique properties. However, controlling the types of surface groups and tuning the energy-level structure remains a challenge. In this study, we demonstrated the spontaneous evolution of surface groups in Ti2CTx MQDs, resulting in a low Gibbs free energy in the hydrogen evolution reaction (HER). Our findings also showed excellent operational stability in HER.

ENERGY & ENVIRONMENTAL MATERIALS (2022)

Article Nanoscience & Nanotechnology

Highly Durable and Efficient Ni-FeOx/FeNi3 Electrocatalysts Synthesized by a Facile In Situ Combustion-Based Method for Overall Water Splitting with Large Current Densities

Abdul Qayum et al.

Summary: In this study, a durable and bifunctional Ni-FeOx/FeNi3/NF catalyst was prepared through in situ solution combustion and subsequent calcination, showing excellent alkaline water splitting activity and stability.

ACS APPLIED MATERIALS & INTERFACES (2022)

Article Materials Science, Multidisciplinary

Se-NiSe2 hybrid nanosheet arrays with self-regulated elemental Se for efficient alkaline water splitting

Xiang Peng et al.

Summary: Hybrid nanosheets of Se-NiSe 2 exhibit excellent electrocatalytic activity for water splitting, and a high-efficiency bifunctional electrocatalyst is achieved by controlling the ratio of ionic selenium to elemental selenium on carbon cloth. The optimized electrocatalyst shows low overpotentials and high current densities for hydrogen and oxygen generation in 1.0 mol L -1 KOH. Density functional theory calculations reveal that surface-adsorbed elemental selenium optimizes the electron environment and the adsorption/desorption free energy of hydrogen/water. The appropriate ratio of ionic selenium to elemental selenium improves the catalytic activity and kinetics, and the optimized adsorption amount of elemental selenium balances the interactions between them.

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY (2022)

Article Chemistry, Physical

Metastable Phase-Controlled Synthesis of Mesoporous Molybdenum Carbides for Efficient Alkaline Hydrogen Evolution

Du San Baek et al.

Summary: Transition metal carbides (TMCs) are considered as nonprecious metal electrocatalysts with Pt-like catalytic activity, showing great potential in electrochemical energy conversion reactions. This study explores the synthesis of mesoporous molybdenum carbides with controlled carbon overlayer thickness for efficient alkaline hydrogen evolution reaction (HER) electrocatalysis. It has been found that the choice of Mo precursor and nanospace-confined carburization are critical factors in forming mesoporous molybdenum carbides with a large catalytically active surface area. The thickness of the carbon overlayer on the surfaces of the molybdenum carbides can be controlled by carburization temperature and H-2 post annealing, resulting in enhanced alkaline HER activity.

ACS CATALYSIS (2022)

Article Chemistry, Physical

Plasmon-enhanced hydrogen evolution on Pt-anchored titanium nitride nanowire arrays

Jintao Zhang et al.

Summary: Plasmonic materials integrated with electrochemical catalysts, such as non-noble TiN and Pt nanoparticles, have been prepared as an efficient catalyst for the hydrogen evolution reaction. The study demonstrates the significant improvement in the HER properties, with reduced overpotential and enhanced catalytic activity. The enhanced effect is attributed to the surface plasmon resonance generated by TiN nanowire arrays, providing fundamental understanding and insights for the design of non-noble electrocatalysts.

APPLIED SURFACE SCIENCE (2022)

Article Chemistry, Physical

Recent advances in non-noble metal-based bifunctional electrocatalysts for overall seawater splitting

Hao Zhang et al.

Summary: Seawater electrolysis is an attractive method for clean energy/hydrogen production due to the abundance of seawater. However, the scarcity of precious metals and inadequate materials pose challenges in obtaining bifunctional electrocatalysts with high catalytic activity and durability. This review introduces the mechanism and challenges of seawater electrolysis and summarizes optimization strategies for non-noble-metal-based electrocatalysts to provide guidance for the commercialization of seawater electrolysis.

JOURNAL OF ALLOYS AND COMPOUNDS (2022)

Article Chemistry, Physical

Interfacial engineering of Co nanoparticles/Co2C nanowires boosts overall water splitting kinetics

Pengyan Wang et al.

Summary: The study shows that by combining metallic cobalt nanoparticles with Co2C nanowires through interface engineering, a significantly reduced overpotential and high activity in water electrolysis can be achieved. The assembled electrolyzer, driven by a solar cell, presents a novel approach for the rational design of metal carbide-based highly efficient electrocatalysts.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

Article Engineering, Environmental

TiO2 film supported by vertically aligned gold nanorod superlattice array for enhanced photocatalytic hydrogen evolution

Liangsheng Hu et al.

Summary: The study demonstrates the significant enhancement of photocatalytic performance of O-AuNRs/TiO2 architecture, increasing the hydrogen evolution rate of the TiO2 film by 58 times. The photocatalytic efficiency of O-AuNRs/TiO2 exceeds that of the TiO2 film supported by randomly oriented AuNRs by over five times.

CHEMICAL ENGINEERING JOURNAL (2021)

Article Chemistry, Multidisciplinary

Ordered Macroporous Superstructure of Nitrogen-Doped Nanoporous Carbon Implanted with Ultrafine Ru Nanoclusters for Efficient pH-Universal Hydrogen Evolution Reaction

Yu-Lin Wu et al.

Summary: This study has developed an ordered macroporous superstructure of N-doped nanoporous carbon anchored with ultrafine Ru nanoclusters for electrocatalytic micro/nanoreactors, showing unparalleled performance for pH-universal hydrogen evolution reactions. The superstructure exhibits significantly higher mass activity compared to the benchmark Pt/C, with remarkably low overpotential and ultra-high turnover frequency in alkaline solution.

ADVANCED MATERIALS (2021)

Article Chemistry, Physical

Coupling electrochemical CO2 conversion with CO2 capture

Ian Sullivan et al.

Summary: Electrochemical CO2 conversion into fuels or chemicals and CO2 capture from point or dilute sources are two important processes to address the gigaton challenges in reducing greenhouse gas emissions. Both processes are energy intensive, but synergistic coupling between them can improve energy efficiency and reduce costs, by eliminating the need for CO2 transport and storage or capture media regeneration.

NATURE CATALYSIS (2021)

Article Chemistry, Physical

Photonic Flash Synthesis of Mo2C/Graphene Electrocatalyst for the Hydrogen Evolution Reaction

Danick Reynard et al.

Summary: Molybdenum carbides (Mo2C) have been explored as alternative electrocatalysts for the hydrogen evolution reaction. A fast and simple fabrication method for Mo2C-based electrocatalysts on a carbon cloth substrate was proposed using photonic flash synthesis (PFS). The resulting material showed excellent catalytic performance and stability in acidic media.

ACS CATALYSIS (2021)

Article Nanoscience & Nanotechnology

Role of TiO2 coating layer on the performance of Cu2O photocathode in photoelectrochemical CO2 reduction

Muhammad Bilal Akbar et al.

Summary: This study systematically investigated the impact of deposition parameters of TiO2 overlayer on CO2 reduction performance, and found that the thickness and temperature of the TiO2 layer can influence its electron energy and stability, which in turn affect the selectivity of CO2 reduction.

NANOTECHNOLOGY (2021)

Article Chemistry, Physical

Incorporating ultra-small N-doped Mo2C nanoparticles onto 3D N-doped flower-like carbon nanospheres for robust electrocatalytic hydrogen evolution

Huifang Wei et al.

Summary: This study successfully synthesized nitrogen-doped molybdenum carbide nanoparticles and anchored them onto nitrogen-doped flower-like carbon nanospheres to form N-Mo2C/NFCNS composites as efficient hydrogen evolution reaction (HER) electrocatalysts. The composites exhibited impressive HER activities with low overpotential and excellent durability in both acidic and alkaline media.

NANO ENERGY (2021)

Article Engineering, Environmental

Insights into enhancement of photocatalytic properties of g-C3N4 by local electric field induced by polarization of MgO(111)

Zanling Huang et al.

Summary: This study systematically investigated the photocatalytic activities of a series of photocatalysts and found that the LEF effect of polar MgO(111) significantly improves the performance of GCN, while the traditional heterojunction effect plays a major role in the MgO(111)/GCN composite. The results reveal insights into the enhancement mechanism of photocatalysts with polar supporting materials and offer a simple strategy to optimize photocatalytic processes for efficient utilization of solar energy.

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING (2021)

Article Chemistry, Multidisciplinary

Adsorbing and Activating N2 on Heterogeneous Au-Fe3O4 Nanoparticles for N2 Fixation

Jin Zhang et al.

ADVANCED FUNCTIONAL MATERIALS (2020)

Review Chemistry, Multidisciplinary

Recent Advances in Electrocatalytic Hydrogen Evolution Using Nanoparticles

Jing Zhu et al.

CHEMICAL REVIEWS (2020)

Article Chemistry, Physical

New aspects of C2 selectivity in electrochemical CO2 reduction over oxide-derived copper

Aamir Hassan Shah et al.

PHYSICAL CHEMISTRY CHEMICAL PHYSICS (2020)

Article Chemistry, Physical

Enhanced N2-Fixation by Engineering the Edges of Two-Dimensional Transition-Metal Disulfides

Feifei Li et al.

JOURNAL OF PHYSICAL CHEMISTRY C (2019)

Article Multidisciplinary Sciences

Anomalous hydrogen evolution behavior in high-pH environment induced by locally generated hydronium ions

Xuesi Wang et al.

NATURE COMMUNICATIONS (2019)

Article Chemistry, Multidisciplinary

Field Effect Enhanced Hydrogen Evolution Reaction of MoS2 Nanosheets

Junhui Wang et al.

ADVANCED MATERIALS (2017)

Article Chemistry, Physical

Controllable synthesis of molybdenum-based electrocatalysts for a hydrogen evolution reaction

Junpo Guo et al.

JOURNAL OF MATERIALS CHEMISTRY A (2017)

Article Nanoscience & Nanotechnology

Unique Hierarchical Mo2C/C Nanosheet Hybrids as Active Electrocatalyst for Hydrogen Evolution Reaction

Can Wu et al.

ACS APPLIED MATERIALS & INTERFACES (2017)

Article Chemistry, Multidisciplinary

Cobalt-Doping in Molybdenum-Carbide Nanowires Toward Efficient Electrocatalytic Hydrogen Evolution

Huanlei Lin et al.

ADVANCED FUNCTIONAL MATERIALS (2016)

Article Chemistry, Multidisciplinary

Metallic WO2-Carbon Mesoporous Nanowires as Highly Efficient Electrocatalysts for Hydrogen Evolution Reaction

Rui Wu et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2015)

Article Chemistry, Multidisciplinary

Highly Active Electrocatalysis of the Hydrogen Evolution Reaction by Cobalt Phosphide Nanoparticles**

Eric J. Popczun et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2014)

Article Chemistry, Multidisciplinary

A nanoporous molybdenum carbide nanowire as an electrocatalyst for hydrogen evolution reaction

Lei Liao et al.

ENERGY & ENVIRONMENTAL SCIENCE (2014)

Article Chemistry, Multidisciplinary

Self-Supported Nanoporous Cobalt Phosphide Nanowire Arrays: An Efficient 3D Hydrogen-Evolving Cathode over the Wide Range of pH 0-14

Jingqi Tian et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2014)

Article Chemistry, Multidisciplinary

Nanostructured Nickel Phosphide as an Electrocatalyst for the Hydrogen Evolution Reaction

Eric J. Popczun et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2013)

Article Chemistry, Multidisciplinary

Molybdenum Boride and Carbide Catalyze Hydrogen Evolution in both Acidic and Basic Solutions

Heron Vrubel et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2012)