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Article
Chemistry, Physical
Velusamy Maheskumar et al.
Summary: In this study, a nanocomposite catalyst of FeNi2S4 nanoparticles/CoFe nanowires supported on nickel foam was prepared and showed excellent electrocatalytic performance. The FeNi2S4/CoFe electrode exhibited small overpotentials for oxygen and hydrogen evolution reactions and improved charge transfer processes. Furthermore, it also showed promising potential for urea-assisted water electrolysis with lower energy consumption. These results highlight the applications of nanoparticle and nanowire composite catalysts in wastewater treatment and green energy production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Hanwen Xu et al.
Summary: Amorphous chromium oxide confined Ni/NiO nanoparticles-assembled nanosheets were synthesized through an in-situ confined synthesis method, which showed fast reaction kinetics for urea oxidation reaction (UOR). The confinement effect of the in-situ generated CrOx overlay resulted in ultrafine Ni/NiO nanoparticles and rich interfaces. Both CrOx and metallic Ni promoted the formation of NiOOH species and electron transfer, leading to high intrinsic activity and fast reaction kinetics. The protective effect of the CrOx overlay also ensured robust working stability for UOR. Moreover, the Ni/NiO@CrOx nanosheets served as bifunctional catalysts for overall urea splitting with a low electrolysis cell voltage.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Review
Chemistry, Multidisciplinary
Hao Zhang et al.
Summary: Since the discovery of graphene, research on the family of 2D materials has flourished. Metal phosphorous chalcogenides (MPX3) have gained renewed attention due to their unique physical and chemical properties, making them excellent candidates for electrocatalysis. This review summarizes the recent applications of MPX3 electrocatalysts in reactions such as hydrogen evolution, oxygen evolution, and oxygen reduction. It also discusses effective research methods such as structural regulation, chemical doping, and multi-material composites to optimize the catalytic properties of these materials. The challenges and opportunities for electrocatalytic applications of MPX3 materials are also addressed, aiming to advance the development of MPX3 and related materials for electrocatalysis.
Article
Chemistry, Physical
Yumin Zhou et al.
Summary: In this study, nickel foam-supported Ni/W5N4 Mott-Schottky heterojunction nano-microspheres were synthesized as a highly active catalyst for urea-assisted water electrolysis. The catalyst exhibited excellent activity for both anodic urea oxidation reaction and cathodic hydrogen evolution reaction, with a high electrochemically active surface area. The catalyst had a low over-potential and could efficiently drive urea oxidation reaction and facilitate charge redistribution for hydrogen evolution reaction.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Shanqiang Gao et al.
Summary: In this study, bifunctional catalysts FeCo2O4@Co3O4 with a unique structure combining nanosheets and nanowires were synthesized on nickel foam through a simple hydrothermal + annealing method. These catalysts exhibited excellent catalytic activity for hydrogen production during urea electrooxidation reaction (UOR) and ethanol oxidation reaction (EOR). The FeCo2O4@Co3O4 catalysts required only 1.425 and 1.471 V to achieve a current density of 10 mA/cm2 in the UOR and EOR processes, respectively, which is much lower than the potential for the oxygen evolution reaction (OER). Furthermore, the current density remained stable at a fixed potential during a 20-hour long-term test in the urea solution.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Weiqing Zhang et al.
Summary: A high-performance catalyst made of single atomic Ce sites anchored on nitrogen-doped hollow carbon spheres has been developed. It can efficiently electrocatalyze the reduction of NO to NH3 in an acidic solution, achieving a maximal Faradaic efficiency of 91% and a yield rate of 1023 lg h-1 mgcat.-1. The catalyst outperforms Ce nanoclusters and shows good structural and electrochemical stability.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Hui Shen et al.
Summary: A two-step method was used to synthesize heterogeneous Ni-MoN nanosheet-assembled microspheres, which exhibited good activity in the oxygen evolution reaction, urea oxidation reaction, and hydrogen evolution reaction. This synthesis method has the potential to improve energy efficiency in hydrogen production and purify urea-containing wastewater.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Review
Thermodynamics
Adrian Chun Minh Loy et al.
Summary: The emergence of single atom sites as a frontier research area in catalysis has attracted extensive interest, especially for energy, environmental, and chemicals production. Single atom catalysts (SACs) have shown remarkable performance in various catalytic reactions, demonstrating high selectivity, long lifespan, stability, and high atomic metal utilization efficiency. This review provides insights on the development and achievements of SACs, including chronological progress, recent advances in synthesis, characterization techniques, applications, environmental and economic aspects, and current challenges and future prospects.
PROGRESS IN ENERGY AND COMBUSTION SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Quan Zhang et al.
Summary: As a clean energy carrier, hydrogen energy has become an integral part of the global clean energy strategy and a necessary pathway towards achieving global carbon neutrality. Water electrolysis, driven by renewable electricity, holds promise as a long-term hydrogen production method that can achieve net zero carbon emissions. High-entropy alloys (HEAs) offer numerous catalytic active sites due to their unique structural features, making them ideal candidates for hydrolysis catalysts. This review summarizes the mechanisms of water electrolysis, catalytic principles of HEAs in hydrolysis processes, and the latest research progress of HEAs as water electrolysis catalysts. It also provides insights into the challenges and potential of novel HEA design approaches in this field, focusing on the relationship between surface morphology and catalytic activity. The compositions and potential applications of HEAs in water electrolysis and other emerging fields are outlined.
SCIENCE CHINA-MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Tianran Wei et al.
Summary: In this study, a novel catalyst was reported, which can selectively catalyze HMF-to-FDCA oxidation at ambient conditions with high efficiency, yield rate, and conversion. The catalyst also has the capability to simultaneously produce H2 and FDCA.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Tianwei Wang et al.
Summary: We designed and fabricated Co nanoparticles confined in Mo/N co-doped polyhedral carbon frameworks derived from polyoxometalate-encapsulated metal-organic framework. The resulting Co-NP/MNCF showed comparable ORR performance with commercial Pt/C and exhibited excellent ORR stability and methanol tolerance. These appealing performances can be attributed to the porosity regulation and heteroatom doping of the metal-organic framework derived polyhedral carbon frameworks, which promote the exposure of active sites, optimization of electronic structure, and mass transfer of electrolyte/electron/ion.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Physical
Changrui Feng et al.
Summary: High-entropy (NiFeCoV)S2 porous nanosheets were fabricated on Ni foam through a hydrothermal reaction process for alkaline water/seawater electrolysis. The rough and porous nanosheets provided large active surface area and exposed more active sites, facilitating mass transfer and improving catalytic performance. The as-fabricated catalyst exhibited low overpotentials and excellent corrosion resistance, showing promise for efficient water/seawater electrolysis.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Energy & Fuels
Linzhe Zhao et al.
Summary: In this study, amorphous Co-Mn binary oxides loaded on porous carbon nanosheets were prepared and their composition, microstructure, and ORR/OER performance with different calcination temperatures were investigated. The amorphous CoMn2Ox supported on carbon nanosheets showed higher ORR/OER bifunctional electrochemical performance in terms of activity and stability. The rechargeable zinc-air battery with the amorphous CoMn(2)Ox on carbon nanosheets as air electrode achieved a peak power density of 89.6 mW cm(-2) and maintained stable operation for about 500 cycles at 10 mA cm-2. The ORR/OER bifunctional performance was closely related to the microstructure, oxidation states of Co/Mn species, and their corresponding proportions. Although there is still room for performance enhancement, this work provides insights into the development of high-performance and cheap ORR/OER bifunctional catalysts for rechargeable metal-air batteries by engineering the crystallinity of the metal oxides.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Inorganic & Nuclear
Hao Zhang et al.
Summary: Selective electrocatalytic oxidation of biomass-derived HMF to valuable FDCA using Mn-doped FePSe3 nanosheets is achieved under ambient conditions. The catalyst exhibits high faradaic efficiency, yield rate, and stability, surpassing the values for pure FePSe3. In addition, the catalyst shows excellent activity for alkaline hydrogen evolution. Furthermore, the catalyst is applied as both the anode and cathode in a single electrolyzer for simultaneous production of hydrogen and FDCA.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Talifhani Mushiana et al.
Summary: This study presents a simple strategy to synthesize high-performance HEM electrocatalysts through a sol-gel method. By adjusting the composition and adding substances such as borate and phosphate, catalysts with excellent catalytic activity, durability, and resistance to poisoning can be obtained. Furthermore, the fuel cell using this electrocatalyst can also produce formic acid efficiently.
Article
Chemistry, Inorganic & Nuclear
Honghui Chen et al.
Summary: In this study, CoSe2 nanocrystals embedded into a carbon framework grown on carbon cloth were successfully designed, demonstrating excellent performance in seawater splitting and promising applications in sustainable hydrogen production.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Hao Jiang et al.
Summary: In this study, a bifunctional electrocatalyst composed of individually dispersed Ni single atoms on N-doped carbon nanosheets (Ni SAs-NC) was synthesized and demonstrated to exhibit outstanding performance for both oxygen reduction reaction (ORR) and urea oxidation reaction (UOR). By coupling ORR with UOR of low thermodynamic potential, a urea-assisted rechargeable Zn-air battery (ZAB) with significantly decreased charging voltage and high urea elimination rate was achieved. The high bifunctional electrocatalytic activities of Ni SAs-NC resulted in a dramatically increased energy conversion efficiency of 71.8%, improving conventional ZABs by 17.1%. This successful implementation of Ni SAs-based urea-assisted ZABs with improved energy conversion efficiency may advance practical applications of ZAB technology.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
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
Linwei Jiang et al.
Summary: In this study, a highly efficient electrocatalyst with Mo particles anchored on the Ni-P matrix was fabricated and used for urea-assisted water electrolysis. The results showed that the electrocatalyst could maintain a stable current density at a lower voltage and achieve solar-driven water electrolysis.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Jingshu Wang et al.
Summary: In this study, a new type of Ru nanoparticle/mesoporous N-doped carbon (Ru/MPNC) composite was constructed as a high-performance bifunctional electrocatalyst for low-voltage water electrolysis and high hydrogen production rate, outperforming commercial Pt/C. The composite, with robust Ru-N metal-support interaction formed from specific precursor, allows the exposed Ru sites to lower the water dissociation energy barrier, significantly enhancing the activity of oxygen evolution reaction and hydrazine oxidation reaction.
Article
Engineering, Environmental
Tianqi Yu et al.
Summary: This study successfully prepared a self-supported sphereflower-like NiSe2-NiMoO4 heterostructure catalyst on nickel foam, showing excellent performance for urea-assisted water splitting, providing a new approach for designing efficient bifunctional catalysts.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Ge Meng et al.
Summary: In this study, Ru clusters supported on nitrogen-doped hollow carbon spheres exhibit remarkable activity and durability for hydrogen oxidation reaction (HOR) and H-2-O-2 fuel cell performance in alkaline media. Theoretical simulations indicate that Ru clusters provide thermodynamically favorable HOR kinetics and optimal hydrogen adsorption affinity.
CHEMICAL COMMUNICATIONS
(2022)
Review
Chemistry, Multidisciplinary
Mark A. Bajada et al.
Summary: The global warming crisis has led to environmentally cautious trends in chemistry, prompting a rethinking of synthesis methods and catalyst design. Single-atom catalysis has merged the benefits of homogeneous and heterogeneous catalysis, but its current applications are limited to the energy sector. Further sustainable development is needed.
CHEMICAL SOCIETY REVIEWS
(2022)
Article
Engineering, Environmental
Kyeongseok Min et al.
Summary: Oxygen-deficient Fe-doped Co3O4 polyhedral nanoparticles were successfully synthesized for efficient electrocatalytic oxygen evolution reaction through a self-templating strategy. The defect-rich nanoparticles demonstrated superior OER performance, with low overpotential, Tafel slope, and excellent long-term durability in alkaline conditions. This approach provides a new direction for designing advanced non-noble catalysts for energy storage and conversion applications.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Materials Science, Multidisciplinary
H. Liu et al.
MATERIALS TODAY ADVANCES
(2020)
Article
Chemistry, Physical
Xijun Liu et al.
Article
Multidisciplinary Sciences
Xijun Liu et al.
NATURE COMMUNICATIONS
(2018)
Article
Chemistry, Multidisciplinary
Lihan Zhang et al.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2017)