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Article
Chemistry, Multidisciplinary
Jin-Tao Ren et al.
Summary: To produce hydrogen through seawater splitting at higher current densities, active and robust catalysts are necessary to overcome challenges such as chloride corrosion, chlorine evolution, and catalyst poisoning. A core-shell heterostructure, composed of amorphous NiFe hydroxide layer-capped Ni3S2 nanopyramids grown directly on a nickel foam skeleton, was prepared to enhance oxygen evolution reaction (OER) performance. The catalyst exhibited an anodic current density of 1000 mA cm(-2) at an overpotential of 341 mV in 1.0 m KOH seawater, with improved chemical stability and corrosion resistance. Additionally, a nanopyramid-coated Ni3S2 with FeNi2P (NiS@FeNiP/NF) also showed enhanced hydrogen evolution reaction (HER) activity in the same seawater condition. The combination of NiS@FeNiP/NF and NiS@LDH/NF demonstrated potential for efficient hydrogen production from seawater.
Article
Chemistry, Multidisciplinary
Truong-Giang Vo et al.
Summary: This study demonstrates that Au@NiSx exhibits excellent efficiency and selectivity in the glycerol oxidation reaction, being able to efficiently produce the high-value intermediate TART and to moderately produce hydrogen gas. These findings contribute to the development of dual-functional electrocatalysts capable of producing high-value products at both the cathode and anode sides.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Chenghao Zou et al.
CELL REPORTS PHYSICAL SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Mingzhuang Liang et al.
Summary: A durable perovskite-based nanocomposite cathode for PCFCs is successfully prepared through manipulation of precursor composition and cation nonstoichiometry, exhibiting superior cathodic performance with a maximum peak power density of 1040 mW cm(-2) at 650 degrees C and excellent operational stability of 400 h at 550 degrees C.
ADVANCED MATERIALS
(2022)
Article
Geochemistry & Geophysics
Eleonora Carocci et al.
Summary: The study investigated tungsten (VI) speciation in hydrothermal solutions, revealing the stability of tungsten polymers at elevated temperatures and providing thermodynamic stability constants for quantitative predictions. The results suggest that tungsten polymerization can occur even at low concentrations under acidic conditions, indicating a need for revision of current geochemical models on tungsten transport and deposition in deep and hot geological fluids.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2022)
Article
Chemistry, Applied
Yihan Feng et al.
Summary: In this study, V-doped Pt/NiFe layered double hydroxide (LDH) catalyst was synthesized to enhance the bifunctional performance for water splitting, optimizing the kinetics of hydrogen adsorption and oxygen desorption processes. The V doping promotes electron transfer and charge redistribution, improving the catalytic activity of Pt clusters. This work provides insights for designing other bifunctional electrocatalysts for energy conversion and storage applications.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Feihong Wang et al.
Summary: Developing an economical, durable, and efficient electrode for large-scale electrochemical hydrogen production at high current densities is highly demanded. In this study, a self-supported electrocatalytic Pt-like WC porous electrode with open finger-like holes is produced through industrial processes. The electrode exhibits excellent durability and stability in both acidic and alkaline media, comparable to Pt electrode, attributed to its unique structure and electronic modulation at the WC-N/W interface.
Article
Chemistry, Multidisciplinary
Meng Yan et al.
Summary: Developing materials that can withstand extreme temperatures, provide thermal insulation, and are not easily ablated is crucial for the thermal protection of aerospace vehicles. Carbon aerogels have excellent thermal stability and insulation properties, making them attractive candidates. However, their poor anti-oxidative performance and difficulty in producing an anti-oxidative refractory coating, as well as their brittleness and low mechanical strength, limit their practical use. This study reports a novel carbon fiber-reinforced carbon-ceramic composite that exhibits excellent ablation resistance, thermal insulation, thermostability, and load-carrying capacity. Compared to conventional porous non-ablative and thermal insulating materials, the newly developed composite has significantly improved performance. This work presents a promising approach to enhance the ablation resistance property of nano-porous carbon monoliths and has implications for ultra-high temperature thermal protection in aerospace.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Ziwei Guo et al.
Summary: In this study, a novel method was proposed to enhance the corrosion resistance of plasma electrolytic oxidation (PEO) coatings by utilizing graphene oxide (GO) and plasma discharge. GO effectively reduced the overall porosity and altered the pore shape, resulting in coatings with ultra-low porosity and high aspect ratio, which led to superior corrosion resistance.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Inorganic & Nuclear
Anubha Rajput et al.
Summary: In this study, NiMoO4 nanorods and NiWO4 nanoparticles were prepared and deposited on a nickel foam for the electrocatalytic oxygen evolution reaction (OER). The results showed that NiMoO4 transformed into NiO(OH)(ED) during usage, while NiWO4 remained stable. Further investigation revealed that the stronger ionic character of the Ni-O-Mo bond in NiMoO4 compared to the Ni-O-W bond in NiWO4 caused the transformation. The in-situ-prepared NiO(OH)(ED) exhibited excellent performance in the OER.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Zi-You Yu et al.
Summary: This study developed a template-assisted strategy for the synthesis of tube-like nanostructured perovskite oxides, and successfully prepared 13 catalysts with high surface areas. By systematically examining these catalysts, it was found that the OER activity in neutral solutions exhibits a volcano shape as a function of the covalency of metal-oxygen bonds. The Sm-doped LaCoO3 catalyst designed in this study showed the highest OER activity in neutral electrolytes.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Multidisciplinary Sciences
Huachuan Sun et al.
Summary: This study reports a multifunctional electrocatalyst, Rh/NiV-LDH, which integrates NiV-LDH and Rh single-atom catalyst for efficient urea electrolysis and hydrogen fuel generation. The electrocatalyst demonstrates excellent activity in both HER and urea oxidation reactions, indicating its potential for wastewater purification and energy conversion. The research provides important insights and references for multifunctional SAC design.
Article
Multidisciplinary Sciences
Ye Qiu et al.
Summary: Most economically important tungsten (W) deposits are formed through magmatic-hydrothermal processes. This study used an in situ Raman spectroscopic approach to investigate the species and partitioning of W in granite melts and coexisting fluids. The results revealed that WO42 and HWO4 are the dominant W species and show strong enrichment in the fluid. The study suggests that fluid exsolution is an important mechanism for generating W-rich oreforming fluids.
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, Physical
Yihan Feng et al.
Summary: This study reports a method of preparing highly active electrocatalysts through nitridation. The electrocatalyst exhibits improved efficiency for hydrogen evolution reaction by modifying the chemical environment and electronic structure. The experimental results show that the electrocatalyst has low overpotential and high catalytic activity in alkaline solution, outperforming other noble-metal electrocatalysts previously reported.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Multidisciplinary
Yuxuan Lu et al.
Summary: The adsorption behavior of HMF on Co3O4 has been studied, and the adsorption energy can be tuned by decorating with single-atom Ir, enhancing the overall conversion efficiency of HMF on electrocatalysts.
ADVANCED MATERIALS
(2021)
Article
Materials Science, Ceramics
Ziyuan Zhao et al.
Summary: The tungsten carbide (WC) coatings prepared by interstitial carburization method demonstrated high hardness, excellent scratch resistance, and wear resistance. The coatings exhibited a gradient microstructure with columnar WC grains, reaching close to 100% volume fraction of carbide phases. The coatings also showed resistance to delamination and high adhesion strength, making them suitable for applications requiring wear resistance.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Sahar Zinatloo-Ajabshir et al.
Summary: This study introduces a controllable sonochemical approach for synthesizing photocatalysts, focusing on the nanostructured MnWO4 produced with a green capping agent, phenylalanine. It was found that different factors such as precursor quantities, sonication times, and capping agent types could impact the shape, photocatalytic yield, and scale of MnWO4 samples. The optimal MnWO4 sample demonstrated excellent photocatalytic performance in removing organic contaminants from water under visible radiation and showed good stability for multiple cycles, highlighting its potential as an efficient photocatalytic substance for environmental remediation.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Mechanical
Weiwei Zhang et al.
Summary: In this study, the effects of ZrO2, TiN, BN, and Si3N4 nanoparticles on the properties of Ni-W composite coating were compared. Results showed that the incorporation of nanoparticles enhanced the properties and refined the grains of the composite coating. The nanocomposite coating exhibited improved corrosion resistance and anti-wear capability, making it a promising option for protective coatings in harsh conditions.
SURFACE TOPOGRAPHY-METROLOGY AND PROPERTIES
(2021)
Article
Chemistry, Physical
Qunlei Wen et al.
Summary: Versatile catalyst system composed of dispersed NiFe hydroxide nanoparticles and ultrathin NiS nanosheets exhibits remarkable oxygen evolution reaction (OER) activity at high current density under industrial conditions. Theoretical calculations demonstrate the cooperative regulation of mass transport and electronic structure, leading to favorable OER kinetics and stable cell performance in water splitting electrolyzer.
ADVANCED ENERGY MATERIALS
(2021)
Article
Energy & Fuels
Shi-Kui Geng et al.
Summary: Researchers have found that the nickel ferrocyanide catalyst can drive the urea oxidation reaction with higher activity and stability. Moreover, the catalyst appears to operate via a different pathway, which facilitates the efficiency of ammonia production.
Article
Chemistry, Multidisciplinary
Bo Zhou et al.
Summary: In this study, platinum modification of nickel hydroxide improved the current density of the 5-hydroxymethylfurfural oxidation reaction (HMFOR) and optimized the formation of active Ni(OH)O species. Platinum also reduced the adsorption energy of HMF, enhancing the catalytic process.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Marilena Moschogiannaki et al.
JOURNAL OF MATERIOMICS
(2020)
Article
Chemistry, Multidisciplinary
Zhaohui Xiao et al.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2020)
Article
Multidisciplinary Sciences
Jie Dai et al.
NATURE COMMUNICATIONS
(2020)
Article
Materials Science, Ceramics
Baosong Li et al.
CERAMICS INTERNATIONAL
(2019)
Article
Chemistry, Physical
Ying Wang et al.
Article
Chemistry, Physical
Marc Ledendecker et al.
ADVANCED ENERGY MATERIALS
(2017)
Article
Materials Science, Ceramics
Wei Liu et al.
CERAMICS INTERNATIONAL
(2017)
Article
Chemistry, Physical
Jae-Il Jung et al.
ADVANCED ENERGY MATERIALS
(2015)
Article
Chemistry, Physical
Xiaojiang Yao et al.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2014)
Article
Engineering, Industrial
L. A. Dobrzanski et al.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2006)
Article
Instruments & Instrumentation
B Ravel et al.
JOURNAL OF SYNCHROTRON RADIATION
(2005)
