Related references
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Article
Chemistry, Physical
Xinran Li et al.
Summary: Reasonably engineering the hierarchical architectures and the electronic structures of Cu-based materials can improve their performance as oxygen evolution reaction (OER) electrocatalysts. In this study, octahedral HKUST-1 was grown on Cu nanorod supported N-doped carbon microplates, while an active layer of Cu(OH)(2) formed on the surface of the original conductive Cu nanorods. The octahedral HKUST-1 greatly improved porosity and increased available active sites, leading to enhanced OER performance.
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Chemistry, Physical
Ganggang Li et al.
Summary: In this study, Co3O4 materials with different morphologies were fabricated and the effect of water on their catalytic activity was investigated. The results showed that spherical Co3O4 displayed the best catalytic activity under dry conditions, while rod-like Co3O4 exhibited the best water resistance under humid conditions. Correlative characterizations and DFT calculations were used to reveal the mechanism behind water's effect.
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Chemistry, Multidisciplinary
Bo Li et al.
Summary: In this study, directional charge transfer channels were constructed using carbon dots/carbon nitride (CCN) nanotubes and FeOOH/FeCo layered double hydroxide (FFC) nanosheets, which significantly improved the photo-assisted overall water splitting performance. Experimental investigations and DFT calculations demonstrated that the interfacial C-O-Fe bonds between CCN and FFC served as charge transfer channels, facilitating the migration of photoexcited carriers between their surfaces. The in situ oxidized Fe/Co species triggered lattice oxygen activation, leading to the construction of the Fe-Co dual-site as the catalytic center and effectively lowering the energy barrier for water oxidation. As a result, the CCN@FFC electrode exhibited multiple functionalities in photoelectrocatalysis, achieving low overpotentials for photo-assisted hydrogen evolution, oxygen evolution, and overall water splitting.
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Jin Liu et al.
Summary: Manipulating electronic structure and defects is crucial for the functionalities of bimetallic sulfide catalysts. The vulcanization strategy used in this study resulted in defects-rich NiCo2S4 needles anchored on the surface of hollow carbon spheres (NiCo2S4/HCS). The NiCo2S4/HCS catalyst exhibited excellent activity and stability for oxygen reduction/evolution reactions and showed potential for application in zinc-air batteries.
ADVANCED FUNCTIONAL MATERIALS
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Chemistry, Physical
Xinyuan Liao et al.
Summary: This study presents an efficient strategy to improve the electrocatalytic performance of the oxygen evolution reaction (OER) by constructing a Mott-Schottky heterojunction via a Cu layer. The Co(CO3)(0.5)OH/Cu/NFs sample with a Mott-Schottky structure exhibits significantly enhanced OER performance, with a low overpotential and Tafel slope. The Mott-Schottky structure of Co(CO3)(0.5)OH/Cu improves the intrinsic activity of the sample and enhances the charge transport speed, while the Cu layer and the dense Co(CO3)(0.5)OH and NF substrate in the sandwich structure contribute to the stability of the catalyst.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
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Xiaomin Cheng et al.
Summary: In this study, three different types of CoOx/CeO2 catalysts were prepared and their catalytic activity in NO oxidation was compared. It was found that the {110} facet of CeO2 provided the best anchoring and stabilizing effect for Co species. The catalyst with CeO2 nanorods as support exhibited the highest NO oxidation activity, attributed to the active {110} facet and strong bimetallic interface interaction, which resulted in more structural defects, abundant oxygen vacancies, excellent reducibility, and strong adsorption capacity. The bimetallic interface interaction also promoted the formation of nitrate species and suppressed the generation of sulfate, leading to higher catalytic activity and stability.
JOURNAL OF HAZARDOUS MATERIALS
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Chemistry, Physical
Xinran Li et al.
Summary: Reasonably engineering the hierarchical architectures and the electronic structures can improve the performance of Cu-based oxygen evolution reaction (OER) catalysts. In this work, octahedral HKUST-1 serves as a spacer between N-doped carbon microplates supported by Cu nanorods, greatly improving the porosity and increasing the available active sites, facilitating the mass transport and electron transfer, thus resulting in greatly enhanced OER performance.
Article
Chemistry, Multidisciplinary
Yang Wang et al.
Summary: A highly active and durable single-atom W-doped electrocatalyst for the hydrogen and oxygen evolution reactions has been successfully developed, exhibiting excellent catalytic activity and long-term stability, surpassing commercial precious-metal catalysts and previously reported transition-metal-based compounds.
ADVANCED MATERIALS
(2022)
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Ying Wang et al.
Summary: This study reports a highly efficient electrocatalyst for water splitting, which is fabricated using a controllable grafted-growth strategy to form a cMOF/LDH hetero-nanotree array catalyst coupled with monodispersed ruthenium (Ru) sites. The optimized catalyst shows excellent electrochemical water-splitting properties in alkaline media, outperforming most reported MOF-based catalysts.
ADVANCED MATERIALS
(2022)
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Chemistry, Physical
Weining Zhang et al.
Summary: Research shows that FLPs with shorter acid-base distance are more efficient in CO2 activation. The combination effects between facet junction separating charges and FLPs activating molecules can accelerate CO2 reduction.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Yuan-Yuan Feng et al.
Summary: The study presents a highly efficient Cu-doped RuO2 OER electrocatalyst, Cu-RuO2-300, which shows exceptional activity and stability for OER in acidic media. The catalyst exhibits significantly lower overpotential and faster OER kinetics compared to benchmark RuO2 and most noble metal/non-noble metal catalysts reported in literature. This work provides guidance for the design and preparation of highly efficient and stable noble metal-based OER catalysts in acidic media.
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(2022)
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Bing Zhang et al.
Summary: This study successfully prepared an anemone-like CoP@CoOOH core-shell heterojunction catalyst using oxygen-vacancy and core-shell heterojunction engineering strategy, which exhibited excellent HER and OER activities in both neutral and alkaline media. The core-shell heterojunction accelerated the catalytic kinetics, while oxygen-vacancies reduced the kinetic barrier, ultimately enhancing the OER performance.
Article
Multidisciplinary Sciences
Woong Hee Lee et al.
Summary: The phase and spin state of Co-based catalysts significantly impact the catalytic activity for oxygen evolution reaction. This study demonstrates a simple reconstruction strategy to fabricate electrodes with specific phase and spin state, which is proven to be effective through computational calculations and experimental studies.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Ying Xin et al.
Summary: This study investigates the effect of different exposed crystal facets on the catalytic performance of Mn2O3 for NO oxidation by constructing rod- and particle-like Mn2O3 nanocrystals. The results show that different crystal structures lead to diverse catalytic behaviors of Mn2O3, especially in terms of poisoning resistance. Additionally, this work provides valuable design principles for future studies to improve other metal oxide catalysts.
Article
Chemistry, Multidisciplinary
Songsong Li et al.
Summary: This study reports the synthesis of high efficiency electrocatalysts based on S-doped NiFeP and improves the reaction performance by tuning the electronic structure. The research provides a new strategy for designing highly active non-noble metal catalysts.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
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Jinxiu Zhao et al.
Summary: In this study, chromium doped cobalt carbonate hydroxide nanowire array on Ni foam was synthesized for enhancing the activity and stability of oxygen evolution reaction (OER). The optimal doping of chromium exhibited low overpotential and small Tafel slope, and maintained good electrocatalytic performance after cyclic voltammetry.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
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Chemistry, Multidisciplinary
Yu-Rim Hong et al.
Summary: This study addresses the inefficient interfacial contact effect in Pt-catalyzed alkaline hydrogen evolution reaction (HER) by producing atomically flat two-dimensional Pt nanodendrites (2D-PtNDs) and realizing a maximized and firmly bound lateral heterointerface with NiFe-layered double hydroxide (LDH). This work demonstrates the importance of shape and facet of Pt in creating heterointerfaces that provide catalytic synergy for efficient hydrogen production.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
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Chemistry, Multidisciplinary
Zemin Sun et al.
Summary: This study presents a novel magnetic site spin-splitting strategy to optimize the electronic structure and spin states of Fe-III sites using the Jahn-Teller effect of Cu2+ for enhanced oxygen evolution reaction (OER) activity. The Cu-1-Ni6Fe2-LDH catalyst exhibits excellent OER performance under magnetic field assistance, providing new principles for high-performance catalyst development and understanding of spintronic catalytic mechanisms.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
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Fengting Luo et al.
Summary: This study presents a self-supported dual-metal doped CoP3 nanowire arrays catalyst for alkaline HER. The optimized catalyst exhibits superior electrocatalytic activity, outperforming commercial Pt/C catalysts.
APPLIED PHYSICS LETTERS
(2022)
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Energy & Fuels
Felix T. Haase et al.
Summary: This study utilizes operando X-ray absorption spectroscopy to track the catalytic activity and structural changes of CoOx(OH)(y) nanoparticles during the oxygen evolution reaction (OER). The research reveals the superior OER activity of sub-5 nm particles and a size-dependent contraction of Co-O bonds during OER. The study also finds that the accumulation of oxidative charge triggers electron redistribution and the formation of oxyl radicals as the predominant surface-terminating motif.
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Lingxing Zan et al.
Summary: This study demonstrates the synthesis of well-defined structured CoNi-layered double hydroxides (LHDs) using a solvent-induced strategy for highly efficient water electrolysis and provides a detailed mechanism for enhancing oxygen evolution reaction (OER) catalytic activity. The results show the importance of both the synergistic catalytic effect of bimetallic hydroxides and the crystal-facet effect in achieving high catalytic activity.
INORGANIC CHEMISTRY FRONTIERS
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Jinghua Liu et al.
Summary: In this study, a partial phase conversion strategy was employed to enhance the electrocatalytic performance of cobalt/nickel carbonate hydroxide nanosheet arrays. The optimized sample exhibited remarkable activity and stability in a KOH solution. The presence of iron impurity in the electrolyte played a crucial role in achieving high OER performance, while the heterostructure caused by the partial phase conversion further improved conductivity, stability, and active site availability.
INORGANIC CHEMISTRY FRONTIERS
(2022)
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Chemistry, Physical
Yao Zhang et al.
Summary: This study presents a facile solvothermal strategy to fabricate a binder-free electrode of Fe-S-NiMoO4/MoO3 with nanorods array, which demonstrates that Fe-doping can improve the conductivity and modulate the crystal plane of MoO3. The electrode can stably yield a current density of 500 mA cm-2 at an overpotential of 271 mV under 50 degrees Celsius, meeting the requirements of industrial water electrolysis.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Engineering, Environmental
Chuqiang Huang et al.
Summary: A unique self-template strategy was developed to synthesize Fe-incorporated CoNi (oxy)hydroxide nanosheet-assembled nanorod arrays, which exhibited improved OER activity due to the reorganized hierarchical structure induced by Fe incorporation and modified electronic conductivity.
CHEMICAL ENGINEERING JOURNAL
(2021)
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Engineering, Environmental
Xueyuan Wang et al.
Summary: Structural manipulation of electrocatalysts by doping high-valence Ta into NiFe layered double hydroxide enhances OER activity through lattice expansion and electronic structure modification. The optimized Ta-NiFe LDH exhibits superior OER performance with lower overpotential and smaller Tafel slope. This work provides a theoretical basis for enhancing OER activity by doping LDH with high-valence foreign metals.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Applied
Yunqi Zhang et al.
Summary: LDHs have been identified as promising electrocatalysts for OER due to their high intrinsic activity, excellent stability, and low cost. The active edge facet of LDHs plays a crucial role in improving OER activity, with higher edge facet area ratio showing superior performance. Density functional theory calculation indicates that the edge facet exhibits higher OER activity compared to the basal plane facet.
JOURNAL OF ENERGY CHEMISTRY
(2021)
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Lei Zhou et al.
Summary: This study demonstrates a strategy to optimize the oxygen evolution reaction activity of LDHs by introducing transition and main group metal atoms, which can enhance the intrinsic activity and kinetics of LDHs. Experimental and theoretical results show that suitable dopants can lower the activation energy barrier and promote electron transfers, providing insights for the rational design of high-performing OER electrocatalysts.
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(2021)
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Haohao Bi et al.
Summary: In this study, an in situ supersaturation-triggered growth of vertically aligned 2D CoFeP nanosheet/1D Fe-CoP nanowire (2D/1D CoFeP NS@Fe-CoP NW) heterostructures with open hierarchical architecture was reported, showing enhanced charge transfer and catalytic performance. The heterostructures exhibit superb electrocatalytic activity for hydrogen evolution reaction, oxygen evolution reaction, and overall water splitting, making them efficient non-noble metal catalysts.
APPLIED PHYSICS LETTERS
(2021)
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Chemistry, Multidisciplinary
Bo Li et al.
Summary: This study presents a high-throughput one-photon excitation pathway by constructing carbon dots/porous carbon nitride nanovesicles heterostructures for photocatalytic hydrogen evolution, achieving significantly improved performance. The enhanced performance is primarily attributed to the high-throughput and one-photon excitation pathway, leading to effective spatial separation of electrons and holes.
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(2021)
Article
Chemistry, Physical
Hui Su et al.
Summary: Novel bimetallic sulfide electrocatalysts with excellent HER and OER activity have been synthesized, outperforming most reported bifunctional metal sulfides. This is attributed to the introduction of Cu cation promoting the formation of high-valent Ni/Co sites, which enhances the intrinsic catalytic activity by modulating the d-band center of Co and reducing the adsorption energy of intermediates.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Physics, Applied
Xueying Yang et al.
Summary: An ultrathin VOx-doped NiFe alloy layer was electrodeposited on NiCoP supported by TM to achieve a highly active and low-cost bifunctional electrocatalyst for overall water splitting. The VOx@NiFe/NiCoP/TM electrode exhibits superior electrocatalytic activity for water electrolysis and shows robustness and outstanding durability in alkaline medium. Serving as both anode and cathode electrocatalysts in a two-electrode water electrolytic cell, the bifunctional electrodes only require low potentials with excellent durability.
APPLIED PHYSICS LETTERS
(2021)
Article
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Xinli Yi et al.
Summary: The study presents a method to prepare efficient water splitting catalysts, achieving the target of driving water electrolysis at low voltage. Integrated with a commercial monocrystalline silicon cell, the solar-driven hydrogen production efficiency reaches 15.1% with stable performance, demonstrating the potential for large-scale industrial hydrogen production.
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Tianze Wu et al.
Summary: This study introduces a strategy of spin pinning to increase the spin alignment in paramagnetic oxyhydroxides, aiming to enhance the OER activity, and confirms the spin effect in the rate-limiting OER step.
NATURE COMMUNICATIONS
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Yubing Yan
Summary: This study presents needle-like cobalt carbonate hydroxide hydrate nanoarrays with high porosity and unique structure, which can reduce the overpotential for the oxygen evolution reaction and exhibit excellent stability.
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