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Article
Chemistry, Multidisciplinary
Jiameng Liu et al.
Summary: Researchers constructed a defect-rich 2D p-n heterojunction, CoxNi3-x(HITP)(2)/BNSs-P, using a semiconductive metal-organic framework (MOF) and boron nanosheets (BNSs) by in situ solution plasma modification. The heterojunction acts as an effective catalyst for the electrocatalytic nitrogen reduction reaction (eNRR) under ambient conditions. The study establishes an efficient strategy for the rational design of advanced eNRR catalysts for ammonia synthesis under ambient conditions.
Article
Energy & Fuels
Jiaxin Guo et al.
Summary: Researchers have developed a new method to directly electrolyze seawater for hydrogen production. By introducing a hard Lewis acid layer on the catalyst surface, they were able to generate local alkalinity, improving the efficiency of water splitting.
Article
Chemistry, Multidisciplinary
Yanyan Song et al.
Summary: Seawater is preferred for mass production of hydrogen fuel by electrochemical water splitting due to its abundant reserves on Earth, but current seawater electrolysis technology is hindered by low selectivity and poor stability of oxygen evolution reaction (OER). In this study, vein-like Cr-doping CoxP is designed as a highly-efficient OER electrocatalyst for direct seawater electrolysis, achieving high current densities and stability. The electronic structure regulation induced by Cr doping alleviates the work function of CoxP, accelerating electron transfer and lowering energy barriers for OER and hydrogen evolution reaction (HER).
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Mengzhen Xi et al.
Summary: In conventional luminol electrochemiluminescence (ECL) systems, the self-decomposition of hydrogen peroxide and limited solubility of oxygen in water restrict the detection accuracy and luminous efficiency. Inspired by the ROS-mediated ECL mechanism, cobalt-iron layered double hydroxide is used for efficient activation of water to generate ROS and enhance luminol emission. The detection of alkaline phosphatase has been successfully achieved with impressive sensitivity and reproducibility for practical sample analysis.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Yaming Hao et al.
Summary: In this study, an electrode/electrolyte synergy strategy was developed to enhance both proton and electron transfers, resulting in efficient neutral water oxidation.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Zihong Wang et al.
Summary: Electrocatalytic CO2 reduction is a promising route for carbon neutrality. A catalyst-electrolyte interface was designed to improve ethylene electrosynthesis from CO2 in a neutral medium.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Rashid Mehmood et al.
Summary: It remains uncertain whether Fe3+ or Fe4+ intermediates are highly active for efficient OER. In this study, a Fe, V-based bimetallic composite nanosheet was prepared, using V as a promoter and one-dimensional conductive nickel phosphide (NP) as a support. It was found that the highly active Fe4+ species were detected only during the OER process of the FeVOx / NP nanocomposite, confirming their role in efficient OER.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Je Min Yu et al.
Summary: Highly efficient electrocatalysts for the oxygen evolution reaction (OER) in neutral electrolytes are crucial for practical water splitting technologies. However, there is a lack of good neutral OER electrocatalysts due to poor stability and slow kinetics at neutral pH. In this study, Ir species nanocluster-anchored, Co/Fe-layered double hydroxide (LDH) nanostructures were developed, which showed enhanced OER kinetics at neutral pH. The optimized OER electrocatalyst demonstrated a low overpotential and high performance when integrated with an organic semiconductor-based photoanode.
Article
Chemistry, Multidisciplinary
Liming Deng et al.
Summary: Efficient and durable cobalt-ruthenium oxide nano-heterostructures (CoOx/RuOx-CC) are successfully synthesized on carbon cloth using a rapid solution combustion strategy for acidic oxygen evolution reaction (OER). The unique structure and electron transfer properties of CoOx/RuOx-CC enhance the OER kinetics, improve the catalyst stability, and exhibit an ultralow overpotential of 180 mV at 10 mA cm(-2) for OER. The mechanism analysis reveals that the strong catalyst-support interaction optimizes the binding energy of OER intermediates by redistributing the electronic structure of Ru-O bond.
Article
Multidisciplinary Sciences
Jie Yin et al.
Summary: The FeN/Fe3N interface with Fe-N-4 and Fe-N-2 coordination sites is revealed to enhance the electrochemical reduction of CO2 to CO.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Deshuang Yu et al.
Summary: This study presents a scalable production method for inexpensive, efficient, and robust catalysts for oxygen evolution reaction (OER) by in situ growing a series of metal oxides coupled with Fe2O3 on iron foam via an ultrafast combustion approach. The optimized Ni(OH)2/Fe2O3 catalyst can deliver a high current density of 1000 mA cm-2 at the low overpotential of 271 mV in 1.0 M KOH for up to 1500 h.
Article
Chemistry, Multidisciplinary
Ning Wang et al.
Summary: Direct electrolysis of pH-neutral seawater to generate hydrogen faces an anodic competition issue between the chlorine evolution and the oxygen evolution reaction (OER), resulting in low current density and limited operating stability. In this study, a proton-adsorption-promoting strategy has been proposed to increase the OER rate, allowing for enhanced and stable neutral seawater splitting. Palladium-doped cobalt oxide (Co3-xPdxO4) catalysts exhibit the best performance with an OER overpotential of 370 mV at 10 mA cm(-2) in pH-neutral simulated seawater, outperforming Co3O4 by 70 mV. Co3-xPdxO4 catalysts also demonstrate long-term stability in neutral seawater, with 450 hours at 200 mA cm(-2) and 20 hours at 1 A cm(-2). Experimental and theoretical analyses suggest that the inclusion of SPA cations accelerates the rate-determining water dissociation step in the neutral OER pathway, while ruling out additional OER sites as a main factor.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yang Wang et al.
Summary: It is essential to develop inexpensive and efficient transition metal based electrocatalysts for neutral water splitting. This work successfully synthesized amorphous Mo-doped NiS0.5Se0.5 nanosheets@crystalline NiS0.5Se0.5 nanorods through a simple one-step strategy. The Am-Mo-NiS0.5Se0.5 catalyst showed low overpotentials for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), and exhibited excellent stability for at least 300 hours. Theoretical calculations revealed that the defect-rich amorphous structure of Am-Mo-NiS0.5Se0.5 enhanced H2O binding energy and optimized the energy barriers for H adsorption/desorption and OER determining step.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Chao Feng et al.
Summary: In this study, the active center of NiFe-based catalysts for oxygen evolution reaction (OER) was identified as Fe through the detection of highly-oxidized Fe-VI intermediates leached into the electrolyte. Furthermore, the incorporation of Co into NiFe-based catalyst was found to enhance the formation of Fe-VI active species and improve the OER activity of the catalyst. These findings provide insights into the mechanisms for sustainable generation of Fe-VI active species in NiFe-based catalysts and lay the foundation for the design of more efficient and stable OER catalysts.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Yixin Hao et al.
Summary: An efficient catalyst comprised of highly dispersed FeNi oxide heterojunctions anchored on nickel foam is synthesized using an ultrafast solution combustion strategy. This catalyst exhibits excellent stability and activity at large current densities for anodic organic upgrading, and achieves high faradaic efficiency in methanol electrooxidation.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Review
Electrochemistry
Meng Chen et al.
Summary: This critical review discusses the prospects of metal-oxide electrocatalysts for seawater splitting, focusing on their chemical properties, OER selectivity, anti-chlorine-corrosion performance, and reaction mechanisms. The review highlights metal oxides that operate at high current densities, near industrial application levels, based on special catalyst design strategies.
Review
Chemistry, Multidisciplinary
Nan Jiang et al.
Summary: This review discusses the ongoing development of OER electrocatalysts under near pH-neutral CO2-saturated solutions, emphasizing the need for high-performance and cost-effective catalysts suitable for CO2RR conditions. It highlights the importance of exploring new opportunities in this field for addressing the challenges posed by the sluggish kinetics of OER in implementing renewable approaches for energy production and climate change mitigation.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Lingling Zhai et al.
Summary: The correlation between work function and built-in electric field (BEF) is crucial for understanding the intrinsic reaction mechanism of metal-support electro-catalysts. In this study, a Pt@CoOx electrocatalyst with a large work function difference and strong BEF was presented, showing outstanding hydrogen evolution activity in a neutral medium. The experimental and theoretical results confirmed the interfacial charge redistribution induced by the strong BEF, which optimized the adsorption energy of hydrogen and hydroxide. This work provides new insights into the neutral hydrogen evolution mechanism and proposes new design principles for efficient electrocatalysts for hydrogen production in neutral medium.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Dazhong Zhong et al.
Summary: This paper introduces partially oxidized CoFe-OH with enhanced covalency of M-O bonds as an efficient electrocatalyst for OER in neutral electrolyte. The enhanced M-O covalency shifts the OER mechanism to lattice oxygen oxidation mechanism in PO-CoFe-OH, promoting rate-limiting deprotonation and providing superior OER performance. It only requires overpotentials of 186 and 365 mV to achieve current density densities of 1 and 10 mA.cm(-2) in 0.1 M KHCO3 aqueous solution (pH = 8.3), showing a new approach for designing efficient catalysts for water oxidation in mild conditions.
Article
Chemistry, Multidisciplinary
Xiaobo Zheng et al.
Summary: This study presents a facile and universal strategy for the synthesis of defect-abundant 2D materials with unique electronic structures using mechanical shear-assisted exfoliation. The fabricated defect-rich LiCoO2 nanosheets exhibit accelerated oxygen evolution kinetics and reduced energy barrier. Importantly, this method can be applied to the fabrication of other ultrathin defect-rich 2D materials.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Xiaobo Zheng et al.
Summary: The electronic properties of a Ru/LiCoO2 single-atom site catalyst can be engineered by coordinating a Ru cation, resulting in enhanced electrical conductivity and optimal oxygen adsorption energies. The catalyst exhibits superior activity, stability, kinetics, and durability in oxygen evolution reactions and zinc-air batteries.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Feng Hu et al.
Summary: This study reports a simple method to synthesize efficient bifunctional electrocatalysts that exhibit high catalytic activity and stability in alkaline oxygen/hydrogen evolution reactions. The catalysts have been designed and fabricated with an optimized structure and nanoporous morphology, resulting in low overpotential and high current density.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Xuerong Zheng et al.
Summary: This study reveals the importance of chalcogens in transition metal chalcogenides for the oxygen evolution reaction (OER) and proposes a sulfurizing method to synthesize sulfur-doped NiCo-(oxy)hydroxysulfides (NCOSH) nanosheets as efficient electrocatalysts. The sulfur dopants enhance the oxidation activity and stability of high-valent transition metals, resulting in superior bifunctional activities and durability for oxygen electrocatalytic reactions. The NCOSH nanosheets also exhibit excellent performance as air cathodes in rechargeable solid state Zn-air batteries.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Nan Zhang et al.
Summary: In this study, NiO/NiS2 and Fe-NiO/NiS2 catalyst models were constructed to investigate the effect of Fe doping. Fe-NiO/NiS2 exhibited a low overpotential, attributed to the accumulation of hydroxyl groups on the surface of materials after Fe doping, promoting the formation of highly active NiOOH. Furthermore, Fe bonded with S in the bulk was found to alleviate the oxidation corrosion of Ni-S bonds, providing long-term durability to Fe-NiO/NiS2.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Qiuling Ma et al.
Summary: In this study, a WO3 network photoelectrode with high photocurrent density and reaction rate was reported. The photoelectrode exhibited a Schottky junction formed at the heterophase interface, which facilitated charge transfer and achieved complete degradation and mineralization of bisphenol A in wastewater treatment.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Multidisciplinary
Gaurav Bahuguna et al.
Summary: Efficient neutral water splitting can be achieved through the combination of electronic structure engineering and surface morphology tuning of novel catalysts. This study demonstrates the synthesis of NiSx catalysts with enhanced performance for neutral water splitting, surpassing state-of-the-art materials. The catalyst exhibits an exceptionally low cell voltage and performs well in both oxygen and hydrogen evolution reactions.
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
Chemistry, Multidisciplinary
Tao Liu et al.
Summary: The strong synergy between borate and fluoride anions for water oxidation in neutral conditions was discovered in this study. The hierarchical arrangement of the anions at the electrode-electrolyte interface played a crucial role in this synergy, allowing for a significant enhancement of the water oxidation current. The use of the synergized electrolyte resulted in a low-cost and facilely synthesized Co(OH)(2) electrode with outstanding performance and durability.
Article
Chemistry, Multidisciplinary
Peng Zhou et al.
Summary: The CuO-PdO heterogeneous interface was successfully constructed, resulting in an advanced onset-potential and higher current density for the electrocatalytic oxidation of 5-hydroxymethylfurfural (HMF). The introduction of PdO enhanced the adsorption capacity of the organic molecule and promoted the adsorption and activation of OH- species at the CuO-PdO interface.
ADVANCED MATERIALS
(2022)
Article
Multidisciplinary Sciences
Luqi Wang et al.
Summary: Researchers propose a rapid complete reconfiguration strategy for enhancing catalyst activity by coating CoC2O4 heterostructures with MXene nanosheets. The rapid reconfiguration creates new catalytic species Co(OH)(2), which facilitates fast reaction kinetics.
NATURE COMMUNICATIONS
(2022)
Article
Multidisciplinary Sciences
Kun Du et al.
Summary: Designing catalytic materials with enhanced stability and activity is crucial for sustainable electrochemical energy technologies. The authors of this study overcome the stability and activity limits of RuO2 by constructing a RuO2/CoOx interface in neutral and alkaline environments.
NATURE COMMUNICATIONS
(2022)
Article
Electrochemistry
Hui Su et al.
Summary: By modulating the electronic structure of Pt, a Pt-based catalyst with high OER activity under acidic conditions and large current density was developed. In situ experiments showed the production of a key (*O)-Pt-1-C2N2 intermediate, favoring the dissociation of H2O and preventing over-oxidation of active sites.
Article
Electrochemistry
Wang Wang et al.
Summary: In this study, a newly proposed kinetic model was used to investigate the promotion mechanism of the oxygen evolution reaction (OER) for Co3O4 interfaced with nickel hydroxides (NiOxHy). The results revealed that depending on the electrode potential, the OER kinetics at the designed interface between Co3O4 and NiOxHy are boosted in different ways, leading to a lower onset potential and a low Tafel slope.
Article
Chemistry, Multidisciplinary
Lichen Bai et al.
Summary: The study experimentally validated two different mechanisms for oxygen evolution reaction catalysts: one is a bifunctional mechanism, and the other is a conventional four-step proton-coupled electron transfer mechanism.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Zhirong Zhang et al.
Summary: A single-atom iron catalyst with in-situ generated Fe4+ centers has been shown to have high activity towards the Oxygen Evolution Reaction (OER), requiring a low overpotential and exhibiting comparable performance to transitional-metal based catalysts. The strong interaction between atomic Fe and carbon support via C-O-Fe bonding was found to be the key factor in lowering the energy barrier for the rate-limiting step of *OOH formation during OER.
Article
Chemistry, Multidisciplinary
Ning Wang et al.
ADVANCED MATERIALS
(2020)
Article
Chemistry, Physical
Junyuan Xu et al.
Article
Chemistry, Multidisciplinary
Longsheng Zhang et al.
ADVANCED MATERIALS
(2020)
Article
Chemistry, Multidisciplinary
Yao Yuan et al.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2020)
Article
Chemistry, Physical
Mei Han et al.
Article
Materials Science, Multidisciplinary
Yang Wang et al.
Article
Chemistry, Physical
Jung Sug Hong et al.
Article
Chemistry, Multidisciplinary
Yue Shao et al.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2019)
Article
Multidisciplinary Sciences
Yongtao Meng et al.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2019)
Article
Chemistry, Physical
Hua Bing Tao et al.
Article
Chemistry, Physical
Wei Shao et al.
Article
Instruments & Instrumentation
Alexey Boubnov et al.
JOURNAL OF SYNCHROTRON RADIATION
(2015)
Article
Multidisciplinary Sciences
Kimoon Lee et al.
