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Multidisciplinary Sciences
Peike Cao et al.
Summary: The authors report a scalable cobalt single-site catalyst for hydrogen peroxide synthesis at industrial-relevant currents in acidic, neutral or alkaline electrolyte, providing a sustainable alternative to traditional anthraquinone technology.
NATURE COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Minmin Yan et al.
Summary: The researchers synthesized a material with high-density (10.32 wt%) single atoms of antimony (Sb) on nitrogen- and sulfur-codoped carbon nanofibers using a nanoarchitectured Sb2S3 template. This material exhibited high selectivity (97.2%) and mass activity (114.9 A g(-1)) for the 2e(-) ORR in alkaline electrolyte. Experimental and theoretical calculations showed that the coordination configuration and S dopants contributed to the enhanced activity and selectivity of the material.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Chaoqi Zhang et al.
Summary: An elaborate design enables the precise control of Zn/Co bimetallic zeolite imidazole frameworks (ZnCo-ZIFs) and makes them excellent 2e-ORR electrocatalysts. The control at both atomic and nano-scale regulates the role of water molecules and adjusts the coordination unsaturation degree of active sites. The optimized ZnCo-ZIF exhibits high 2e(-) selectivity and H2O2 yield, paving a new avenue for the development of multivariate MOFs as advanced 2e-ORR electrocatalysts.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Canhui Zhang et al.
Summary: This study constructed adjacent Fe3C nanoparticles coupled with single Fe sites on N-doped carbon, which achieved the rapid conversion of oxygen-containing intermediates and fast proton-coupled electron transfer process. The Fe3C@Fe-SA-NC catalyst exhibited excellent performance in terms of half-wave potential, peak power density and long-term stability. The research provides important insights into improving the oxygen reduction reaction kinetics of single atomic sites and offers guidance for the rational design of cost-effective electrocatalysts for energy conversion and storage technologies.
Article
Multidisciplinary Sciences
Wenjun Fan et al.
Summary: The authors successfully design hybrid single-atom catalysts by an axial coordination linkage of molecular cobalt phthalocyanine with carbon nanotubes for selective oxygen reduction reaction. The hybrid single-atom catalysts have a well-defined active site structure and clear coordination linkage, which facilitate the rational screening of target catalysts and understanding of the underlying oxygen reduction reaction mechanism. The optimized hybrid catalysts exhibit improved 2e(-) oxygen reduction reaction performance compared to the corresponding homogeneous molecular catalyst.
NATURE COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Yangyang Liu et al.
Summary: The chlor-alkali process is important in the chemical industry due to the diverse usage of chlorine gas. However, current chlorine evolution reaction (CER) electrocatalysts have inefficiencies that result in high energy consumption. This study presents a highly active single-atom ruthenium catalyst for the electro synthesis of chlorine in seawater-like solutions. The catalyst exhibits low overpotential and high stability and selectivity, offering potential for efficient chlorine production from seawater.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Byoung-Hoon Lee et al.
Summary: Researchers have developed a supramolecular approach using a carbon nanotube substrate and a cobalt phthalocyanine catalyst to improve the efficiency and stability of two-electron oxygen reduction for H2O2 production. This approach shows significant improvement compared to the state-of-the-art electrocatalysts, with higher activity and sustained performance.
Article
Chemistry, Analytical
Yu-Lin Sun et al.
Summary: This study employed in situ surface-enhanced Raman spectroscopy (SERS) to detect the intermediates during the oxygen reduction reaction (ORR) process on AugPd@Pt core/shell heterogeneous nanoparticles. The results revealed the influence of strain and electronic effect on ORR performance, providing a theoretical basis for the construction of high-performance ORR electrocatalysts.
ANALYTICAL CHEMISTRY
(2022)
Article
Multidisciplinary Sciences
Xuan Zhao et al.
Summary: The pursuit of selective two-electron oxygen reduction reaction to H2O2 in acids is challenging due to the lack of efficient non-precious-metal-based electrocatalysts. In this study, cobalt porphyrin is identified as the optimal candidate for this reaction. By preparing hydrogen-bonded cobaltoporphyrin frameworks, the solution accessibility of active sites is promoted, leading to excellent catalytic performance. The findings of this study offer new insights for the development of efficient electrocatalysts for the selective reduction of H2O2.
NATURE COMMUNICATIONS
(2022)
Article
Multidisciplinary Sciences
Xiao Zhang et al.
Summary: In this study, a cation-regulated shielding effect is used to promote the selectivity of electrochemical oxygen reduction to H2O2 in acidic media. The method shows high efficiency, selectivity, and stability for practical applications.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Jie Wu et al.
Summary: By using a composition engineering strategy, the intrinsic activity of amorphous nickel boride nanoarchitectures can be flexibly regulated, leading to efficient 2e(-) oxygen reduction reaction. The amorphous NiB2 exhibits a 2e(-) selectivity of over 93% in a wide potential range and negligible activity decay over extended periods. Moreover, assembling NiB2 in gas diffusion electrode enables an ultrahigh H2O2 production rate.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Chuqian Xiao et al.
Summary: The study synthesized a single-atom catalyst that can achieve high H2O2 production rates at high current densities, outperforming other reported catalysts in electrochemical synthesis.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Xiaoxiao Wei et al.
Summary: This study proposes a new method for synthesizing urea at ambient conditions, which improves the efficiency of the C-N coupling reaction by stabilizing the crucial intermediate through the insertion of oxygen vacancies. The existence of oxygen vacancy-mediated selective C-N coupling reaction is verified through in situ spectroscopy techniques. The introduction of oxygen vacancies transforms the common catalyst carrier into an efficient electrocatalyst, with a higher urea yield rate compared to partial noble-metal-based electrocatalysts.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Shanyong Chen et al.
Summary: The research reveals that pyrrole-type CoN4 and pyridine-type CoN4 are responsible for 2e- ORR and 4e- ORR reactions, respectively. Pyrrole-type CoN4 catalyst exhibits excellent H2O2 selectivity and yield in acid media. This study is significant for understanding the structure-function relationship of Co-N4 single-atom catalysts and improving H2O2 production.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Ya-Rong Zheng et al.
Summary: A composite catalyst composed of black phosphorus (BP) and metallic cobalt diselenide (CoSe2) is reported to exhibit selective and efficient two-electron reduction of oxygen toward the production of H2O2 in acidic environments, showing promise for on-site applications.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Yuhui Tian et al.
Summary: High efficiency and selectivity of electrocatalysts are crucial for energy storage applications. This study investigates the edge effect of carbon-supported single-atom catalysts on oxygen reduction reaction pathways and determines that the edge-hosted atomic Co-N-4 sites are more favorable. The synthesized edge-rich catalyst exhibits excellent performance and the saturation of oxygen functional groups further promotes electrocatalysis.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
R. Dominic Ross et al.
Summary: This study demonstrates the potential of a metal organic framework catalyst called Ni(3)HAB(2) for selective and active two-electron oxygen reduction reaction (2e(-) ORR) in neutral electrolytes. The study also reveals the influence of the catalyst's redox features on the ORR and proposes a hypothesis for the reaction mechanism.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Cheng Tang et al.
Summary: This study demonstrates that the molecular-level local structure, including first and second coordination spheres, plays a critical role in determining the selectivity of catalytic reactions. By modifying the first and second coordination spheres of Co-SACs, it is possible to tailor the oxygen reduction reaction selectivity. The unique selectivity change originates from the structure-dependent shift of active sites, leading to improved activity and selectivity for acidic H2O2 electrosynthesis.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Multidisciplinary Sciences
Yang Xia et al.
Summary: Oxygen reduction reaction provides an environmentally-benign route for hydrogen peroxide production but lacks efficient catalysts to achieve high selectivity and activity simultaneously. Here, the authors report a boron-doped carbon catalyst which shows great promise with outstanding performance.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Qinglan Zhao et al.
Summary: The study demonstrates the efficient production of H2O2 using cobalt single-atom catalysts in simulated seawater, showing long-term stability and high chloride-endurability. It reveals that the Co-N-5 structure is the main active site for H2O2 formation, offering a promising pathway for large-scale electrocatalytic oxygen reduction in simulated seawater towards energy sustainability.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
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Jingjing Duan et al.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2020)
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Jin-Chao Dong et al.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2020)
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Multidisciplinary Sciences
Qizhan Zhang et al.
NATURE COMMUNICATIONS
(2020)
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Euiyeon Jung et al.
ACS ENERGY LETTERS
(2020)
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Tian-Nan Ye et al.
Review
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Tu N. Nguyen et al.
CHEMICAL SOCIETY REVIEWS
(2020)
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Qihao Yang et al.
NATURE COMMUNICATIONS
(2020)
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Yanyan Sun et al.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2019)
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Multidisciplinary Sciences
Chuan Xia et al.
Article
Energy & Fuels
Jin-Chao Dong et al.
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Samira Siahrostami et al.
