Articles with "single atomic" as a keyword



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Direct Growth of Carbon Nanotubes Doped with Single Atomic Fe–N4 Active Sites and Neighboring Graphitic Nitrogen for Efficient and Stable Oxygen Reduction Electrocatalysis

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Published in 2019 at "Advanced Functional Materials"

DOI: 10.1002/adfm.201906174

Abstract: Single atomic Fe–Nx moieties embedded on a high surface area carbon (Fe–N/C) represents one of the most promising nonprecious metal electrocatalysts for the oxygen reduction reaction (ORR) in polymer electrolyte membrane fuel cells. While significant… read more here.

Keywords: direct growth; graphitic nitrogen; carbon; oxygen reduction ... See more keywords
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Gram-Scale Synthesis of High-Loading Single-Atomic-Site Fe Catalysts for Effective Epoxidation of Styrene.

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Published in 2020 at "Advanced materials"

DOI: 10.1002/adma.202000896

Abstract: Single-atomic-site (SAS) catalysts, a new frontier of catalysts, always show extremely high atom efficiency and unexpected catalytic properties. Herein, a pyrolyzing coordinated polymer (PCP) strategy is developed, which is facile and widely applicable in the… read more here.

Keywords: gram scale; sas sas; sas; single atomic ... See more keywords
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Tailoring the d‐Orbital Splitting Manner of Single Atomic Sites for Enhanced Oxygen Reduction

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Published in 2023 at "Advanced Materials"

DOI: 10.1002/adma.202210757

Abstract: Regulating the electronic states of single atomic sites around the Fermi level remains a major concern for boosting the electrocatalytic oxygen reduction reaction (ORR). Herein, a Fe d‐orbital splitting manner modulation strategy by constructing axial… read more here.

Keywords: atomic sites; oxygen reduction; splitting manner; single atomic ... See more keywords
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Investigating molecular orbitals with submolecular precision on pristine sites and single atomic vacancies of monolayer h-BN

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Published in 2020 at "Nano Research"

DOI: 10.1007/s12274-020-2842-5

Abstract: Understanding the influence of adsorption sites to the electronic properties of adsorbed molecules on two-dimensional (2D) ultrathin insulator is of essential importance for future organic-inorganic hybrid nanodevices. Here, the adsorption and electronic states of manganese… read more here.

Keywords: molecular orbitals; investigating molecular; orbitals submolecular; single atomic ... See more keywords
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High-Concentration Single Atomic Pt Sites on Hollow CuSx for Selective O2 Reduction to H2O2 in Acid Solution

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Published in 2019 at "Chem"

DOI: 10.1016/j.chempr.2019.04.024

Abstract: Summary The electrochemical direct synthesis of hydrogen peroxide (H2O2) is significant but still challenging because of the lack of highly selective and active catalysts. Here, we report the synthesis of hollow nanospheres constructed by atomically… read more here.

Keywords: single atomic; h2o2; atomic sites; high concentration ... See more keywords
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A Fe-N/FeS@C composite prepared via mechanical activation and pyrolysis for sulfite activation to degrade organic contaminants: Single atomic irons anchored into carbon matrix with encapsulated FeS nanoparticles

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Published in 2021 at "Journal of Environmental Chemical Engineering"

DOI: 10.1016/j.jece.2021.106451

Abstract: Abstract A novel structural composite (Fe-N/FeS@C) was synthesized via a self-doping strategy by the pyrolysis of a solid mixture of lignosulfonate and ferric nitrate pretreated by mechanical activation. The as-synthesized composite contained 7.5 wt% of single… read more here.

Keywords: encapsulated fes; mechanical activation; single atomic; fes nanoparticles ... See more keywords
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Acid-promoted Ir-La-S/AC-catalyzed methanol carbonylation on single atomic active sites

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Published in 2018 at "Chinese Journal of Catalysis"

DOI: 10.1016/s1872-2067(18)63019-0

Abstract: Abstract Highly active Ir-La-S/AC catalyst was successfully prepared by co-impregnation of an activated carbon (AC) carrier with a sulfuric acid solution of Ir and La species and compared with a traditionally prepared Ir-La/AC catalyst. High… read more here.

Keywords: methanol; promoted catalyzed; carbonylation; single atomic ... See more keywords
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Density functional theory calculations on single atomic catalysis: Ti-decorated Ti3C2O2 monolayer (MXene) for HCHO oxidation

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Published in 2020 at "Chinese Journal of Catalysis"

DOI: 10.1016/s1872-2067(20)63571-9

Abstract: Abstract Formaldehyde (HCHO) is a common indoor pollutant, long-term exposure to HCHO may harm human health. Its efficient removal at mild conditions is still challenging. The catalytic oxidation of HCHO molecules on a single atomic… read more here.

Keywords: single atomic; oxidation; ti3c2o2 monolayer; hcho ... See more keywords
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Imaging Conductivity in a Single Atomic Layer

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Published in 2020 at "Microscopy and Microanalysis"

DOI: 10.1017/s1431927620019030

Abstract: Graphene-based devices are of interest for a wide variety of applications. Many require exquisite control of the atomic structure [1, 2]. The focused probe in a scanning transmission electron microscope (STEM) is well suited for… read more here.

Keywords: single atomic; fabrication; atomic layer; imaging conductivity ... See more keywords
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Iridium Single-Atomic Site Catalysts with Superior Oxygen Reduction Reaction Activity for Sensitive Monitoring of Organophosphorus Pesticides.

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Published in 2021 at "Analytical chemistry"

DOI: 10.1021/acs.analchem.1c04665

Abstract: Tremendous efforts have been made in developing single-atomic site catalysts (SASCs) for oxygen reduction reaction (ORR), which is regarded as a pivotal cornerstone in electrochemical energy conversion. However, SASCs for ORR have not been explored… read more here.

Keywords: reduction reaction; oxygen reduction; activity; site catalysts ... See more keywords
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Two-Dimensional Fe-N-C Single-Atomic-Site Catalysts with Boosted Peroxidase-Like Activity for a Sensitive Immunoassay.

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Published in 2023 at "Analytical chemistry"

DOI: 10.1021/acs.analchem.2c05633

Abstract: Single-atomic-site catalysts (SASCs) with peroxidase (POD)-like activities have been widely used in various sensing platforms, like the enzyme-linked immunosorbent assay (ELISA). Herein, a two-dimensional Fe-N-C-based SASC (2D Fe-SASC) is successfully synthesized with excellent POD-like activity… read more here.

Keywords: two dimensional; site catalysts; like activity; activity ... See more keywords