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      A Single-Atom Nanozyme for Wound Disinfection Applications

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          Abstract

          Single-atom catalysts (SACs), as homogeneous catalysts, have been widely explored for chemical catalysis. However, few studies focus on the applications of SACs in enzymatic catalysis. Herein, we report that a zinc-based zeolitic-imidazolate-framework (ZIF-8)-derived carbon nanomaterial containing atomically dispersed zinc atoms can serve as a highly efficient single-atom peroxidase mimic. To reveal its structure-activity relationship, the structural evolution of the single-atom nanozyme (SAzyme) was systematically investigated. Furthermore, the coordinatively unsaturated active zinc sites and catalytic mechanism of the SAzyme are disclosed using density functional theory (DFT) calculations. The SAzyme, with high therapeutic effect and biosafety, shows great promises for wound antibacterial applications.

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          Single-Atom Catalysts: Synthetic Strategies and Electrochemical Applications

          Yuanjun Chen, Qing Peng, Yadong Li … (2018)
          Article 0 comments Cited 690 times – based on 0 reviews     Review now
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            High lithium anodic performance of highly nitrogen-doped porous carbon prepared from a metal-organic framework.

            Fangcai Zheng, Yang Yang, Qianwang Chen (2014)
            Theoretical and experimental results have revealed that the lithium-ion storage capacity for nitrogen-doped graphene largely depends on the nitrogen-doping level. However, most nitrogen-doped carbon materials used for lithium-ion batteries are reported to have a nitrogen content of approximately 10 wt% because a higher number of nitrogen atoms in the two-dimensional honeycomb lattice can result in structural instability. Here we report nitrogen-doped graphene particle analogues with a nitrogen content of up to 17.72 wt% that are prepared by the pyrolysis of a nitrogen-containing zeolitic imidazolate framework at 800 °C under a nitrogen atmosphere. As an anode material for lithium-ion batteries, these particles retain a capacity of 2,132 mA h g(-1) after 50 cycles at a current density of 100 mA g(-1), and 785 mAh g(-1) after 1,000 cycles at 5 A g(-1). The remarkable performance results from the graphene analogous particles doped with nitrogen within the hexagonal lattice and edges.
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              Iodine modified carbon nitride semiconductors as visible light photocatalysts for hydrogen evolution.

              Guigang Zhang, Mingwen Zhang, Xinxin Ye … (2014)
              An optimized and general synthetic strategy based on in-situ iodine modifying of polymeric graphitic carbon nitride is discussed. The as-prepared iodine functionalized g-CN shows enhanced electronic and optical properties, as well as increased photocatalytic activities in an assay of hydrogen evolution.
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                Author and article information

                Journal
                Title: Angewandte Chemie International Edition
                Abbreviated Title: Angew. Chem. Int. Ed.
                Publisher: Wiley
                ISSN: 14337851
                Publication date Created: April 01 2019
                Publication date (Print): April 01 2019
                Publication date (Electronic): March 05 2019
                Volume: 58
                Issue: 15
                Pages: 4911-4916
                Affiliations
                [1 ]Beijing Advanced Innovation Center for Soft Matter Science and Engineering; State Key Laboratory of Organic-Inorganic Composites, Bionanomaterials & Translational Engineering Laboratory; Beijing Key Laboratory of Bioprocess; Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology; Beijing 100029 China
                [2 ]Laboratory of Theoretical and Computational Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchial Fabrication; CAS Center for Excellence in Nanoscience; National Center for Nanoscience and Technology; Beijing 100190 China
                [3 ]Institute of Translational Medicine; Department of Pharmacology; School of Medicine; Yangzhou University; Yangzhou Jiangsu 225001 China
                [4 ]Key Laboratory of Protein and Peptide Pharmaceuticals; Institute of Biophysics; Chinese Academy of Sciences; Beijing 100101 China
                [5 ]Beijing Synchrotron Radiation Facility; Institute of High Energy Physics; Chinese Academy of Sciences; Beijing 100049 China
                [6 ]Department of Chemical Engineering and Biotechnology; National Taipei University of Technology; Taipei 106 Taiwan ROC
                Article
                DOI: 10.1002/anie.201813994
                PubMed ID: 30697885
                SO-VID: 68a41d9e-81a3-4f23-a0ce-6974395d2035
                Copyright © © 2019
                License:

                http://doi.wiley.com/10.1002/tdm_license_1.1

                http://onlinelibrary.wiley.com/termsAndConditions#vor

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