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  1. Article ; Online: Interface-confined synthesis of a nonplanar redox-active covalent organic framework film for synaptic memristors.

    Wu, Dongchuang / Zhang, Qiongshan / Wang, Xiaoyang / Zhang, Bin

    Nanoscale

    2023  Volume 15, Issue 6, Page(s) 2726–2733

    Abstract: The development of novel synthetic methodologies and unprecedented structures of covalent organic framework (COF) films is of great importance for exploring their potential applications in optoelectronic devices, sensors, and membrane separation. From ... ...

    Abstract The development of novel synthetic methodologies and unprecedented structures of covalent organic framework (COF) films is of great importance for exploring their potential applications in optoelectronic devices, sensors, and membrane separation. From the point of view of monomer selection, rigid building blocks are always the first choice for synthesizing crystalline COF films. However, the preparation of COF films with flexible building units remains challenging. Herein, by introducing flexible triphenylamine-based building units, a nonplanar COF film (TFPA-TAPA film) is fabricated
    Language English
    Publishing date 2023-02-09
    Publishing country England
    Document type Journal Article
    ZDB-ID 2515664-0
    ISSN 2040-3372 ; 2040-3364
    ISSN (online) 2040-3372
    ISSN 2040-3364
    DOI 10.1039/d2nr06904k
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Molecular-Potential and Redox Coregulated Cathodic Electrosynthesis toward Ionic Azulene-Based Thin Films for Organic Memristors.

    Zhang, Qiongshan / Wu, Dongchuang / Fu, Yubin / Li, Jinyong / Chen, Yu / Zhang, Bin

    ACS applied materials & interfaces

    2024  Volume 16, Issue 17, Page(s) 22217–22228

    Abstract: Organic memristors as promising electronic units are attracting significant attention owing to their simplicity of molecular structure design. However, fabricating high-quality organic films via novel synthetic technologies and exploring unprecedented ... ...

    Abstract Organic memristors as promising electronic units are attracting significant attention owing to their simplicity of molecular structure design. However, fabricating high-quality organic films via novel synthetic technologies and exploring unprecedented chemical structures to achieve excellent memory performance in organic memristor devices are highly challenging. In this work, we report a cathodic electropolymerization to synthesize an ionic azulene-based memristive film (PPMAz-Py
    Language English
    Publishing date 2024-04-19
    Publishing country United States
    Document type Journal Article
    ISSN 1944-8252
    ISSN (online) 1944-8252
    DOI 10.1021/acsami.3c19527
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Iron clusters boosted performance in electrocatalytic carbon dioxide conversion

    Wu, Dongchuang / Wang, Xinyue / Shi, Linghao / Jiang, Kaiyue / Wang, Mengjia / Lu, Chenbao / Chen, Zhenying / Liu, Pan / Zhang, Jichao / Tranca, Diana / Hou, Yang / Chen, Yu / Zhuang, Xiaodong

    Journal of materials chemistry A. 2020 Oct. 27, v. 8, no. 41

    2020  

    Abstract: Metal clusters with exposed atomic interfaces and unique electronic structures have received considerable attention in heterogeneous catalysis. However, their potential application in the electrocatalytic CO₂ reduction reaction (CO₂RR) remains very ... ...

    Abstract Metal clusters with exposed atomic interfaces and unique electronic structures have received considerable attention in heterogeneous catalysis. However, their potential application in the electrocatalytic CO₂ reduction reaction (CO₂RR) remains very challenging because metal clusters tend to drive the competitive hydrogen evolution reaction. In this study, we prepared Fe-cluster sites with positive valence anchored on ordered mesoporous carbon materials for use as an efficient and durable electrocatalyst in carbon dioxide electroreduction. The as-prepared catalyst exhibits high selectivity, with a CO faradaic efficiency of higher than 98% at a low overpotential of 0.37 V, and retains 98.5% of its initial selectivity after 50 h of electrolysis in 0.5 M KHCO₃. In addition, the as-prepared catalyst exhibits enhanced selectivity of more than 95% from −0.5 to −0.8 V in 0.1 M KHCO₃, has 98.6% CO faradaic efficiency at a low overpotential of 0.49 V, and retains 99% of its initial selectivity after 50 h of electrolysis, thus outperforming state-of-the-art Fe–N-based single-atom catalysts. Density functional theory calculations revealed that the atomic interfaces on the Fe clusters reduce the reaction barrier for the *COOH intermediate, thus contributing to the rapid transformation of CO₂ molecules and resulting in excellent catalytic performance.
    Keywords carbon ; carbon dioxide ; catalysts ; catalytic activity ; density functional theory ; electrolysis ; hydrogen production ; porous media
    Language English
    Dates of publication 2020-1027
    Size p. 21661-21667.
    Publishing place The Royal Society of Chemistry
    Document type Article
    Note NAL-AP-2-clean
    ZDB-ID 2702232-8
    ISSN 2050-7496 ; 2050-7488
    ISSN (online) 2050-7496
    ISSN 2050-7488
    DOI 10.1039/d0ta07867k
    Database NAL-Catalogue (AGRICOLA)

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  4. Article ; Online: Topological defect-containing Fe/N co-doped mesoporous carbon nanosheets as novel electrocatalysts for the oxygen reduction reaction and Zn-air batteries.

    Ding, Junjie / Wu, Dongchuang / Huang, Senhe / Lu, Chenbao / Chen, Yu / Zhang, Jichao / Zhang, Longhai / Li, Jin / Ke, Changchun / Tranca, Diana / Kymakis, Emmanuel / Zhuang, Xiaodong

    Nanoscale

    2021  Volume 13, Issue 31, Page(s) 13249–13255

    Abstract: Developing effective electrocatalysts for the oxygen reduction reaction is of great significance for clean and renewable energy technologies, such as metal-air batteries and fuel cells. Defect engineering is the central focus of this field because the ... ...

    Abstract Developing effective electrocatalysts for the oxygen reduction reaction is of great significance for clean and renewable energy technologies, such as metal-air batteries and fuel cells. Defect engineering is the central focus of this field because the overall catalytic performance crucially depends on highly active defects. For the ORR, topological defects have been proven to have a positive effect. However, because preparation and characterization of such defects are difficult, a basic understanding of the relationship between topological defects and catalytic performance remains elusive. In this study, topological defect-containing Fe/N co-doped mesoporous carbon nanosheets were synthesized using azulene-based sandwich-like polymer nanosheets as the precursor. As electrocatalysts, such porous carbon nanosheets exhibited promising ORR activity, methanol tolerance ability, and stability with a half-wave potential of 841 mV under alkaline conditions, which is superior to those of most of the reported porous carbons. As the air cathode for Zn-air batteries, the catalyst exhibited a peak power density of 153 mW cm
    Language English
    Publishing date 2021-07-29
    Publishing country England
    Document type Journal Article
    ZDB-ID 2515664-0
    ISSN 2040-3372 ; 2040-3364
    ISSN (online) 2040-3372
    ISSN 2040-3364
    DOI 10.1039/d1nr03147c
    Database MEDical Literature Analysis and Retrieval System OnLINE

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