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首页> 外文期刊>Advanced Materials >Boosting CO_2 Electroreduction via the Synergistic Effect of Tuning Cationic Clusters and Visible-Light Irradiation
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Boosting CO_2 Electroreduction via the Synergistic Effect of Tuning Cationic Clusters and Visible-Light Irradiation

机译：通过调谐阳离子簇和可见光照射的协同效应提高CO_2电荷

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摘要

Introducing an external light field can increase the intrinsic activity and energy efficiency for electrochemical CO2 reduction. Herein, a synergistic strategy that introduces photosensitive components and visible light into a stable system is reported to improve the performance for CO2 reduction. The catalytic kinetics studies indicate that the synergistic effect of implantation of cationic Ti and additional light driving is the primary responsibility for accelerating the first electron transfer to form a *COO- intermediate. This leads to a satisfactory CO2-to-CO conversion for Zr/Ti-NB-Co in terms of high selectivity (Faradaic efficiency of 93.6% at -0.7 V), remarkable catalytic activity (production rate up to 546 mmol g(-1) h(-1) at -1.1 V), excellent long-term stability (without performance decay over 11 h), and large turnover frequency of 1028 h(-1) at -1.1 V under visible light. These results imply that the photodriven Ti-based porphyrin catalyst not only can deliver more electrons, but also can act as a photoswitch to adjust the electron transfer pathway.
机译：引入外部光场可以提高电化学二氧化碳减少的内在活动和能量效率。这里，据报道，将光敏组分和可见光引入稳定系统中的协同策略以提高CO2减少的性能。催化动力学研究表明，突出的阳离子Ti和额外光驱动的协同效应是加速第一电子转移以形成α共同的主要责任。这导致Zr / Ti-Nb-Co的令人满意的CO 2-o-CO转化，在高选择性（游览效率为93.6％，达到-0.7V），显着的催化活性（生产率高达546mmol g（-1 ）H（-1）在-1.1V），优异的长期稳定性（不具有超过11小时的性能衰减），并且在可见光下为-1.1V（-1）的大周转频率为-1.1V。这些结果意味着光转动的Ti基卟啉催化剂不仅可以提供更多的电子，而且可以充当照明电力以调节电子转移途径。

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  • 来源
    《Advanced Materials》 |2021年第27期|2101886.1-2101886.9|共9页
  • 作者

    Zhou Yue; Zheng Lirong; Yang Deren; Yang Haozhou; Wang Xun;

  • 作者单位

    Tsinghua Univ Dept Chem Key Lab Organ Optoelect & Mol Engn Beijing 100084 Peoples R China;

    Chinese Acad Sci Inst High Energy Phys Beijing Synchrotron Radiat Facil Beijing 100049 Peoples R China;

    Tsinghua Univ Dept Chem Key Lab Organ Optoelect & Mol Engn Beijing 100084 Peoples R China;

    Tsinghua Univ Dept Chem Key Lab Organ Optoelect & Mol Engn Beijing 100084 Peoples R China;

    Tsinghua Univ Dept Chem Key Lab Organ Optoelect & Mol Engn Beijing 100084 Peoples R China;

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  • 正文语种 eng
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  • 关键词

    cation exchange reactions; CO; (2) reduction; hollow structures; photocoupled electrocatalysis; porphyrin;

    机译：阳离子交换反应;（2）减少;中空结构;光电耦合电常见;卟啉;

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