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首页> 外文期刊>Applied Surface Science >Synergistic effect of surface coated and bulk doped carbon on enhancing photocatalytic CO_2 reduction for MgIn_2S_4 microflowers
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Synergistic effect of surface coated and bulk doped carbon on enhancing photocatalytic CO_2 reduction for MgIn_2S_4 microflowers

机译：表面涂层的协同作用和散装掺杂碳对米艮第掺杂剂增强光催化CO_2减少的影响

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摘要

Convert inert CO2 into chemical fuel via photocatalytic reduction is very intriguing. However, high charge recombination rate and inadequate CO2 absorption severely impede photocatalytic CO2 reduction activity. To address these drawbacks, we developed a strategy of MgIn2S4 modification by carbon. Two types of photocatalysts with carbon modifications, carbon-coated MgIn2S4 (MgIn2S4-SC); carbon coating and doping MgIn2S4 (MgIn2S4-Cx), were obtained and exhibited significantly enhanced catalytic activity. The CO evolution rate of MgIn2S4-C2 and MgIn2S4-SC reached 19.5 and 7.03 times higher than that of unmodified MgIn2S4, respectively. Our experimental and theoretical results disclosed that doped carbon for MgIn2S4 could prevent charge recombination in the bulk, facilitate CO2 adsorption, and decrease photocatalytic reaction energy barrier, while coated carbon could accelerate surface carrier migration, but had smaller and greater effect on fascinating CO2 adsorption and decreasing reaction energy barrier. The synergistic effect of surface coated and bulk doped carbon could maximize the photocatalysis efficiency.
机译：通过光催化还原将惰性CO2转化为化学燃料是非常有趣的。然而，高电荷重组率和不充分的CO 2吸收严重阻碍了光催化二氧化碳还原活性。为了解决这些缺点，我们开发了碳统计学的策略。两种类型的光催化剂，碳修饰，碳涂层米氏菌（Mgin2S4-SC）;获得碳涂层和掺杂型MING2S4（MGIN2S4-CX），并表现出显着增强的催化活性。 MING2S4-C2和MGIN2S4-SC的CO进化率分别达到了比未修饰的MGIN2S4高的19.5％和7.03倍。我们的实验和理论结果公开了摩尔2S4的掺杂碳可以防止体积中的电荷重组，促进CO 2吸附，并降低光催化反应能量屏障，而涂层碳可以加速表面载体迁移，但对迷人的CO 2吸附具有更大和更大的影响减少反应能量屏障。表面涂层和散装碳碳的协同效应可以最大化光催化效率。

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  • 来源
    《Applied Surface Science》 |2021年第15期|148686.1-148686.9|共9页
  • 作者

    Zeng Chao; Zeng Qing; Dai Chunhui; Zhang Likai; Hu Yingmo;

  • 作者单位

    Jiangxi Normal Univ Inst Adv Mat IAM Coll Chem & Chem Engn Nanchang 330022 Jiangxi Peoples R China|China Univ Geosci Beijing Key Lab Mat Utilizat Nonmetall Minerals & Natl Lab Mineral Mat Sch Mat Sci & Technol Beijing 100083 Peoples R China;

    Fudan Univ Dept Mat Sci Minist Educ Shanghai 200433 Peoples R China|Fudan Univ Adv Coatings Res Ctr Minist Educ Shanghai 200433 Peoples R China;

    East China Univ Technol Jiangxi Key Lab Mass Spectrometry & Instrumentat Nanchang 330013 Jiangxi Peoples R China;

    China Univ Geosci Beijing Key Lab Mat Utilizat Nonmetall Minerals & Natl Lab Mineral Mat Sch Mat Sci & Technol Beijing 100083 Peoples R China;

    China Univ Geosci Beijing Key Lab Mat Utilizat Nonmetall Minerals & Natl Lab Mineral Mat Sch Mat Sci & Technol Beijing 100083 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Photocatalysis; CO2 reduction; Coated carbon; Doped carbon; MgIn2S4;

    机译：光催化;CO2减少;涂层碳;掺杂碳;米京2S4;

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