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ZnOHF纳米棒用于电催化二氧化碳还原制一氧化碳

王栋 钟达忠 郝根彦 李晋平 赵强

王栋, 钟达忠, 郝根彦, 李晋平, 赵强. ZnOHF纳米棒用于电催化二氧化碳还原制一氧化碳[J]. 燃料化学学报. doi: 10.1016/S1872-5813(21)60082-8
引用本文: 王栋, 钟达忠, 郝根彦, 李晋平, 赵强. ZnOHF纳米棒用于电催化二氧化碳还原制一氧化碳[J]. 燃料化学学报. doi: 10.1016/S1872-5813(21)60082-8
WANG Dong, ZHONG Da-zhong, HAO Gen-yan, LI Jin-ping, ZHAO Qiang. ZnOHF nanorods for efficient electrocatalytic reduction of carbon dioxide to carbon monoxide carbon dioxide to carbon monoxide[J]. Journal of Fuel Chemistry and Technology. doi: 10.1016/S1872-5813(21)60082-8
Citation: WANG Dong, ZHONG Da-zhong, HAO Gen-yan, LI Jin-ping, ZHAO Qiang. ZnOHF nanorods for efficient electrocatalytic reduction of carbon dioxide to carbon monoxide carbon dioxide to carbon monoxide[J]. Journal of Fuel Chemistry and Technology. doi: 10.1016/S1872-5813(21)60082-8

ZnOHF纳米棒用于电催化二氧化碳还原制一氧化碳

doi: 10.1016/S1872-5813(21)60082-8
基金项目: 国家自然科学基金(21878202,21975175),山西省回国留学人员科研资助(2017-041),山西省自然科学基金(201801D121052)资助
详细信息
    作者简介:

    王栋:wangdong0512@link.tyut.edu.cn

    通讯作者:

    E-mail: zhaoqiang@tyut.edu.cn

ZnOHF nanorods for efficient electrocatalytic reduction of carbon dioxide to carbon monoxide carbon dioxide to carbon monoxide

Funds: The project was supported by the National Natural Science Foundation of China (21878202, 21975175), the Research Project Supported by Shanxi Scholarship Council of China (2017-041) and the Natural Science Foundation of Shanxi Province (201801D121052)
  • 摘要: 通过电催化的方式将二氧化碳资源化利用是缓解或解决目前人类面临的生态危机的理想途径之一。开发廉价高效的催化剂是推动电催化二氧化碳还原走向工业化的关键。一氧化碳是重要的工业原料,利用CO2还原制备CO具有重要的研究意义,但能够将CO2转化为CO的高活性贵金属催化剂难以大规模应用,地球储量丰富的Zn基催化剂是具有潜力的替代者。然而,Zn基催化剂还原活性仍然难以满足现实需求且种类不够丰富。作者将ZnOHF材料引入到电催化CO2还原中,通过简单水热合成法制备了不同尺寸的ZnOHF纳米棒并利用流动型电解池测试其性能。纳米棒较大的比表面积以及材料表面F原子的存在使其具有良好的催化活性,流动型电解池的使用加速了反应传质过程,在−1.28V (vs. RHE)电势下,R2-ZnOHF纳米棒的CO法拉第效率最高为76.4 %,CO分电流密度为57.53 mA/cm2
  • 图  1  (a):样品的制备流程图;(b):Zn4CO3(OH)6、R1-ZnOHF、R2-ZnOHF及R3-ZnOHF的XRD衍射谱图

    Figure  1  (a): Sample preparation flow chart; (b): XRD patterns of Zn4CO3(OH)6, R1-ZnOHF, R2-ZnOHF and R3-ZnOHF

    图  2  (a)Zn4CO3(OH)6、(b)R1-ZnOHF、(c)R2-ZnOHF及(d)R3-ZnOHF的扫描电镜照片

    Figure  2  SEM of (a) Zn4CO3(OH)6, (b) R1-ZnOHF, (c) R2-ZnOHF and (d) R3-ZnOHF

    图  3  Zn4CO3(OH)6、R1-ZnOHF、R2-ZnOHF及R3-ZnOHF的(a)红外谱图和(b)N2吸附-脱附曲线

    Figure  3  (a) FT-IR spectrum spectra and (b) N2 adsorption/desorption isotherms of Zn4CO3(OH)6, R1-ZnOHF, R2-ZnOHF and R3-ZnOHF

    图  4  (a):R1-ZnOHF、(b):R2-ZnOHF、(c):R3-ZnOHF的XPS全谱图(表格为各元素含量及结合能位置);(d):R1-ZnOHF、R2-ZnOHF和R3-ZnOHF的表面F原子含量柱状对比

    Figure  4  (a): XPS survey spectra of R1-ZnOHF; (b): R2-ZnOHF; (c): R3-ZnOHF (the table shows the content and binding energy position of each element); (d): surface F atom content for R1-ZnOHF, R2-ZnOHF and R3-ZnOHF

    图  5  R2-ZnOHF的(a)透射电镜照片,(b)高倍透射照片,(c)EDS元素分布

    Figure  5  (a) Transmission electron microscope image, (b) High resolution transmission image, (c) EDS mapping of R2-ZnOHF

    图  6  (a)R1-ZnOHF、(b)R2-ZnOHF及(c)R3-ZnOHF的CO和H2法拉第效率;(d)R1-ZnOHF、R2-ZnOHF及R3-ZnOHF不同电位下CO法拉第效率柱状对比

    Figure  6  CO and H2 Faraday efficiency of (a) R1-ZnOHF, (b) R2-ZnOHF and (c) R3-ZnOHF; (d) CO Faraday efficiency comparison chart of R1-ZnOHF, R2-ZnOHF and R3-ZnOHF at different potentials

    图  7  R1-ZnOHF、R2-ZnOHF及R3-ZnOHF的(a)总电流密度,(b)CO分电流密度,(c)H2分电流密度,(d)EIS谱图

    Figure  7  (a) Total current density, (b) CO partial current density, (c) H2 partial current density, (d) EIS spectra of R1-ZnOHF, R2-ZnOHF and R3-ZnOHF

    图  8  Zn4CO3(OH)6和R2-ZnOHF的(a)CO法拉第效率对比,(b)H2分电流密度对比;H型电解池和流动型电解池中R2-ZnOHF的(c)CO法拉第效率,(d)总电流密度

    Figure  8  (a) CO Faraday efficiency comparison and (b) H2 partial current density comparison of Zn4CO3(OH)6 and R2-ZnOHF; (c) CO Faraday efficiency and (d) Total current density in H-type cell and Flow cell of R2-ZnOHF

    图  9  (a)反应后R2-ZnOHF的XRD谱图;(b)反应后R2-ZnOHF的扫描电镜照片;(c)稳定性测试,电解液为0.1 mol/L KHCO3

    Figure  9  (a) XRD pattern and (b) Scanning electron micrograph of R2-ZnOHF after reaction; (c) Stability Test of R2-ZnOHF in H-type cell, the electrolyte is 0.1 mol/L KHCO3

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  • 收稿日期:  2021-03-09
  • 修回日期:  2021-04-01
  • 网络出版日期:  2021-04-22

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