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Engineering single-atomic Ni sites stabilized with adjacent spinel nanoparticles to boost CO2 electroreduction.

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Title: Engineering single-atomic Ni sites stabilized with adjacent spinel nanoparticles to boost CO2 electroreduction.
Authors: Ping, Dan1 (AUTHOR), Feng, Yichen1 (AUTHOR), Wu, Shide1 (AUTHOR) wushide@zzuli.edu.cn, Wang, Dingsheng2 (AUTHOR), Liu, Weitao1 (AUTHOR), Zhang, Qikang1 (AUTHOR), Fang, Hua3 (AUTHOR), Li, Yanyan1 (AUTHOR), Liu, Bingkun1 (AUTHOR), Zhang, Jianqiang1 (AUTHOR), Wang, Shiwen3 (AUTHOR), Fang, Shaoming1 (AUTHOR) mingfang@zzuli.edu.cn
Source: Separation & Purification Technology. May2025:Part B, Vol. 357, pN.PAG-N.PAG. 1p.
Subjects: Oxygen vacancy, Chemical kinetics, Carbon dioxide, Atoms, Spinel
Abstract: [Display omitted] • A single-atomic Ni catalyst stabilized by MgAl 2 O 4 nanoparticles is developed via a facile pyrolysis strategy. • The NiMgAl LDHs self-confinement metal precursor and its derived MgAl 2 O 4 are crucial for stabilizing Ni atoms. • High selectivity with CO Faradaic efficiency nearly 100% and remarkable stability are demonstrated. • Unveiling the indispensible role of MgAl 2 O 4 in boosting CO 2 RR and suppressing HER. Single-atom catalysts show great potential in the electrochemical CO 2 reduction reaction (CO 2 RR), but face significant challenges in accelerating reaction kinetics. Herein, we develop a three-dimensional heterostructured MgAl 2 O 4 /Ni-N-C catalyst via a facile pyrolysis strategy, featuring abundant atomically dispersed Ni sites and ∼14 nm MgAl 2 O 4 nanoparticles. The MgAl 2 O 4 with rich oxygen vacancies is crucial for stabilizing Ni atoms and promoting CO 2 activation, thereby contributing to an excellent selectivity of nearly 100 % and good stability for CO production. The CO Faraday efficiency remains > 90 % within a large potential window (−0.57 to −0.97 V vs. RHE), and achieves the maximum of 98.7 % at −0.82 V. Theoretical calculations reveal that MgAl 2 O 4 introduction can modulate the electron structure of Ni atoms, and accelerate the formation of *COOH intermediate, thus boosting CO 2 RR performance. This research provides a novel approach for the design of high-efficiency single-atom catalysts for CO 2 conversion. [ABSTRACT FROM AUTHOR]
Copyright of Separation & Purification Technology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 181774717
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  Data: Engineering single-atomic Ni sites stabilized with adjacent spinel nanoparticles to boost CO2 electroreduction.
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  Data: <searchLink fieldCode="AR" term="%22Ping%2C+Dan%22">Ping, Dan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Feng%2C+Yichen%22">Feng, Yichen</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wu%2C+Shide%22">Wu, Shide</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> wushide@zzuli.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Wang%2C+Dingsheng%22">Wang, Dingsheng</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Weitao%22">Liu, Weitao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Qikang%22">Zhang, Qikang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Fang%2C+Hua%22">Fang, Hua</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Yanyan%22">Li, Yanyan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Bingkun%22">Liu, Bingkun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Jianqiang%22">Zhang, Jianqiang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Shiwen%22">Wang, Shiwen</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Fang%2C+Shaoming%22">Fang, Shaoming</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> mingfang@zzuli.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Separation+%26+Purification+Technology%22">Separation & Purification Technology</searchLink>. May2025:Part B, Vol. 357, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Oxygen+vacancy%22">Oxygen vacancy</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+kinetics%22">Chemical kinetics</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+dioxide%22">Carbon dioxide</searchLink><br /><searchLink fieldCode="DE" term="%22Atoms%22">Atoms</searchLink><br /><searchLink fieldCode="DE" term="%22Spinel%22">Spinel</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: [Display omitted] • A single-atomic Ni catalyst stabilized by MgAl 2 O 4 nanoparticles is developed via a facile pyrolysis strategy. • The NiMgAl LDHs self-confinement metal precursor and its derived MgAl 2 O 4 are crucial for stabilizing Ni atoms. • High selectivity with CO Faradaic efficiency nearly 100% and remarkable stability are demonstrated. • Unveiling the indispensible role of MgAl 2 O 4 in boosting CO 2 RR and suppressing HER. Single-atom catalysts show great potential in the electrochemical CO 2 reduction reaction (CO 2 RR), but face significant challenges in accelerating reaction kinetics. Herein, we develop a three-dimensional heterostructured MgAl 2 O 4 /Ni-N-C catalyst via a facile pyrolysis strategy, featuring abundant atomically dispersed Ni sites and ∼14 nm MgAl 2 O 4 nanoparticles. The MgAl 2 O 4 with rich oxygen vacancies is crucial for stabilizing Ni atoms and promoting CO 2 activation, thereby contributing to an excellent selectivity of nearly 100 % and good stability for CO production. The CO Faraday efficiency remains > 90 % within a large potential window (−0.57 to −0.97 V vs. RHE), and achieves the maximum of 98.7 % at −0.82 V. Theoretical calculations reveal that MgAl 2 O 4 introduction can modulate the electron structure of Ni atoms, and accelerate the formation of *COOH intermediate, thus boosting CO 2 RR performance. This research provides a novel approach for the design of high-efficiency single-atom catalysts for CO 2 conversion. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Separation & Purification Technology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.seppur.2024.130193
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      – Code: eng
        Text: English
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        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Oxygen vacancy
        Type: general
      – SubjectFull: Chemical kinetics
        Type: general
      – SubjectFull: Carbon dioxide
        Type: general
      – SubjectFull: Atoms
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      – SubjectFull: Spinel
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      – TitleFull: Engineering single-atomic Ni sites stabilized with adjacent spinel nanoparticles to boost CO2 electroreduction.
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            – D: 05
              M: 05
              Text: May2025:Part B
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              Y: 2025
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