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Self-assembled FeS-Clostridium ljungdahlii biohybrid boost chemicals production in microbial electrosynthesis.

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Title: Self-assembled FeS-Clostridium ljungdahlii biohybrid boost chemicals production in microbial electrosynthesis.
Authors: Qiu, Yijing1,2 (AUTHOR), Cheng, Caiyun1,2 (AUTHOR), Song, Tianshun1,2 (AUTHOR) tshsong@njtech.edu.cn, Li, Xiang Ling1,2 (AUTHOR), Xie, Jingjing1,2,3 (AUTHOR) xiej@njtech.edu.cn
Source: Bioresource Technology. Aug2026, Vol. 453, pN.PAG-N.PAG. 1p.
Subjects: Clostridium, Carbon dioxide reduction, Nanoparticles, Chemical products manufacturing, Bioelectronics, Oxidation-reduction reaction, Electrocatalysis, Carbon fixation
Abstract: [Display omitted] • A biologically self-assembled FeS accelerate electron transfer for C. ljungdahlii. • Acetate, butyrate, and 2,3-butanediol yields increased 10.5-, 2.63-, and 4.23-fold. • 1.01 g L−1 d−1 acetate yield was obtained in MES with C. ljungdahlii -CdS biohybrid. • The biohybrid drastically raises DET contribution to 78% • The genes related to carbon fixation, electron transfer and energy conservation were activated. The low extracellular electron transfer rate of Clostridium ljungdahlii limits its capacity to acquire reducing power from the electrode for CO 2 reduction and chemical synthesis. Herein, we employ a biologically self-assembled FeS construct to accelerate electron transfer for C. ljungdahlii , which enhances CO 2 -to-chemical conversion in microbial electrosynthesis (MES). The synthesized FeS nanoparticles were localized to the cell surface and intracellular space of C. ljungdahlii , thereby establishing a contiguous, bio-derived conductive network across the cellular boundary. The enhanced electron uptake capability drove a dramatic improvement in CO 2 reduction, increasing the yields of acetate, butyrate, and 2,3-butanediol by up to 10.5‑fold, 2.63‑fold, and 4.23‑fold, respectively. The biohybrid system achieved an impressive acetate yield of 1.01 g L−1 d−1 in long-term operation. The enhancement in chemicals synthesis within the Clostridium ljungdahlii -FeS biohybrid is attributed to the increased NADH/NAD+ ratio and electron transfer rate as well as the up-regulation of genes involved in carbon fixation, electron transfer, and energy conversion. This biohybrid structure dramatically elevated the direct electron transfer ratio of C. ljungdahlii from 18% to 78%, thereby reducing reliance on dissolved H 2. This work provides an efficient, light-independent strategy for augmenting CO 2 -to-chemical conversion via enhanced direct electron transfer in MES. [ABSTRACT FROM AUTHOR]
Copyright of Bioresource 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.)
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  Label: Title
  Group: Ti
  Data: Self-assembled FeS-Clostridium ljungdahlii biohybrid boost chemicals production in microbial electrosynthesis.
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  Data: <searchLink fieldCode="AR" term="%22Qiu%2C+Yijing%22">Qiu, Yijing</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cheng%2C+Caiyun%22">Cheng, Caiyun</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Song%2C+Tianshun%22">Song, Tianshun</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> tshsong@njtech.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Xiang+Ling%22">Li, Xiang Ling</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xie%2C+Jingjing%22">Xie, Jingjing</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<i> xiej@njtech.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Bioresource+Technology%22">Bioresource Technology</searchLink>. Aug2026, Vol. 453, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Clostridium%22">Clostridium</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+dioxide+reduction%22">Carbon dioxide reduction</searchLink><br /><searchLink fieldCode="DE" term="%22Nanoparticles%22">Nanoparticles</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+products+manufacturing%22">Chemical products manufacturing</searchLink><br /><searchLink fieldCode="DE" term="%22Bioelectronics%22">Bioelectronics</searchLink><br /><searchLink fieldCode="DE" term="%22Oxidation-reduction+reaction%22">Oxidation-reduction reaction</searchLink><br /><searchLink fieldCode="DE" term="%22Electrocatalysis%22">Electrocatalysis</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+fixation%22">Carbon fixation</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: [Display omitted] • A biologically self-assembled FeS accelerate electron transfer for C. ljungdahlii. • Acetate, butyrate, and 2,3-butanediol yields increased 10.5-, 2.63-, and 4.23-fold. • 1.01 g L−1 d−1 acetate yield was obtained in MES with C. ljungdahlii -CdS biohybrid. • The biohybrid drastically raises DET contribution to 78% • The genes related to carbon fixation, electron transfer and energy conservation were activated. The low extracellular electron transfer rate of Clostridium ljungdahlii limits its capacity to acquire reducing power from the electrode for CO 2 reduction and chemical synthesis. Herein, we employ a biologically self-assembled FeS construct to accelerate electron transfer for C. ljungdahlii , which enhances CO 2 -to-chemical conversion in microbial electrosynthesis (MES). The synthesized FeS nanoparticles were localized to the cell surface and intracellular space of C. ljungdahlii , thereby establishing a contiguous, bio-derived conductive network across the cellular boundary. The enhanced electron uptake capability drove a dramatic improvement in CO 2 reduction, increasing the yields of acetate, butyrate, and 2,3-butanediol by up to 10.5‑fold, 2.63‑fold, and 4.23‑fold, respectively. The biohybrid system achieved an impressive acetate yield of 1.01 g L−1 d−1 in long-term operation. The enhancement in chemicals synthesis within the Clostridium ljungdahlii -FeS biohybrid is attributed to the increased NADH/NAD+ ratio and electron transfer rate as well as the up-regulation of genes involved in carbon fixation, electron transfer, and energy conversion. This biohybrid structure dramatically elevated the direct electron transfer ratio of C. ljungdahlii from 18% to 78%, thereby reducing reliance on dissolved H 2. This work provides an efficient, light-independent strategy for augmenting CO 2 -to-chemical conversion via enhanced direct electron transfer in MES. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Bioresource 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:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.biortech.2026.134658
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Clostridium
        Type: general
      – SubjectFull: Carbon dioxide reduction
        Type: general
      – SubjectFull: Nanoparticles
        Type: general
      – SubjectFull: Chemical products manufacturing
        Type: general
      – SubjectFull: Bioelectronics
        Type: general
      – SubjectFull: Oxidation-reduction reaction
        Type: general
      – SubjectFull: Electrocatalysis
        Type: general
      – SubjectFull: Carbon fixation
        Type: general
    Titles:
      – TitleFull: Self-assembled FeS-Clostridium ljungdahlii biohybrid boost chemicals production in microbial electrosynthesis.
        Type: main
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          Name:
            NameFull: Qiu, Yijing
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            NameFull: Cheng, Caiyun
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            NameFull: Song, Tianshun
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            NameFull: Li, Xiang Ling
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            NameFull: Xie, Jingjing
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          Dates:
            – D: 01
              M: 08
              Text: Aug2026
              Type: published
              Y: 2026
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              Value: 09608524
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              Value: 453
          Titles:
            – TitleFull: Bioresource Technology
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