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Room-Temperature Thermal Cycling Driven Pyro-Catalysis over g-C 3 N 4 /ZnO Composites for Efficient Dye Degradation.

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Title: Room-Temperature Thermal Cycling Driven Pyro-Catalysis over g-C 3 N 4 /ZnO Composites for Efficient Dye Degradation.
Authors: Cheng, Chen1 (AUTHOR), Chen, Biao1,2 (AUTHOR), Xu, Taosheng1,3 (AUTHOR), Li, Mingsi1 (AUTHOR), Zhu, Gangqiang1,2 (AUTHOR), Hao, Changchun1,3 (AUTHOR), Wu, Zheng2 (AUTHOR) wenwliu1212@163.com, Liu, Wenwen3 (AUTHOR), Jia, Yanmin1 (AUTHOR) ymjia@snnu.edu.cn
Source: Nanomaterials (2079-4991). Mar2026, Vol. 16 Issue 5, p289. 14p.
Subjects: Rhodamine B, Pyroelectricity, Composite materials, Wastewater treatment, Color removal (Sewage purification), Catalysis, Superoxides
Abstract: A highly efficient pyro-catalytic system based on a g-C3N4/ZnO composite has been developed for dye degradation under near-room-temperature thermal cycling (25–60 °C). This system integrates pyroelectric charge generation with electrochemical redox reactions. The g-C3N4/ZnO for pyro-catalytic Rhodamine B (RhB) dye decomposition with 95.6% efficiency in the dark, whereas pristine g-C3N4 reached only approximately 60.1% under identical conditions. The degradation mechanism is primarily driven by the in situ generation of superoxide (•O2−) and hydroxyl (•OH) radicals, as verified by radical quenching experiments. The formation of the composite facilitates the efficient spatial separation of pyroelectric-induced charges, thereby endowing g-C3N4/ZnO with a significantly enhanced pyro-catalytic performance compared to g-C3N4 alone. This study demonstrates the promising application of g-C3N4/ZnO as a high-performance pyro-catalyst under mild thermal conditions, offering a sustainable and light-independent strategy for wastewater treatment by utilizing ambient temperature fluctuations. [ABSTRACT FROM AUTHOR]
Copyright of Nanomaterials (2079-4991) is the property of MDPI 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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  Data: Room-Temperature Thermal Cycling Driven Pyro-Catalysis over g-C 3 N 4 /ZnO Composites for Efficient Dye Degradation.
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  Data: <searchLink fieldCode="AR" term="%22Cheng%2C+Chen%22">Cheng, Chen</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Biao%22">Chen, Biao</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xu%2C+Taosheng%22">Xu, Taosheng</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Mingsi%22">Li, Mingsi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhu%2C+Gangqiang%22">Zhu, Gangqiang</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hao%2C+Changchun%22">Hao, Changchun</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wu%2C+Zheng%22">Wu, Zheng</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> wenwliu1212@163.com</i><br /><searchLink fieldCode="AR" term="%22Liu%2C+Wenwen%22">Liu, Wenwen</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Jia%2C+Yanmin%22">Jia, Yanmin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> ymjia@snnu.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Nanomaterials+%282079-4991%29%22">Nanomaterials (2079-4991)</searchLink>. Mar2026, Vol. 16 Issue 5, p289. 14p.
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  Data: <searchLink fieldCode="DE" term="%22Rhodamine+B%22">Rhodamine B</searchLink><br /><searchLink fieldCode="DE" term="%22Pyroelectricity%22">Pyroelectricity</searchLink><br /><searchLink fieldCode="DE" term="%22Composite+materials%22">Composite materials</searchLink><br /><searchLink fieldCode="DE" term="%22Wastewater+treatment%22">Wastewater treatment</searchLink><br /><searchLink fieldCode="DE" term="%22Color+removal+%28Sewage+purification%29%22">Color removal (Sewage purification)</searchLink><br /><searchLink fieldCode="DE" term="%22Catalysis%22">Catalysis</searchLink><br /><searchLink fieldCode="DE" term="%22Superoxides%22">Superoxides</searchLink>
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  Label: Abstract
  Group: Ab
  Data: A highly efficient pyro-catalytic system based on a g-C3N4/ZnO composite has been developed for dye degradation under near-room-temperature thermal cycling (25–60 °C). This system integrates pyroelectric charge generation with electrochemical redox reactions. The g-C3N4/ZnO for pyro-catalytic Rhodamine B (RhB) dye decomposition with 95.6% efficiency in the dark, whereas pristine g-C3N4 reached only approximately 60.1% under identical conditions. The degradation mechanism is primarily driven by the in situ generation of superoxide (•O2−) and hydroxyl (•OH) radicals, as verified by radical quenching experiments. The formation of the composite facilitates the efficient spatial separation of pyroelectric-induced charges, thereby endowing g-C3N4/ZnO with a significantly enhanced pyro-catalytic performance compared to g-C3N4 alone. This study demonstrates the promising application of g-C3N4/ZnO as a high-performance pyro-catalyst under mild thermal conditions, offering a sustainable and light-independent strategy for wastewater treatment by utilizing ambient temperature fluctuations. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Nanomaterials (2079-4991) is the property of MDPI 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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        Value: 10.3390/nano16050289
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        Text: English
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        PageCount: 14
        StartPage: 289
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      – SubjectFull: Rhodamine B
        Type: general
      – SubjectFull: Pyroelectricity
        Type: general
      – SubjectFull: Composite materials
        Type: general
      – SubjectFull: Wastewater treatment
        Type: general
      – SubjectFull: Color removal (Sewage purification)
        Type: general
      – SubjectFull: Catalysis
        Type: general
      – SubjectFull: Superoxides
        Type: general
    Titles:
      – TitleFull: Room-Temperature Thermal Cycling Driven Pyro-Catalysis over g-C 3 N 4 /ZnO Composites for Efficient Dye Degradation.
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            NameFull: Cheng, Chen
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              M: 03
              Text: Mar2026
              Type: published
              Y: 2026
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