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. |
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| 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] |
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| Database: | Engineering Source |
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| 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] |
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| ISSN: | 20794991 |
| DOI: | 10.3390/nano16050289 |
