Enhancing electron-hole pair generation by Ti3C2 MXene-derived TiO2 integrated with g-C3N4 heterojunction for excellent photocatalytic H2 production and CO2 reduction
文献类型： 外文期刊
作者： Asghar, Zeeshan 1 ; Habib, Haris 3 ; Bilal, Muhammad 1 ; Rehman, Zia Ur 1 ; Butt, Faheem K. 4 ; Zheng, Kewang 5 ; Liu, Yuxue 6 ; Lin, Hui 6 ; Zhang, Yongcai 7 ; Wang, Xiaozhi 1 ; Hou, Jianhua 1 ;
作者机构： 1.Yangzhou Univ, Sch Environm Sci & Engn, Yangzhou 225127, Peoples R China
2.Yangzhou Univ, Coll Phys Sci & Technol, Yangzhou 225009, Peoples R China
3.Henan Univ, Sch Future Technol, Henan Key Lab Photovolta Mat, Kaifeng 475004, Peoples R China
4.Univ Educ, Dept Phys, Div Sci & Technol, Lahore 54000, Pakistan
5.Hubei Engn Univ, Sch Chem & Mat Sci, Xiaogan 432000, Hubei, Peoples R China
6.Zhejiang Acad Agr Sci, Inst Environm Resource Soil & Fertilizer, State Key Lab Managing Biot & Chem Threats Qual &, Hangzhou 310021, Peoples R China
7.Yangzhou Univ, Sch Chem & Chem Engn, Yangzhou 225009, Peoples R China
关键词： Heterojunction; Enhancing electron-hole; Photocatalysis; Graphitic carbon nitride
期刊名称：INTERNATIONAL JOURNAL OF HYDROGEN ENERGY （ 影响因子：8.3； 五年影响因子：7.7 ）
ISSN： 0360-3199
年卷期： 2025 年 149 卷
页码：
收录情况： SCI
摘要： Titanium carbide (Ti3C2), a member of the MXene family, is emerging as an innovative photocatalyst developed for environmental sustainability and clean energy applications. In this work, we engineer a functional heterojunction incorporating 2D g-C3N4 nanosheets with Ti3C2 (MXene) was optimized to act as a precursor for developing TiO2 nanosheets, employing a simple, economical approach to enhance photocatalytic performance. The refined g-C3N4/TiO2 photocatalyst demonstrates a favorable band gap of 2.85 eV and an effective porous structure with a pore width of 25.4 nm, significantly improving visible light absorbance. Additionally, the presence of nitrogen defects significantly inhibits charge carrier recombination. The 2D/2D layered structure enhances electron-hole pair generation, accelerates charge transfer, and improves the materials redox functionality. The multifunctional photocatalyst shows remarkable effectiveness, achieving 99.2 % degradation of RhB within 120 min, 98.7 % degradation of TC within 90 min, a CO evolution rate of 120.6 mu mol g-1 h-1 and an H2 rate of 4503 mu mol g-1 h-1. Additionally, Computational analysis demonstrates reduced recombination rates, uniform charge distribution, and an adjustable band gap, establishing the photocatalyst as an effective solution for eco-friendly energy and environmental sustainability. This research introduces a novel approach to developing efficient nanostructures for enhanced photocatalytic performance.
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