Electrostatically Assembled Cu<sub>2</sub>O/TiO<sub>2</sub> Nanocomposite with Type-II Heterojunctions for Enhanced Photocatalytic CO<sub>2</sub> Methanation
A Cu2O/TiO2 nanocomposite type-II heterojunction was constructed through electrostatic self-assembly, achieving a visible-light-driven CH4 production rate of 34.13 μmol g–1 h–1, which is 43.85 and 2.39 times higher than that of Cu2O nanocubes and TiO2 nanoparticles, respectively. The enhanced activity can be attributed to several synergistic effects: (1) an increased surface area of 71.2 m2 g−1 for CO2 adsorption, (2) a broadened absorption spectrum in the visible light range, and (3) efficient interfacial electron transfer that suppresses recombination. This energy-efficient synthesis method circumvents the need for high-temperature calcination, thereby providing a scalable solution for industrial CO2 photoreduction.
Authors
- Guobing Mao (ORCID: https://orcid.org/0000-0003-1472-3165)
- Qi Liu (ORCID: https://orcid.org/0000-0002-9614-6228)
- Jiali Tang (ORCID: https://orcid.org/0009-0009-6466-2074)
- Lipeng Wang (ORCID: https://orcid.org/0009-0004-0203-9053)
- Rui Wang (ORCID: https://orcid.org/0009-0005-9507-8699)
- Waqar Younas (ORCID: https://orcid.org/0009-0007-0582-8041)
- J Y Huang
- Tiantian Zong
Institutions
- Anhui Polytechnic University (CN)
Publication Details
- Journal
- ACS Applied Nano Materials
- Published
- 2025-05-30
- DOI
- https://doi.org/10.1021/acsanm.5c01878
- Primary Topic
- Advanced Photocatalysis Techniques
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Anhui Provincial Department of Science and Technology
- Anhui Provincial Department of Education