Regulation of Thin-Layered g-C3N4 for Efficient Persulfate Photocatalysis of Ibuprofen Contaminated Groundwater
The rapid and effective removal of pharmaceuticals and personal care products (PPCPs) from groundwater is challenging. In this paper, porous cyano group-rich g-C3N4 catalysts were prepared by urea (U) and a KOH-assisted thermal polymerization strategy. The thickness, active sites, and pores of g-C3N4 were successfully modulated by urea and KOH-assisted thermal polymerization. In addition, the charge separation efficiency of g-C3N4 was effectively improved by the above methods. We combine the g-C3N4 photocatalyst with peroxymonosulfate (PMS) to achieve the efficient degradation performance of ibuprofen. Meanwhile, we also explored the reaction mechanism of g-C3N4 in the photocatalytically coupled persulfate system, which illustrated the active roles of singlet oxygen and holes in the system in degrading pollutants. Our work demonstrates that the photocatalytically coupled persulfate system is an advanced technology necessary for the deep treatment of PPCPs in groundwater and suggests a feasible strategy for catalyst modulation.
Authors
- Shuquan Liang (ORCID: https://orcid.org/0000-0001-9227-5498)
- Ke Zeng (ORCID: https://orcid.org/0000-0001-5894-1303)
- How Yong Ng
- Sizheng Xiong (ORCID: https://orcid.org/0000-0002-0219-0480)
- Guiyang Yan (ORCID: https://orcid.org/0000-0001-6530-0790)
- Zuqiang Huang (ORCID: https://orcid.org/0000-0003-0727-8016)
- Jun Liu (ORCID: https://orcid.org/0000-0001-6951-8826)
- Jie Li (ORCID: https://orcid.org/0000-0002-3416-7787)
- Yongping Li (ORCID: https://orcid.org/0000-0002-3253-4088)
- Yining Zhang (ORCID: https://orcid.org/0000-0002-3153-8407)
- Yanbin Huang
- Yunchuan Yang
- Junjie Qi (ORCID: https://orcid.org/0000-0003-0659-6215)
Institutions
- Hebei University of Engineering (CN)
- Handan College (CN)
- Harbin Engineering University (CN)
- Beijing Normal University (CN)
- China National Petroleum Corporation (China) (CN)
Publication Details
- Journal
- Sustainability
- Published
- 2025-03-22
- DOI
- https://doi.org/10.3390/su17072831
- Citations
- 1
- Primary Topic
- Advanced Photocatalysis Techniques
- Type
- article
- Field-Weighted Citation Impact
- 0.36
Funders
- National Natural Science Foundation of China
- National Key Research and Development Program of China
- Fundamental Research Funds for the Central Universities
- Basic and Applied Basic Research Foundation of Guangdong Province