Abstract
In this study, the co-effect of clay mineral-based photocatalyst and humic acid on the photodegradation of dye was revealed for the first time. The clay mineral-based photocatalyst, maifanite/g-C3N4, was prepared using the co-calcining method. The physical and chemical properties of the maifanite/g-C3N4 photocatalysts with various ratios were characterized by multiple characterization methods, including SEM, XPS, BET, UV-Vis, FTIR, contact angle, and XRD. The respective degradation experiment of humic acid and RhB was performed using maifanite/g-C3N4 photocatalysts. The degradation process of mixture solution of humic acid and RhB was measured using EEM and UV-vis. The result indicates that in the presence of humic acid, low ratio of maifanite/g-C3N4 inhibits the production of by-products derived from the interaction of humic acid and the degradation of RhB. However, high ratio of maifanite/g-C3N4 is not conducive to the degradation of RhB. The ratio of 1:3 for maifanite/g-C3N4 is optimal for the photodegradation of RhB in the presence of humic acid. This article provides a new perspective to develop the co-effect of clay mineral and humic acid in the photodegradation of organic pollutant.
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Acknowledgments
The authors sincerely thank the grant funded by the Study on Comprehensive Control of Rocky Desertification and Ecological Service Function Improvement in Karst Peaks (No. 2016YFC0502402). This work also was financially supported by the National Natural Science Foundation of China (No. 51709254) and Youth Innovation Promotion Association, Chinese Academy of Sciences (No. 2020335).
Funding
The Study on Comprehensive Control of Rocky Desertification and Ecological Service Function Improvement in Karst Peaks (No. 2016YFC0502402). National Natural Science Foundation of China (No. 51709254), and Youth Innovation Promotion Association, Chinese Academy of Sciences (No. 2020335).
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Investigation, software, writing—original draft, and writing—review and editing: Hang Yang; investigation, software, writing— original draft: Yi Zhang; funding acquisition, supervision, conceiving and designing the methodology, writing—review, and editing: Shibin Xia.
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Yang, H., Zhang, Y. & Xia, S. Study on the co-effect of maifanite-based photocatalyst and humic acid in the photodegradation of organic pollutant. Environ Sci Pollut Res 28, 15731–15742 (2021). https://doi.org/10.1007/s11356-020-11603-4
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DOI: https://doi.org/10.1007/s11356-020-11603-4