Study on the co-effect of maifanite-based photocatalyst and humic acid in the photodegradation of organic pollutant
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RESEARCH ARTICLE
Study on the co-effect of maifanite-based photocatalyst and humic acid in the photodegradation of organic pollutant Hang Yang 1 & Yi Zhang 2 & Shibin Xia 1 Received: 20 September 2020 / Accepted: 9 November 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
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 coeffect of clay mineral and humic acid in the photodegradation of organic pollutant. Keywords Maifanite/g-C3N4 . Humic acid . RhB . Photodegradation . Co-effect
Introduction Rhodamine B (RhB) is a kind of xanthene dye, which is harmful to human beings and the environment (Zhu et al. 2019). Therefore, versatile physical and biochemical methods have been developed to remove RhB, including adsorption, flocculation, membrane filtration, microbial treatment, advanced oxidation, etc. (Bai et al. 2018; Guo et al. 2019; Shi et al. 2019; Yang et al. 2020c; Zhang et al. 2020). Photocatalysis treatment has received high profile attributed to the advantages of high degradation efficiency, no secondary pollution, and no additional energy (Yao et al. 2020; Ye et al. Responsible Editor: Sami Rtimi * Yi Zhang [email protected] * Shibin Xia [email protected] 1
School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China
2
State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, People’s Republic of China
2018). In the previous study, we have testified the good photocatalysis property of non-metallic photocatalyst gC3N4 for RhB (Yang et al. 2020a). However, in the practical water body, the photodegradation of RhB is influenced by many factors and even takes place the interaction with surrounding. Therefore, the effect derived from complex environment should be referred. Many studies have indicated that the natural organic matter (NOM) in water matrix may lead to the competition with organic pollutants and influence t
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