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Photocatalytic removal of 2-chlorophenol from water by using waste eggshell-derived calcium ferrite.
RSC Adv
June 2023
Center of Sustainable Energy and Green Materials and Department of Chemistry, Faculty of Science, Mahidol University 999 Phuttamonthon Sai 4 Rd, Salaya Nakhon Pathom 73170 Thailand
Article Synopsis
- A novel method was developed to recycle low-value eggshell waste by creating a CaFeO semiconductor with a narrow band gap (2.81 eV) through hydrothermal treatment in ferric salt solutions, optimizing the Fe loading to 30 wt%.
- The resulting CaFeO material acted as an effective photocatalyst, achieving an 86.1% removal of the herbicide 2-chlorophenol from water after 180 minutes of UV-visible light exposure, with a reuse efficiency of 70.5% even in subsequent cycles.
- The study demonstrated that using eggshells in creating CaFeO not only helps in environmental remediation by degrading pollutants but also exemplifies the advantages of recycling materials in science.