In situ growth of Fe3O4 on montmorillonite surface and its removal of anionic pollutants. Issue 53 (12th October 2021)

• Record Type: Journal Article
• Authors: Wu, Limei; Liu, Jingwen; Liu, Yan; Huang, Ritong; Tang, Ning; Wang, Xiaolong; Hu, Ling
• Is Part Of: RSC advances. Volume 11:Issue 53(2021)
• Page Start: 33399
• Page End: 33407
• Publication Date: 2021-10-12
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/d1ra06318a
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : An environmentally functional material for the efficient removal of anionic pollutants in water, was prepared for our study. Abstract : An environmentally functional material for the efficient removal of anionic pollutants in water was prepared for our study. Montmorillonite (M) was modified by hydrochloric acid (HCl) and cetyltrimethylammonium bromide (CTAB). Fe3 O4 was grown in situ to prepare modified Fe3 O4 /montmorillonite (AC Fe3 O4 –Mt) composites. The number of hydroxyl sites on the surface of Mt and the surface tension were increased by HCl and CTAB modification, respectively, which enabled higher Fe3 O4 surface growth, promoting the multi-directional crystallisation of Fe3 O4 and improving reactivity. The XRD results show that Fe3 O4 grows on the surface of Mt and has good crystallinity and high purity, meaning that AC Fe3 O4 –Mt is more reactive than Fe3 O4 . When AC Fe3 O4 –Mt is used to remove anionic pollutants in water, the removal effect under the synergistic action of adsorption-redox is significantly improved, and the maximum removable quantities of Cr(vi ) and 2-4-dichlorophenol can reach 41.57 mg g −1 and 239.33 mg g −1, respectively. AC Fe3 O4 –Mt is a high efficiency and environmentally functional material with green environmental protection, which can be used in the field of sewage treatment.