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    • Excellent organic dye adsorption capacity and recyclability of hydrothermally synthesized α-Fe2O3 nanoplates and nanorices
    Authors: Das, Raja;  Advisor: Pham, Kim Ngoc; Mac, Trung Kien; Nguyen, Huu Tuan; Do, Thanh Viet; Tran, Dang Thanh; Pham, Van Vinh; Phan, Bach Thang; Duong, Anh Tuan;  Co-Author: - (2021)

    α-Fe2O3 and Fe3O4 nanoplates and nanorices were synthesized by hydrothermal reaction and used for organic pollutant adsorption and removal studies. The effect of size and morphology of α-Fe2O3 and Fe3O4 nanoplates and nanorices on the dye adsorption efficiency were investigated systematically. The adsorption studies showed a good selectivity and high adsorption capacity (~93%) of the α-Fe2O3 nanoplates towards congo red (C.R.) dye, due to the formation of hydrogen bonding between amine group (─ NH2) of C.R. and surface carboxylate group (─ COOH), and adsorbed ─ OH groups of α-Fe2O3 nanoplates. The α-Fe2O3 nanoplates also showed excellent recyclability with negligible loss of the adsor...