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Awual, M. R.; Eldesoky, G. E.*; 矢板 毅; Naushad, M.*; 塩飽 秀啓; Alothman, Z. A.*; 鈴木 伸一
Chemical Engineering Journal, 279, p.639 - 647, 2015/11
被引用回数：251 パーセンタイル：99.3(Engineering, Environmental)A novel Schiff base ligand based nano-composite adsorbent (NCA) was prepared for the detection and removal of copper (Cu(II)) ions in wastewater samples. Upon the addition of Cu(II) ions to NCA at optimum conditions, the clear color was visible to the naked-eye in the detection system. This NCA exhibited an obvious color change from yellowish to dark green in the presence of Cu(II) ions in aqueous solution. The NCA could detect the Cu(II) ions over other foreign ions with high sensitivity and selectivity. For adsorption behaviour, influences several factors such as solution pH, contact time, concentration for Cu(II) ion adsorption was investigated by batch experiment in detail. The results showed that neutral solution pH was suitable to get optimum Cu(II) ions adsorption.
Awual, M. R.; Hasan, M. M.*; Shahat, A.*; Naushad, M.*; 塩飽 秀啓; 矢板 毅
Chemical Engineering Journal, 265, p.210 - 218, 2015/04
被引用回数：261 パーセンタイル：99.36(Engineering, Environmental)In this study, the organic ligand of 4-dodecyl-6-((4-(hexyloxy)phenyl)diazenyl) benzene-1,3-diol (DPDB) and mesoporous silica have been used to prepare the nano-composite adsorbent. The nano-composite adsorbent was fabricated by indirect immobilization of DPDB onto the mesoporous silica. The experimental data clarified that the Ce(III) was detected and adsorbed by the adsorbent at pH 2.50. The limit of detection for Ce(III) ions by the adsorbent was 0.12 microgram/L and the sorption capacity was 150.37 mg/g at optimum conditions. The proposed adsorbent allowed the sensitive, selective, easy to use, cost-effective, high efficiency, fast kinetics and stable capturing of Ce(III) ions even in the presence of diverse competing ions.
