Preparation of nanospinels NiMnxFe2−xO4 using sol–gel method and their applications on removal of azo dye from aqueous solutions

Synthesis of NiFe2O4nanoparticles for removal of anionic dyes from aqueous solution

“…In recent years, spinel ferrites with the general formula MFe 2 O 4 (M = Fe, Co, Cu, Mn, Ni, etc.) have received much research attention, owing to both broad practical applications in several important technological fields such as ferrofluids, magnetic drug delivery, magnetic high-density information storage, and degradation of organic pollutants such as dye and halogenated derivatives in wastewater treatment [15,16].…”

Na0.5Li0.5CoO2 nanopowders: Facile synthesis, characterization and their application for the removal of methylene blue dye from aqueous solution

“…Different amounts of NPs (0.01-0.04 g) were added into the reactor containing 10 ml aqueous solution of MBD (50 mg L À1 ) and the experiments were done at different temperatures (15, 25, 35 and 45°C), and pH (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11). Sample was taken out and centrifuged for analysis by a UV-vis spectroscopy at different time intervals.…”

“…Several articles have investigated the effectiveness of spinel [9,10] and perovskite [11,12] oxides as adsorbent for removal of water-soluble dyes. Yazdanbakhsh et al [13] evaluated the effectiveness of LiCo 0.5 Fe 0.5 O 2 powder as an adsorbent/catalyst material for the removal of Reactive blue 5 (RB5).…”

Nano-sized NiLa2O4 spinel–NaBH4-mediated reduction of imines to secondary amines

“…Spinels are prepared using various methods, including hydrothermal synthesis [20], modified oxidation processes [21], forced hydrolysis [22], and ball-milling [23], solid-state [24], and microemulsion methods [25]. Sol-gel methods are preferred because they are effective and convenient techniques and use less energy and materials [26].…”