Development and Characterization of Novel Mn–Fe–Sn Ternary Nanoparticle by Sol–Gel Technique

Low-temperature selective catalytic reduction of NO with NH3 over an FeOx/β-MnO2 composite

“…The wavelength below 1000 cm −1 was usually due to the interatomic vibration caused by the hydroxides and oxides of nanoparticles. 74 The absorption peak within 470 cm −1 and 730 cm −1 could be attributed to the presence of M–O nanostructures and Fe–O nanostructures, respectively. 75,76 In particular, 466 cm −1 could belong to the O–Mn–O bond, 76 the wavelength of 1630 cm −1 represented the presence of adsorbed water, and the absorption peak of 3600 cm −1 could be attributed to Brønsted acid 2 site.…”

Hexavalent chromium removal from aqueous medium by ternary nanoadsorbent: A study of kinetics, equilibrium, and thermodynamic mechanism

“…This research used the sol-gel method to prepare the ternary Fe 2 O 3 -MnO 2 -SnO 2 nanoadsorbent [29]. The procedure is as follows: "First, potassium permanganate (KMnO 4 ) and iron chloride (FeCl 2 ) were dissolved separately in 100 mL of deionized water.…”

“…This gel was then added dropwise to the iron and manganese gel under magnetic stirring for 1 hour. A gel-like precipitate of hydroxide was thus developed and was then put in the mother liquor for 24 hours' [29]. The solution was then allowed to stabilize at room temperature for 24 hours and then it was filtrated using Whatman filter papers (cat no 1001 110).…”