Binary metal oxide nanocomposites of Fe, Co and Mn with SnO2 for photodegradation of dyes, catalytic reduction of 4-nitrophenol and antimicrobial activities

Babu, Avis Tresa; Antony, Rosy

doi:10.1007/s11144-021-02125-2

Cited by 5 publications

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“…From this point of view, many studies report data concerning the hematite-based (HB) catalyst’s abilities to eliminate organic and inorganic pollutants from water. Hence, the HB systems are used alone or with oxidants such as ozone, hydrogen peroxide, or persulfate for organic pollutants elimination in water decontamination and disinfection processes [ 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 ]. Good results were obtained for eliminating various organic drugs such as ciprofloxacin [ 2 ], acetaminophen [ 3 ], diclofenac [ 4 ], and sulfasalazine [ 5 ] from wastewaters.…”

Section: Introductionmentioning

confidence: 99%

“…Good results were obtained for eliminating various organic drugs such as ciprofloxacin [ 2 ], acetaminophen [ 3 ], diclofenac [ 4 ], and sulfasalazine [ 5 ] from wastewaters. Moreover, a wide range of recalcitrant organic chemical pollutants such as benzene [ 6 ], toluene [ 7 ], phenols [ 6 , 8 ], rhodamine B [ 9 , 10 , 11 ], methylene blue [ 11 , 12 ], and bromophenol blue dyes [ 13 ] was also efficiently removed from wastewater using such catalysts.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and Characterization of Hematite-Based Nanocomposites as Promising Catalysts for Indigo Carmine Oxidation

et al. 2022

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The hematite-based nanomaterials are involved in several catalytic organic and inorganic processes, including water decontamination from organic pollutants. In order to develop such species, a series of bimetallic hematite-based nanocomposites were obtained by some goethite composites-controlled calcination. Their composition consists of various phases such as α-FeOOH, α-Fe2O3 or γ-Fe2O3 combined with amorphous (Mn2O3, Co3O4, NiO, ZnO) or crystalline (CuO) oxides of the second transition ion from the structure. The component dimensions, either in the 10–30 or in the 100–200 nm range, together with the quasi-spherical or nanorod-like shapes, were provided by Mössbauer spectroscopy and powder X-ray diffraction as well as transmission electron microscopy data. The textural characterization showed a decrease in the specific area of the hematite-based nanocomposites compared with corresponding goethites, with the pore volume ranging between 0.219 and 0.278 cm3g−1. The best catalytic activity concerning indigo carmine removal from water in hydrogen peroxide presence was exhibited by a copper-containing hematite-based nanocomposite sample that reached a dye removal extent of over 99%, which correlates with both the base/acid site ratio and pore size. Moreover, Cu-hbnc preserves its catalytic activity even after four recyclings, when it still reached a dye removal extent higher than 90%.

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