Preparation of a magnetically separable CoFe₂O₄supported Ag nanocatalyst and its catalytic reaction towards the decolorization of a variety of dyes

Abstract

CoFe2O4supported Ag nanoparticles were investigated as a catalyst for the decolorization of 4-nitrophenol, Congo red, rhodamine B and dye mixtures.

Dual-Purpose CuFe2O4-rGO-Based Nanocomposite for Asymmetric Flexible Supercapacitors and Catalytic Reduction of Nitroaromatic Derivatives

“…Traces of nitroaromatic compounds are commonly present in the wastewater discharged from the industries producing pesticides, herbicides, paint, wood preservatives, dyes and pigments, etc., , and are causing harm to both humans as well as other living species . Moreover, most of the nitroanilines and nitrophenols are neurotoxic and can damage the cardiovascular system. , Several researchers have developed different strategies to remove nitroaromatic compounds from the wastewater such as catalytic moist air oxidation, catalytic reduction, photocatalytic degradation, electrolytic reduction, etc. , Catalytic reduction of organic nitro compounds to their corresponding amino products is a very exciting methodology because the resulting products, i.e., the aromatic amino compounds, are industrially important intermediates in the manufacture of lubricants, corrosion inhibitors, analgesic drugs, polymers, etc. − For this purpose, the reduction of nitroaromatic compounds in the presence of NaBH 4 in an aqueous medium is one of the widely used methods due to its simplicity, high efficiency, cost-effectiveness, and eco-friendliness. ,− …”

Structural Changes of Binary/Ternary Spinel Oxides During Ethanol Anaerobic Decomposition

“…Besides the traditional applications, manganese ferrite showed good performance as an adsorbent for the removal of pollutants such as Congo red, Cr VI , Pb II , and azo dye Acid Red B (ARB) from water, it has also been successfully used as a material for “pure hydrogen” production in low‐temperature water splitting thermochemical cycles . CoFe 2 O 4 spinel oxide is known as an efficient catalyst for aromatic alkylation/decomposition, the Knoevenagel condensation, biodiesel production through transesterification of vegetable oil, reactions for the decolorization of a variety of dyes, as well as for selective oxidation reactions of cyclohexane, styrene, alcohols, and olefins . Whereas, CuFe 2 O 4 ferrite is a prominent catalyst in the decomposition/abatement of NO x and CO 2 , for Friedel–Crafts acylation, the water–gas shift reaction, and hydrogen production through dimethyl ether steam reforming, etc.…”

Synthesis of a Ni0.8Zn0.2Fe2O4–RGO nanocomposite: an excellent magnetically separable catalyst for dye degradation and microwave absorber

“…In case of degradation or decolorization of dyes in aqueous medium, reduction of dyes by using heterogeneous catalysts in presence of reducing agents (such as NaBH 4 ) is a very popular approach. 9,10,[27][28][29] In this reaction metal nanoparticles (e.g. Pt, Au, Ag, Cu, etc.)…”