Value-added synthesized acidic polymer nanocomposite with waste chicken eggshell: A novel metal-free and heterogeneous catalyst for Mannich and hantzsch cascade reactions from alcohols

Ag/GO/Fe3O4/γ-Fe2O3 Nanocomposite for Green-Light-Driven Photocatalytic Oxidation of 5-Hydroxymethylfurfural to 5-Hydroxymethyl-2-furancarboxylic Acid

“…Unfortunately, iron nanoparticles are easily oxidized in contact with air or moisture.bibref rid="ref3"/>,, γ-Fe 2 O 3 is of high scientific and technological importance. It has been introduced as the most stable iron oxide in environmental conditions with nontoxic, resistant to oxidation, low-cost, and environmentally friendly properties. , As the γ-Fe 2 O 3 particles become nanosized, their excellent magnetic properties are also greatly improved. Our studies have shown that Fe 3 O 4 /γ-Fe 2 O 3 nanoparticles show better magnetic properties than Fe 3 O 4 and γ-Fe 2 O 3 nanoparticles separately under an external magnetic field. , Despite recent advances in the field, the interface between metal oxide and graphene remains unclear due to the diverse interaction mechanisms between nanoparticles and the various sites or functional groups of graphene, involving covalent and noncovalent bonds, which require further investigation in chemical reactions …”

Advances in the greener synthesis of chromopyrimidine derivatives by a multicomponent tandem oxidation process

“…Material or sustainable chemistry focuses on the developiment of safe materials with catalytic properties 47 – 49 . Catalysts play a crucial role in lowering the activation energy and increasing the rate of chemical reactions 50 , 51 . Green chemistry emphasizes the reusability and sustainability of catalytic materials, highlighting the need for environmentally friendly, sustainable, and economically effective catalytic systems.…”

Microfluidic Fabrication of Monodisperse and Recyclable TiO2-Poly(ethylene glycol) Diacrylate Hybrid Microgels for Removal of Methylene Blue from Aqueous Medium

“…On the other hand, the use of naked TiO 2 NPs for photocatalytic degradation of MB is associated with some issues, such as the high aggregation (agglomeration) tendency of TiO 2 NPs in aqueous solutions which results in reduced light absorbance and photocatalytic activity, and challenging separation from the reaction mixture after photocatalysis. Both problems can be addressed successfully by designing a hybrid material composed of polymeric microparticles and TiO 2 NPs. − Consequently, the use of inorganic–organic hybrid materials in adsorption, catalysis, and photocatalysis has become the subject of increasing interest. − For example, Sun et al developed an amino-functionalized TiO 2 surface molecularly imprinted polymeric system using sodium lignosulfonate as a functional monomer for highly selective removal of MB via adsorption and photocatalysis methodologies. Idris et al reported a TiO 2 /poly­(vinyl alcohol)/cork hybrid material for scavenging of MB using adsorption and photocatalysis strategies.…”