Recent progresses in graphene-based (photo)catalysts for reduction of nitro compounds

Efficient reduction of nitro compounds and domino preparation of 1-substituted-1H-1,2,3,4-tetrazoles by Pd(ii)-polysalophen coated magnetite NPs as a robust versatile nanocomposite

“…[1][2][3] Moreover, the preparation of azo compounds, isocyanates, amides, imines, and diazonium salts, are some of the prominent uses of amines in organic synthesis. 4,5 The complete reduction of nitro compounds to the corresponding amines is one of the most popular and common processes in the petrochemical, pharmaceutical, chemical and other industries. 1 Various catalytic systems have been reported for the complete reduction of nitro compounds to amines, and recently we could point to: Ag-rGO/g-C 3 N 4 /visible light, 6 human hair, 4 Ni 2 BH 2 , 7 Fe 3 O 4 -MWCNTs@PEI-Ag, 2 Fe/TRGO, 1 CuFe 2 O 4 / NaBH 4 , 8 and Zn powder/CuSO 4 .…”

“…studied recent methodologies in graphene-based photocatalysts for nitro reduction in a review paper. 5 Mahmoudi et al recently developed a three-functional redox catalytic system bearing a TEMPO/Co(III)-porphyrin/Ni(II) complex for the efficient reduction of nitro compounds as well as its direct transformation to 1-substituted-1H-1,2,3,4-tetrazoles. 9 Amines are one of the most valuable precursors in organic synthesis, especially MCRs (multicomponent reactions), 10 and one of these reactions is the formation of tetrazole derivatives.…”

Microwave-Assisted Synthesis of CuO Nanoparticles Using Cordia africana Lam. Leaf Extract for 4-Nitrophenol Reduction

“…Coupling metallic NPs with suitable support material is one of the mechanisms employed to overcome limitations due to agglomeration. Several reports pointed out that the dispersibility and stability of metallic nanostructured materials could be improved by coupling metallic NPs with support materials such as graphene [24], bentonite [25], sodium borosilicate [11], graphene oxide/ manganese dioxide nanocomposite [26], and magnetic biodegradable microcapsules [27]. Recently, there are increasing interest in using nonnoble metal oxide semiconductor catalysts as a low-cost alternative to the preciousmetal-based catalysts for the reduction of 4-NP [28].…”

Greener route for microwave enhanced syntheses of bioactive 1,5‐benzodiazepines using heterogeneous calcium ferrite/graphene oxide nanocomposite as a novel and sustainable catalyst

“…The oxygen functionalities on GO serve as anchoring sites for chemical functionalization and immobilization of inorganic complexes and nanoparticles, etc . In the recent past, several nanocomposites of graphene oxide have been prepared using diverse synthetic strategies such as biological methods, hydrothermal methods, electrochemical processes, reduction techniques and ex situ routes . These methods effectively aid in immobilization of nanoparticles on graphene oxide or reduced graphene oxide, which in turn result in development of hybrid nanomaterials that exhibit efficient catalytic activities owing to synergistic effects of nanoparticles and graphene oxide.…”