Immobilization of Gd(III) complex on Fe3O4: A novel and recyclable catalyst for synthesis of tetrazole and S–S coupling

Biosynthesis of CuO nanoparticles using aqueous extract of herbal tea (Stachys Lavandulifolia) flowers and evaluation of its catalytic activity

“…The nanometric dimension, unique shape and large surface area has been beneficial in their distinctive catalytic properties. Further surface modifications over these materials by post-functionalization approach introduces unique physical properties [10][11][12][13] . A number of chemical and physical approaches are being encroached for the fabrication of NPs following top down or bottom up approach 14,15 .…”

Nanomaterial catalyzed green synthesis of tetrazoles and its derivatives: a review on recent advancements

“…The benecial features associated with the protocol were easy separation of catalyst, high catalytic activity, chemical and physical stability, easy workups, short reactiontime and good yields. 46 An efficient Fe 3 O 4 @tryptophan@Ni (Table 2, entry 7) nanocatalyst was prepared by immobilization of Ni metal on tryptophane coated Fe 3 O 4 nanoparticles as depicted in Scheme 3. The prepared Fe 3 O 4 @tryptophan@Ni was characterized using various spectroscopic techniques.…”

“…The beneficial features associated with the protocol were easy separation of catalyst, high catalytic activity, chemical and physical stability, easy workups, short reaction-time and good yields. 46 …”

Synthesis of palladated magnetic nanoparticle (Pd@Fe3O4/AMOCAA) as an efficient and heterogeneous catalyst for promoting Suzuki and Sonogashira cross‐coupling reactions

“…The original Suzuki and Sonogashira reactions were performed in the presence of,active homogeneous catalysts which later extensively developed converted also via Pd‐ heterogenized catalyst by being immobilized over various supports such carbon nanotubes, magnetic nanoparticles, molecular sieves (SBA‐15 and MCM‐41), metal oxides, ionic liquids and various polymers . Among these supports, magnetic nanoparticles have drawn sheer attention in last decade due to their versatile properties like high thermal and mechanical stability, large internal surface area, ease of separation using a magnet bar and high concentration of surface OH groups for secondary functionalization …”

“…[29][30][31][32][33][34] Among these supports, magnetic nanoparticles have drawn sheer attention in last decade due to their versatile properties like high thermal and mechanical stability, large internal surface area, ease of separation using a magnet bar and high concentration of surface OH groups for secondary functionalization. [35][36][37][38][39][40][41][42][43][44] Two main drawbacks of Pd-nanoparticles (Pd-NPs) catalysts are their considerable leaching of the Pd species to the reaction mixture causing the less catalytic activity in the next cycles; and aggregation of the MNPs leading to the increase of MNPs' size and decrease of their surface area, thus resulting in their decrease in their catalytic activity. Hence, using an appropriate support circumvent the above-mentioned problems to provide the suitable size of Pd-NPs and to avoid their leaching and thus to increase the catalyst activity and recyclability.…”