Magnetic Fe3O4-supported sulfonic acid-functionalized graphene oxide (Fe3O4@GO-naphthalene-SO3H): a novel and recyclable nanocatalyst for green one-pot synthesis of 5-oxo-dihydropyrano[3,2-c]chromenes and 2-amino-3-cyano-1,4,5,6-tetrahydropyrano[3,2-c]quinolin-5-ones

Evaluation and determination of occupational and environmental exposure of lead in workplace air and human workers based dispersive ionic liquid solid phase micro extraction in battery manufacturing factories from Iran

“…The mixture ionic liquid with ligand ([HMIM] [PF 6 ]/APDC) modified on graphene oxide nanostructures(GONs) and used as adsorbent for lead extraction. The synthesis of graphene oxide (GO) was followed by the modified Hummers method [31][32][33]. First, 10 g of graphite powder was mixed with 500 mL of H 2 SO 4 and stirred for one day.…”

Preparation of Functionalized Carbon‐Coated Cobalt Nanoparticles with Sulfonated Arene Derivatives, a Study on Surface Functionalization and Stability

“…Recently,a mino naphthalenes ulfonic acid was functionalizedo nto graphene oxide (via diazonium transformation) in combination with iron oxide,t of orm am agnetic catalyst. [17] In general sulfonica cids can be used as catalysts to enable organic reactions. [18,19] Direct sulfonica cid functionalization on iron oxide for use in catalysis hasalso been reported.…”

Synthesis and characterization of Fe3O4@THAM‐SO3H as a highly reusable nanocatalyst and its application for the synthesis of dihydropyrano[2,3‐c]pyrazole derivatives

“…[16][17][18][19][20] As a review of previous studies, many methods have been reported for sulfuric acid coupling as an acidic group on magnetic nanoparticles. Among them, Fe 3 O 4 @APTES@isatin-SO 3 H, [21] CoFe 2 O 4 @SiO 2 -SO 3 H, [22] Fe 3 O 4 @BNPs@SiO 2 -SO 3 H, [23] Fe 3 O 4 @zeolite-SO 3 H, [24] Fe 3-x TixO 4 -SO 3 H [25] and Fe 3 O 4 @GO-naphthalene-SO 3 H [26] are examples of catalysts.…”