فهرس المقالات Seyed Mahdi Heghayeghi المقاله 1 - Trifluoroacetate-bonded polyethylene graphene oxide composite as a novel and efficient catalyst for the synthesis of benzimidazoles under solvent-free conditions Esmael Rostami Seyed Mahdi Haghayeghi Iranian Journal of Catalysis , العدد 1 , السنة 11 , زمستان 2021