双金属片
氨硼烷
催化作用
化学
脱氢
纳米材料基催化剂
协同催化
石墨烯
氧化物
纳米颗粒
制氢
无机化学
核化学
乙二醇
硼烷
水热合成
化学工程
热液循环
纳米技术
有机化学
材料科学
工程类
作者
Ibtihel Zaier,Zafer Eroğlu,Ӧnder Metin
标识
DOI:10.1515/pac-2022-1204
摘要
Abstract The synthesis of ultrafine well-dispersed bimetallic RuM (M: Co, Ni, Cu) nanoparticles (NPs) supported on graphene hydrogel (GH) was accomplished by a novel one-pot wet-chemical protocol that comprised the hydrothermal reduction of the mixture of graphene oxide and metal precursors by ethylene glycol (EG) in a Teflon-coated stainless-steel reactor at 180 °C. In this study, for the first time, we report the synthesis of bimetallic RuM NPs anchored on GH during the hydrothermal production of GH from graphene oxide (GH-RuM) and the catalysis of the yielded GH-Ru in the hydrolysis of ammonia borane (AB). As-synthesized GH-RuM (M: Co, Ni, Cu) nanocatalysts were characterized by using many advanced instrumental techniques including TEM, XRD, XPS, and ICP-MS. The bimetallic catalysts denoted as GH-Ru 20 Co 80 , GH-Ru 30 Ni 70 and GH-Ru 10 Cu 90 exhibited much higher catalytic activity compared to their Ru, Co, Ni and Cu monometallic counterparts in the hydrolytic dehydrogenation of AB. The catalytic performance of as-prepared NPs in terms of hydrogen generation rate (HGR) was achieved in the order of RuCo > RuNi > RuCu and the highest HGR calculated for the catalyst GH-Ru 20 Co 80 reached 8911.5 mL H 2 g cat −1 min −1 at room temperature with an activation energy of 52.5 kJ mol −1 .
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