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MOF derived porous carbon supported Cu/Cu2O composite as high performance non-noble catalyst

机译：MOF衍生的多孔碳负载Cu / Cu2O复合材料作为高性能非贵金属催化剂

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摘要

Porous carbon supported copper composite (Cu/Cu2O/C) was synthesized with a facile, low cost and novel method and used as non-noble-metal catalyst for reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) by NaBH4. In the synthetic strategy, metal organic framework Cu-3(BTC)(2) (also denoted as HKUST-1) was used as both sacrificial template and copper precursor, and phenol formaldehyde resin as carbon precursor. The catalytic Cu/Cu2O nanoparticles (Cu/Cu2O NPs) about 40 nm-in-diameter distributed uniformly both on the internal and external surface of the porous carbon flakes, and took up 33.38-37.56 wt% of the Cu/Cu2O/C composite. Compared with noble metal catalysts, the prepared composite showed comparable high catalytic activity, which was mainly due to their porous structure facilitating diffusion of reactants and products, and the high dispersion of accessible catalytic Cu/Cu2O NPs on porous carbon. Moreover, the synthesized catalyst can be reused for at least five cycles due to its good stability. These results confirmed that the as-prepared Cu/Cu2O/C is promising candidate to replace noble metal for catalytic application. (C) 2015 Elsevier Inc. All rights reserved.
机译：简便，低成本，新颖的方法合成了多孔碳载铜复合物（Cu / Cu2O / C），并用作非贵金属催化剂，将4-硝基苯酚（4-NP）还原为4-氨基苯酚（4- AP）由NaBH4提供。在合成策略中，金属有机骨架Cu-3（BTC）（2）（也称为HKUST-1）被用作牺牲模板和铜前体，而酚醛树脂被用作碳前体。直径约40 nm的催化Cu / Cu2O纳米颗粒（Cu / Cu2O NPs）均匀分布在多孔碳薄片的内表面和外表面上，占Cu / Cu2O / C复合材料的33.38-37.56 wt％ 。与贵金属催化剂相比，所制备的复合材料具有相当高的催化活性，这主要是由于它们的多孔结构有利于反应物和产物的扩散，以及易接近的催化性Cu / Cu2O NPs在多孔碳上的高度分散。此外，由于其良好的稳定性，合成的催化剂可以重复使用至少五个循环。这些结果证实，所制备的Cu / Cu 2 O / C是有望替代贵金属进行催化应用的有希望的候选者。 （C）2015 Elsevier Inc.保留所有权利。

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