Mawarnis Elvy Rahmi, Ali Umar Akrajas, Tomitori Masahiko, Balouch Aamna, Nurdin Muhammad, Muzakkar Muhammad Zakir, Oyama Munetaka
Department of Chemistry Education, Faculty of Tarbiyah, Institut Agama Islam Negeri (IAIN), 27213 Batusangkar, West Sumatera, Indonesia.
Institute of Microengineering and Nanoelectronics, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia.
ACS Omega. 2018 Sep 20;3(9):11526-11536. doi: 10.1021/acsomega.8b01268. eCollection 2018 Sep 30.
A combinative effect of two or more individual material properties, such as lattice parameters and chemical properties, has been well-known to generate novel nanomaterials with special crystal growth behavior and physico-chemical performance. This paper reports unusually high catalytic performance of AgPt nanoferns in the hydrogenation reaction of acetone conversion to isopropanol, which is several orders higher compared to the performance shown by pristine Pt nanocatalysts or other metals and metal-metal oxide hybrid catalyst systems. It has been demonstrated that the combinative effect during the bimetallisation of Ag and Pt produced nanostructures with a highly anisotropic morphology, i.e., hierarchical nanofern structures, which provide high-density active sites on the catalyst surface for an efficient catalytic reaction. The extent of the effect of structural growth on the catalytic performance of hierarchical AgPt nanoferns is discussed.
众所周知，两种或更多种个体材料特性（如晶格参数和化学性质）的组合效应能够生成具有特殊晶体生长行为和物理化学性能的新型纳米材料。本文报道了AgPt纳米蕨在丙酮加氢转化为异丙醇反应中具有异常高的催化性能，与原始Pt纳米催化剂或其他金属及金属-金属氧化物混合催化剂体系相比，该性能高出几个数量级。研究表明，Ag和Pt双金属化过程中的组合效应产生了具有高度各向异性形态的纳米结构，即分级纳米蕨结构，其为高效催化反应在催化剂表面提供了高密度活性位点。本文还讨论了结构生长对分级AgPt纳米蕨催化性能的影响程度。
