| Literature DB >> 28371448 |
Shingo Akita1, Makoto Amemiya1, Takanori Matsumoto1, Yohei Jikihara1, Tsuruo Nakayama1, Md Shahriar A Hossain2,3, Kenya Kani2,4, Daisuke Ishii4, Md Tofazzal Islam5, Xiangfen Jiang2, Amanullah Fatehmulla6, Wazirzada Aslam Farooq6, Yoshio Bando2, Victor Malgras2, Yusuke Yamauchi2,3.
Abstract
In the present work, 2.4 nm gold nanoparticles (Au NPs) are uniformly dispersed on mesoporous titania thin films which are structurally tuned by controlling the calcination temperature. The gold content of the catalyst is as high as 27.8 wt %. To our knowledge, such a high loading of Au NPs with good dispersity has not been reported until now. Furthermore, the reaction rate of the gold particles is enhanced by one order of magnitude when supported on mesoporous titania compared to non-porous titania. This significant improvement can be explained by an increase in the diffusivity of the substrate due to the presence of mesopores, the resistance to agglomeration, and improved oxygen activation.Entities:
Keywords: gold catalyst; mesoporous films; mesoporous materials; nanoparticles; titania
Year: 2017 PMID： 28371448 DOI： 10.1002/asia.201700080
Source DB: PubMed Journal: Chem Asian J ISSN： 1861-471X