一种制备在600 - 700纳米可见光照射下工作的金/二氧化钛等离子体光催化剂的非常简单的方法。

A very simple method for the preparation of Au/TiO plasmonic photocatalysts working under irradiation of visible light in the range of 600-700 nm.

作者信息

Tanaka Atsuhiro, Hashimoto Keiji, Kominami Hiroshi

机构信息

Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, Kowakae, Higashiosaka, Osaka 577-8502, Japan.

出版信息

Chem Commun (Camb). 2017 Apr 27;53(35):4759-4762. doi: 10.1039/c7cc01444a.

DOI:10.1039/c7cc01444a

PMID:28417118

Abstract

By using a facile calcination method, we succeeded in the preparation of partially spherical gold particles supported on TiO exhibiting photoabsorption due to surface plasmon resonance at around 620 nm. Surprisingly, the selective oxidation of benzyl alcohol to benzaldehyde occurred in an aqueous suspension of thus-prepared Au/TiO under irradiation of light from a Xe lamp with an R60 cut-off filter (λ > 600 nm), and the apparent quantum efficiency reached 7.2% at 625 nm and 4.2% even at 700 nm.

摘要

通过一种简便的煅烧方法，我们成功制备出了负载在TiO上的部分球形金颗粒，该颗粒由于在620 nm左右的表面等离子体共振而表现出光吸收。令人惊讶的是，在使用带有R60截止滤光片（λ>600 nm）的氙灯照射下，在如此制备的Au/TiO的水悬浮液中发生了苯甲醇选择性氧化为苯甲醛的反应，并且在625 nm处表观量子效率达到7.2%，甚至在700 nm处也达到4.2%。