In situ infrared spectroscopic studies of adsorption of lactic acid and related compounds on the TiO2 and CdS semiconductor photocatalyst surfaces from aqueous solutions

被引：40

作者：

Awatani, T

Dobson, KD

McQuillan, AJ

Ohtani, B

Uosaki, K

机构：

[1] Univ Otago, Dept Chem, Dunedin, New Zealand

[2] Hokkaido Univ, Grad Sch Sci, Div Chem, Chem Phys Lab, Sapporo, Hokkaido 0600810, Japan

来源：

CHEMISTRY LETTERS | 1998年 / 08期

关键词：

D O I：

10.1246/cl.1998.849

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In situ attenuated total reflectance infrared (ATR-IR) spectroscopy has been used to determine the structure of adsorbed lactic acid (LA) compounds on the surfaces of titanium dioxide (TiO2) and cadmium sulfide (CdS) photocatalysts. LA was found to chelate onto the TiO2 in a bidentate fashion, while in the CdS case, LA was adsorbed electrostatically as the lactate ion. These differing surface interactions are likely to determine the selectivity in the photo-products of LA.

引用

页码：849 / 850

页数：2

共 14 条

[1]

[Anonymous], 1983, METAL CARBOXYLATES

[2] Adsorbed thiosulfate intermediate of cadmium sulfide aqueous photocorrosion detected and characterized by in situ infrared spectroscopy [J].