Analytical Sciences

Evaluation of Photocatalytic Abilities by Variation of Conductivity and Dimethyl Sulfoxide: Photocatalytically Active TiO₂-coated Wire Mesh Prepared via a Double-layer Coating Method

Masanobu MORI,* Tsuyoshi SUGITA,** Kengo FUJII,*** Taiki YAMAZAKI,*** Mayu ISAKA,*** Kentaro KOBAYASHI,*** Shinji IWAMOTO,*** and Hideyuki ITABASHI***

*Faculty of Science and Technology, Kochi University, 2-5-1 Akebono-cho, Kochi 780-8027, Japan
**Advanced Science Research Center, Japan Atomic Energy Agency (JAEA), 2-4 Shirakata, Tokai, Ibaraki 319-1195, Japan
***Graduate School of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma 376-8515, Japan

Herein, we evaluated the quality of a double-layer coating method to stably immobilize photocatalysts by photodecomposition of dimethyl sulfoxide (DMSO) on a stainless-steel wire mesh using a flow analytical system, which included the reactor and conductimetric detector (FAS-CD). The prepared photocatalyst consisted of an amorphous titanium peroxide sol layer and a layer of a sol mixture containing TiO₂ and amorphous titanium peroxide. Stable photocatalytic activity was demonstrated through successive photodecomposition tests of DMSO using FAS-CD/equipment.

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