Effect of Multiple Parallel Grooves on the Photocatalytic Activity of Rutile TiO2 Surfaces

Yasuro Ikuma; Seiya Ogoe; Sayaka Nakamura; Koichi Niwa; Srinivasan Anandan; Hiroo Tajiri; Osami Sakata

doi:10.4028/www.scientific.net/KEM.617.109

Paper Titles

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SEM-TES Application to Chemical State Analysis on Cation of Electrode Materials for Electrochemical Capacitors Based on the Sensitivity Correction of X-Ray Intensity Data
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Structure and Reactivity of the La_2-xSr_XMnO_4±δ (0.7≤ X ≤1.0) Solid Solutions in Oxidizing Condition
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Development of Novel "Sponge-Type" Sorbent for Elimination of CS: Preparation of Ammonium Molybdophosphate - Polyurethane Foam (AMP-PUF) Composite and its Sorption Behavior
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Effect of Multiple Parallel Grooves on the Photocatalytic Activity of Rutile TiO₂ Surfaces
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Decontamination of Radioactive Cesium from Sea Sludge Using Microbial Activity
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Removal of Selenium from Aqueous Sample Using Calcium Alumino-Zincate
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Comparative Study of Antibacterial Efficiency of M-TiO₂ (M = Ag, Cu) Thin Films Grown by CVD
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Effect of Multiple Parallel Grooves on the Photocatalytic Activity of Rutile TiO₂ Surfaces

Abstract:

The effect of the surface conditions of (001) and (100) rutile TiO₂ surfaces on the photocatalytic decomposition of linoleic acid was investigated. The rate of decomposition was observed by measuring the weight of the remaining linoleic acid. The as-received (polished) (001) surface showed a higher photocatalytic activity than the (100) surface, but the activity was greatly reduced when the surface was treated by HF solution and heated to 400°C. Condition of the surface strongly affects the photocatalytic activity. The heated (001) surface partially regained its activity after multiple parallel grooves were introduced along the [110] direction. However, the surface did not regain its activity if these grooves were instead introduced along the [1-10] or [100] directions.