Kinetic approach for the adsorption-photodecomposition properties of mesoporous silica-titania

被引：3
|
作者：
Hirata, Shingo [1 ]
Inada, Miki [2 ,3 ]
Enomoto, Naoya [3 ,4 ]
Hayashi, Katsuro [3 ]
Hojo, Junichi [3 ]
机构：
[1] Kyushu Univ, Grad Sch Engn, Dept Chem & Biochem, Nishi Ku, 744 Motooka, Fukuoka, Fukuoka 8190395, Japan
[2] Kyushu Univ, Ctr Adv Instrumental Anal, 6-1 Kasuga Koen, Kasuga, Fukuoka 8168580, Japan
[3] Kyushu Univ, Fac Engn, Dept Appl Chem, Nishi Ku, 744 Motooka, Fukuoka, Fukuoka 8190395, Japan
[4] Ariake Coll, Natl Inst Technol, Dept Creat Engn, 150 Higashihagio Machi, Omuta, Fukuoka 8368585, Japan
来源：
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN | 2019年 / 127卷 / 04期
关键词：
Mesoporous silica-titania; Adsorbent; Photocatalyst; Kinetic analysis; PHOTOCATALYTIC DEGRADATION; ACTIVATED CARBON; HIGHLY CRYSTALLINE; POROUS SILICA; TIO2; DECOMPOSITION; NANOPARTICLES; OXIDATION; PHOTODEGRADATION; ACETONE;
D O I：
10.2109/jcersj2.19003
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We have fabricated mesoporous silica-titania by a sol-gel method and evaluated the photocatalytic activity using acetaldehyde. The synthesized mesoporous silica-titania was effective for the removal of acetaldehyde from gas phase by adsorption and photodecomposition. In this study, the kinetic approach was carried out in order to clarify the adsorption-photodecomposition property of mesoporous silica-titania. The adsorption, direct photodecomposition and concerted adsorption-photodecomposition can be separately described in our simulation curves, which indicates that the adsorbability strongly affects the removal of acetaldehyde in the early stage and the photodecomposition after the strong adsorption of acetaldehyde on mesoporous silica-titania is important for the complete removal of acetaldehyde from gas phase. (C) 2019 The Ceramic Society of Japan. All rights reserved.
引用
收藏
页码：242 / 248
页数：7
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