Noble-Metal-Free NOx Storage over Ba-Modified TiO2 Photocatalysts under UV-Light Irradiation at Low Temperatures

被引：16

作者：

Yamamoto, Akira ^{[1
]}

Mizuno, Yuto ^{[1
]}

Teramura, Kentaro ^{[1
,2
,3
]}

Hosokawa, Saburo ^{[1
,2
]}

Tanaka, Tsunehiro ^{[1
,2
,3
]}

机构：

[1] Kyoto Univ, Grad Sch Engn, Dept Mol Engn, Nishikyo Ku, Kyoto 6158510, Japan

[2] Kyoto Univ, ESICB, Nishikyo Ku, Kyoto 6158520, Japan

[3] Japan Sci & Technol Agcy JST, Precursory Res Embryon Sci & Technol PRESTO, Kawaguchi, Saitama 3320012, Japan

来源：

ACS CATALYSIS | 2015年 / 5卷 / 05期

基金：

日本科学技术振兴机构;

关键词：

photocatalyst; nitrogen oxides; NOx; titanium dioxide; barium; NOx storage; lean NOx trap; SELECTIVE CATALYTIC-REDUCTION; NITROGEN MONOXIDE; OXIDATION; OXIDE; SURFACE; SCR; PERFORMANCE; REMOVAL; AMMONIA; EMISSIONS;

D O I：

10.1021/acscatal.5b00151

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Photoassisted nitrogen oxide (NOx) storage was investigated over the barium-modified titanium dioxide (Ba/TiO2) photocatalysts under UV-light irradiation at a high concentration of nitrogen monoxide (NO) of 200 ppm and a high gas hourly space velocity (GHSV) of 50 000 h(-1). The NO removal efficiency was kept >99% during the 1020 s interval from the start of the reaction over the Ba/TiO2 photocatalyst. The temperature-programed desorption (TPD) measurement and X-ray diffraction (XRD) technique revealed that barium oxide (BaO) species functioned as a NOx storage material even at low temperatures, which result in improvement of the performance of the photoassisted NOx storage.

引用

页码：2939 / 2943

页数：5

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