Surface Ba species effective for photoassisted NOx storage over Ba-modified TiO2 photocatalysts
作者： Akira Yamamoto , Yuto Mizuno , Kentaro Teramura , Saburo Hosokawa , Tsunehiro Tanaka
DOI: 10.1016/J.APCATB.2015.06.036
关键词: NOx 、 Photocatalysis 、 Surface modification 、 Photoemission spectroscopy 、 Materials science 、 X-ray photoelectron spectroscopy 、 Titanium dioxide 、 Diffuse reflectance infrared fourier transform 、 Nitrogen oxide 、 Inorganic chemistry
摘要: Abstract Surface modification of a TiO2 photocatalyst with Ba species was investigated in photoassisted nitrogen oxide (NOx) storage under UV-light irradiation. The NOx capacity the Ba-modified 1.4 times higher than that non-modified photocatalyst. Structure and role surface on were characterized using temperature programmed reaction (TPR), diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy, X-ray diffraction (XRD), photoemission spectroscopy (XPS), transmission electron microscopy (TEM). characterization results suggested Ba–Ti mixed oxides two-dimensional layer amorphous structure generated via decomposition Ba(NO3)2 precursors by O2 pretreatment at 773 K. Based characterizations reactions, stored more densely surface; therefore, generation improved activity
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