TY - JOUR
T1 - Novel luminescent photocatalytic deNOx activity of CaAl2O4:(Eu,Nd)/TiO2-xNy composite
AU - Li, Huihui
AU - Yin, Shu
AU - Sato, Tsugio
N1 - Funding Information:
This research was supported in part by the Management Expenses Grants for National Universities Corporations from the Ministry of Education, Culture, Sports, Science for Technology of Japan (MEXT), and by the Grant-in-Aid for Science Research (No. 20360293 and No. 22651022 ).
PY - 2011/8/11
Y1 - 2011/8/11
N2 - The systematic experiments of photocatalytic degradation of NO gas were carried out by using novel composites containing TiO2-xNy loaded on a long afterglow phosphor, CaAl2O4:(Eu,Nd). The composites were prepared in a sequence of procedures, which involved reactions of TiCl3 and hexamethylenetetramine (HMT) mixed solution at 190°C for 2h to precipitate nano-size TiO2-xNy particles, followed by mixing the TiO2-xNy with a micro-size CaAl2O4:(Eu,Nd) particles by a soft planetary ball milling to yield CaAl2O4:(Eu,Nd)/TiO2-xNy composites. Photocatalytic degradation of NO was monitored both under UV light irradiation and in the dark after turning off the light. The composite displayed excellent photocatalytic activity under UV-light irradiation as well as persistent activity after turning off light. A promising strategy involves coupling of visible light responsive photocatalyst with long afterglow phosphor was established. It is a new concept for the photocatalyst synthesis implying a possibility of a novel persistent active photocatalytic system.
AB - The systematic experiments of photocatalytic degradation of NO gas were carried out by using novel composites containing TiO2-xNy loaded on a long afterglow phosphor, CaAl2O4:(Eu,Nd). The composites were prepared in a sequence of procedures, which involved reactions of TiCl3 and hexamethylenetetramine (HMT) mixed solution at 190°C for 2h to precipitate nano-size TiO2-xNy particles, followed by mixing the TiO2-xNy with a micro-size CaAl2O4:(Eu,Nd) particles by a soft planetary ball milling to yield CaAl2O4:(Eu,Nd)/TiO2-xNy composites. Photocatalytic degradation of NO was monitored both under UV light irradiation and in the dark after turning off the light. The composite displayed excellent photocatalytic activity under UV-light irradiation as well as persistent activity after turning off light. A promising strategy involves coupling of visible light responsive photocatalyst with long afterglow phosphor was established. It is a new concept for the photocatalyst synthesis implying a possibility of a novel persistent active photocatalytic system.
KW - Composite
KW - DeNO
KW - Luminescent photocatalyst
KW - Persistent photocatalytic system
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U2 - 10.1016/j.apcatb.2011.06.019
DO - 10.1016/j.apcatb.2011.06.019
M3 - Article
AN - SCOPUS:79960845053
VL - 106
SP - 586
EP - 591
JO - Applied Catalysis B: Environmental
JF - Applied Catalysis B: Environmental
SN - 0926-3373
IS - 3-4
ER -