TY - JOUR
T1 - Persistent luminescence assisted photocatalytic properties of CaAl 2O 4:(Eu,Nd)/TiO 2-xN y and Sr 4Al 14O 25:(Eu,Dy)/TiO 2-xN y
AU - Li, Huihui
AU - Yin, Shu
AU - Wang, Yuhua
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 (Nos. 20360293 and 22651022 ).
PY - 2012/11
Y1 - 2012/11
N2 - The systematic experiments of photocatalytic degradation of NO gas and acetaldehyde were carried out by using novel composites consisting of TiO 2-xN y loaded on two types of long afterglow phosphor, CaAl 2O 4:(Eu,Nd) and Sr 4Al 14O 25:(Eu,Dy). The two kinds of composites were prepared in a sequence of the same procedures, which involved reactions of TiCl 3 and hexamethylenetetramine (HMT) mixed solution at 190 °C for 2 h to precipitate nano-size TiO 2-xN y particles, followed by mixing the TiO 2-xN y with a micro-size CaAl 2O 4:(Eu,Nd) or Sr 4Al 14O 25:(Eu,Dy) particles by a facile planetary ball milling to yield CaAl 2O 4:(Eu,Nd)/TiO 2-xN y or Sr 4Al 14O 25:(Eu,Dy)/TiO 2-xN y composites. Both composites showed the persistent photocatalytic degradation of NO and acetoaldehyde after turning off the light. CaAl 2O 4:(Eu,Nd) /TiO 2-xN y showed higher persistent NO destruction ability in dark after turning off the light, while Sr 4Al 14O 25:(Eu,Dy)/TiO 2-xN y is excellent in CH 3CHO removal. The difference in the photocatalytic activity observed for CaAl 2O 4:(Eu,Nd)/TiO 2-xN y and Sr 4Al 14O 25:(Eu,Dy)/TiO 2-xN y might be attributed to the difference in the emission property.
AB - The systematic experiments of photocatalytic degradation of NO gas and acetaldehyde were carried out by using novel composites consisting of TiO 2-xN y loaded on two types of long afterglow phosphor, CaAl 2O 4:(Eu,Nd) and Sr 4Al 14O 25:(Eu,Dy). The two kinds of composites were prepared in a sequence of the same procedures, which involved reactions of TiCl 3 and hexamethylenetetramine (HMT) mixed solution at 190 °C for 2 h to precipitate nano-size TiO 2-xN y particles, followed by mixing the TiO 2-xN y with a micro-size CaAl 2O 4:(Eu,Nd) or Sr 4Al 14O 25:(Eu,Dy) particles by a facile planetary ball milling to yield CaAl 2O 4:(Eu,Nd)/TiO 2-xN y or Sr 4Al 14O 25:(Eu,Dy)/TiO 2-xN y composites. Both composites showed the persistent photocatalytic degradation of NO and acetoaldehyde after turning off the light. CaAl 2O 4:(Eu,Nd) /TiO 2-xN y showed higher persistent NO destruction ability in dark after turning off the light, while Sr 4Al 14O 25:(Eu,Dy)/TiO 2-xN y is excellent in CH 3CHO removal. The difference in the photocatalytic activity observed for CaAl 2O 4:(Eu,Nd)/TiO 2-xN y and Sr 4Al 14O 25:(Eu,Dy)/TiO 2-xN y might be attributed to the difference in the emission property.
KW - Acetaldehyde
KW - Nitrogen-doped TiO
KW - Persistent luminescence assisted
KW - Photocatalytic reaction
KW - deNO
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U2 - 10.1016/j.molcata.2012.05.026
DO - 10.1016/j.molcata.2012.05.026
M3 - Article
AN - SCOPUS:84866009284
VL - 363-364
SP - 129
EP - 133
JO - Journal of Molecular Catalysis A: Chemical
JF - Journal of Molecular Catalysis A: Chemical
SN - 1381-1169
ER -