Influence of praseodymium and nitrogen co-doping on the photocatalytic activity of TiO2

被引：59

作者：

Wu, Jing ^{[1
]}

Liu, Qingju ^{[1
]}

Gao, Pan ^{[1
]}

Zhu, Zhongqi ^{[1
]}

机构：

[1] Yunnan Univ, Yunnan Key Lab Nanomat & Technol, Kunming 650091, Yunnan, Peoples R China

来源：

MATERIALS RESEARCH BULLETIN | 2011年 / 46卷 / 11期

基金：

中国国家自然科学基金;

关键词：

Oxide; Chemical synthesis; Catalytic properties; MECHANISM; WATER;

D O I：

10.1016/j.materresbull.2011.07.012

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

TiO2 nanoparticles co-doped with different doping concentration of Pr and N were prepared by sol-gel method combined with microwave chemical method. The samples were characterized by XRD, UV-vis, TEM, XPS, PL, and the photocatalytic activity were investigated by photocatalytic degradation of methylene blue (MB). The results indicate that Pr and N ions incorporate into the lattice of TiO2, co-doping restrains the increase of grain size, broadens the absorption region to visible light, and inhibits the recombination of the photo-generated electrons and holes. Moreover, the photocatalytic activity of Pr-N-TiO2 is remarkable improved due to the synergistic effect of the co-doped ions. The degradation rate of MB in 6 h is 92.81%, which is much higher than that of Degussa P25 (45.01%). (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：1997 / 2003

页数：7

共 28 条

[1] The design and development of highly reactive titanium oxide photocatalysts operating under visible light irradiation [J].

Anpo, M ;

Takeuchi, M .

JOURNAL OF CATALYSIS, 2003, 216 (1-2) :505-516

[2] Visible-light photocatalysis in nitrogen-doped titanium oxides [J].

Asahi, R ;

Morikawa, T ;

Ohwaki, T ;

Aoki, K ;

Taga, Y .

SCIENCE, 2001, 293 (5528) :269-271

[3] Pyridine-TiO2 surface interaction as a probe for surface active centers analysis [J].

Bezrodna, T ;

Puchkovska, G ;

Shimanovska, V ;

Chashechnikova, I ;

Khalyavka, T ;

Baran, J .

APPLIED SURFACE SCIENCE, 2003, 214 (1-4) :222-231

[4]

Cen J.W., 2005, J RARE EARTH SOC, V6, P668

[5] Comparison of visible fluorescence properties between sol-gel derived Er3+-Yb3+ and Er3+-Y3+ co-doped TiO2 films [J].

Chen, SY ;

Ting, CC ;

Hsieh, WF .

THIN SOLID FILMS, 2003, 434 (1-2) :171-177

[6] The effect of surface OH-population on the photocatalytic activity of rare earth-doped P25-TiO2 in methylene blue degradation [J].

Du, P. ;

Bueno-Lopez, A. ;

Verbaas, M. ;

Almeida, A. R. ;

Makkee, M. ;

Moulijn, J. A. ;

Mul, G. .

JOURNAL OF CATALYSIS, 2008, 260 (01) :75-80

[7]

Fujishima A., 2000, J PHOTOCH PHOTOBIO C, V1, P1, DOI DOI 10.1016/S1389-5567(00)00002-2

[8]

Gao P, 2010, CHINESE PHYS B, V19, DOI 10.1088/1674-1056/19/8/087103

[9] V and N co-doped nanocrystal anatase TiO2 photocatalysts with enhanced photocatalytic activity under visible light irradiation [J].

Gu, De-En ;

Yang, Bang-Chao ;

Hu, Yong-Da .

CATALYSIS COMMUNICATIONS, 2008, 9 (06) :1472-1476

[10] EVIDENCE FOR SURFACE-ENHANCED RAMAN-SCATTERING ON NONMETALLIC SURFACES - COPPER PHTHALOCYANINE MOLECULES ON GAP SMALL PARTICLES [J].

HAYASHI, S ;

KOH, R ;

ICHIYAMA, Y ;

YAMAMOTO, K .

PHYSICAL REVIEW LETTERS, 1988, 60 (11) :1085-1088

← 1 2 3 →