One-step hydrothermal synthesis of mesoporous Ce-doped anatase TiO2 nanoparticles with enhanced photocatalytic activity

被引：46

作者：

Fan, Zhenghua ^{[1
]}

Meng, Fanming ^{[1
,2
]}

Gong, Jinfeng ^{[1
]}

Li, Huijie ^{[1
]}

Ding, Zongling ^{[1
]}

Ding, Bing ^{[1
]}

机构：

[1] Anhui Univ, Sch Phys & Mat Sci, 111 Jiulong Rd, Hefei 230601, Peoples R China

[2] Dalian Univ Technol, Key Lab Mat Modificat Laser Ion & Elect Beams, Minist Educ, Dalian 116024, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2016年 / 27卷 / 11期

关键词：

PHOTOLUMINESCENCE PROPERTIES; PERFORMANCE; DEGRADATION; NANOSHEETS; ILLUMINATION; FACETS;

D O I：

10.1007/s10854-016-5329-0

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Mesoporous Ce-doped TiO2 nanoparticles with different content of Ce are prepared by one-step hydrothermal method. The samples are characterized by XRD, TEM, Raman, XPS, BET, PL and UV-vis measurements. The results show that TiO2 doped with Ce can reduce the crystallite size. Under UV irradiation, the Ce-doped TiO2 samples exhibit much higher photocatalytic activity than pure TiO2 and commercial P25 for the degradation of Rhodamine (RhB). The maximum photocatalytic reaction rate constant for Ce-doped TiO2 sample is obtained as 0.021 min(-1). The unique photocatalytic properties of Ce-doped TiO2 are attributed to the improvement of photogenerated electron-hole pairs separation efficiency and formation of more reactive oxygen species owing to the presence of Ce3+/Ce4+. A degradation mechanism is proposed for the degradation of RhB for Ce-doped TiO2 photocatalyst under UV light.

引用

页码：11866 / 11872

页数：7

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