Fabrication of SrTiO3 nanotubes via an isomorphic conversion strategy

被引：5

作者：

Yang, Dong ^{[1
,2
]}

Zou, Xiaoyan ^{[1
,3
]}

Tong, Zhenwei ^{[3
,4
]}

Nan, Yanhu ^{[3
,4
]}

Ding, Fei ^{[3
,4
]}

Jiang, Zhongyi ^{[3
,4
]}

机构：

[1] Tianjin Univ, Sch Chem Engn & Technol, Key Lab Syst Bioengn, Minist Educ, Tianjin 300072, Peoples R China

[2] Tianjin Univ, Sch Environm Sci & Engn, Tianjin 300072, Peoples R China

[3] Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300072, Peoples R China

[4] Tianjin Univ, Sch Chem Engn & Technol, Key Lab Green Chem Technol, Minist Educ, Tianjin 300072, Peoples R China

来源：

JOURNAL OF NANOPARTICLE RESEARCH | 2018年 / 20卷 / 02期

关键词：

SrTiO3; Nanotube; Hydrothermal synthesis; Isomorphic conversion; Photocatalysis; TIO2; NANOTUBES; PHOTOCATALYTIC HYDROGEN; SOLVOTHERMAL SYNTHESIS; FORMATION MECHANISM; TEMPLATE SYNTHESIS; 001; FACETS; NANOPARTICLES; DEGRADATION; NANOSHEETS; GROWTH;

D O I：

10.1007/s11051-018-4142-5

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

One-dimensional nanotubes have attracted enormous attention due to their specific structure and excellent performance since the carbon nanotube was prepared. In this study, the open-ended SrTiO3 nanotubes (STNTs) have been fabricated for the first time via an isomorphic conversion strategy using the protonated titanate nanotubes (HTNTs) as the precursor and template under the hydrothermal treatment. The as-prepared STNTs consist of uniform and continuous multilayers, having inner and outer diameters about 8.0 and 13 nm. The STNT formation involves the exchange of Sr2+ ions with H+ ions in HTNTs and then in situ growth of cubic SrTiO3 crystals by the templating of HTNT frameworks. It is found that the diffusion process of Sr2+ ions plays a critical role in controlling the nanotube morphology of SrTiO3 crystals. In addition, the SrTiO3 nanotubes exhibit high photocatalytic activity for the Cr(VI) reduction, which can reduce nearly 100% Cr(VI) within 6 h under simulated sunlight irradiation. The current strategy may be broadly applicable for fabricating the nanotubes from raw materials without 2D layered nanostructure.

引用

页数：12