Low temperature hydrothermal synthesis of SrTiO3 nanoparticles without alkali and their effective photocatalytic activity
- 1.8k Downloads
SrTiO3 nanoparticle (NP) photocatalyst was synthesized with a facile and environmentalfriendly hydrothermal method using tetrabutyltitanate, strontium oxide, and ethanolamine as precursors at low temperature without alkali as mineralizer for the first time. The SrTiO3 nanoparticles were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), field emission scanning electron microscopy (FESEM), and N2 Brunauer–Emmett–Teller (BET) method. The SrTiO3 catalyst synthesized at 120 °C (STO-120) exhibited the highest photocurrent intensity among the samples synthesized at different hydrothermal temperatures. The high photocatalytic performance of STO-120 was mainly attributed to the more homogeneous and minimum nanoparticle size, the highest surface area, and the maximum light absorption property among the four different samples. This work presented an applicable and facile method to fabricate a highly active and stable SrTiO3 photocatalyst for organic pollutant degradation.
Keywordspolyhedral SrTiO3 hydrothermal synthesis low temperature photocurrent property photocatalytic activity stability
This work was financially supported by the National Natural Science Foundation of China (Nos. 51262001 and 21563001), the Natural Science Foundation of Ningxia (No. NZ16091), the Research Project of Ningxia Colleges and Universities (Nos. NGY2012095 and NGY2015159), the Research Project of Beifang University of Nationalities (No. 2014XBZ06), and the State Ethnic Affairs Commission Scientific Research Project of China (No. 14BFZ014).
- Balaya P, Ahrens M, Kienle L, et al. Synthesis and characterization of nanocrystalline SrTiO3. J Am Ceram Soc 2006, 89: 2804–2811.Google Scholar
Open Access The articles published in this journal are distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.