Synthesis and Enhanced Photocatalytic Activity of Porous SrTiO3/TiO2 Composites
- Authors
- Qian, YT[Qian, Yongteng]; Li, KD[Li, Kaidi]; Wang, WS[Wang, Wenshuang]; Wang, JH[Wang, Jinghui]; Cheng, XC[Cheng, Xuechun]; Zhou, YL[Zhou, Yalan]; Du, JM[Du, Jimin]; Chen, HJ[Chen, Huijuan]; Zhang, B[Zhang, Bing]; Kang, DJ[Kang, Dae Joon]
- Issue Date
- Sep-2019
- Publisher
- AMER SCIENTIFIC PUBLISHERS
- Keywords
- SrTiO3; TiO2; Photodegradation; Porous Structure
- Citation
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.19, no.9, pp.5707 - 5712
- Indexed
- SCIE
- Journal Title
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
- Volume
- 19
- Number
- 9
- Start Page
- 5707
- End Page
- 5712
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/8797
- DOI
- 10.1166/jnn.2019.16550
- ISSN
- 1533-4880
- Abstract
- Porous photocatalysts have attracted significant attention for their large specific surface area, numerous surface catalytic active sites, and high photocatalytic activity. In this study, porous SrTiO3/TiO2 composites were successfully fabricated through a hydrothermal approach utilizing porous TiO2 as a substrate. The as-synthesized SrTiO3/TiO2 composites were then characterized by X-ray diffraction, scanning electron microscopy (SEM), transmission electron microscopy, BrunauerEmmett-Teller (BET), and ultraviolet-visible spectroscopy (UV-Vis) analysis. The results of SEM and BET indicate that such composites have a porous structure and large surface area. Compared to unadulterated TiO2, SrTiO3/TiO2 composites exhibit higher photocatalytic performance for the photodegradation of rhodamine B under UV-Vis irradiation. Additionally, it was found that when the content of SrTiO3 reaches 20%, it achieves the maximum photodegradation efficiency of 98.6% under UV-Vis irradiation over 60 min. These results demonstrate that SrTiO3/TiO2 composites are a promising material in terms of environmental cleanliness.
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