The Effect of Molar Ratios of TiSi on Core-Shell SiO2@TiO2 Nanoparticles for Photocatalytic Applications
Joint Authors
Fu, Ning
Ren, Xue-chang
Wan, Jian-xin
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-04-27
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
After the core-shell SiO2@TiO2 nanoparticles (CSTNs) were synthesized by hydrothermal method, we investigated the influence of different molar ratios of Ti/Si on morphology, structure, and photocatalytic activity of the CSTNs.
It was found that the CSTNs showed different size and surface morphology as the Ti/Si molar ratio changed.
Besides, the TiO2 and the CSTN had the anatase phase after hydrothermal process and calcination at 450°C for 2 h.
The N2 adsorption-desorption isotherms demonstrated the CSTNs with the molar ratio of Ti/Si increased from 1 : 1 to 8 : 1 can be categorized as type IV with hysteresis loop of type H2 and showed to be mesoporous materials.
In addition, the CSTNs with the Ti/Si molar ratio of 5 : 1 had the highest surface area of 176.79 m2/g.
Surface charges showed the isoelectric point (IEP) of the CSTNs ranged between silica (IEP at pH 3.10) and titania (IEP at pH 5.29).
Since the molar ratio of Ti/Si increased from 1 : 1 to 8 : 1 by degradating both colorless organic pollutant of phenol and colored substances of methylene blue (MB) under UV irradiation, the photocatalytic activity of CSTNs exhibited higher photodegradation efficiency compared with TiO2.
What is more, the experimental results also showed the CSTNs with Ti/Si molar ratio of 5 : 1 had the highest photocatalytic activity and showed higher photocatalytic efficiency compared with other TiO2-SiO2 composites reported for photodegradation of phenol and MB.
American Psychological Association (APA)
Fu, Ning& Ren, Xue-chang& Wan, Jian-xin. 2020. The Effect of Molar Ratios of TiSi on Core-Shell SiO2@TiO2 Nanoparticles for Photocatalytic Applications. Journal of Nanomaterials،Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1188470
Modern Language Association (MLA)
Fu, Ning…[et al.]. The Effect of Molar Ratios of TiSi on Core-Shell SiO2@TiO2 Nanoparticles for Photocatalytic Applications. Journal of Nanomaterials No. 2020 (2020), pp.1-11.
https://search.emarefa.net/detail/BIM-1188470
American Medical Association (AMA)
Fu, Ning& Ren, Xue-chang& Wan, Jian-xin. The Effect of Molar Ratios of TiSi on Core-Shell SiO2@TiO2 Nanoparticles for Photocatalytic Applications. Journal of Nanomaterials. 2020. Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1188470
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1188470