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- Title
Synthesis of core/shell-structured CaCu3Ti4O12/SiO2 composites for effective degradation of rhodamine B under ultraviolet light.
- Authors
Ahmadipour, Mohsen; Arjmand, Mohammad; Thirmizir, Mohd Zharif Ahmad; Le, Anh Thi; Chiam, Sin Ling; Pung, Swee-Yong
- Abstract
The rapid growth of industrialization has driven the development of wastewater treatment technologies to overcome the environmental pollution that comes with it. Organic-based pollutants such as dyes and petroleum-based hydrocarbons are known to be the major pollutants from industries. Advanced photocatalysts is an alternative solution for organic pollutants clean up without the generation of toxic by-products. In this paper, a forthright dye removal technique by CCTO/SiO2 core–shell composites produced via chemical precipitation was introduced. The core–shell CCTO/SiO2 composites were produced from a silica precursor, i.e. TEOS. The effects of TEOS content (x = 0.5 and 1 ml) on the morphology, structure, and photocatalytic activities of core–shell CCTO/SiO2 composites were studied. The phase compositions and structural properties of core–shell CCTO/SiO2 composites were analyzed by TEM-EDAX, XRD, FTIR, and BET. The particle and crystallite sizes of core–shell CCTO/SiO2 composite produced with higher TEOS content (x = 1 ml) were smaller, i.e. 380 ± 57 nm and 42 nm respectively. However, higher surface area (8.23 m2g−1) was observed. The photodegradation efficiency (η%) of core–shell CCTO/SiO2 composite prepared using 1 ml of TEOS was 76.5% after 40 min exposure to UV light; better than product from the system with 0.5 ml TEOS. The C1S photocatalyst was very stable with a high photodegradation efficiency of 73.5% even after 4 cycles of RhB degradation.
- Subjects
ULTRAVIOLET radiation; POLLUTION; WASTEWATER treatment; COMPOSITE structures
- Publication
Journal of Materials Science: Materials in Electronics, 2020, Vol 31, Issue 22, p19587
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-020-04486-1