Synthesis of Titania Nanoparticle-Loaded Mesoporous Silica and their Photocatalytic Properties
- Title
- Synthesis of Titania Nanoparticle-Loaded Mesoporous Silica and their Photocatalytic Properties
- Other Titles
- 티타니아 입자 담지 중공형 실리카의 합성과 광촉매 성능에 대한 연구
- Author
- Bomin Kim
- Alternative Author(s)
- 김보민
- Advisor(s)
- 염봉준
- Issue Date
- 2019. 8
- Publisher
- 한양대학교
- Degree
- Master
- Abstract
- Titania nanoparticle-loaded mesoporous silica has attracted great attentions as a promising photocatalyst for the removal of organic pollutants. However, the synthesis methods still have to be optimized. In this study, titania nanoparticle-loaded mesoporous silica (SBA-15) was prepared using a layer-by-layer (LbL) assembly method. For comparison, the conventional method based on sol-gel reactions were used. Each sample photo-decomposed sodium dodecylbenzylsulfate. The photocatalytic performance of the LbL-synthesized samples was enhanced comparing to that of the sol–gel samples. After 5 h of UV irradiation, the total decomposition amount increased by approximately 63%–108%, and the apparent first-order rate constant increased about 2.4 times. They also exhibit higher photocatalytic efficiency during reusability tests. In the LbL-synthesized samples, the titania nanoparticles were mainly located on the outer surface of the silica, which facilitate effective photodecomposition than the sol–gel samples. The results can be helpful for the design of photocatalytic nanomaterials for environmental applications.
- URI
- https://repository.hanyang.ac.kr/handle/20.500.11754/109281http://hanyang.dcollection.net/common/orgView/200000435889
- Appears in Collections:
- GRADUATE SCHOOL[S](대학원) > CHEMICAL ENGINEERING(화학공학과) > Theses (Master)
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