TiO2/BiVO4 heterojunction nanocomposites with hollow submicron spheres with carbon as charge transfer meditator and their enhanced photocatalytic activity in visible light
- Title
- TiO2/BiVO4 heterojunction nanocomposites with hollow submicron spheres with carbon as charge transfer meditator and their enhanced photocatalytic activity in visible light
- Author
- 이승현
- Advisor(s)
- 서경도
- Issue Date
- 2017-02
- Publisher
- 한양대학교
- Degree
- Master
- Abstract
- In this paper, we present feasible fabrication method for TiO2/BiVO4 /carbon heterojunction photocatalysts which are uniformly distributed heterojunctions. TiO2/BiVO4/carbon composites with heterojunction structure have been successfully synthesized under Poly(MAA/EGDMA) using as template. TiO2/BiVO4/carbon heterojucntion photocatalyst are synthesized by using charge interaction of ion precursors. X-ray diffraction (XRD), X-ray photoelectron spectroscopies (XPS) indicate that the TiO2/BiVO4/carbon photocatalysts are composed of anatase TiO2 and monoclinic BiVO4. Elemental mapping analysis presented homogeneous distributed heterojunctions in the TiO2/BiVO4/carbon photocatalyst. Photocatalytic activities were examined by studying the degradation of methylene blue (MB), Methyl orange (MO) and Rhodamine B (Rh B) under visible-light irradiation. It is demonstrated that the formation of the TiO2/BiVO4/carbon heterojunction structure plays an important role in the photocatalytic activity. The homogemeous heterojucntions improve separation, transport, and suppress recombination of photogenerated charges. As a result, TiO2/BiVO4/carbon heterojunction photocatalysts improved the lifetime of the photogenerated charges and photocatalytic activity.
- URI
- https://repository.hanyang.ac.kr/handle/20.500.11754/124277http://hanyang.dcollection.net/common/orgView/200000429811
- Appears in Collections:
- GRADUATE SCHOOL[S](대학원) > CHEMICAL ENGINEERING(화학공학과) > Theses (Master)
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