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Chemical-bonds Conjugated SnO2/AgIO4 Hybrids for Degradation of High Concentration Rhodamin B under Visible Light Illumination
- Source :
- Journal of Wuhan University of Technology-Mater. Sci. Ed.. 34:1408-1414
- Publication Year :
- 2019
- Publisher :
- Springer Science and Business Media LLC, 2019.
-
Abstract
- SnO2/AgIO4 hybrids were fabricated by an in-situ synthetic method at room temperature. The structure, morphology, light response range, separation efficiency of the electron-hole pairs and elements of the as-synthesized samples were characterized by adopting X-ray diffraction, scanning electron microscopy, UV-Vis diffuse reflectance spectroscopy, electrochemical impedance spectroscopy and X-ray photoelectron spectroscopy, respectively. The synergistically photocatalytic degradation mechanism of the as-synthesized composites was also proposed. The experimental results reveal that under the visible light irradiation the as-synthesized SnO2/AgIO4 hybrids can enhance the photocatalytic degradation efficiency of rhodamine B compared to pure samples. With increasing the molar ratios of AgIO4 to SnO2, it displays the trend of first increasing and then decreasing. When it is 1:2 in 150 min, the as-prepared hybrids have the highest degradation efficiency of 93.1%, which increases by 6550.0%, 30.5%, and 1505.0% compared to those of pure SnO2, AgIO4, and TiO2 (P25), respectively. Moreover, the Sn-O-Ag cross-linking bonds are formed at the interfaces of SnO2 and AgIO4. In addition, superoxide anion radicals and holes play a major role in the process of photodegradation.
- Subjects :
- Materials science
Diffuse reflectance infrared fourier transform
Scanning electron microscope
02 engineering and technology
Conjugated system
010402 general chemistry
021001 nanoscience & nanotechnology
Photochemistry
01 natural sciences
0104 chemical sciences
Dielectric spectroscopy
chemistry.chemical_compound
chemistry
X-ray photoelectron spectroscopy
Rhodamine B
General Materials Science
0210 nano-technology
Photodegradation
Visible spectrum
Subjects
Details
- ISSN :
- 19930437 and 10002413
- Volume :
- 34
- Database :
- OpenAIRE
- Journal :
- Journal of Wuhan University of Technology-Mater. Sci. Ed.
- Accession number :
- edsair.doi...........f1115bb141baaf0b403c9cccc225eb48