声明
1 Introduction
1. 1 Background of the Study
1.2 Purpose of Study
1.3 Objectives
1.4 Significance of the Study
1.5 Limitations of the Study
2 Literature Review
2.1 Introduction
2.2 Uranium
2.2.1 Nature and Source
2.2.2 Effects of Uranium Contaminated Water
2.2.3 Remediation of Uranium from Uranium-Contaminated Water
2.3.1 Photocatalysis
2.3.2 Mechanism of Photocatalysis
2.3.3 Application of Photocatalysis in Environmental Remediation
2.4 Graphitic Carbon Nitride as a Photocatalytic Semiconductor
2.4.1 Graphitic Carbon Nitride
2.4.2 Application of g-C3N4 as Photocatalyst in Environmental Remediation
2.5.1 Magnetite
2.5.2 Application of Magnetite in Environmental Remediation
2.6 Montmorillonite and its Application in Environmental Remediation
2.7 Microcapsules and Its Application in Photocatalysis
2.7.1 Microcapsules
2.7.2 Stabilization of Microcapsules
2.7.3 Application of Microcapsules in Photocatalysis
2.8 Conclusion
3 Research Methodology
3.1 Characterization of Physical, Chemical, Structural and Mechanical Properties of Microcapsules
3.2 Experiment Materials
3.3.1 Modification of Fe3O4 with Polyethylene Glycol
3.3.2 Preparation of g-C3N4
3.3.3 Preparation of MMT@g-C3N4/Fe3O4 Oil/Water(O/W) Pickering Emulsion Microcapsules
3.3.4 Preparation of Uranium Solution and Plotting of Calibration Curve
3.4 Experimental Procedure
4 Experimental Results and Discussion
4.1 Introduction
4.2 Characterization of Samples
4.2.1 Optical Microscope Image
4.2.2 Fourier Transform Infra-Red Spectroscopy
4.3 Factors that Affect Visible Light-Induced Adsorption of U(Ⅵ) by MMT@g-C3N4/Fe3O4 Microcapsules
4.3.1 Effects of Photocatalyst Concentration on U(Ⅵ) adsorption
4.3.2 Effect of Solution pH on the photocatalytic adsorption of U(Ⅵ)
4.3.3 Effect of Initial U(Ⅵ) Concentration
4.3.4 Effect of Adsorbent Dosage on Adsorption Efficiency
4.3.5 Effect of Temperature on U(Ⅵ) photocatalytic adsorption
4.4 Adsorption Kinetics
4.5 Conclusion
5 Summary
5.1 Summary
致谢
参考文献
西南科技大学;
