Preparation of long lifetime g-C3N4 by using phosphorescence material

다국어 초록 (Multilingual Abstract)

Existing photocatalysts have a problem in that decrease photocatalytic efficiency when illuminated light source are over the UV region or none. to offset disadvantage, g-C3N4, which have responsive with visible light are coupled with phosphorescence material which green light emission when light source is disappeared. As prepared sample was found to have a low recombination rate between excited electron and holes as well as higher performance than the standard g-C3N4 through photocurrent measurement. We demonstrate performance of sample via photodegradation experiments through methylene blue (MB), methyl orange (MO) and rhodamine B (RhB). As results show that phosphorescence material coupled g-C3N4 was better efficiency than g-C3N4, moreover the decomposition of dyes from phosphorescence even after the light source was disappeared.

목차 (Table of Contents)

• 1. Introduction 1
• 2. Experimental 4
• 2.1. Preparation of SAED/g-C3N4 4
• 2.2. Photocatalytic degradation of several organic dyes 6
• 2.3. Measurement of phosphorescence lifetime 8
• 2.4. Characterization 9
• 3. Results and discussions 10
• 3.1. Characterization of SAED/g-C3N4 10
• 3.2 Optical absorbance properties of SAED/g-C3N4 19
• 3.3. Photodegradation of organic dyes 25
• 3.4. Measurement of phosphorescence lifetime 30
• Conclusions 33
• References 34
• Bibliography 41