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系統識別號 U0026-0708201813365000
論文名稱(中文) 添加 α-MoO3 奈米帶及中孔洞 TiO2 顆粒以強化 g-C3N4 之光催化效果
論文名稱(英文) Enhanced photocatalytic performance of g-C3N4 through the addition of α-MoO3 nanobelts and TiO2 mesoporous beads
校院名稱 成功大學
系所名稱(中) 材料科學及工程學系
系所名稱(英) Department of Materials Science and Engineering
學年度 106
學期 2
出版年 107
研究生(中文) 楊氏金燕
研究生(英文) Duong Thi Kim Yen
學號 NB6057124
學位類別 碩士
語文別 英文
論文頁數 96頁
口試委員 指導教授-丁志明
口試委員-張高碩
口試委員-蘇彥勳
口試委員-朱信
中文關鍵字 none 
英文關鍵字 MoO3 /g-C3N4  Carbon nitride  TiO2 mesoporous beads 
學科別分類
中文摘要 本研究以g-C3N4為基礎來合成多組分光催化劑並提高g-C3N4的光催化性能。
。將三聚氰胺加熱到550℃並加入過氧化氫(H2O2)來剝離 g-C3N4塊材,總共運用兩個步驟來製備Mesoporous TiO2 beads,使用水熱法製備α-MoO3 nanobelts,再製備兩組具有不同組成的二元成分光催化劑TiO2 mesoporous beads/exfoliated g-C3N4s和α-MoO3 nanobelts/ exfoliated g-C3N4 。基於這些二元組分光催化劑的性能,再合成三元復合光催化劑α-MoO3 nanobelts/ mesoporous TiO2 beads/exfoliated g-C3N4,最後使用可見光及UV光降解甲基藍以分析二元、三元組分光催化劑的光催化性能。
英文摘要 Multi-component photocatalysts based on g-C3N4 was synthesized to enhance the photocatalytic performance of g-C3N4. Exfoliated g-C3N4 was fabricated by heating melamine at 550°C, followed by the use of hydrogen peroxide (H2O2) to exfoliate bulk g-C3N4. Mesoporous TiO2 beads were prepared using a two-step process. α-MoO3 nanobelts were made by the hydrothermal method. Two groups of binary-component photocatalysts of TiO2 mesoporous beads/exfoliated g-C3N4, and α-MoO3 nanobelts/ exfoliated g-C3N4 having various compositions were then made. Based on the performance of these binary-component photocatalysts, α-MoO3 nanobelts/ mesoporousTiO2 beads/exfoliated g-C3N4 ternary composite photocatalysts were synthesized. The photocatalytic performance of all the single-binary and ternary component photocatalysts was evaluated by degrading methyl blue under both UV and visible light irradiations.
論文目次 ACKNOWLEDGMENT i
摘要 ii
ABSTRACT iii
CONTENTS iv
LIST OF TABLES viii
LIST OF FIGURES ix
CHAPTER 1 INTRODUCTION 1
1.1 Introduction 1
1.1.1 Motivations 1
1.1.2 Objectives 1
1.2 Background 2
1.2.1 General Back Ground on Photocatalysis 2
1.2.2 Definition of Photocatalysis 2
1.2.3 Mechanism of Photocatalysis 3
1.2.4 Graphitic Carbon Nitride 5
1.3 Literature review 12
1.3.1 Increasing Surface Area 12
1.3.2 Addition of the other semiconductor materials 18
CHAPTER 2 EXPERIMENTAL METHODS 27
2.1 Material 27
2.2 Sample Synthesis 27
2.2.1 Synthesis of exfoliated g-C3N4 27
2.2.2 Synthesis of α MoO3 nanobelts 28
2.2.3 Synthesis of α MoO3 nanobelts/ exfoliated g- C3N4 28
2.2.4 Synthesis of TiO2 mesoporous beads 29
2.2.5 Synthesis of TiO2 mesoporous beads/exfoliated g-C3N4 30
2.2.6 Synthesis of α MoO3 nanobelts / TiO2 beads/ exfoliated g-C3N4 30
2.3 Characterization 31
2.3.1 X-Ray Diffraction (XRD) 31
2.3.2 X-Ray Photoemission Spectroscopy (XPS) 31
2.3.3 Scanning Electron Microscopy (SEM) 32
2.3.4 UV-Visible Spectroscopy (UV-vis) 32
2.3.5 Photoluminescence Spectroscopy (PL) 32
2.3.6 Photocatalytic Performance Measurement 32
CHAPTER 3 RESULTS AND DISCUSSION 33
3.1 Exfoliated Graphitic Carbon Nitride Photocatalyst 33
3.1.1 XRD Analysis 33
3.1.2 SEM Analysis 34
3.1.3 BET Analysis 34
3.1.4 FTIR Analysis 35
3.1.5 XPS Analysis 35
3.1.6 UV-Visible Absorption Analysis 37
3.1.7 Photocatalytic Degradation Analysis 38
3.1.8 PL Analysis 40
3.2 α – MoO3 nanobelts Photocatalyst 41
3.2.1 XRD Analysis 41
3.2.2 SEM Analysis 42
3.2.3 UV-Vis Absorption Analysis 43
3.2.4 Photocatalytic Degradation Analysis 43
3.3 TiO2 mesoporous beads Photocatalyst 45
3.3.1 XRD Analysis 45
3.3.2 SEM Analysis 45
3.3.3 UV-Vis Absorption Analysis 46
3.3.4 Photocatalytic Degradation Analysis 47
3.4 TiO2 beads/ exfoliated g-C3N4 Composite Photocatalyst 48
3.4.1 XRD Analysis 48
3.4.2 XPS Analysis 49
3.4.3 UV-Visible Absorption Analysis 54
3.4.4 SEM Analysis 55
3.4.5 PL Analysis 56
3.4.6 Photocatalytic Degradation Analysis 58
3.5 α– MoO3 nanobelts/ Exfoliated g-C3N4 (CNH) Photocatalyst 61
3.5.1 XRD Analysis 61
3.5.2 XPS Analysis 62
3.5.3 SEM Analysis 70
3.5.4 UV- Vis Absorption Analysis 72
3.5.5 PL Analysis 73
3.5.6 Photocatalytic Degradation Analysis 74
3.6 MoO3 α-nanobelts/ mesoporous TiO2 beads/ exfoliated g-C3N4 Composite Photocatalyst 80
3.6.1 XRD Analysis 80
3.6.2 SEM Analysis 81
3.6.3 XPS Analysis 82
3.6.4 UV-Absorption Analysis 83
3.6.5 PL Analysis 84
3.6.6 Photocatalytic degradation Analysis 85
3.7 Previous Works (Ppy material) 89
CHAPTER 4 CONCLUSIONS 91
REFERENCES 92
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