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研究生：	楊氏金燕 Yen, Duong Thi Kim
論文名稱：	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 Enhanced photocatalytic performance of g-C3N4 through the addition of α-MoO3 nanobelts and TiO2 mesoporous beads
指導教授：	丁志明 Ting, Jyh-Ming
學位類別：	碩士 Master
系所名稱：	工學院 - 材料科學及工程學系 Department of Materials Science and Engineering
論文出版年：	2018
畢業學年度：	106
語文別：	英文
論文頁數：	96
外文關鍵詞：	MoO3 /g-C3N4, Carbon nitride, TiO2 mesoporous beads
相關次數：	點閱：72 下載：3
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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。

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.

ACKNOWLEDGMENT	i
摘要	ii
ABSTRACT	iii
CONTENTS	iv
LIST OF TABLES	viii
LIST OF FIGURES	ix
CHAPTER 1	INTRODUCTION	1
1	Introduction	1
1.1	Motivations	1
1.2	Objectives	1
2	Background	2
2.1	General Back Ground on Photocatalysis	2
2.2	Definition of Photocatalysis	2
2.3	Mechanism of Photocatalysis	3
2.4	Graphitic Carbon Nitride	5
3	Literature review	12
3.1	Increasing Surface Area	12
3.2	Addition of the other semiconductor materials	18
CHAPTER 2	EXPERIMENTAL METHODS	27
1	Material	27
2	Sample Synthesis	27
2.1	Synthesis of exfoliated g-C3N4	27
2.2	Synthesis of α MoO3 nanobelts	28
2.3	Synthesis of α MoO3 nanobelts/ exfoliated g- C3N4	28
2.4	Synthesis of TiO2 mesoporous beads	29
2.5	Synthesis of TiO2 mesoporous beads/exfoliated g-C3N4	30
2.6	Synthesis of α MoO3 nanobelts / TiO2 beads/ exfoliated g-C3N4	30
3	Characterization	31
3.1	X-Ray Diffraction (XRD)	31
3.2	X-Ray Photoemission Spectroscopy (XPS)	31
3.3	Scanning Electron Microscopy (SEM)	32
3.4	UV-Visible Spectroscopy (UV-vis)	32
3.5	Photoluminescence Spectroscopy (PL)	32
3.6	Photocatalytic Performance Measurement	32
CHAPTER 3	RESULTS AND DISCUSSION	33
1	Exfoliated Graphitic Carbon Nitride Photocatalyst	33
1.1	XRD Analysis	33
1.2	SEM Analysis	34
1.3	BET Analysis	34
1.4	FTIR Analysis	35
1.5	XPS Analysis	35
1.6	UV-Visible Absorption Analysis	37
1.7	Photocatalytic Degradation Analysis	38
1.8	PL Analysis	40
2	α – MoO3 nanobelts Photocatalyst	41
2.1	XRD Analysis	41
2.2	SEM Analysis	42
2.3	UV-Vis Absorption Analysis	43
2.4	Photocatalytic Degradation Analysis	43
3	TiO2 mesoporous beads Photocatalyst	45
3.1	XRD Analysis	45
3.2	SEM Analysis	45
3.3	UV-Vis Absorption Analysis	46
3.4	Photocatalytic Degradation Analysis	47
4	TiO2 beads/ exfoliated g-C3N4 Composite Photocatalyst	48
4.1	XRD Analysis	48
4.2	XPS Analysis	49
4.3	UV-Visible Absorption Analysis	54
4.4	SEM Analysis	55
4.5	PL Analysis	56
4.6	Photocatalytic Degradation Analysis	58
5	α– MoO3 nanobelts/ Exfoliated g-C3N4 (CNH) Photocatalyst	61
5.1	XRD Analysis	61
5.2	XPS Analysis	62
5.3	SEM Analysis	70
5.4	UV- Vis Absorption Analysis	72
5.5	PL Analysis	73
5.6	Photocatalytic Degradation Analysis	74
6	MoO3 α-nanobelts/ mesoporous TiO2 beads/ exfoliated g-C3N4 Composite Photocatalyst	80
6.1	XRD Analysis	80
6.2	SEM Analysis	81
6.3	XPS Analysis	82
6.4	UV-Absorption Analysis	83
6.5	PL Analysis	84
6.6	Photocatalytic degradation Analysis	85
7	Previous Works (Ppy material)	89
CHAPTER 4	CONCLUSIONS	91
REFERENCES	92
                                    

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校內：2019-08-31公開
校外：2019-08-31公開

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