Title

Two-dimensional hybrid photocatalyst for efficient CO2 conversion to hydrocarbon fuels

DGIST Authors

Gong, Eun Hee ; Kim, Soonhyun ; In, Su-Il

Advisor

인수일

Co-Advisor(s)

Soonhyun Kim

Issued Date

2020

Awarded Date

2020-02

Citation

Eun Hee Gong. (2020). Two-dimensional hybrid photocatalyst for efficient CO2 conversion to hydrocarbon fuels. doi: 10.22677/Theses.200000291454

Type

Thesis

Description

Photocatalytic CO2 conversion, Photocatalysts, Two-dimensional materials, Transition metal oxide, Heterojunction, 광촉매적 이산화탄소 전환, 광촉매, 이차원 물질, 전이금속, 이종 접합

Table Of Contents

Chapter 1: Introduction 1
1.1 Effect of energy on the environment 1
1.2 Greenhouse gas, CO2 3
1.3 Artificial photosynTheses 4
1.4 Photocatalytic CO2 reduction 4
1.4.1 Principles of photocatalytic CO2 reduction 4
1.4.2 The challenges of CO2 photoreduction 6
1.4.3 Reduction pathways for CO2 reduction 8
1.5 Two-dimensional materials 11
1.5.1 Two-dimensional materials 11
1.5.2 Two-dimensional photocatalyst 11
1.6 Research Approaches 12
1.7 References 14
Chapter 2. Characterization and analysis tools 17
2.1 X-ray diffraction (XRD) 17
2.2 Transmission electron microscopy (TEM) 19
2.3 Scanning Electron Microscope (SEM) 20
2.4. Ultraviolet-Visible diffuse reflectance spectroscopy (UV-Vis DRS) 22
2.5 Photoluminescence (PL) Spectroscopy 24
2.6 X-Ray photoelectron spectroscopy (XPS) 25
2.7 Gas Chromatography (GC) 26
2.8 Gas Chromatography-Mass spectroscopy (GC-MS) 29
2.9 References 31
Chapter 3. Photocatalytic CO2 Conversion to hydrocarbon fuels with visible activated two-dimensional Mn3O4-TiO2 photocatalyst 32
3.1 Introduction 32
3.2 Experimental section 35
3.2.1 Materials and Reagents 35
3.2.2 SynTheses of MnO2 nanosheet 35
3.2.3 SynTheses of hybrid Mn3O4-TiO2 (MT) photocatalysts 35
3.2.4. Characterization 36
3.2.5. Photocatalytic CO2 conversion 37
3.2.6 Isotope experiment 38
3.3 Results and discussion 39
3.3.1 Crystallographic study 39
3.3.2 Morphological analysis 40
3.3.3 Optical properties 42
3.3.4 X-ray photoelectron spectroscopy (XPS) analysis 43
3.3.5 N2-physisorption analysis 46
3.3.6 Photocatalytic CO2 conversion 47
3.3.7 CO2 conversion mechanism 50
3.4 Conclusions 53
3.5 References 54
Appendix 1: Abstract in Korean 57

URI

http://dgist.dcollection.net/common/orgView/200000291454
http://hdl.handle.net/20.500.11750/12000

DOI

10.22677/Theses.200000291454

Degree

Master

Department

Energy Science&Engineering

Publisher

DGIST

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