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

Title
Two-dimensional hybrid photocatalyst for efficient CO2 conversion to hydrocarbon fuels
Authors
Eun Hee Gong
DGIST Authors
Gong, Eun Hee; Kim, SoonhyunIn, Su-Il
Advisor(s)
인수일
Co-Advisor(s)
Soonhyun Kim
Issue Date
2020
Available Date
2020-06-23
Degree Date
2020-02
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
University
DGIST
Related Researcher
Files:
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Collection:
Department of Energy Science and EngineeringThesesMaster


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