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Study of Hybrid Photocatalytic System for CO2 Reduction into Hydrocarbon Fuels under Solar Irradiation

Title
Study of Hybrid Photocatalytic System for CO2 Reduction into Hydrocarbon Fuels under Solar Irradiation
Translated Title
태양빛을 이용한 이산화탄소의 탄화수소연료 전환을 위한 융합형 광촉매 시스템의 연구
Authors
Park, Seung Min
DGIST Authors
Park, Seung Min; In, Su Il; Park, Yi Seul
Advisor(s)
In, Su Il
Co-Advisor(s)
Park, Yi Seul
Issue Date
2015
Available Date
2015-01-12
Degree Date
2015. 2
Type
Thesis
Keywords
CN-TNTChlorine doped TiO2copper oxidep-n heterojunctionphotocatalytic CO2 reduction탄소와 질소가 동시 도핑된 이산화티타늄 나노튜브염소 도핑 이산화티타늄산화구리p-n 헤테로접합광촉매적 이산화탄소 환원
Abstract
Recently, the needs for sustainable energy are increased with the energy shortage and environmental pollution. The research on photocatalytic CO2 reduction is one of the promising research fields to address these needs. In this study, a hybrid photocatalytic system for CO2 reduction into hydrocarbon fuels was researched to enhance CO2 reduction efficiency by semiconductor nanoparticles and titanate (TiO2). One is that C, N co-doped sodium titanate nanotube (C, N-TNT) was synthesized by a hydrothermal method and calcination treatment. The photocatalytic activities of C, N-TNT were evaluated by methylene blue degradation and CO2 reduction to hydrocarbon fuel under simulated solar light irradiation. The C,N-TNT1 (Urea/TiO2 =10) showed highest degradation rate for photocatalytic dye degradation. On the other hand, it showed highest CH4 production rate for C, N-TNT06. Another is that hybrid CuO-TiO2-xClx heterostructured composites was prepared by a novel synthetic method and its photocatalytic activity was evaluated with CO2 reduction by gas chromatogram (GC). A strategy to enhance the CO2 reduction efficiency is to couple CuO with Cl doped TiO2 to form p-n heterojunction that can enhance a charge separation of the photo-generated charge carriers. CT07 shows the dramatically enhanced CO2 reduction activity. Recently, the needs for sustainable energy are increased with the energy shortage and environmental pollution. The research on photocatalytic CO2 reduction is one of the promising research fields to address these needs. In this study, a hybrid photocatalytic system for CO2 reduction into hydrocarbon fuels was researched to enhance CO2 reduction efficiency by semiconductor nanoparticles and titanate (TiO2). ⓒ 2015 DGIST
Table Of Contents
1.Scope and Organization of the Thesis 1 -- 2.Introduction 1 -- 2.1 Research Background 1 -- 2.2 References 5 -- 3.Equipment 6 -- 3.1 UV-Visible-Near Intrared absorption spectroscopy (UV-Vis-NIR) 6 -- 3.2 X-ray Diffractometer (XRD) 7 -- 3.3 X-ray Photoelectron spectrometer (XPS) 8 -- 3.4 Transmission Electron Microscope (TEM) 9 -- 3.5 Brunauer-Emmett-Teller (BET) Specific Surface Area Analyzer 10 -- 3.6 Gas Chromatography (GC) 11 -- 3.7 References 13 -- 4.Photocatalytic Conversion of CO2 gas to Hydrocarbon Fuel using Carbon and Nitrogen co-doped Sodium Titanate Nanotubes 14 -- 4.1 Introduction 14 -- 4.2 Experimental Section 15 -- 4.2.1 Materials 15 -- 4.2.2 Methods 15 -- 4.2.3 Analysis 17 -- 4.3 Results & Discussion 18 -- 4.4 Conclusions 29 -- 4.5 References 30 -- 5.Hybrid CuO-TiO2-xClx Heterostructured Composites for CO2 Reduction by simulated Solar Irradiation 33 -- 5.1 Introduction 33 -- 5.2 Experimental Section 34 -- 5.2.1 Materials 34 -- 5.2.2 Methods 34 -- 5.2.3 Analysis 35 -- 5.3 Results & Discussion 36 -- 5.4 Conclusions 44 -- 5.5 References 45 -- 6.Conclusions 48
URI
http://dgist.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000001914564
http://hdl.handle.net/20.500.11750/1382
DOI
10.22677/thesis.1914564
Degree
Master
Department
Energy Systems Engineering
University
DGIST
Files:
Collection:
Energy Systems EngineeringThesesMaster


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