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  Department of Energy Science and Engineering Theses Ph.D.

Photoelectrochemical Water Splitting Strategy for Green Hydrogen Production Using Eco-friendly Chalcogenide Materials

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dc.contributor.advisor 최종민 -
dc.contributor.author Jin Young Park -
dc.date.accessioned 2026-01-23T10:59:59Z -
dc.date.available 2026-01-23T10:59:59Z -
dc.date.issued 2025 -
dc.identifier.uri https://scholar.dgist.ac.kr/handle/20.500.11750/59789 -
dc.identifier.uri http://dgist.dcollection.net/common/orgView/200000890690 -
dc.description Photoelectrochemistry, chalcogenides, nanocrystals, silver bismuth sulfide, titanium oxide, heterojunctions -
dc.description.tableofcontents List of Contents
Abstract i
List of contents ii
List of contents iv

Ⅰ. Introduction 1

ⅠⅠ. Theoretical Background 6
2.1 Principle of Photoelectrochemical Hydrogen Production 6
2.2 Physical and Photoelectrochemical Properties of AgBiS2 Nanocrystals 10
2.3 Limitations of Standalone Nanomaterials in PEC Applications 12
2.4 Theoretical Background of Heterojunction Electrodes Based on Metal Oxides 14
2.5 Heterojunction Techniques: EPD and Linker-Assist Method 17

ⅠⅠⅠ. Experimental Section 19
3.1 Chemicals and Materials 19
3.2 Synthesis of AgBiS2 Nanocrystals 20
3.3 Fabrication of PEC Electrodes Using AgBiS2 Nanocrystals 20
3.4 PEC measurement and analysis 22

ⅠV. Results and Discussion (I) 27
4.1 Properties of AgBiS2 nanocrystals 27
4.2 Preparation process for the AgBiS2 nanocrystal photoanodes for PEC water splitting 34
4.3 Effect of different ligands on AgBiS2 nanocrystal photoanodes on their photoelectrochemical water splitting performance 39
4.4 Visible and near-IR light usability of various photoanodes in a photoelectrochemical water splitting system 50

V. Results and Discussion (II) 66
5.1 Metal Oxide Heterojunction Electrode 66
5.2 Structural and Optical Characterization of AgBiS2/TiO2 Heterojunction Photoelectrodes 69
5.3 Surface Chemistry and Ligand Evaluation of AgBiS2/TiO2 Heterojunctions 76
5.4 Photoelectrochemical Performance of TiO2/AgBiS2 Heterojunction Photoanodes 82

VI. Summary 91		 -
dc.format.extent 98 -
dc.language eng -
dc.publisher DGIST -
dc.title Photoelectrochemical Water Splitting Strategy for Green Hydrogen Production Using Eco-friendly Chalcogenide Materials -
dc.title.alternative 친환경 칼코제나이드 물질을 이용한 녹색 수소 생산을 위한 광전기화학적 물 분해 전략 -
dc.type Thesis -
dc.identifier.doi 10.22677/THESIS.200000890690 -
dc.description.degree Doctor -
dc.contributor.department Department of Energy Science and Engineering -
dc.contributor.coadvisor Jiwoong Yang -
dc.date.awarded 2025-08-01 -
dc.publisher.location Daegu -
dc.description.database dCollection -
dc.citation XT.ED 박78 202508 -
dc.date.accepted 2025-07-21 -
dc.contributor.alternativeDepartment 에너지공학과 -
dc.subject.keyword Photoelectrochemistry, chalcogenides, nanocrystals, silver bismuth sulfide, titanium oxide, heterojunctions -
dc.contributor.affiliatedAuthor Jin Young Park -
dc.contributor.affiliatedAuthor Jongmin Choi -
dc.contributor.affiliatedAuthor Jiwoong Yang -
dc.contributor.alternativeName 박진영 -
dc.contributor.alternativeName Jongmin Choi -
dc.contributor.alternativeName 양지웅 -
dc.rights.embargoReleaseDate 2029-08-31 -
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