정현민 김민서 조혜경 주현규 강경수 이광복 김한성 윤재경 2024-01-19T08:31:36Z 2024-01-19T08:31:36Z 2023-11-02 2023-10 1738-7264 https://pubs.kist.re.kr/handle/201004/113185 Holmium-doped TiO2 nanotubes (Ho-TNTs) were manufactured through anodization treatment and electrochemical deposition, and optimization experiments were conducted using various Holmium doping concentrations and time as variables. Surface as well as electrochemical characteristics were analyzed to study the prepared photocatalysts. Ho-TNTs were found to exist only in anatase phase through X-ray diffraction analysis. Ho-TNTs with 0.01 wt% 100 seconds shows a photocurrent density of 3.788 mA/cm2 and an effective photo- conversion efficiency (PCE) of 4.30%, which is more efficient than pure TiO2 nanotubes (pure-TNTs) (at bias potential 1.5 V vs. Hg/HgO). The photocatalytic activity of the aforementioned Ho-TNTs for hydrogen production was evaluated with the result of -29.20 μmol/h·cm2. Korean 한국수소및신에너지학회 홀뮴 도핑된 TiO2를 이용한 광전기화학 수소 제조 Photoelectrochemical Hydrogen Production with Holmium-doped TiO2 Article 10.7316/JHNE.2023.34.5.413 2 한국수소및신에너지학회논문집, v.34, no.5, pp.413 - 420 한국수소및신에너지학회논문집 34 5 413 420 N kci ART003009404 Photoelectrochemical water splitting Hydrogen Holmium photocatalyst 광전기화학적 물분해 수소 홀뮴 광촉매