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금속담지 된 수소제조용 TiO2 나노튜브 전극의 광활성 연구
이재민 ( Jae Min Lee ), 이창하 ( Chang Ha Lee ), 윤재경 ( Jae Kyung Yoon ), 주현규 ( Hyun Ku Joo ) 한국수소및신에너지학회(구 한국수소에너지학회) 2011 한국수소 및 신에너지학회논문집 Vol.22 No.5
The purpose of this study was to correlate between photoelectrochemcial hydrogen production rate and electron transfer with various types of metal doped TiO2 nanotubes as photoanodes. In order to fabricate light sensitized photoanode, CdS, WO3, and Pt were doped by electrodeposition method. As the results of experiments, the electron transfer was favorable from higher position to lower position of conduction band (CB). In consequence, the higher hydrogen production rate was as follows, CdS/TiO2 (100 umol/hr-cm2) > WO3/TiO2 (20 umol/hr-cm2) > Pt/TiO2 (10 umol/hr-cm2). The surface characterizations exhibited that crystal structure, morphological and electrical properties of various metal depoed TiO2 nanotubes by the results of SEM, TEM, XPS, and photocurrent measurements.