Tandem Structure of QD Cosensitized TiO2 Nanorod Arrays for Solar Light Driven Hydrogen Generation
學年 104
學期 1
出版（發表）日期 2015-11-30
作品名稱 Tandem Structure of QD Cosensitized TiO2 Nanorod Arrays for Solar Light Driven Hydrogen Generation
作品名稱（其他語言）
著者 Li Cheng Kao; Sofia Ya Hsuan Liou; Chung Li Dong; Ping Hung Yeh; Chi Liang Chen
單位
出版者
著錄名稱、卷期、頁數 ACS Sustainable Chemistry & Engineering 4(1), pp.210-218
摘要 One-dimensional (1D) TiO2 nanorod arrays as photoelectrode have great potential for solar photoelectrochemical (PEC) hydrogen generation. However, the large band gap and Ti-growth unit preference of rutile TiO2 limit its solar light utilizing and multijunction nanostructure photoelectrode design. This paper presents a double-sided tandem structure for quantum dot cosensitized photoelectrodes with excellent solar PEC hydrogen generation. TiO2 nanorod arrays were grown directly on transparent and conductive glass substrates by hydrothermal method and then coated with CdS or CdSe as photosensitizer to extend successfully their photoresponse to visible light. Given the transparent substrate, TiO2 nanorod arrays could be grown on both sides, allowing the formation of the tandem structure of cosensitized CdS and CdSe with high reactivity under visible light. The double-sided CdS and CdSe cosensitized 1D TiO2 photoelectrode exhibited the highest solar-to-hydrogen conversion efficiency of 2.78% and pronounced enhancement of simulated photoconversion efficiency. This success in fabricating a double-sided tandem structure 1D TiO2 photoelectrode provides the opportunity for composite material design based on different band gaps, and this photoelectrode could be applied to other PEC applications.
關鍵字 Titanium dioxide;Nanorod;Quantum dot;Water splitting;Hydrogen generation
語言 en_US
ISSN 2168-0485
期刊性質 國內
收錄於 SCI
產學合作
通訊作者
審稿制度 否
國別 TWN
公開徵稿
出版型式 ,電子版
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機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/110158 )