https://scholars.lib.ntu.edu.tw/handle/123456789/396023
標題: | Tandem Structure of QD Cosensitized TiO2 Nanorod Arrays for Solar Light Driven Hydrogen Generation | 作者: | YA-HSUAN LIOU | 關鍵字: | Hydrogen generation; Nanorod; Quantum dot; Titanium dioxide; Water splitting | 公開日期: | 2016 | 卷: | 4 | 期: | 1 | 起(迄)頁: | 210-218 | 來源出版物: | ACS Sustainable Chemistry and Engineering | 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. © 2015 American Chemical Society. |
URI: | http://www.scopus.com/inward/record.url?eid=2-s2.0-84953301594&partnerID=MN8TOARS http://scholars.lib.ntu.edu.tw/handle/123456789/396023 |
DOI: | 10.1021/acssuschemeng.5b01010 | SDG/關鍵字: | Cadmium sulfide; Efficiency; Energy gap; Hydrogen; Light; Nanocrystals; Nanorods; Oxide minerals; Photoelectrochemical cells; Photosensitizers; Semiconductor quantum dots; Solar power generation; Substrates; Titanium dioxide; Hydrogen generations; Hydrothermal methods; Photoconversion efficiency; Photoelectrochemicals; Solar-light-driven; Solar-to-hydrogen conversions; Transparent substrate; Water splitting; Hydrogen production |
顯示於: | 地質科學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。