https://scholars.lib.ntu.edu.tw/handle/123456789/575868
標題: | A heteroelectrode structure for solar water splitting: Integrated cobalt ditelluride across a TiO2-passivated silicon microwire array | 作者: | Bazri B Lin Y.-C Lu T.-H CHIH-JUNG CHEN Kowsari E Hu S.-F Liu R.-S. RU-SHI LIU |
關鍵字: | Atomic layer deposition; Cobalt; Passivation; Silicon; Atomic layer deposited; Electrocatalytic efficiencies; Hydrogen evolution reactions; Photocurrent decay; Photocurrent density; Silicon microwire; Solar water splitting; Water splitting reactions; Titanium dioxide | 公開日期: | 2017 | 卷: | 7 | 期: | 7 | 起(迄)頁: | 1488-1496 | 來源出版物: | Catalysis Science and Technology | 摘要: | Cobalt ditelluride as a cocatalyst on the surface of a silicon microwire array (Si-MWs) and as a heterocathode structure for the hydrogen evolution reaction was synthesized via a one-step drop-casting method. The improvement in the photo-electrocatalytic efficiency, including the 0.66 V anodic shift in the onset potential and the -24.0 mA cm-2 photocurrent density, is comparable to that of other cocatalyst systems for water reduction. The photocurrent decay of CoTe2@Si-MWs further improved to roughly -10 mA cm-2 by deposition of 10 nm atomic-layer-deposited TiO2 on the Si-MW photocathode for 67 min. Outcomes of this study may demonstrate the possibility of introducing a new class of telluride cocatalyst heterocathode system as an alternative to noble metals in facilitating the water splitting reaction. The cobalt ditelluride across the TiO2-passivated Si-MWs heterocathode is reported to have an effective response to solar water reduction for the first time. ? The Royal Society of Chemistry 2017. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85019630923&doi=10.1039%2fc6cy02688e&partnerID=40&md5=e38ba8cbd1772713788c99220ca39829 https://scholars.lib.ntu.edu.tw/handle/123456789/575868 |
ISSN: | 20444753 | DOI: | 10.1039/c6cy02688e | SDG/關鍵字: | Atomic layer deposition; Cobalt; Passivation; Silicon; Atomic layer deposited; Electrocatalytic efficiencies; Hydrogen evolution reactions; Photocurrent decay; Photocurrent density; Silicon microwire; Solar water splitting; Water splitting reactions; Titanium dioxide |
顯示於: | 化學系 |
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