Decomposition of water over picene derivatives photocatalyst under visible light irradiation
作者:Yuichi Ichihashi、Tomoya Sekiguchi、Yuya Tokui、Rintaro Hori、Shota Naito、Yasuko Koshiba、Youhei Sutani、Kenji Ishida、Keita Taniya、Satoru Nishiyama
DOI:10.1016/j.cattod.2022.06.008
日期:2023.2
(CN-picene), a picene derivative that absorbs visible-light, was synthesized and its photocatalytic activity for hydrogen production via water decomposition under visible-light irradiation was evaluated. A CN-picene thin-film deposited on a quartz substrate (CNp/Q) was produced by thermal evaporation under vacuum. Hydrogen formation was observed by subjecting CNp/Q to visible-light irradiation in the presence
合成了吸收可见光的蒎烯衍生物 5,8-二氰基蒌烯 (CN-picene),并评估了其在可见光照射下通过水分解制氢的光催化活性。在真空下通过热蒸发制备沉积在石英基板 (CNp/Q) 上的 CN-picene 薄膜。通过在水存在下对 CNp/Q 进行可见光照射来观察氢的形成。经 D 2质谱分析证实O 产生的氢气来源于水。还研究了具有不同膜厚度的 CNp/Q 光催化剂的水分解;氢形成活性随着薄膜厚度的增加而增加。此外,扫描电子显微镜测量表明,CN-picene 由于其聚集而不均匀地沉积在石英基板上。CN-picene薄膜的表面粗糙度随着厚度的增加而增加,从而增加了其表面积;因此,具有较厚膜的 CNp/Q 催化剂比其较薄的对应物具有更高的水分解活性。