用于聚（三嗪酰亚胺）晶体高效光催化水分解的Rh/Cr O和CoO助催化剂
Rh/Cr O and CoO Cocatalysts for Efficient Photocatalytic Water Splitting by Poly (Triazine Imide) Crystals.
作者信息
Liu Minghui, Zhang Guigang, Liang Xiaocong, Pan Zhiming, Zheng Dandan, Wang Sibo, Yu Zhiyang, Hou Yidong, Wang Xinchen
机构信息
State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China.
出版信息
Angew Chem Int Ed Engl. 2023 Sep 11;62(37):e202304694. doi: 10.1002/anie.202304694. Epub 2023 Jun 1.
In situ photo-deposition of both Pt and CoO cocatalysts on the facets of poly (triazine imide) (PTI) crystals has been developed for photocatalytic overall water splitting. However, the undesired backward reaction (i.e., water formation) on the noble Pt surface is a spontaneously down-hill process, which restricts their efficiency to run the overall water splitting reaction. Herein, we demonstrate that the efficiency for photocatalytic overall water splitting could be largely promoted by the decoration of Rh/Cr O and CoO as H and O evolution cocatalysts, respectively. Results reveal that the dual cocatalysts greatly extract charges from bulk to surface, while the Rh/Cr O cocatalyst dramatically restrains the backward reaction, achieving an apparent quantum efficiency (AQE) of 20.2 % for the photocatalytic overall water splitting reaction.
已开发出在聚（三嗪酰亚胺）（PTI）晶体表面原位光沉积Pt和CoO助催化剂用于光催化全分解水。然而，贵金属Pt表面上不需要的逆反应（即水的生成）是一个自发的下坡过程，这限制了它们进行全分解水反应的效率。在此，我们证明，分别用Rh/Cr₂O₃和CoO作为析氢和析氧助催化剂进行修饰，可以大大提高光催化全分解水的效率。结果表明，双助催化剂极大地将电荷从体相提取到表面，而Rh/Cr₂O₃助催化剂显著抑制了逆反应，实现了光催化全分解水反应20.2%的表观量子效率（AQE）。
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