可见光“全”分解水的类纳光电化学(PEC)电池模型

doi:10.7517/j.issn.1674-0475.2015.02.099

摘要/Abstract

摘要：

本文在对新型TiO₂的光、电性质和形貌学研究基础上,首次提出"可见光‘全’分解水的类纳PEC电池模型",将水的redox反应分别放在新型TiO₂纳米管内、外表面上进行.模型还提出以合适电化学性质的可变价金属氧化物作为放氧催化剂,表面晶格氧参与放O₂过程,克服"全"光解水中四电子转移放O₂的困难.此模型期望更多同行进行探索、验证.

关键词: 纳米管钛酸, 纳米管新型TiO₂, 可见光分解水, 类纳PEC电池模型

Abstract:

A nano photoelectrochemical (PEC) cell-like model for visible-light-responded over-all splitting of water was proposed based on the investigation of the photo-electric properties and morphology of the novel TiO₂. In this model, the reduction and oxidation of water proceeds on the inner and outer surface of novel TiO₂ nanotubes, respectively. The variable-valence metal oxide with suitable electrochemical properties could be used as the water oxidation catalyst, and its surface lattice oxygen would take part in O₂ evolution. The difficulty of overall water splitting, i.e., evolving of O₂ while needs to transfer four electrons, might be overcome. We want that this nano PEC cell-like model will be explored and verified by colleagues in the future.

Key words: nanotube titanic acid, nanotube novel TiO₂, visible-light water splitting, nano PEC cell-like model

李秋叶, 金振声. 可见光“全”分解水的类纳光电化学(PEC)电池模型[J]. 影像科学与光化学, 2015, 33(2): 99-107.

LI Qiuye, JIN Zhensheng. Nano Photoelectrochemical Cell-like Model for Visible-light-responded Overall Splitting of Water[J]. Imaging Science and Photochemistry, 2015, 33(2): 99-107.

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