Unveiling the influence of 5,10,15,20-tetrakis (4-carboxyl phenyl) porphyrin on the photogenerated charge behavior and photoelectrochemical water oxidation of hematite photoanode

被引：23
作者：
Bu, Qijing [1 ,2 ]
Liu, Xiangwei [2 ]
Zhao, Qifeng [2 ]
Lu, Guang [2 ]
Zhu, Xixi [2 ]
Liu, Qingyun [1 ,2 ]
Xie, Tengfeng [3 ]
机构：
[1] Shandong Univ Sci & Technol, Coll Energy & Min Engn, Qingdao 266590, Peoples R China
[2] Shandong Univ Sci & Technol, Coll Chem & Biol Engn, Qingdao 266590, Peoples R China
[3] Jilin Univ, Coll Chem, Changchun 130012, Peoples R China
来源：
JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2022年 / 626卷
基金：
中国国家自然科学基金;
关键词：
Porphyrin; Photogenerated charge behavior; Photoelectrochemical water oxidation; Photoanode; SENSITIZED SOLAR-CELLS; GRAPHENE OXIDE; CO-PI; EFFICIENT; PERFORMANCE; COCATALYST; TI-FE2O3; STRATEGY; NANOWIRE; CATALYST;
D O I：
10.1016/j.jcis.2022.06.084
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Coupling porphyrins with semiconductors is demonstrated as one of effective means to facilitate the separation of photogenerated charge in dye-sensitized solar cells as well as photocatalytic hydrogen production. However, there are limited reports about exploring the effect of porphyrin on the behavior of photogenerated charges and photoelectrochemical (PEC) water oxidation performance. Herein, we have built a hybrid photoanode containing Ti doped a-Fe2O3 (Ti-Fe2O3), 5,10,15,20-tetrakis (4-carboxyl phenyl) porphyrin (H2TCPP) and cobalt phosphate (CoPi) cocatalyst. Because of the appropriate band alignment of Ti-Fe2O3, H2TCPP and CoPi, the photogenerated holes are transferred directionally from Ti-Fe2O3 to CoPi across H2TCPP, which boosts the separation efficiency of CoPi/H2TCPP/Ti-Fe2O3 in turn. Meanwhile, CoPi/H2TCPP/Ti-Fe2O3 possesses higher injection efficiency as well. Under the double guarantee of high separation efficiency and injection efficiency, CoPi/H2TCPP/Ti-Fe2O3 yields an impressive
引用
收藏
页码：345 / 354
页数：10
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