Graphitic C3N4 modified by Ru(II)-based dyes for photocatalytic H2 evolution

被引：24
作者：
Chen, Yihang [1 ]
Liu, Yanfei [1 ]
Ma, Zhen [1 ,2 ]
机构：
[1] Fudan Univ, Shanghai Key Lab Atmospher Particle Pollut & Prev, Dept Environm Sci & Engn, Shanghai 200433, Peoples R China
[2] Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2021年 / 614卷 / 614期
关键词：
Visible light; Photocatalysis; g-C3N4; Ruthenium (II)-based dye; H-2; evolution; CARBON NITRIDE NANOSHEETS; HYDROGEN EVOLUTION; EOSIN Y; G-C3N4; WATER; HETEROJUNCTION; NANOCOMPOSITES; SEMICONDUCTOR; DEGRADATION; COCATALYSTS;
D O I：
10.1016/j.colsurfa.2020.126119
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：
Protonated graphitic C3N4 (pCN) was modified by cis-bis (isothiocyanate)-bis (2,2'-bipyridyl-4,4' -dicarboxylate) ruthenium (II) (N3) and bis (tetrabutylammonium) dihydrogen bis (isothiocyanate) bis (2,2'-bipyridyl-4,4 ''-dicarboxylate) ruthenium (II) (N719). The catalysts have strong ability in absorbing visible light (lambda > 420 nm), showing significantly superior activity than pCN in water splitting for H2 production. The average H-2 evolution rates achieved by using N3/pCN and N719/pCN as catalysts and using Pt as a co-catalyst reached 1490.7 and 2500.1 mu mol h(-1) g(-1), respectively, much higher than the rate (592.2 mu mol h(-1) g(-1)) achieved by using the pCN-Pt combination. A feasible mechanism of charge transfer and hydrogen generation was proposed. This work provides new examples on dye-photosensitized g-C3N4.
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页数：10
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