纳米片
分解水
光电流
材料科学
氮化碳
电解质
能量转换效率
纳米技术
化学工程
光电子学
化学
光催化
电极
催化作用
生物化学
工程类
物理化学
作者
Jin Zhang,Jie Zhang,Changxue Dong,Yu Xia,Lan Jiang,Gang Wang,Ruilin Wang,Jinwei Chen
出处
期刊:Small
[Wiley]
日期:2023-05-01
卷期号:19 (34)
被引量:1
标识
DOI:10.1002/smll.202208049
摘要
A general method for the direct synthesis of highly homogeneous and dense polymerized carbon nitride (PCN) nanosheet films on F: SnO2 (FTO) is developed. Detailed photoelectrochemical (PEC) water-splitting studies reveal that the as-synthesized PCN films exhibit outstanding performance as photoanode for PEC water-splitting. The optimal PCN photoanode exhibits excellent photocurrent density of 650 µA cm-2 , and monochromatic incident photon-to-electron conversion efficiency (IPCE) value up to 30.55% (λ = 400 nm) and 25.97% (λ = 420 nm) at 1.23 VRHE in 0.1 m KOH electrolyte. More importantly, the PCN photoanode has an excellent hole extraction efficiency of up to 70 ± 3% due to the abundance of active sites provided by the PCN photoanode nanosheet, which promotes the transport rates of OER-relevant species. These PCN films provide a new benchmark for PCN photoanode materials.
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