Coupling TiO2 nanorods with g‐CN using modified physical vapor deposition for efficient photoelectrochemical water oxidation. Issue 11 (8th July 2020)

• Record Type: Journal Article
• Authors: Wang, Lingling; Wang, Ruyi; Feng, Leyu; Liu, Yi
• Is Part Of: Journal of the American Ceramic Society. Volume 103:Issue 11(2020)
• Page Start: 6272
• Page End: 6279
• Publication Date: 2020-07-08
• Subjects: graphitic carbon nitride -- photoelectrochemical -- physical vapor deposition -- TiO2 nanorods; Ceramics -- Periodicals; 620.1405
• DOI: 10.1111/jace.17335
• Languages: English
• ISSNs: 0002-7820

Abstract

Abstract: The core‐shell TiO2 @g‐CN nanorods arrays were constructed directly on fluorine‐doped tin oxide grass using vacuum magnetic filtered arc ion plating. The unique structure combines both advantages from TiO2 as an effective electron‐transfer layer and graphic carbon nitride (g‐CN) with a proper band gap serving as visible light absorption layer. Under 100 mW/cm 2 (AM 1.5G) light illumination, the optimal TiO2 @g‐CN produces a photocurrent density of 0.91 mA/cm 2 at 1.23 V vs reversible hydrogen electrode, which is 2.1 times of the bare TiO2 (0.43 mA/cm 2 ) obtained at the same potential. The improved photoelectrochemical performance is mainly attributed from the improved charge separation and transport within the heterojunction as well as the enhanced light absorption.