Photocatalytic Degradation of Organic Pollutants Using Porous g‐C3N4 Nanosheets Decorated with Gold Nanoparticles. Issue 35 (17th September 2021)

• Record Type: Journal Article
• Authors: Cong, Hongjin; Li, Xinyi; He, Tingting; Wang, Liyan; Zhao, Chenkai; Wang, Shiyu; Zhao, Yang; Song, Hua; Wang, Huan
• Is Part Of: ChemistrySelect. Volume 6:Issue 35(2021)
• Page Start: 9458
• Page End: 9466
• Publication Date: 2021-09-17
• Subjects: Au nanoparticles -- heterostructure -- localized surface plasmon resonance effect -- organic pollutants -- porous g-C3N4; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.202102241
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: In this work, a composite photocatalyst consisted of the porous graphitic carbon nitride (pg‐C3 N4 ) nanosheets decorated with in‐situ grown gold (Au) nanoparticles were prepared. By characterizing and analyzing chemical compositions and structures, and optical and electrical properties of this Au/pg‐C3 N4 composite, the excellent photocatalytic performance mainly comes from the following aspects: firstly, pg‐C3 N4 synthesized from melamine by high‐temperature calcination with the assistance of ascorbic acid has larger specific surface area and narrower band gap width than common g‐C3 N4 ; secondly, localized surface plasmon resonance (LSPR) effect of Au nanoparticles can enhance light absorption of pg‐C3 N4 via near‐field enhancement‐induced excitation; thirdly, the heterojunction formed between Au nanoparticles and pg‐C3 N4 nanosheets can promote electron transfer. Consequently, Au/pg‐C3 N4 presented the obvious improvement of photocatalytic activity on the degradation of rhodamine B and amaranth under simulated solar irradiation that the kinetic rate constant of degradation reaction can be increased by 3.9 and 5.7 times compared with g‐C3 N4, respectively. Abstract : The composite photocatalyst consisted of the porous graphitic carbon nitride (pg‐C3 N4 ) nanosheets decorated with in‐situ grown gold nanoparticles were prepared, which exhibited the obvious improvement of photocatalytic activity on the degradation of rhodamine B and amaranth under simulated solar irradiation that the kinetic rate constant of degradation reaction can be increased by 3.9 and 5.7 times compared with g‐C3 N4, respectively.