Effect of reduced graphene oxide on the structural, optical, adsorption and photocatalytic properties of iron oxide nanoparticles. (20th April 2018)

• Record Type: Journal Article
• Authors: Suresh, R.; Udayabhaskar, R.; Sandoval, Claudio; Ramírez, Eimmy; Mangalaraja, R. V.; Mansilla, Héctor D.; Contreras, David; Yáñez, Jorge
• Is Part Of: New journal of chemistry. Volume 42:Number 11(2018)
• Page Start: 8485
• Page End: 8493
• Publication Date: 2018-04-20
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/c8nj00321a
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : Effect of reduced graphene oxide on the structural and photocatalytic properties of Fe2 O3 nanoparticles. Abstract : Functionalized Fe2 O3 nanoparticles with low concentrations (1, 3 and 5 wt%) of reduced graphene oxide (rGO) were prepared by the thermal decomposition method. In accordance with X-ray diffraction (XRD), Fourier transform infrared (FTIR), UV-visible, and photoluminescence (PL) spectroscopies, a phase change from hematite (α-Fe2 O3 ) to maghemite (γ-Fe2 O3 ) was observed upon addition of rGO. The TEM investigation revealed that rGO led to the distortion of the Fe2 O3 nanocuboid rods into spherical nanoparticles. The functionalized rGO acts as an electron accepter and led to the quenching of the luminescence behavior of Fe2 O3 . The functionalization of Fe2 O3 with 5% rGO significantly increases its surface area and thus enhanced adsorption of acid blue 113 (AB113 ) from water was achieved. The adsorption studies revealed that 5%rGO/Fe2 O3 (200 mg) adsorbed 89.6% of AB113 (100 mg L −1 ) within 440 min. In comparison with pure Fe2 O3, the 5%rGO/Fe2 O3 also exhibits excellent photocatalytic activity in the degradation of AB113 under visible light irradiation.