Effect of ion (Ag+, N3−) doping on the photocatalytic activity of the Ruddlesden–Popper-type layered perovskite K2Nd2Ti3O10

Publication date: Available online 15 November 2019Source: Comptes Rendus ChimieAuthor(s): Ramaswamy Kadari, Gundeboina Ravi, Perala Venkataswamy, Radha Velchuri, Nagegownivari Ramachandra Munirathnam, Muga VithalAbstractIn recent years, metal–nonmetal codoping has become a promising approach that can be used for effective tailoring of the structure–activity properties of semiconductors in photocatalysis. In the present study, N-doped K2Nd2Ti3O10 (KNdTON), Ag-doped K2Nd2Ti3O10 (AgNdTO), as well as N and Ag codoped K2Nd2Ti3O10 (AgNdTON) photocatalysts were successfully synthesized by solid-state and ion-exchange methods, using the pre-prepared K2Nd2Ti3O10 (KNdTO). The parent K2Nd2Ti3O10 catalyst was synthesized using a facile gel-burning method. The prepared materials are characterized by different techniques such as powder X-ray diffraction (XRD), thermogravimetric (TG) analysis, scanning electron microscopy–energy dispersive X-ray (SEM–EDX) spectroscopy, transmission electron microscopy (TEM), high- resolution-TEM (HR–TEM), oxygen–nitrogen–hydrogen (O–N–H) analysis, inductively coupled plasma-optical emission spectroscopy (ICP-OES), Fourier transform-infrared spectroscopy (FT-IR), and diffuse reflectance UV–visible spectroscopy (UV–vis DRS). The photocatalytic activity of the obtained catalysts was investigated by studying the degradation of two different pollutants viz., methylene blue (MB) and methyl violet (MV) under visible light irradiation. The sh...

Source: Comptes Rendus Chimie - November 16, 2019 Category: Chemistry Source Type: research