ChemInform Abstract: SrSnO₃:N — Nitridation and Evaluation of Photocatalytic Activity.

Abstract

SrSnO 3:N -Nitridation and Evaluation of Photocatalytic Activity. -SrSnO3 powders are prepared by firing SrCO 3 and SnO2 in air (800 C, 6 h) followed by thermal nitridation under a stream of NH 3 at 600 C and 650 C. The latter results the desired oxynitride while preserving the perovskite structure. SrSnO3:N decomposes at 750 C. It shows a high potential towards photocatalysis under visible light (methylene blue degradation) with an activity 4 times larger than that of SrSnO 3 or TiO2 under the same conditions. Raman and UV/Vis spectra are given. -(LOBO, T. M.; LEBULLENGER, R.; BOUQUET, V.; GUILLOUX-VIRY, M.; SANTOS, I. M. G.; WEBER*, I. T.; J. Alloys Compd. 649 (2015) 491-494, http://dx.doi.org/10.1016/j.jallcom.2015.05.203 ; Inst. Quim., Univ. Brasilia, 70910 Brasilia, Brazil; Eng.) -J. Schramke 46-011

Microwave-Assisted Synthesis of Perovskite SrSnO3 Nanocrystals in Ionic Liquids for Photocatalytic Applications

“…A high PL emission intensity is associated with a high recombination rate and low activity. As shown in Figure 8, the 4) are larger than those for SrSnO 3 prepared by a solid-state reaction (2.8 m 2 g −1 ), 46 by a microwave hydrothermal method at 180 °C for 4 h and subsequent heat treatment process at 800 °C (6.6 m 2 g −1 ), 47 and by calcination at 1100 °C for 6 h of the hydrothermally prepared SrSn(OH) 6 at 180 °C for 16 h (0.3−0.5 m 2 g −1 ). 1 However, the surface areas of the SrSnO 3 samples are lower than that of SrSnO 3 with peanut-like morphologies synthesized by calcination at 700 °C for 6 h of the prepared SrSn(OH) 6 via a wet-chemical reaction (27 m 2 g −1 ).…”