Nano cube of CaSnO3: Facile and green co-precipitation synthesis, characterization and photocatalytic degradation of dye

Abstract

In this work, nanocubes of CaSnO3 have been prepared by a simple and green co-precipitation method. In this technique, for preparation of calcium stannate, we have used from a complex structure of calcium as a new precursor and the synthesis of CaSnO3 have been done in water as a green solvent. Using of complexing precursors were created a congestion in reaction medium. Different conditions have been studied in synthetic approaches and optimized the effect of different parameters on the morphology of product such as precipitation agent (alkaline), pH, temperature, the rate of stirrer, surfactants and the mole ratio of surfactants for preparation product and obtaine the best product in terms of quality and morphology. By using of this CaSnO3, two types of azo dyes (acid blue 92 and acid brown 14) have been degraded at presence of ultraviolet light from aqueous solution. Results display that the powder shows appropriate catalytic behavior for degradation of dyes (77% acid brown 14 and 67% acid black 92). Therefore these nano-cube structures have been used as photocatalysts in presence of UV light for degradation of azo dyes.

1,4-Butanediol Selective Dehydration to 3-Butene-1-ol over Ca–Zr–Sn Composite Oxide Catalysts

“…With the increase in Sn content, the intensity of diffraction signals attributed to CaCO 3 is weakened, and that of those assigned to Ca 0.15 Zr 0.85 O crystal phase is gradually increased. This is mainly due to the introduced Sn species being converted to amorphous CaSnO 3 through the interaction with Ca [22]. The presence of Sn can also be concluded to promote the formation of Ca a .…”

“…With the increase in Sn content, th intensity of diffraction signals attributed to CaCO3 is weakened, and that of those assigned to Ca0.15Zr0.85O crystal phase is gradually increased. This is mainly due to the introduced Sn species being converted to amorphous CaSnO3 through the interaction with Ca [22] The presence of Sn can also be concluded to promote the formation of Ca0.15Zr0.85O and inhibit the further conversion of Ca0.15Zr0.85O to CaZrO3. The catalytic properties of Ca0.68ZrSnx-M with a different Sn content in BDO dehydra tion (Figure 8) show that both BDO conversion and BTO selectivity first increase and then decrease with an increasing Sn amount, and reach up to the highest values when the Sn/Z molar ratio is 0.28.…”

Controllable synthesis and characterization of Mg2SiO4 nanostructures via a simple hydrothermal route using carboxylic acid as capping agent and their photocatalytic performance for photodegradation of azo dyes

“…There-aer, the samples were analyzed with the UV-Vis spectrometer. The percentage of water pollutant photocatalytic degradation was measured as follows, 29,30 where A 0 and A t are the concentrations of the water polluter at 0 and t min, respectively, by a UV-Vis spectrometer (eqn (1)).…”

Alkaline earth stannates applied in photocatalysis: prospection and review of literature

“…A degradation mechanism was proposed by the authors. CaSnO 3 was also used for the photodegradation of azo-dyes [60,61]. For instance, Moshtaghi et al [61] synthesized CaSnO 3 nanocubes by co-precipitation and showed a good activity for the degradation of acid brown-14 (77%) and acid blue-92 (67%).…”

“…CaSnO 3 was also used for the photodegradation of azo-dyes [60,61]. For instance, Moshtaghi et al [61] synthesized CaSnO 3 nanocubes by co-precipitation and showed a good activity for the degradation of acid brown-14 (77%) and acid blue-92 (67%). Lucena et al [60] synthesized CaSnO 3 by the modified-Pechini method and evaluated the photodegradation of the remazol golden yellow (RNL) under UV light at different pH values.…”