Topic
Sodium sulfite
About: Sodium sulfite is a research topic. Over the lifetime, 2548 publications have been published within this topic receiving 18523 citations. The topic is also known as: Na2SO3 & Anhydrous sodium sulfite.
Papers published on a yearly basis
Papers
More filters
••
TL;DR: In this article, the synthesis of silver nanoparticles has been carried out in aqueous solutions in a stirred semibatch reactor through the reduction of silver ions (Ag+) by sulfite ions (SO3 2−), which were added at a tightly controlled rate up to a final sulfite/silver molar ratio of 0.45.
Abstract: The synthesis of silver nanoparticles has been carried out in aqueous solutions in a stirred semibatch reactor through the reduction of silver ions (Ag+) by sulfite ions (SO3
2−), which were added at a tightly controlled rate up to a final sulfite/silver molar ratio of 0.45. Sodium dodecyl sulfate (SDS) was used as the stabilizer at concentrations below its critical micelle concentration. The effects of temperature, sulfite addition rate, and SDS concentration have been assessed. Ag+ turned to Ag0 in 5 min or less only when the synthesis was performed at 97 °C and not below. The sulfite addition rates studied were 0.5, 7.5, 15, and 90 μmol/min. The size, shape, polydispersity, and stability of the nanoparticles were determined by the sulfite addition rate and SDS concentration. At low SDS concentration (4 mM), stable, spherical shape, small size nanoparticles were formed only at the two intermediate sulfite addition rates. At the highest sulfite addition rate, 9 nm mean size spherical nanoparticles having a low ±5 nm polydispersity were produced at a high SDS concentration of 10 mM. With the low SDS concentration, larger truncated and spherical shape nanoparticles were obtained. UV–Vis spectrophotometry and transmission electron microscopy were used to characterize the nanoparticles.
43 citations
••
TL;DR: In this paper, a linear correlation exists between the extraction of Ni and Fe, indicating the difficulty in selective leaching of Ni over Fe over goethite and it is difficult to dissolve in a high oxidation-reduction potential solution environment.
43 citations
••
TL;DR: Results of this study indicate that ammonium thiosulphate may be an optimal chelating ligand for phytoextraction due to its great potential to enhance Hg accumulation in plants while decreasing bioavailable Hg concentration in the soil.
43 citations
••
TL;DR: In this article, the macroscopic catalyzed oxidation kinetics of calcium sulfite were investigated by varying pH, concentration of calcite and peracetic acid, airflow flux and temperature.
42 citations
••
TL;DR: A visible-light-induced radical cascade cyclization of 2-isocyanoaryl thioethers for the synthesis of2-CF2/CF3-containing benzothiazoles has been developed.
42 citations