Sodium SelenoSulfate Solution - Analytical Products / Alfa Chemistry

CAT

LS732757

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25ML

Copper Selenide Nanosnakes: Bovine Serum Albumin-Assisted Room Temperature Controllable Synthesis and Characterization

Peng Huang, Yifei Kong, Zhiming Li, Feng Gao, Daxiang Cui

Nanoscale Res Lett. 2010 Apr 3;5(6):949-56.

PMID: 20672034

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Case Study

Sodium Selenosulfate Used for the Synthesis of Crystalline Silver Selenide Nanoparticles via Microemulsion Strategy

Ayele, Delele Worku. Egyptian Journal of Basic and Applied Sciences 3.2 (2016): 149-154.

Sodium selenosulfate (Na₂SeSO₃) plays a critical role as a selenium precursor in the low-temperature synthesis of silver selenide (Ag₂Se) nanoparticles using a facile one-pot microemulsion method. This strategy, executed at 5-7 °C, enables rapid formation of crystalline Ag₂Se within minutes through a phase separation and interface-reaction mechanism.
The process begins with the creation of a transparent microemulsion consisting of NaOH, oleic acid, deionized water, ethanol, and n-hexane. Silver nitrate is then introduced to form a silver ion-rich emulsion. Finally, Na₂SeSO₃ solution is injected under controlled low-temperature conditions. The immediate color change from transparent to black confirms the in situ formation of Ag₂Se nanoparticles, followed by 10 minutes of continued stirring to complete the synthesis.
The success of this synthesis relies on the unique solubility and reactivity profile of sodium selenosulfate, which ensures controlled release of selenium species in the aqueous-organic interface. This facilitates rapid nucleation and growth of Ag₂Se nanoparticles with crystalline structure.
This methodology highlights the effectiveness of Na₂SeSO₃ in promoting green, low-temperature, and time-efficient routes for semiconductor nanomaterial fabrication, offering potential applications in thermoelectrics, optoelectronics, and sensing technologies.

Sodium Selenosulfate Used for the Deposition of CdSe and CdSSe Nanostructured Thin Films at Room Temperature

VanderHyde, Cephas A., et al. Solid State Sciences 48 (2015): 186-192.

Sodium selenosulfate (Na₂SeSO₃) serves as a key selenium precursor in the room-temperature chemical deposition of cadmium selenide (CdSe) and cadmium sulfoselenide (CdSSe) nanostructured thin films. This cost-effective and straightforward method enables the controlled growth of high-quality semiconductor coatings on glass substrates without the need for elevated temperatures or mechanical agitation.
In the synthesis of CdSe films, cadmium acetate [Cd(CH₃COO)₂] is complexed with aqueous ammonia to form a transparent cadmium ammine solution. The slow addition of freshly prepared Na₂SeSO₃ introduces selenium ions in a controlled manner, facilitating uniform film formation. The substrates immersed in the solution are allowed to react undisturbed for 24 hours, resulting in the deposition of nanostructured CdSe layers.
For the fabrication of CdSSe thin films, a co-deposition strategy is employed using both Na₂SeSO₃ and thiourea [SC(NH₂)₂] as selenium and sulfur sources, respectively. This approach enables the incorporation of both chalcogen elements into a single, homogeneous ternary compound.
The use of Na₂SeSO₃ ensures a steady release of reactive selenium species under mild conditions, making it ideal for environmentally friendly and scalable deposition processes. This methodology highlights sodium selenosulfate's value in advancing low-temperature fabrication of semiconducting films for optoelectronic and photovoltaic applications.

Sodium Selenosulfate Used for the Formation of CdSe and CdS/CdSe Nanoparticles via Photocatalytic and Colloidal Routes

Raevskaya, Alexandra E., Alexander L. Stroyuk, and Stephan Ya Kuchmiy. Journal of colloid and interface science 302.1 (2006): 133-141.

Sodium selenosulfate (Na₂SeSO₃) plays a central role in the aqueous-phase synthesis of cadmium selenide (CdSe) and cadmium sulfide-selenide (CdS/CdSe) composite nanoparticles. Its utility as a selenium precursor enables the generation of well-defined nanostructures under mild reaction conditions, particularly in polymer-stabilized media such as sodium polyphosphate and gelatin.
In colloidal synthesis, CdSe nanoparticles are formed through the interaction of Na₂SeSO₃ with CdCl₂ in aqueous polymer solutions. Key parameters such as reaction temperature and reagent concentration ratios critically influence nanoparticle size and optical properties. This demonstrates Na₂SeSO₃'s suitability for fine-tuning nanocrystal morphology and performance.
dditionally, Na₂SeSO₃ serves as a reductant in photocatalytic systems, where its interaction with conduction band electrons on CdS surfaces drives the photogeneration of CdSe. When CdCl₂ is present, this reaction yields binary CdS/CdSe nanoparticles. The slow electron transfer between adsorbed selenosulfate and the CdS conduction band is identified as the rate-limiting step in this photocatalytic transformation.
These findings underscore the dual functionality of sodium selenosulfate as both a selenium donor and a reactive photochemical substrate. Its role is indispensable in advancing the controlled synthesis of semiconductor nanostructures for photocatalysis, optoelectronics, and quantum dot technologies.