Ag–Cu Embedded SDS Nanoparticles for Efficient Removal of Toxic Organic Dyes from Water Medium

Abstract

Remediation of industrial water pollution is a trending subject to date for the researchers around the globe, due to its detrimental effects on human life as well as aquatic life. Azo dyes are the largest industrial water polluters in respect of volume while anthraquinone the second largest. Therefore, humongous considerations are being enumerated for the removal and decolorization of azo (AZ) dyestuff; however, for anthraquinone (AQ) dyes, these efforts are considerably minimal; although the later one poses a greater threat to environmental contamination, because of their reinforced structure. The current study is an effort toward this foremost issue. Chemical reduction synthesis of silver−copper (Ag−Cu) bimetallic nanoparticles (BNPs) was achieved using NaBH 4 as a reducing agent and sodium dodecyl sulfate (SDS) as a stabilizer. Characterization and morphological evaluation indicates two distinctive UV/vis absorption peaks for Ag and Cu. XRD studies for nanocomposite showed crystallite size of 8.96014 nm having an FCC structure. SEM with EDX confirmed the particle sizes of BNPs and SDS to be 17.14 and 114.56 nm, respectively. Potential catalytic activity and kinetic parameters of Ag−Cu BNPs@SDS were monitored against Methylene Blue (MB), Methyl Orange (MO), and eosin-y (EY). The percentage degradation recorded for the nanocatalyst against MO, MB, and EY was 95.21%, 98.57%, and 96.65%, respectively. This method can be adopted for the removal of multiple dyes from industrial effluent on a larger scale.

Microalgae as a potential natural source for the green synthesis of nanoparticles

“…Nowadays, the synthesis of NPs has been gaining interest, and chemical synthesis has become one of the most studied methods, both to solve environmental 5,6 and medical 7 problems. However, to ensure safe and responsible applications of such technology, ethical and environmental issues need to be addressed.…”

Highly enhanced cationic dye adsorption from water by nitro-functionalized Zn-MOF nano/microparticles and a biomolecular binder for improving the reusability

“…Organic dyes are extensively used in many industries including textile, printing, food, paper and pharmaceutical industries. 1–3 Most of the synthetic organic dyes are chemically stable and not easily biodegradable. Hence, discharging the used organic dyes into the environment causes serious problems to the ecosystems and living organisms including human beings.…”

Remediation of Methyl Orange Dye in Aqueous Solutions by Green Microalgae (Bracteacoccus sp.): Optimization, Isotherm, Kinetic, and Thermodynamic Studies

“…Therefore, the uptake of synthetic dyes from contaminated water is a necessary step to protect the aquatic environment from pollution. Several techniques, such as membrane filtration, coagulation-flocculation, ozonation, photocatalytic oxidation, electrochemical oxidation, and adsorption, have been used to remove synthetic dyes from aqueous media [6]. Among these techniques, adsorption is considered the most appropriate for its several advantages, such as simplicity, low cost, environmental friendliness, effectiveness, and ease of use [7].…”