فهرست مقالات Gemini surfactant

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  1 - Synthesis, Characterization, and Antibacterial Properties of Surfactant Encapsulated Mn/Mg Co-doped Titania Nanoparticles
  Sankara Miditana
  10.30495/ijc.2023.1992163.2029
  The current research work was mainly focused on the antibacterial performance of Mn/Mg co-doped TiO2 nanoparticles in presence of Gemini surfactant (GS). Mn, Mg co-doped TiO2 nanoparticles were synthesized by sol-gel method and calcined at 450 0C. The characterization r چکیده کامل

  The current research work was mainly focused on the antibacterial performance of Mn/Mg co-doped TiO2 nanoparticles in presence of Gemini surfactant (GS). Mn, Mg co-doped TiO2 nanoparticles were synthesized by sol-gel method and calcined at 450 0C. The characterization results reveal that among all the co-doped TiO2 and surfactant encapsulated TiO2 nanoparticles, the MMT5-GS2 Nano catalyst exhibited the most favorable properties, featuring a small particle size, a large surface area, with respective values of 6.6 nm, 230.2 m2/g, and a bandgap of 2.66 eV. The efficiency of the synthesized catalysts was examined by the antibacterial activity of Escherichia coli (E. coli) and Klebsiella pneumonia pathogens. Among all the catalysts, MMT5-GS2 demonstrated the best performance. The zone of inhibition of bacterial growth for E. coli and Klebsiella pneumonia was measured to be (33.1±0.12 mm) and (26.1±0.12 mm) respectively, at a concentration of 400 µg/mL. These values are significantly higher than the standard value of (chloramphenicol-16.71±0.2) at 100 µg/mL, indicating the remarkable efficacy of the MMT5-GS2 nanocatalyst. The co-doped nano titania particles encapsulated with surfactant have great potential as antibacterial agents. پرونده مقاله
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  2 - Phase behavior and mixing properties of symmetric gemini surfactant nano structures by quasichemical theory
  Zahra Khodadadi
  In the academic and industrial sectors, there has been a significant level of attention directed towards novel surfactants, particularly nano gemini surfactants, owing to their distinctive characteristics in recent times. The utilization of the quasichemical approximati چکیده کامل

  In the academic and industrial sectors, there has been a significant level of attention directed towards novel surfactants, particularly nano gemini surfactants, owing to their distinctive characteristics in recent times. The utilization of the quasichemical approximation has enabled the determination of phase equilibrium and the mixing properties for solutions of this nature. The Helmholtz free energy, mixing entropy, and mixing energy were ascertained through the variation of hydrophilic and hydrophobic units in nano gemini surfactants. The augmentation of the hydrophilic properties of the nano gemini surfactant has been observed to enhance the reaction of mixing. In turn, there is a reduction in the energy required for mixing. Furthermore, the negative value of the Helmholtz free energy of mixing has been observed to increase. When the hydrophobicity of a nano gemini surfactant increases, a contrary result to previous findings is observed. The mixing entropy remains unaffected by the hydrophobic and hydrophilic units of the nano gemini surfactant. An increase in the hydrophobic tail length of the surfactant leads to a corresponding increase in the two-phase equilibrium region. Conversely, a decrease in the hydrophobic tail length results in a decrease in the two-phase equilibrium region. پرونده مقاله