Controlling the Pore Size and Connectivity of Alumina-Particle-Stabilized Foams Using Sodium Dodecyl Sulfate: Role of Surfactant Concentration

Han, Yosep; Yang, Ji-Won; Jung, Minuk; Han, Seongsoo; Kim, Seong–Min; Jeon, Ho-Seok

doi:10.1021/acs.langmuir.0c01104

Cited by 16 publications

(8 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Khan et al synthesized Ag NPs in the presence of CTAB using Raphanus sativus extract . Although various studies have been reported using plant extracts and surfactants, most of the times their individual effects have been reported. ,, Therefore, while using flower extract as a reducing agent, it was imperative to study the effect of anionic surfactants on the formation and structural features of Ag NPs . Hitherto, a relationship is developed between the effects of the anionic surfactant [SDS] and Cassia siamea flower petal extract ([CSFE]) by studying their mutual effects on the synthesis and overall texture development of Ag NPs.…”

Section: Introductionmentioning

confidence: 99%

Deciphering the Kinetic Study of Sodium Dodecyl Sulfate on Ag Nanoparticle Synthesis Using Cassia siamea Flower Extract as a Reducing Agent

et al. 2021

View full text Add to dashboard Cite

Silver nanoparticles (Ag NPs) were synthesized using Cassia siamea flower petal extract (CSFE) as a reducing agent for the first time. In its presence and absence, the correlative effects of the anionic surface-active agent sodium dodecyl sulfate (SDS) were studied with respect to the development and texture of Ag NPs. Under different reagent compositions, the Ag NPs were inferred by localized surface plasmon resonance peaks between 419 and 455 nm. In the absence of SDS, there was a small eminence at 290 and around 350 nm, pointing toward the possibility of irregular polytope Ag NPs, which was confirmed in the transmission electron microscopy images. This elevation vanished beyond the cmc of [SDS], resulting in spherical and oval shaped Ag NPs. The effects of reagent concentrations were studied at 25 °C and around 7 and 9 pH in the absence and presence of SDS, respectively. Also, kinetic studies were performed by UV–visible spectrophotometry. Prodigious effects on shape and size were found under different synthesis conditions in terms of hexagonal, rod-, irregular-, and spherical shaped Ag NPs. Furthermore, the antimycotic activity of the synthesized Ag NPs was established on different Candida strains, and best results were found pertaining Candida tropicalis . The ensuing study impels the control of texture and dispersity for Ag NPs by CSFE and SDS, and the resultant polytope Ag NPs could be a future solution for drug-resistant pathogenic fungi.

show abstract

Section: Introductionmentioning

confidence: 99%

Deciphering the Kinetic Study of Sodium Dodecyl Sulfate on Ag Nanoparticle Synthesis Using Cassia siamea Flower Extract as a Reducing Agent

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Recovery is the percentage of the total mineral or metal contained in the ore, which is recovered in the concentrate. The recovery of the concentrate is given by this Equation [18,31]: The zeta potential measurements were carried out using a zeta potential analyzer (ELS-Z Zeta Potential analyzer, Otsuka Electronics, Osaka, Japan). For measurement, the samples were ground to particles less than 5 µm using an agate mortar.…”

Section: Experimental Methods and Analysismentioning

confidence: 99%

“…Recovery is the percentage of the total mineral or metal contained in the ore, which is recovered in the concentrate. The recovery of the concentrate is given by this Equation [18,31]:…”

Section: Experimental Methods and Analysismentioning

confidence: 99%

Laboratory Testing of Scheelite Flotation from Raw Ore in Sangdong Mine for Process Development

et al. 2020

Self Cite

View full text Add to dashboard Cite

Tungsten is an essential metal for the manufacture of special alloys, which is in constant demand due to the development of the industry. The recovery of scheelite from undeveloped tungsten ore in South Korea was investigated to improve the flotation performance for high grade and recovery of concentrate. To investigate the interaction between the flotation reagents and the minerals, the adsorption experiments of oleic acid as a collector on Ca-bearing minerals, such as scheelite, calcite, and fluorite were carried out. This reaction was confirmed chemical adsorption by analysis of zeta potential and FTIR analysis. The batch test was performed using a raw ore to enhance the grade and recovery of the scheelite concentrate. It was obtained at the optimal conditions for high WO3 grade and recovery of scheelite concentrate by using a simple process. In particular, the sodium carbonate used as a pH modifier was investigated to increase scheelite flotation performance by supporting the selective depression of Ca-bearing gangue minerals. Furthermore, a locked cycle test (LCT) was carried out based on batch test results for the design of a continuous pilot plant.

show abstract

“…Herein, we have developed fast-curing GP foam derived by the gaseous method, followed by analysis on porosity, compressive strength, and thermal conductivity. Herein, the effect of the contents of a foaming agent (hydrogen peroxide, H 2 O 2 ) and a surfactant (Sodium dodecyl sulfate (SDS), NaC 12 H 25 SO 4 ) was conducted [31].…”

Section: Introductionmentioning

confidence: 99%

Fast-Curing Geopolymer Foams with an Enhanced Pore Homogeneity Derived by Hydrogen Peroxide and Sodium Dodecyl Sulfate Surfactant

et al. 2022

View full text Add to dashboard Cite

The properties of porous and lightweight ceramic foam that can be cured at room temperature using metakaolin-based geopolymers were studied. A geopolymer slurry was prepared using metakaolin and a potassium-based alkaline medium at room temperature, and the obtained viscous paste was expanded via gaseous methods, by means of the decomposition of peroxide at room temperature. Therefore, geopolymer (GP) foam developed in this study through multivariate geopolymer, foaming agents, and surfactants can be cured at room temperature (within 5 days) without a separate heat treatment process. The homogeneous micropores were obtained through the stabilization of the interface between geopolymer slurry and oxygen gas bubbles generated through the base-catalyzed decomposition of hydrogen peroxide. The porosity was confirmed to be 29% and 54% before and after using sodium dodecyl sulfate (SDS). The compressive strengths and densities were 1.57 MPa and 0.75 g/cm3 for GP foam without SDS, and 3.63 MPa and 0.48 g/cm3 for GP foam with SDS. Through the mercury intrusion porosimetry analysis, the pores were further refined from 100 µm to 30 µm when SDS was used, and at the same time, the variation of pore size was minimized, so that a relatively uniform pore size was maintained. In addition, the thermal conductivity is 0.0803 W/m·K and the pore size is 33.2 μm, which is smaller in pore diameter than the geopolymer containing only hydrogen peroxide. As a result, although the hydrogen peroxide alone sample has excellent thermal conductivity, the use of a surfactant is recommended for fine micropore size control. While reducing the non-uniform distribution of pores and the size of micropores generated through the direct foaming method as an inorganic binder, the possibility of an insulation finish was also confirmed by reducing the weight.

show abstract

Controlling the Pore Size and Connectivity of Alumina-Particle-Stabilized Foams Using Sodium Dodecyl Sulfate: Role of Surfactant Concentration

Cited by 16 publications

References 60 publications

Deciphering the Kinetic Study of Sodium Dodecyl Sulfate on Ag Nanoparticle Synthesis Using Cassia siamea Flower Extract as a Reducing Agent

Deciphering the Kinetic Study of Sodium Dodecyl Sulfate on Ag Nanoparticle Synthesis Using Cassia siamea Flower Extract as a Reducing Agent

Laboratory Testing of Scheelite Flotation from Raw Ore in Sangdong Mine for Process Development

Fast-Curing Geopolymer Foams with an Enhanced Pore Homogeneity Derived by Hydrogen Peroxide and Sodium Dodecyl Sulfate Surfactant

Contact Info

Product

Resources

About