Adsorption of mixtures of nonionic sugar-based surfactants with other surfactants at solid/liquid interfaces

Zhang, Lei; Zhang, Rui; Somasundaran, P.

doi:10.1016/j.jcis.2006.06.068

Cited by 27 publications

(12 citation statements)

References 10 publications

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“…Both led to the enhanced sorption of MPB at large Tween 80 fraction. Similar influence of nonionic surfactant on the sorption of cationic surfactant was also found by Somasundaran's group [29,30]. Fig.…”

Section: Mpb-tween 80supporting

confidence: 84%

“…It has been established that the surfactant layer adjacent to the solid silica surface was rich in cationic surfactant and the affinity of nonionic surfactant for silicon surface was greatly reduced in the presence of cationic-nonionic mixed surfactants [26]. Somasundaran's group [29][30][31] addressed that the sorption of nonionic surfactant on alumina was negligible, the sorption of cationic surfactant was great due to electrostatic attraction and the presence of cationic surfactant may enhance the sorption of nonionic surfactant via coadsorption. However, it has been obtained in this study that the sorption of both Tween 80 and MPB was great and contribution of hydrophobic interaction to the sorption process was rather larger than electrostatic attraction.…”

Section: Mpb-tween 80mentioning

confidence: 99%

See 1 more Smart Citation

Enhanced desorption of hexachlorobenzene from kaolin by single and mixed surfactants

Yuan

Shu

Wan

et al. 2007

Journal of Colloid and Interface Science

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Section: Mpb-tween 80supporting

confidence: 84%

Section: Mpb-tween 80mentioning

confidence: 99%

Enhanced desorption of hexachlorobenzene from kaolin by single and mixed surfactants

Yuan

Shu

Wan

et al. 2007

Journal of Colloid and Interface Science

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“…The synergistic binding or adsorption of the amphiphiles is driven by the hydrophobic interactions as well as by the attenuated repulsive interactions between the headgroups of the bound ionic surfactant. 40 Without added nonionic surfactant transparent mixtures can be prepared at low CTAB-to-PSS ratios. With increasing CTAB concentration the charges of the polyion are compensated by the bound surfactant ions, resulting in decreasing net charge and size of the PSS/CTAB assemblies and increasing turbidity of the mixtures.…”

Section: Resultsmentioning

confidence: 99%

Complexation between Sodium Poly(styrenesulfonate) and Alkyltrimethylammonium Bromides in the Presence of Dodecyl Maltoside

Fegyver

Mészáros

2015

J. Phys. Chem. B

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In the present paper, the impact of dodecyl maltoside (C12G2) on the association of sodium poly(styrenesulfonate) (PSS) with dodecyl- and hexadecyltrimethylammonium bromides (DTAB and CTAB) was studied. A low amount of nonionic surfactant enhances the binding of the investigated cationic amphiphiles on PSS, reducing the cationic surfactant-to-polyanion ratio needed for charge neutralization and precipitation. This effect is more pronounced for DTAB than for CTAB due to the considerably higher free surfactant concentration of the former cationic amphiphile. The synergistic surfactant binding also affects the nonequilibrium features of PSS/CTAB association via enhancing the kinetically stable concentration range of overcharged polyion/surfactant nanoparticle dispersions. With increasing C12G2 concentration, however, an opposite effect of the uncharged additive dominates. Namely, the CTAB molecules are solubilized excessively into mixed surfactant micelles, which reduces the surface charge of the PSS/CTAB/C12G2 nanoparticles and thus destabilizes their dispersion. At appropriately large nonionic surfactant concentrations, the binding of CTAB is largely reduced, resulting in the redissolution of the precipitate. In contrast, neither the destabilization nor the resolubilization effects of the added dodecyl maltoside were observed for the PSS/DTAB system due to the much lower driving force of DTAB binding compared to CTAB. Our results clearly demonstrate that the alkyl chain length of the ionic amphiphile has a pronounced effect on both the equilibrium and nonequilibrium aspects of polyion/mixed surfactant complexation which might be further exploited in various next generation applications.

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“…As previously explained, anionic surfactants can be adsorbed on TiO 2 particles themselves due to electrostatic interaction under UV irradiation. The electrostatic attraction for the adsorption of anionic molecules is usually stronger than hydrogen bonding (Zhang and Somasundaran 2006); so, SDBS generally adsorbs more than TX100 at the initial stage. The preadsorbed SDBS molecules acted as anchors on TiO 2 surface and formed mixed aggregates with TX100 through chain-chain int e r a c t i o n s a t s o l i d / l i q u i d i n t e r f a c e ( L u a n d Somasundaran 2008).…”

Section: Effect Of Mixed Surfactants On Pcp Degradationmentioning

confidence: 99%

Enhanced photodegradation of pentachlorophenol by single and mixed nonionic and anionic surfactants using graphene–TiO2 as catalyst

Zhang

Zeng

et al. 2015

Environ Sci Pollut Res

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The photodegradation of pentachlorophenol (PCP) in a surfactant-containing (single and mixed) complex system using graphene-TiO2 (GT) as catalyst was investigated. The objective was to better understand the behavior of surfactants in a GT catalysis system for its possible use in remediation technology of soil contaminated by hydrophobic organic compounds (HOCs). In a single-surfactant system, surfactant molecules aggregated on GT via hydrogen bonding and electrostatic force; nonideal mixing between nonionic and anionic surfactants rendered GT surface with mixed admicelles in a mixed surfactant system. Both effects helped incorporating PCP molecules into surfactant aggregates on catalyst surface. Hence, the targeted pollutants were rendered easily available to photo-yielded oxidative radicals, and photodegradation efficiency was significantly enhanced. Finally, real soil washing-photocatalysis trials proved that anionic-nonionic mixed surfactant soil washing coupled with graphene-TiO2 photocatalysis can be one promising technology for HOC-polluted soil remediation.

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Adsorption of mixtures of nonionic sugar-based surfactants with other surfactants at solid/liquid interfaces

Cited by 27 publications

References 10 publications

Enhanced desorption of hexachlorobenzene from kaolin by single and mixed surfactants

Enhanced desorption of hexachlorobenzene from kaolin by single and mixed surfactants

Complexation between Sodium Poly(styrenesulfonate) and Alkyltrimethylammonium Bromides in the Presence of Dodecyl Maltoside

Enhanced photodegradation of pentachlorophenol by single and mixed nonionic and anionic surfactants using graphene–TiO2 as catalyst

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