Concentration of 2-phenylphenol by organoclays from aqueous sucrose solution

Seki, Yoko; Ide, Yusuke; Okada, Tomohiko; Ogawa, Makoto

doi:10.1016/j.clay.2014.12.021

Cited by 12 publications

(8 citation statements)

References 35 publications

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“…Even in the presence of sucrose, 2-phenylphenol was effectively adsorbed on neostigmine-modified smectites. 83 The adsorption behavior of phenols onto Kunipia F, Sumecton SA and a synthetic fluor-tetrasilicic mica (TSM) modified with tris(2,2 -bipyridine)ruthenium(II) ([Ru(bpy) 3 ] 2+ is an example to show that the distance between adjacent cations plays a role in the adsorbent design. 84 Intercalation of [Ru(bpy) 3 ] 2+ into layered clay minerals has extensively been investigated for probing the surface of clays as well as for electrochemical applications.…”

Section: Adsorption Of Nonionic Organic Compoundsmentioning

confidence: 99%

Designed Nanostructures of Clay for Controlled Adsorption of Organic Compounds

Okada

Seki

Ogawa³

2014

j nanosci nanotechnol

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The utilization of smectite clay, swelling layered silicate, as scaffolds for designing functional nanostructures was overviewed. Surface modification of smectites with organoammonium ions has given hydrophobic and microporous nature to uptake nonionic organic contaminants from environments. The states of the adsorbed nonionic organic compounds have been altered and varied by the modification of smectites as shown by the controlled release and specific catalytic reactions. Cationic species have been easily concentrated on smectites from aqueous phase and the states (orientation and distribution) have been controlled by the co-adsorption of both cationic and nonionic species. The functions of smectite-organic intercalation compounds derived from the precisely controlled nanostructures were introduced in this review.

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Section: Adsorption Of Nonionic Organic Compoundsmentioning

confidence: 99%

Designed Nanostructures of Clay for Controlled Adsorption of Organic Compounds

Okada

Seki

Ogawa³

2014

j nanosci nanotechnol

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“…The inorganic cations in the interlayer space of Sap, that compensate the negatively charged layer, can be exchanged with positively charged organic cations. Such cations can be formed from surfactants, dye or organometallic complexes in water (Kurokawa et al, 2014;Seki et al, 2015;Sas et al, 2017 Kurokawa et al, 2014). The surface of Sap is usually hydrophilic and the inorganic cations in the interlayer space tend to be hydrated (Ferrage, 2016).…”

Section: Organic Modification Of Saponitementioning

confidence: 99%

“…Accordingly, the polarity is altered (de Paiva et al, 2008). Besides, a wide range of organic cations, groups or molecules can be used and can perform a variety of functions such as in optical properties , adsorption (Seki et al, 2010(Seki et al, , 2015 and catalysis (Goto et al, 2016). In addition, the inorganic layers of Sap play an active role in stabilizing and protecting the intercalated organic species.…”

Section: Organic Modification Of Saponitementioning

confidence: 99%

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Modification, hybridization and applications of saponite: An overview

Zhou

et al. 2019

Applied Clay Science

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Modification of saponite (Sap) by surface engineering and intercalation chemistry introduces guest species into the structure of Sap and enhances the functionalities of the resultant Sap-based hybrids or composites. This review summarizes and evaluates latest scientific advances in the strategies for surface engineering, intercalation and hybridization of Sap, the insights into the relevant mechanisms, and the properties and applications of the resultant Sap-based materials. Studies have indicated that Sap can be inorganically modified by acid activation, inorganic cation exchange, pillaring, and adsorption. The methods of preparing organo-saponite (OSap) hybrids can be categorized as follows: 1) exchanging the inorganic cations in the interlayer space of Sap with organic cations; 2) covalent grafting of organic moieties or groups onto the surface of Sap; 3) intercalating polymer into the interlayer space of Sap by solution intercalation, and melt mixing or in situ polymerization. Organic-inorganic modified Sap can be made through the reactions between organic species and inorganic-modified Sap, or by the combination of inorganic species with organic-modified Sap. Modified Sap exhibits exceptional thermal stability, surface acidity, optical effects and adsorption. As such, the modified Sap can be used for optical materials, adsorbents, catalysts and clay/polymer nanocomposites (CPN). Literature survey suggests that future studies should place emphasis on optimizing and scaling up the modification of Sap, probing the thermodynamics, kinetics and mechanisms of the modification of Sap, endowing Sap with novel functionalities, and accordingly advancing the practical applications of the resultant Sap-based materials.

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“…Among the clay minerals of interest is saponite, which has applications as: adsorbent for the removal of heavy metal ions [1,2] and carcinogenic compounds [3]; control agent of the aggregation of luminescent dyes [4,5]; matrix for controlled release of drugs [6]; catalysts for industrially important reactions [7][8][9] and for prebiotic chemistry [10,11] ; immobilization support for various catalysts [12][13][14][15] and many more. These applications would be dependent on properties such as size, cation-exchange capacity, plasticity, catalytic activity, swelling behavior, permeability, and substitutions in the saponite structure.…”

Section: Introductionmentioning

confidence: 99%

Spectroscopic Studies of Synthetic and Natural Saponites: A Review

Ponce¹,

Kloprogge²

2020

Preprint

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Saponite is a trioctahedral 2:1 smectite with the ideal composition MxMg3AlxSi4-xO10(OH,F)2.nH2O (M = interlayer cation). Both the success of the saponite synthesis and the determination of its applications depends on robust knowledge of the structure and composition of saponite. Among the routine characterization techniques spectroscopic methods are the most common. This review, thus, provides an overview of various spectroscopic methods to characterize natural and synthetic saponite with focus on the extensive work by one of the authors (JTK). The IR and Raman spectra of natural and synthetic saponites are discussed in detail including the assignment of the observed bands. The crystallization of saponite is discussed based on the changes in the IR and Raman spectra and a possible crystallization model is provided. Infrared emission spectroscopy has been used to study the thermal changes of saponite in-situ including the dehydration and (partial) dehydroxylation up to 750˚C. 27Al and 29Si Magic-Angle-Spinning Nuclear Magnetic Resonance Spectroscopy is discussed (as well as 11B and 71Ga for B- and Ga-Si substitution) with respect to, in particular, Al(IV)/Al(VI) and Si/Al(IV) ratios. X-ray Photoelectron Spectroscopy provides besides chemical information also some information related to the local environments of the different elements in the saponite structure as reflected by their binding energies.

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Concentration of 2-phenylphenol by organoclays from aqueous sucrose solution

Cited by 12 publications

References 35 publications

Designed Nanostructures of Clay for Controlled Adsorption of Organic Compounds

Designed Nanostructures of Clay for Controlled Adsorption of Organic Compounds

Modification, hybridization and applications of saponite: An overview

Spectroscopic Studies of Synthetic and Natural Saponites: A Review

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