Fast and facile preparation of CTAB based gels and their applications in Au and Ag nanoparticles synthesis

Upadhyay, Ravi Kant; Soin, Navneet; Saha, Susmita; Barman, Anjan; Roy, Susanta Sinha

doi:10.1016/j.matchemphys.2015.02.032

Cited by 12 publications

(5 citation statements)

References 37 publications

(49 reference statements)

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“…46,47 The features at about 1482 and 1385 cm −1 mainly arise due to the C H scissoring vibrations of CH 3 N and the C N stretch vibrations of the CTAB molecule, respectively. 48,49 In the PdNPs assemblies, both peaks are slightly blue shifted to 1432 and 1289 cm −1 , respectively, in keeping with the XPS results that point to a strong interaction between Pd and CTAB. The FTIR spectrum also shows two wide vibration bands at about 3380 and 3224 cm −1 , which are attributed to the stretch of the hydrogen bonded O H groups, which points to interactions between surfactant ligands and water in the PdNPs assemblies.…”

Section: Characterization Of the Pdnps Assembliessupporting

confidence: 85%

“…The FTIR spectrum also shows two wide vibration bands at about 3380 and 3224 cm −1 , which are attributed to the stretch of the hydrogen bonded O H groups, which points to interactions between surfactant ligands and water in the PdNPs assemblies. 48,50 Compared to pristine CTAB, the absence of the bands at 960 and 911 cm −1 and the presence of new peaks at 1107, 1033, 926, and 783 cm −1 in the PdNPs assemblies, which are attributed to the stretching modes of C N + effected by the Pd surface, 46,49,51 suggest that the binding of CTAB with PdNPs occurs via the linkage of CTA + (N + )-Pd (see Supporting Information). 46,51 Similar changes of the vibration-frequency bands upon surfactant modification were also observed in the production of CTAB-decorated AuNPs, supporting the presence of CTAB capping in the nanomaterials.…”

Section: Characterization Of the Pdnps Assembliesmentioning

confidence: 99%

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Surfactant‐directed Pd‐nanoparticle assemblies as efficient nanoreactors for water remediation

Huang

Yang

Lei

et al. 2020

EcoMat

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Devising new catalytic systems for the efficient removal of organic chlorides from contaminated sites has important benefits for the human health. Efficiency requires the use of performing catalysts and the extraction of the contaminant from the environment. Here we describe a novel strategy that combines both aspects. A one‐pot surfactant‐directed approach allows the preparation of ultrafine palladium nanoparticles (PdNPs) finely dispersed inside well‐ordered geometric structures, ranging from loose vesicles to nanocubes, from cylindrical to spherical assemblies. These assemblies work as nanoreactors where hydrophobic organic chlorides can be concentrated in the surfactant‐tail environment and efficiently reduced by the PdNP catalysts. As a proof‐of‐concept, we studied the dechlorination of the notorious pollutant 4‐chlorophenol. The nanoreactors display rapid dechlorination ability, excellent catalytic activity, and good stability and recyclability. This study provides a new methodology for effective water remediation that combines the advantages of both extraction and supported heterogeneous catalysis.

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Section: Characterization Of the Pdnps Assembliessupporting

confidence: 85%

Section: Characterization Of the Pdnps Assembliesmentioning

confidence: 99%

Surfactant‐directed Pd‐nanoparticle assemblies as efficient nanoreactors for water remediation

Huang

Yang

Lei

et al. 2020

EcoMat

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“…Au containing CTAB gels and Au NPs were prepared by previously published method [22]. CTAB was mixed with 20 mL n-hexane in a beaker.…”

Section: Methodsmentioning

confidence: 99%

Optical, structural, catalytic and electrochemical properties of the Au nanoparticles synthesized using CTAB based gels

Upadhyay

Deshmukh

Saha

et al. 2015

J Mater Sci: Mater Electron

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Gold nanoparticles (Au NPs) were synthesized using Au containing CTAB gel as a precursor. The effect of concentration of NaBH 4 on the structural, optical, catalytic and electrochemical properties of the Au NPs was also investigated. With the increase of NaBH 4 concentration from 0.1 to 0.15 M, an increase in the particle size and change in the morphology from spherical to elliptical was observed. Absorption and emission properties of the Au NPs were also probed using UV-Vis and photoluminescence spectroscopy respectively.

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“…21 More recent studies have emphasized the usage of CTAB mesophases as well as gels for NP synthesis. 22,23 The extension of the utility of CTAB as a convenient substrate for the preparation of nanoparticle-incrystal architectures is thus a signicant advance. We employ potassium iodide as an additive that leads to the emergence of iodide-rich CTAB crystals (CTAB-I).…”

Section: Introductionmentioning

confidence: 99%

Embedding plasmonic nanoparticles in soft crystals: an approach exploiting CTAB–I structures

Vasudeva,

Jayasing,

Sindogi

et al. 2024

Nanoscale Adv.

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Fast and facile preparation of CTAB based gels and their applications in Au and Ag nanoparticles synthesis

Cited by 12 publications

References 37 publications

Surfactant‐directed Pd‐nanoparticle assemblies as efficient nanoreactors for water remediation

Surfactant‐directed Pd‐nanoparticle assemblies as efficient nanoreactors for water remediation

Optical, structural, catalytic and electrochemical properties of the Au nanoparticles synthesized using CTAB based gels

Embedding plasmonic nanoparticles in soft crystals: an approach exploiting CTAB–I structures

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