Fluridone adsorption–desorption on organo-clays

Yaron-Marcovich, Dana; Nir, Shlomo; Chen, Yona

doi:10.1016/j.clay.2003.06.002

Cited by 25 publications

(11 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fluridone binds to organic matter, which would make it less available in soils with a high organic matter content. The highest herbicidal efficacy of fluridone is obtained in soils with a low organic matter content, and these results are reflected in both the seed germination and seedling mortality results of the present study, where after‐ripened L. rigidum seeds had greater and more prolonged stimulation of germination, and higher seedling mortality, on fluridone‐treated river sand (organic carbon 0.8%) compared with potting mix (organic carbon 7.6%).…”

Section: Discussionmentioning

confidence: 99%

Fluridone: a combination germination stimulant and herbicide for problem fields?

Goggin

Powles

2014

Pest Management Science

View full text Add to dashboard Cite

show abstract

Section: Discussionmentioning

confidence: 99%

Fluridone: a combination germination stimulant and herbicide for problem fields?

Goggin

Powles

2014

Pest Management Science

View full text Add to dashboard Cite

show abstract

“…To the best of our knowledge, this is the first report on HRTEM studies conducted on the organic cations BTMA, BTEA, and fluridone intercalated into Na-montmorillonite. The work is based on our previous study (8), which showed that preadsorbing Na-montmorillonite clay with the organic cations hexadecyltrimethylammonium (HDTMA) and benzyltrimethylammonium (BTMA) resulted in a 4-fold enhancement of the adsorption coefficient of fluridone from water in comparison to the Na-montmorillonite alone.…”

Section: Introductionmentioning

confidence: 99%

High Resolution Electron Microscopy Structural Studies of Organo-Clay Nanocomposites

Yaron-Marcovich

Chen

Nir

et al. 2004

Environ. Sci. Technol.

View full text Add to dashboard Cite

Engineering of clay nanocomposite materials by modification of their surfaces can enable the control of retention, transport, and persistence of toxic chemicals in the geosystem. The properties and interactions of clay nanocomposites have been widely studied, but little information exists on their microstructure at a range of scale extending down to atomic dimensions. The pairing of Na-montmorillonite clay with organic cations as well as with the herbicide fluridone, chosen as a model for an organic pollutant, was studied. Three organic cations were selected: hexadecyltrimethylammonium, benzyltrimethylammonium, and benzyltriethylammonium at 0%, 60%, and 100% of cation exchange capacity (CEC) loadings. A detailed microstructural analysis of the organo-clay nanocomposites and of the fluridone nanocomposites was undertaken by high-resolution transmission electron microscopy (HRTEM) and X-ray energy-dispersive spectroscopy (EDS). Morphological observations and chemical analyses were performed simultaneously on the same sample. The combined HRTEM and EDS measurements strongly suggest (a) heterogeneous local intercalation of the organic cations manifested by a range in the measured d001 spacing, implying random expansion of the clay layered structure with increased loading of the organic cations; (b) intercalation within the external layers, which is thoroughly influenced by local defect microstructure and/or edge availability of the montmorillonite nanoparticles as well as by the molecular structure of the intercalating organic cation. Additional intercalation of fluridone molecules did not affect the structure (d001 spacing) of the organo-clay nanocomposites.

show abstract

“…It was reported that modifying microclay with organic cation modifiers could enhance adsorption of organic compounds through hydrophobic interactions between them. , Multiple studies also reported the applications of microrobots for removal of organic and inorganic pollutants in water. ,,− As such, it was postulated that the fabricated Pt–C microrobots would function effectively as mobile adsorbents for the rapid removal of organophosphate pesticide improvised nerve agent fenitrothion in water. Having determined the fast motion of the fabricated microrobots, the removal efficiency of fenitrothion would be expected to improve in the presence of the mobile “cleaners”.…”

Section: Resultsmentioning

confidence: 99%

Cloisite Microrobots as Self-Propelling Cleaners for Fast and Efficient Removal of Improvised Organophosphate Nerve Agents

Marić

Nasir

Mayorga‐Martinez

et al. 2019

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Naturally available microclays are well-known materials with great adsorption capabilities that are available in nature in megatons quantities. On the contrary, artificial nanostructures are often available at high cost via precision manufacturing. Such precision nanomanufacturing is also typically used for fabrication of self-propelled micromotors and nanomachines. Herein, we utilized naturally available Cloisite microclays to fabricate autonomous self-propelled microrobots and demonstrated their excellent performances in pesticide removal due to their excellent adsorption capability. Six different modified Cloisite microrobots were investigated by sputtering their microclays with platinum (Pt) for the fabrication of platinum–Cloisite (Pt–C) microrobots. The obtained microrobots displayed fast velocities (v > 110 μm/s) with fast and efficient enhanced removal of the pesticide fenitrothion, which is also considered as improvised nerve agent. The fabricated Pt–C microrobots exhibited low cytotoxicity even at high concentrations when incubated with human lung carcinoma epithelial cells, which make them safe for human handling.

show abstract

Fluridone adsorption–desorption on organo-clays

Cited by 25 publications

References 26 publications

Fluridone: a combination germination stimulant and herbicide for problem fields?

Fluridone: a combination germination stimulant and herbicide for problem fields?

High Resolution Electron Microscopy Structural Studies of Organo-Clay Nanocomposites

Cloisite Microrobots as Self-Propelling Cleaners for Fast and Efficient Removal of Improvised Organophosphate Nerve Agents

Contact Info

Product

Resources

About