Biochar based self cleaning superhydrophobic surface with aqueous DESphobic properties

Amirchand, Khajuria Deepika; Kaur, Kiranpreet; Singh, Vickramjeet

doi:10.1016/j.molliq.2023.121736

Cited by 8 publications

(11 citation statements)

References 51 publications

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“…The vibrational frequency at 1722 cm –1 was observed in CA owing to the C = O stretching mode. The out-of-plane bending mode for O–H demonstrated peaks in between (1500–1300 cm –1 ). , The formation of DES was confirmed by the hydrogen bonding between CA and PEG, and such hydrogen-bonding interactions showed an –OH stretching band at 3377 cm –1 as depicted in Figure . Further, the modulation of the O–H out-of-plane bending of CA was observed in DES owing to hydrogen-bonding formation between the PEG and CA, confirming the formation of DES. , The hydrogen-bond formation between the HBD and HBA causes a decline in the melting point of DES, and such a hydrogen-bond formation causes a slight shift in the –OH absorption band …”

Section: Methodsmentioning

confidence: 82%

“…Further, the modulation of the O−H out-of-plane bending of CA was observed in DES owing to hydrogen-bonding formation between the PEG and CA, confirming the formation of DES. 4,5 The hydrogen-bond formation between the HBD and HBA causes a decline in the melting point of DES, and such a hydrogen-bond formation causes a slight shift in the −OH absorption band. Working of the instrument was checked by determining the density and speed of sound of pure ethanol and water.…”

Section: Preparation and Characterization Of Desmentioning

confidence: 99%

“…Working of the instrument was checked by determining the density and speed of sound of pure ethanol and water. 5,19 Standard uncertainties in the density and speed of sound are Mass fraction purity as stated by the supplier. The densities of caffeine measured in water at different concentrations and temperatures and its comparison with literature 13,14 data have also been provided in Figure S1.…”

Section: Preparation and Characterization Of Desmentioning

confidence: 99%

“…1−6 The dissolution of various solutes has been achieved using DES due to the ability of DES to form hydrogen bonds. 5,6 Thus, an appropriate combination of parent components can result in a new solvent system with unexplored physicochemical properties and potential applications. HBA and HBA combinations can result in a liquid with a low melting point and have been explored as a potential solvent replacing conventional volatile solvent systems.…”

Section: Introductionmentioning

confidence: 99%

“…4 However, studies on PEG-based DES prepared using PEG as the HBD and organic acid (particularly citric acid, CA) as the HBA are scarce. 4,5 Data on thermodynamic properties can help us understand the various kinds of interactions present in DESbased solvent systems. The presence of water in liquid−liquid separation with DES can strongly influence the extraction efficiencies.…”

Section: Introductionmentioning

confidence: 99%

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PEGylated Deep Eutectic Solvent–Caffeine Interactions in Aqueous Solutions Evaluated by Volumetric and Spectroscopic Studies

Singh,

Pattanvall,

Indoria

2023

J. Chem. Eng. Data

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Deep eutectic solvents (DES) can be prepared with ease by mixing a suitable combination of a hydrogen-bond acceptor (HBA) and a hydrogen-bond donor (HBD) using a molar ratio. The prepared DES can have various unexplored applications, which depend on their unique physicochemical properties. Among these applications, DES have been recently studied for drug delivery and drug solubilization. The possibility of having hydrogen-bonding and polar/nonpolar interactions with a drug molecule can help DES solubilize the sparingly soluble drug molecules. The nature of these interactions can be modulated by a change in temperature, concentration, or even by the presence of moisture. Interactions between DES and drug molecules mediated by water were studied by measuring the volumetric properties and UV− visible spectra of caffeine (CAF) in aqueous DES solutions as a function of concentration and temperature. PEG-400 and citric acid were mixed in an appropriate molar ratio for the preparation of PEGylated DES. The volumetric properties were studied by measuring the density and speed of sound at (293.15−318.15) K and 0.1 MPa. UV−visible studies were performed at 298.15, 308.15, and 318.15 K. Apparent molar volumes, infinite dilution partial molar volumes, and volumetric transfer parameters were evaluated and interpreted to explain the solute−solute, solute−solvent, and solute−cosolute interactions between CAF and DES in aqueous mixtures. The results suggest the presence of various interactions among the components of DES and CAF. Further, dimerization of CAF caused a decrease of absorbance with an increase in cosolute concentration.

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Section: Methodsmentioning

confidence: 82%

Section: Preparation and Characterization Of Desmentioning

confidence: 99%

Section: Preparation and Characterization Of Desmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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PEGylated Deep Eutectic Solvent–Caffeine Interactions in Aqueous Solutions Evaluated by Volumetric and Spectroscopic Studies

Singh,

Pattanvall,

Indoria

2023

J. Chem. Eng. Data

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Superhydrophobic Surface-Assisted Preparation of Microspheres and Supraparticles and Their Applications

Pan,

Shao,

Fan

et al. 2024

Nano-Micro Lett.

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Superhydrophobic surface (SHS) has been well developed, as SHS renders the property of minimizing the water/solid contact interface. Water droplets deposited onto SHS with contact angles exceeding 150°, allow them to retain spherical shapes, and the low adhesion of SHS facilitates easy droplet collection when tilting the substrate. These characteristics make SHS suitable for a wide range of applications. One particularly promising application is the fabrication of microsphere and supraparticle materials. SHS offers a distinct advantage as a universal platform capable of providing customized services for a variety of microspheres and supraparticles. In this review, an overview of the strategies for fabricating microspheres and supraparticles with the aid of SHS, including cross-linking process, polymer melting, and droplet template evaporation methods, is first presented. Then, the applications of microspheres and supraparticles formed onto SHS are discussed in detail, for example, fabricating photonic devices with controllable structures and tunable structural colors, acting as catalysts with emerging or synergetic properties, being integrated into the biomedical field to construct the devices with different medicinal purposes, being utilized for inducing protein crystallization and detecting trace amounts of analytes. Finally, the perspective on future developments involved with this research field is given, along with some obstacles and opportunities.

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Functional biocarbon-based coatings for wood protection and indoor air depollution

Zouari,

Marrot,

DeVallance

2024

Building and Environment

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Biochar based self cleaning superhydrophobic surface with aqueous DESphobic properties

Cited by 8 publications

References 51 publications

PEGylated Deep Eutectic Solvent–Caffeine Interactions in Aqueous Solutions Evaluated by Volumetric and Spectroscopic Studies

PEGylated Deep Eutectic Solvent–Caffeine Interactions in Aqueous Solutions Evaluated by Volumetric and Spectroscopic Studies

Superhydrophobic Surface-Assisted Preparation of Microspheres and Supraparticles and Their Applications

Functional biocarbon-based coatings for wood protection and indoor air depollution

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