Effect of composition of post etch residues (PER) on their removal in choline chloride–malonic acid deep eutectic solvent (DES) system

Taubert, Jenny; Raghavan, Srini

doi:10.1016/j.mee.2012.12.009

Cited by 10 publications

(3 citation statements)

References 25 publications

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“…A pilot plant was constructed to test the efficacy of using DESs for large scale metal extraction. Choline chloride:urea and choline chloride:malonic acid have been shown to be effective in the removal of copper oxides and fluorides from post etch residues, and the malonic acid based liquid has also been successful in the removal of residues from the CF 4 /O 2 etching of a copper coated DUV photoresist . DESs have also shown promise in removing organic sulfides from fuels …”

Section: Metal Processing Applicationsmentioning

confidence: 99%

Deep Eutectic Solvents (DESs) and Their Applications

2014

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Section: Metal Processing Applicationsmentioning

confidence: 99%

Deep Eutectic Solvents (DESs) and Their Applications

2014

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“…DESs composed of solely bio-derived materials can be produced, e.g., choline chloride (ChCl) and urea [ 15 ], which is the most widely studied eutectic mixture. In the industrial field, DESs are currently used for metal processing [ 10 , 16 , 17 ], such as metal deposition, metal dissolution, or rust removal. On the other hand, in the field of cultural heritage conservation, DESs have only been applied as temporary consolidants [ 18 ] and cleaning agents for organic varnishes [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

Removal of Copper Corrosion Products by Using Green Deep Eutectic Solvent and Bio-Derivative Cellulose Membrane

et al. 2022

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A safe and environmentally friendly material for corrosion removal from metals is proposed in this article. Electrochemically corroded copper was selected as a target material, and a deep eutectic solvent (DES) composed of choline chloride and ascorbic acid, in a molar ratio of 2:1, was developed to this end. Aqueous solutions of the DES with a concentration above 70 wt% were found to be effective in the dissolution of patina and less aggressive towards other materials such as CaCO3, which is the main component of limestone. These concentrated DES solutions were integrated with either cotton swabs or cellulose-based membranes and used for the cleaning of electrochemically corroded copper. The membrane containing 80 wt% DES aqueous solution exhibited the most desirable cleaning ability in terms of speed and area selectivity. X-ray diffraction analysis of the corroded copper before and after the application of the membrane was performed to demonstrate the successful corrosion removal.

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“…[1][2][3][4][5][6] The hydrophobic DESs are composed of organic hydrogen bonding donors and acceptors. Their extractive capabilities have been illustrated in pharmaceuticals, [6][7][8] food industry, 9 metal industry 10,11 and carbon dioxide capture applications. 1,[12][13][14][15] They are also promising candidates for liquid-liquid extraction of micro and nano pollutants from aqueous solutions due to their immiscibility, 16,17 low volatility, 7,[18][19][20] and low toxicity.…”

Section: Introductionmentioning

confidence: 99%

Structure and hydrogen bonds of hydrophobic deep eutectic solvent‐aqueous liquid–liquid interfaces

et al. 2021

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Hydrophobic deep eutectic solvents (DESs) emerge as candidates to extract organic substrates from aqueous solutions. The DES-aqueous liquid-liquid interface plays a vital role in the extraction ability of DESs because the nonbulk structure of interfacial molecules could cause thermodynamic and kinetic barriers. One question is how the DES compositions affect the structural features of the interface. We investigate the density profile, dipole moment, and hydrogen bonds of eight hydrophobic DESaqueous interfaces using molecular dynamics simulations. The eight DESs are composed of four organic compounds: decanoic acid, menthol, thymol, and lidocaine. The results show the variations of dipole moment and hydrogen bond structure and dynamics at the interfaces. These variations could influence the extraction ability of DES through adjusting the partition and kinetics of organic substrates in the DESaqueous biphasic systems. We also analyze the relationship between the variation of these interfacial features and the size and hydrophobicity of DES components.

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Effect of composition of post etch residues (PER) on their removal in choline chloride–malonic acid deep eutectic solvent (DES) system

Cited by 10 publications

References 25 publications

Deep Eutectic Solvents (DESs) and Their Applications

Deep Eutectic Solvents (DESs) and Their Applications

Removal of Copper Corrosion Products by Using Green Deep Eutectic Solvent and Bio-Derivative Cellulose Membrane

Structure and hydrogen bonds of hydrophobic deep eutectic solvent‐aqueous liquid–liquid interfaces

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