Precipitation-Dissolution switchable surfactants with the potential of simultaneous retrieving of surfactants and hydrophobic organic contaminants from emulsified and micellar eluents

Pan, Jiajie; Sun, Lianlian; Li, Xuefeng; Fang, Yingjun

doi:10.1016/j.cej.2023.141297

Cited by 7 publications

(1 citation statement)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Surfactants are amphiphilic containing hydrophilic groups (e.g., hydroxyl, amino, and carboxyl groups) and hydrophobic groups (e.g., phenyl group, a long-chain methyl, and methylene), which can significantly reduce the surface tension of liquids. − Due to their unique interface properties, surfactants have been widely used in various industries such as food, medicine, pesticides, energy, and industrial production with emulsifying, catalysis, wetting, and oil extraction functions. − According to data from IHS Markit, the global surfactant market is expected to grow from 18.82 million tons in 2023 to 21.35 million tons in 2028. However, the commonly used surfactants are difficult to degrade in the short term, causing a great burden on the environment and even posing a threat to human health. − It is urgent to develop green, degradable, and widely used surfactants.…”

Section: Introductionmentioning

confidence: 99%

Self-Assembly of Cinnamic Acid-Modified Chitosan Surfactants: Synthesis, Characterization, and Applications in Emulsification

Li,

Su,

et al. 2024

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

Surfactants are extensively utilized in food, pharmaceutical, and industrial fields owing to their distinct interfacial properties. Nonetheless, their defects of poor biocompatibility and biodegradability impose a significant burden on the natural environment and on human health. Herein, we design cinnamic acid-functionalized chitosan (CC) as a biobased surfactant by substituting certain hydrophilic amino groups in chitosan molecular chains with the hydrophobic benzene rings of cinnamic acid. CC, exhibiting a surface contact angle close to 90°, demonstrates exceptional emulsification capabilities. Molecular simulations suggest that there is substantial interaction energy between CC and water, oil, and CC molecules. CC can be self-assembled into a gel network or stably distributed at the oil− water interface based on the interaction of polar groups with water and between hydrophobic groups with oil. Leveraging these interfacial characteristics, CC can be employed in the preparation of high internal phase emulsions (HIPEs), cell scaffolds with adjustable pore sizes, and aerogels for oil−water separation and dye adsorption. Notably, HIPEs loaded with curcumin and quercetin exhibit robust stability in gastric juice, intestinal targeted release, noncytotoxicity, and resistance to bacterial and mold growth even after 90 days. This work provides some references for the development of new biobased surfactants.

show abstract

Section: Introductionmentioning

confidence: 99%

Self-Assembly of Cinnamic Acid-Modified Chitosan Surfactants: Synthesis, Characterization, and Applications in Emulsification

Li,

Su,

et al. 2024

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

show abstract

Retrieval and Reuse of Surfactants From Microemulsions Enabled by a pH‐Triggered Precipitation‐Dissolution Strategy

Fan,

Yan,

Pan

et al. 2024

ChemSusChem

View full text Add to dashboard Cite

How to retrieve and reuse surfactants efficiently from surfactant‐based microemulsions (MEs) has long been a problem, which is full of challenges and needs to be solved urgently. To this end, a pH‐triggered precipitation‐dissolution (PTPD) strategy is developed. The surfactant sodium 3‐(laurylamino)propane‐1‐sulfonate (LMPS) transforms into an insoluble precipitate (the inner salt of LMPS, LMP) after reaction with HCl, by which the monophasic LMPS‐based MEs demulsified entirely, giving a separable mixture of oil, water and LMP. LMP can be retrieved efficiently (~95.3%) regardless of the ME type, and can then be conveniently restored to LMPS via reactions with NaOH. Conceptually, the retrieval of LMPS (~96.6%), toxic benzo[a]pyrene (BaP, ~99.5%) and a mixture of co‐surfactant n‐butanol and the oil phase n‐heptane (~97.1%) from the sufficiently emulsified soil eluents is achievable by respectively using the PTPD strategy and distillation, wherein the soil eluents were generated from the remediation of BaP‐contaminated soil using an oil‐in‐water LMPS‐based ME as washing agent. It reveals a promising future for the PTPD strategy in the post‐processing of soil eluents containing toxic hydrophobic organic contaminants and excessive surfactants.

show abstract

Biphasic control strategy of polymers and nanoparticles for viscous oil removal and molecular release: Synthesis, mechanism and applications

Ma,

Cameron

2024

Chemical Engineering Journal

View full text Add to dashboard Cite

Precipitation-Dissolution switchable surfactants with the potential of simultaneous retrieving of surfactants and hydrophobic organic contaminants from emulsified and micellar eluents

Cited by 7 publications

References 39 publications

Self-Assembly of Cinnamic Acid-Modified Chitosan Surfactants: Synthesis, Characterization, and Applications in Emulsification

Self-Assembly of Cinnamic Acid-Modified Chitosan Surfactants: Synthesis, Characterization, and Applications in Emulsification

Retrieval and Reuse of Surfactants From Microemulsions Enabled by a pH‐Triggered Precipitation‐Dissolution Strategy

Biphasic control strategy of polymers and nanoparticles for viscous oil removal and molecular release: Synthesis, mechanism and applications

Contact Info

Product

Resources

About