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Wu Y, Jing J, Li X, Yue W, Qi J, Wang N, Lu H. CO 2-Responsive Hydrophobic Deep Eutectic Solvent Based on Surfactant-Free Microemulsion-Mediated Synthesis of BaF 2 Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:1181-1189. [PMID: 36633940 DOI: 10.1021/acs.langmuir.2c02991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
A new form of surfactant-free microemulsion (SFME) including hydrophobic deep eutectic solvent (HDES)/ethanol/water was constructed based on its CO2 response, and three regions, that is, HDES-in-water (HDES/W), bicontinuous (B.C.), and water-in-HDES (W/HDES) regions, were recognized. It is anticipated that SFMEs with tunable microstructures have outstanding applications as nanoreactors in reaction processes. The feasibility of preparing nanoparticles from HDES/ethanol/water SFME using barium fluoride (BaF2) as a model nanoparticle was investigated. HDES-based microemulsions benefit from HDES's excellent properties (novel, low toxicity, CO2-responsive, easy availability) and have potential in universal reactions, drug delivery, advanced material fabrication, etc. In this research, HDES-based microemulsions were prepared using HDES as the oil phase. Phase equilibria and microstructure were investigated using a ternary phase diagram, UV spectrophotometry, and the conductivity method. The CO2 switchable characteristics of the HDES-based microemulsions were investigated. HDES-based microemulsions were proposed as nanoreactors for the synthesis of barium fluoride nanomaterials. The microemulsion structure can modulate the size, morphology, and physicochemical properties of the nanoparticles through the CO2 switchable properties. It is argued that nanoreactors constructed with versatile HDES will offer a new direction for creation of cutting-edge scientific applications.
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Affiliation(s)
- Yang Wu
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu610500, PR China
| | - Junhao Jing
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu610500, PR China
| | - Xiaojiang Li
- Chongqing University of Science & Technology, Chongqing, Chongqing401331, China
| | - Wenjian Yue
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu610500, PR China
| | - Jie Qi
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu610500, PR China
| | - Na Wang
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu610500, PR China
| | - Hongsheng Lu
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu610500, PR China
- Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province, Chengdu610500, PR China
- Engineering Research Center of Oilfield Chemistry, Ministry of Education, Chengdu610500, PR China
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Influence evaluation of ionic liquids on the alteration of nitrification waste for thermal stability. J Loss Prev Process Ind 2023. [DOI: 10.1016/j.jlp.2023.104977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Kong J, Li L, Zeng Q, Long J, He H, Wang Y, Liu S, Li X. Production of 4-Ethylphenol from Lignin Depolymerization in a Novel Surfactant-Free Microemulsion Reactor. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c03636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Juanhua Kong
- School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Lixia Li
- School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Qiang Zeng
- School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Jinxing Long
- School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Hongyan He
- Beijing Key Laboratory of Ionic Liquids Clean Process, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Yingying Wang
- South China Advanced Institute for Soft Matter Science and Technology, South China University of Technology, Guangzhou 510640, China
| | - Sijie Liu
- School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Xuehui Li
- School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
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Xu J, Cui Y, Wang R, Shi Z, Wu C, Li D. Mesoporous La-based nanorods synthesized from a novel IL-SFME for phosphate removal in aquatic systems. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Kong J, Li L, Zeng Q, Cai Z, Wang Y, He H, Liu S, Li X. Oxidation of organosolv lignin in a novel surfactant-free microemulsion reactor. BIORESOURCE TECHNOLOGY 2021; 321:124466. [PMID: 33321297 DOI: 10.1016/j.biortech.2020.124466] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 11/23/2020] [Accepted: 11/25/2020] [Indexed: 06/12/2023]
Abstract
Lignin is considered as a promising substitute for fossil resources, but its efficient conversion remains a huge challenge due to the structural complexity and immiscibility with typical solvents. Herein, a series of surfactant-free microemulsion reactors comprised of n-octane, water and n-propanol were designed and their corresponding phase behaviors alongside their ability to intensify oxidative depolymerization of lignin were explored. Experimental results show that the phenolic monomer yield improves substantially (40-500 wt%) by comparison with processes performed in a single solvent. Detailed characterizations also suggest that the above intensification is rationalized by the solubilization effect of microemulsion system and directional aggregation of lignin at the microemulsion interface.
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Affiliation(s)
- Juanhua Kong
- School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Lixia Li
- School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Qiang Zeng
- School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Zhenping Cai
- School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Yingying Wang
- South China Advanced Institute for Soft Matter Science and Technology, South China University of Technology, Guangzhou 510640, China
| | - Hongyan He
- Beijing Key Laboratory of Ionic Liquids Clean Process, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Sijie Liu
- School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Xuehui Li
- School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
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Zhang X, Song M, Chai J, Cui X, Wang J. Preparation, characterization and application of a surfactant-free microemulsion containing 1-octen-3-ol, ethanol, and water. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2019.112278] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Sun B, Chai J, Chai Z, Zhang X, Cui X, Lu J. A surfactant-free microemulsion consisting of water, ethanol, and dichloromethane and its template effect for silica synthesis. J Colloid Interface Sci 2018; 526:9-17. [DOI: 10.1016/j.jcis.2018.04.072] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Revised: 04/12/2018] [Accepted: 04/17/2018] [Indexed: 02/06/2023]
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Xu J, Song J, Deng H, Hou W. Surfactant-Free Microemulsions of 1-Butyl-3-methylimidazolium Hexafluorophosphate, Diethylammonium Formate, and Water. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:7776-7783. [PMID: 29889531 DOI: 10.1021/acs.langmuir.8b00974] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Surfactant-free microemulsions (SFMEs) are a unique kind of microemulsion, which form from immiscible fluids (i.e., oil and water phases) in the presence of amphi-solvents rather than traditional surfactants. In comparison with traditional surfactant-based microemulsions (SBMEs), SFMEs have received much less attention, and the current understanding of the unique system is very limited. Herein, we report a SFME consisting of the hydrophobic ionic liquid (IL) 1-butyl-3-methylimidazolium hexafluorophosphate (bmimPF6), the protic IL diethylammonium formate (DEAF), and water, in which the bmimPF6 and DEAF are used as the oil phase and amphi-solvent, respectively. Three kinds of microstructures, namely, water-in-bmimPF6 (W/IL), bicontinuous (BC), and bmimPF6-in-water (IL/W), are identified for the SFME, using cyclic voltammetry, cryo-TEM, and DLS techniques. Especially, the volumetric and surface free energy properties of the SFME are investigated by excess molar volume ( VmE) and surface tension (γ) measurements, and they are found to be similar to those of SBMEs. Discontinuous changes in VmE and γ with the system compositions are observed as the system microstructures change, which can be used to identify the structural transition of SFMEs. We think this study provides a better understanding of SFME features.
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Affiliation(s)
- Jie Xu
- State Key Laboratory Base of Eco-chemical Engineering , Qingdao University of Science and Technology , Qingdao 266042 , P. R. China
| | - Jiaxin Song
- State Key Laboratory Base of Eco-chemical Engineering , Qingdao University of Science and Technology , Qingdao 266042 , P. R. China
| | - Huanhuan Deng
- State Key Laboratory Base of Eco-chemical Engineering , Qingdao University of Science and Technology , Qingdao 266042 , P. R. China
| | - Wanguo Hou
- Key Laboratory of Colloid and Interface Chemistry (Ministry of Education) , Shandong University , Jinan 250100 , P. R. China
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Liu Y, Xu J, Deng H, Song J, Hou W. A surfactant-free microemulsion composed of isopentyl acetate, n-propanol, and water. RSC Adv 2018; 8:1371-1377. [PMID: 35540868 PMCID: PMC9077043 DOI: 10.1039/c7ra12594a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 12/19/2017] [Indexed: 11/23/2022] Open
Abstract
It has been demonstrated that in the absence of traditional surfactants, microemulsions can form from a ternary mixture of oil, water, and an amphi-solvent. These microemulsions are called surfactant-free microemulsions (SFMEs). To date, only a small number of SFME systems have been reported, and the current understanding of SFMEs is very limited. Herein, we report an SFME consisting of isopentyl acetate (IA), n-propanol, and water, in which IA (a simple ester compound) and n-propanol are used as the oil phase and amphi-solvent, respectively. The microstructures and structural transition of the SFME were investigated by cyclic voltammetry, fluorescence spectroscopy, and UV-visible spectroscopy techniques. Moreover, three kinds of microstructures, namely, oil-in-water (O/W), bicontinuous (BC), and water-in-oil (W/O), have been identified in the SFME, which are directly verified by cryo-TEM observations. A change in the composition of the SFME may lead to a structural transition from O/W through BC to W/O or vice versa, which is similar to the case of traditional surfactant-based microemulsions (SBMEs). To the best of our knowledge, this is the first time that the microstructures and structural transition of an SFME obtained using a simple ester compound as the oil phase have been identified. Surfactant-free microemulsions (SFMEs) can form from the mixture of isopentyl acetate (oil phase), n-propanol (amphi-solvent), and water. They may show W/O, bicontinuous (BC), and O/W microstructures depending on the composition of the SFMEs.![]()
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Affiliation(s)
- Yuan Liu
- State Key Laboratory Base of Eco-chemical Engineering
- Qingdao University of Science and Technology
- Qingdao
- P. R. China
| | - Jie Xu
- State Key Laboratory Base of Eco-chemical Engineering
- Qingdao University of Science and Technology
- Qingdao
- P. R. China
| | - Huanhuan Deng
- State Key Laboratory Base of Eco-chemical Engineering
- Qingdao University of Science and Technology
- Qingdao
- P. R. China
| | - Jiaxin Song
- State Key Laboratory Base of Eco-chemical Engineering
- Qingdao University of Science and Technology
- Qingdao
- P. R. China
| | - Wanguo Hou
- Key Laboratory for Colloid and Interface Chemistry (Ministry of Education)
- Shandong University
- Jinan
- P. R. China
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