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Wang W, Zhou R, Di S, Mao X, Huang WC. Switchable CO 2-Responsive Janus Nanoparticle for Lipase Catalysis in Pickering Emulsion. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:9967-9973. [PMID: 38639643 DOI: 10.1021/acs.jafc.4c00498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
The use of convertible immobilized enzyme carriers is crucial for biphasic catalytic reactions conducted in Pickering emulsions. However, the intense mechanical forces during the conversion process lead to enzyme leakage, affecting the stability of the immobilized enzymes. In this study, a CO2-responsive switchable Janus (CrSJ) nanoparticle (NP) was developed using silica NP, with one side featuring aldehyde groups and the other side adsorbing N,N-dimethyldodecylamine. A switchable Pickering emulsion catalytic system for biphasic interface reactions was prepared by covalently immobilizing lipase onto the CrSJ NPs. The CO2-responsive nature of the CrSJ NPs allowed for rapid conversion of the Pickering emulsion, and covalent immobilization substantially reduced lipase leakage while enhancing the stability of the immobilization during the conversion process. Impressively, after repeated transformations, the Pickering emulsion still maintains its original structure. Following 10 consecutive cycles of esterification and hydrolysis reactions, the immobilized enzyme's activity remains at 77.7 and 79.5% of its initial activity, respectively. The Km of the CrSJ catalytic system showed no significant change compared to the free enzyme, while its Vmax values were 1.2 and 1.6 times that of the free enzyme in esterification and hydrolysis reactions, respectively.
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Affiliation(s)
- Wei Wang
- State Key Laboratory of Marine Food Processing and Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China
- Qingdao Key Laboratory of Food Biotechnology, Qingdao 266404, China
- Key Laboratory of Biological Processing of Aquatic Products, China National Light Industry, Qingdao 266404, China
| | - Ruoyu Zhou
- State Key Laboratory of Marine Food Processing and Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China
- Qingdao Key Laboratory of Food Biotechnology, Qingdao 266404, China
- Key Laboratory of Biological Processing of Aquatic Products, China National Light Industry, Qingdao 266404, China
| | - Simiao Di
- State Key Laboratory of Marine Food Processing and Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China
- Qingdao Key Laboratory of Food Biotechnology, Qingdao 266404, China
- Key Laboratory of Biological Processing of Aquatic Products, China National Light Industry, Qingdao 266404, China
| | - Xiangzhao Mao
- State Key Laboratory of Marine Food Processing and Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
- Qingdao Key Laboratory of Food Biotechnology, Qingdao 266404, China
- Key Laboratory of Biological Processing of Aquatic Products, China National Light Industry, Qingdao 266404, China
| | - Wen-Can Huang
- State Key Laboratory of Marine Food Processing and Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China
- Qingdao Key Laboratory of Food Biotechnology, Qingdao 266404, China
- Key Laboratory of Biological Processing of Aquatic Products, China National Light Industry, Qingdao 266404, China
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Zhao Z, Zhang L, Zhang H, Lu G, Meng T, Hao H, Zhang Y, Li J, Yan H. Computational Insights into a CO 2-Responsive Emulsion Prepared Using the Superamphiphile Assembled by Electrostatic Interactions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:938-949. [PMID: 38134444 DOI: 10.1021/acs.langmuir.3c03140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2023]
Abstract
The superamphiphiles exhibit broad prospects for fabricating stimuli-responsive emulsions. Because the superamphiphiles are assembled via noncovalent interactions, they have the advantage of fast response and high efficiency. Recently, a series of switchable emulsions using CO2-responsive superamphiphiles have been developed, which extends the applications of CO2-responsive materials in widespread field. However, there is still a lack of fundamental understanding on the switching mechanism related to the assembled structure of superamphiphiles at the oil-water interface. We employed molecular dynamics (MD) simulations to investigate the reversible emulsification/demulsification process of a responsive emulsion system stabilized by a recently developed responsive superamphiphile (BTOA), which consists of oleic acid (OA) and cationic amine (named 1,3-bis(aminopropyl)tetramethyldisiloxane, BT). The simulation results present the morphologies in both the emulsion and demulsification states. It is found that the ionized OA- and the protonated BT+ together form an adsorption layer at the oil-water interface. The hydrophobic parts of BT+ are inserted into the adsorption layer, and the two amine groups contact the water phase. This adsorption layer reduces the interfacial tension and stabilizes the emulsion. After the bubbling of CO2, the surfactants were fully protonated to OA and BT2+. Because of the changes in the molecular polarity, OA and BT2+ entered the oil and water phases, respectively, resulting in demulsification. The structural and dynamical properties were analyzed to reveal the different intermolecular interactions that were responsible for the reversible reversibility of the emulsion. The observations are considered to be complementary to experimental studies and are expected to provide deeper insights into studies on developing responsive materials via supramolecular assemblies.
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Affiliation(s)
- Zhen Zhao
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng, Shandong 252059, P. R. China
| | - Lu Zhang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252059, P. R. China
| | - Hao Zhang
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng, Shandong 252059, P. R. China
| | - Guoqiang Lu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical & Materials Engineering, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, P. R. China
| | - Tong Meng
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng, Shandong 252059, P. R. China
| | - Hongguo Hao
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252059, P. R. China
| | - Yongmin Zhang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical & Materials Engineering, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, P. R. China
| | - Jun Li
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng, Shandong 252059, P. R. China
| | - Hui Yan
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng, Shandong 252059, P. R. China
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Cunningham MF, Jessop PG. CO 2-Switchable colloids. Chem Commun (Camb) 2023; 59:13272-13288. [PMID: 37872815 DOI: 10.1039/d3cc03929c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
The development and design of CO2-switchable colloidal particles is described. A presentation of the principles of CO2 switching, especially as they apply to colloids, is followed by recent progress in the preparation of several types of colloidal particles (polymer nanoparticles, metal-organic frameworks (MOFs), quantum dots, graphene, cellulose nanocrystals, carbon nanotubes) for various applications (Pickering stabilizers, catalysts, latexes), and our perspective on future opportunities.
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Affiliation(s)
- Michael F Cunningham
- Queen's University, Department of Chemical Engineering, 19 Division Street, Kingston, ON, Canada.
| | - Philip G Jessop
- Queen's University, Department of Chemistry, 90 Bader Lane, Kingston, ON, Canada
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Meng T, Zhao Z, Li G, Li J, Yan H. Molecular Dynamics Study of Silica Nanoparticles and CO 2-Switchable Surfactants at an Oil-Water Interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:11283-11293. [PMID: 37524083 DOI: 10.1021/acs.langmuir.3c00949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/02/2023]
Abstract
Adsorbing CO2-sensitive surfactants on the surface of nanoparticles is an important strategy for preparing stimuli-responsive Pickering emulsions. However, the microscopic mechanisms are still limited, owing to a lack of intuitive understanding at the molecular level on the interactions between nanoparticle and switchable surfactants at the oil-water interface. We employed the molecular dynamics (MD) simulations to explore the mechanism behind the reversible emulsification/demulsification of a Pickering emulsion stabilized by silica nanoparticles (NPs) and CO2-switchable surfactants, named N-(3-(dimethylamino)propyl)alkyl amide (CPMA). MD results show that the protonated surfactant CPMAH+ has strong hydrophilicity, forming an adsorption layer at the oil-water interface. The ionic surfactants can be tightly adsorbed on NP surface through electrostatic interactions. Thus, the formed colloid particle has both hydrophobic and hydrophilic properties, which is a key factor in stabilizing emulsion. When CPMAH+ molecules were deprotonated to CPMA, the hydration activity of the headgroups reduced greatly, inducing a mixture with oil molecules. There are still a certain number of CPMA molecules residing at the oil-water interface due to the hydrophilic amine groups. The results from repeated simulations show that NP can either stay in the water phase or locate at the interface. Even NP was finally adsorbed on the interface and combined with CPMA or oil molecules, the adsorption configuration of CPMA on the NP surface was essentially different from that of CPMAH+. The potential of mean force confirmed that the combination between NP and CPMA is quite unstable due to the disappearance of electrostatic attraction. Different binding configurations and stability between NP and CPMA or CPMAH+ were the fundamental reason for the reversible emulsification/demulsification of Pickering emulsion.
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Affiliation(s)
- Tong Meng
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Zhen Zhao
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Guangyong Li
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Jun Li
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Hui Yan
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng, Shandong 252059, China
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Ge S, Zhang S, Li X, Li A, Wang W, Tan G, Sui X, Li Q. Design of Proanthocyanidins and TiO 2 Nanoparticles-Based Novel Emulsions as a Platform for UV Protection. Chempluschem 2023; 88:e202300287. [PMID: 37528443 DOI: 10.1002/cplu.202300287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 08/01/2023] [Accepted: 08/01/2023] [Indexed: 08/03/2023]
Abstract
A white oil-in-water novel emulsion stabilized by TiO2 nanoparticles with UVB shielding properties and proanthocyanidins with antioxidant activity was prepared, where the proanthocyanidins aggregated at the oil-water interface to reduce interfacial tension while TiO2 nanoparticles were dispersed in the continuous water phase to hinder droplet coalescence. It was found that the average oil droplet size was less than 10 μm and decreased with the increase of proanthocyanidins concentration, but the increase of the content of TiO2 nanoparticles had little effect on it. The combination of TiO2 nanoparticles and proanthocyanidins was versatile for oil phases with different polarities, and the resulting emulsion exhibited high stability in the face of centrifugation, heating and prolonging storage time. After encapsulating the UVA filter avobenzone in white oil, the emulsion was endowed with the ability to resist UVB and UVA. Further, the emulsion showed great free radical scavenging ability for superoxide anion radical (⋅O2 - ), hydroxyl radical (⋅OH) with the clearance rate of over 70 %, indicating the good antioxidant activity. The ingenious combination of UVB, UVA filter and antioxidant with emulsion as carrier provides a new idea for the preparation of full-band sunscreen emulsion.
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Affiliation(s)
- Shujin Ge
- School of Materials Science and Engineering, Shandong University of Technology, Zibo, Shandong, 255049, P. R. China
| | - Shang Zhang
- School of Materials Science and Engineering, Shandong University of Technology, Zibo, Shandong, 255049, P. R. China
| | - Xueshu Li
- School of Materials Science and Engineering, Shandong University of Technology, Zibo, Shandong, 255049, P. R. China
| | - Aixiang Li
- School of Materials Science and Engineering, Shandong University of Technology, Zibo, Shandong, 255049, P. R. China
| | - Weiwei Wang
- School of Materials Science and Engineering, Shandong University of Technology, Zibo, Shandong, 255049, P. R. China
| | - Guanglei Tan
- Shandong Linglong Rubber Technology Co., Ltd, Yantai, Shandong, 253000, P. R. China
| | - Xiaofei Sui
- Shandong Linglong Rubber Technology Co., Ltd, Yantai, Shandong, 253000, P. R. China
| | - Qiuhong Li
- School of Materials Science and Engineering, Shandong University of Technology, Zibo, Shandong, 255049, P. R. China
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Yan X, Zhao M, Yan R, Wang X, Dai C. Statistical analysis of gelation mechanism of high-temperature CO2-responsive smart gel system. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2023]
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Xue L, Li H, Pei X, Cui Z, Song B. Pickering Emulsions Synergistically Stabilized by Aliphatic Primary Amines and Silica Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:14109-14117. [PMID: 36349864 DOI: 10.1021/acs.langmuir.2c02072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Innovation in emulsion compositions is necessary to enrich emulsion formulations and applications. Herein, Pickering emulsions were prepared using silica nanoparticles and aliphatic primary amines with an oil-water ratio of 1:1 (v/v). Contact angle experiments revealed that the in situ hydrophobization of nanoparticles was caused by the surface adsorption of amine molecules. Notably, the interactions between amine compounds and the surface of silica nanoparticles were electrostatic attractions and mutual hydrogen bonding. The existence of hydrogen bonds was further confirmed by demulsification experiments using a chaotropic agent DMF and increasing temperatures. The hydrophobicity of silica nanoparticles can be effectively improved using most commercially available aliphatic primary amines such as n-hexylamine, n-octylamine, n-decylamine, dodecylamine, and tetradecylamine. The minimum concentrations of the aforementioned amines necessary for stabilizing the emulsions with 0.3 wt % silica nanoparticles are 3, 0.6, 0.3, 0.06, and 0.03 mM, respectively, decreasing significantly with increasing alkyl chain length. With the increase of the amine concentrations, the hydrophobicity of silica particles monotonically increased and finally resulted in the inversion of emulsions. The amine concentrations for emulsion phase inversion were 150, 40, 30, 20, and 20 mM, respectively, in the presence of 0.3 wt % silica nanoparticles. In this work, silica nanoparticles were hydrophobized using aliphatic primary amines. The composite stabilizers developed are useful for developing novel stimuli-responsive Pickering emulsions, while the synergistic effects introduced herein are also helpful in expanding the hydrophobization methods available for nanoparticles.
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Affiliation(s)
- Linyu Xue
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Hongye Li
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Xiaomei Pei
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Zhenggang Cui
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Binglei Song
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
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Ye S, Zhang W, Zhai Z, Song B, Shang S, Song Z. Fully bio-based CO2-responsive Pickering gel emulsions stabilized by cellulose nanocrystals combined with a rosin-based surfactant. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Li S, Li S, Du K, Zhu J, Shang L, Zhang K. Synthesis and stability of switchable CO 2-responsive foaming coupled with nanoparticles. iScience 2022; 25:105091. [PMID: 36164653 PMCID: PMC9508482 DOI: 10.1016/j.isci.2022.105091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 06/03/2022] [Accepted: 09/01/2022] [Indexed: 11/29/2022] Open
Abstract
CO2-responsive foaming has been drawing huge attention due to its unique switching characteristics in academic research and industrial practices, whereas its stability remains questionable for further applications. In this paper, a new CO2-switchable foam was synthesized by adding the preferably selected hydrophilic nanoparticle N20 into the foaming agent C12A, through a series of analytical experiments. Overall, the synergy between cationic surfactants and nanoparticles with a contact angle of 37.83° is the best. More specifically, after adding 1.5 wt% N20, the half-life of foam is 14 times longer than that of pure C12A foam. What’s more, the C12A-N20 solution is validated to own distinctive CO2-N2 switching features because very slight foaming degradations are observed in terms of the foaming volume and half-life time even after three cycles of CO2-N2 injections. This study is of paramount importance pertaining to future CO2 foam research and applications in energy and environmental practices. Cationic surfactants have the best synergy with NPs with a contact angle of 37.83° The foam stability increased with the increase of NPs concentration CO2/N2 can control the foaming properties of C12A-N20 solution and are reversible
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Affiliation(s)
- Songyan Li
- Key Laboratory of Unconventional Oil & Gas Development (China University of Petroleum (East China)), Ministry of Education, Qingdao 266580, P. R. China.,School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Shaopeng Li
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Kexin Du
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Jianzhong Zhu
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Liying Shang
- Engineering Technology Branch, CNOOC Energy Development Co., Ltd, Tianjin 300452, P. R. China
| | - Kaiqiang Zhang
- Institute of Energy, Peking University, Beijing 100871, P. R. China.,Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK
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Zhang L, Zhang G, Ge J, Jiang P, Ding L. pH- and thermo-responsive Pickering emulsion stabilized by silica nanoparticles and conventional nonionic copolymer surfactants. J Colloid Interface Sci 2022; 616:129-140. [DOI: 10.1016/j.jcis.2022.02.067] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Revised: 02/11/2022] [Accepted: 02/16/2022] [Indexed: 11/30/2022]
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CO2-switchable oil-in-dispersion emulsions stabilized by tertiary amine surfactant and alumina particles. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128541] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Dispersion characteristics of polypropylene/organo-modified single-walled carbon nanotube composites with a long-chain phosphonic acid added as the third dispersant component and their drawn orientation. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04175-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Ge S, Zhang S, Chang X, Li A, Wang W, Li Q, Wang Z. Redox and pH-responsive emulsions based on TiO2 nanoparticles and ferrocene derivates. NEW J CHEM 2022. [DOI: 10.1039/d2nj03500f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We synthesized a novel surfactant ferrocene azine (FcA) and developed a redox and pH-responsive emulsion stabilized by TiO2 nanoparticles and oxidized ferrocene azine (Fc+A) with fluorescence through simple mixing instead...
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Lu Y, Zhu Y, Yang F, Xu Z, Liu Q. Advanced Switchable Molecules and Materials for Oil Recovery and Oily Waste Cleanup. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2004082. [PMID: 34047073 PMCID: PMC8336505 DOI: 10.1002/advs.202004082] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 01/19/2021] [Indexed: 05/07/2023]
Abstract
Advanced switchable molecules and materials have shown great potential in numerous applications. These novel materials can express different states of physicochemical properties as controlled by a designated stimulus, such that the processing condition can always be maintained in an optimized manner for improved efficiency and sustainability throughout the whole process. Herein, the recent advances in switchable molecules/materials in oil recovery and oily waste cleanup are reviewed. Oil recovery and oily waste cleanup are of critical importance to the industry and environment. Switchable materials can be designed with various types of switchable properties, including i) switchable interfacial activity, ii) switchable viscosity, iii) switchable solvent, and iv) switchable wettability. The materials can then be deployed into the most suitable applications according to the process requirements. An in-depth discussion about the fundamental basis of the design considerations is provided for each type of switchable material, followed by details about their performances and challenges in the applications. Finally, an outlook for the development of next-generation switchable molecules/materials is discussed.
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Affiliation(s)
- Yi Lu
- Department of Chemical and Materials EngineeringUniversity of AlbertaEdmontonAlbertaT6G 1H9Canada
| | - Yeling Zhu
- Department of Chemical and Materials EngineeringUniversity of AlbertaEdmontonAlbertaT6G 1H9Canada
| | - Fan Yang
- College of New Materials and New EnergiesShenzhen Technology UniversityShenzhen518118P. R. China
| | - Zhenghe Xu
- Department of Chemical and Materials EngineeringUniversity of AlbertaEdmontonAlbertaT6G 1H9Canada
- Department of Materials Science and EngineeringSouthern University of Science and TechnologyShenzhen518055P. R. China
| | - Qingxia Liu
- Department of Chemical and Materials EngineeringUniversity of AlbertaEdmontonAlbertaT6G 1H9Canada
- College of New Materials and New EnergiesShenzhen Technology UniversityShenzhen518118P. R. China
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Wang Y, Wang H, Li C, Sun S, Hu S. CO2-responsive Pickering emulsion stablized by modified silica nanoparticles: A dissipative particle dynamics simulation study. J IND ENG CHEM 2021. [DOI: 10.1016/j.jiec.2021.03.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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17
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Holley NP, Lee JG, Valsaraj KT, Bharti B. Synthesis and characterization of ZEin-based Low Density Porous Absorbent (ZELDA) for oil spill recovery. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Zhang L, Lu X, Liu X, Li Q, Cheng Y, Hou Q. Molecular dynamics simulation of CO 2-switchable surfactant regulated reversible emulsification/demulsification processes of a dodecane-saline system. Phys Chem Chem Phys 2020; 22:23574-23585. [PMID: 33057504 DOI: 10.1039/d0cp03904g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
CO2-Switchable surfactants are of great potential in a wide range of industrial applications related to their ability to stabilize and destabilize emulsions upon command. Molecular dynamics simulations have been performed to reveal the fundamental mechanism of the reversible emulsification/demulsification processes of a dodecane-saline system by a CO2-switchable surfactant that switches between active (i.e., N'-dodecyl-N,N-dimethylacetamidinium (DMAAH+)) and inactive (i.e., N'-dodecyl-N,N-dimethylacetamidine (DMAA)) forms. The density profiles indicate that DMAAH+ could increase the oil-water interfacial thickness to a greater extent compared to DMAA. DMAAH+ could sharply reduce the interfacial tension of the dodecane-saline system, while DMAA only exhibits a limited decrease, which is in accordance with the experimental observation that DMAAH+/DMAA can reversibly emulsify/demulsify alkane-water systems. Our simulations showed that both the number and lifetime of hydrogen bonds (HBs) between DMAA and water are almost equal to those between DMAAH+ and water. In DMAA, the N atom connecting with the alkyl tail acted as a HB acceptor, while the N atom attached by a proton in DMAAH+ acted as a HB donor. Furthermore, the HBs between DMAAH+ and HCO3- at the interfaces are relatively limited. Hence, it is deduced that the HBs are insufficient to achieve the CO2-switchability of DMAA/DMAAH+. The Lennard Jones and coulombic potentials between DMAA/DMAAH+ and other species show that the coulombic potentials between DMAAH+ and water or anions (i.e., Cl- and HCO3-) sharply decrease with the increase of DMAAH+ and are much lower than those in models with DMAA. The enhanced coulombic interactions between DMAAH+ and anions lead to a remarkable reduction in interfacial tension and the emulsification of the alkane-saline system. Therefore, coulombic interactions are of crucial importance to the reversible emulsification/demulsification processes regulated by CO2-switchable surfactants, namely DMAAH+/DMAA.
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Affiliation(s)
- Lihu Zhang
- State Key Laboratory for Ore Deposits Research, School of Earth Sciences and Engineering, Nanjing University, Nanjing, Jiangsu 210023, P. R. China.
| | - Xiancai Lu
- State Key Laboratory for Ore Deposits Research, School of Earth Sciences and Engineering, Nanjing University, Nanjing, Jiangsu 210023, P. R. China. and Key Lab of Surficial Geochemistry of Ministry of Education, School of Earth Sciences and Engineering, Nanjing University, Nanjing, Jiangsu 210023, P. R. China
| | - Xiandong Liu
- State Key Laboratory for Ore Deposits Research, School of Earth Sciences and Engineering, Nanjing University, Nanjing, Jiangsu 210023, P. R. China.
| | - Qin Li
- State Key Laboratory for Ore Deposits Research, School of Earth Sciences and Engineering, Nanjing University, Nanjing, Jiangsu 210023, P. R. China.
| | - Yongxian Cheng
- State Key Laboratory for Ore Deposits Research, School of Earth Sciences and Engineering, Nanjing University, Nanjing, Jiangsu 210023, P. R. China.
| | - Qingfeng Hou
- State Key Laboratory of Enhanced Oil Recovery, Research Institute of Petroleum Exploration and Development, China National Petroleum Corporation (CNPC), Beijing 100083, P. R. China
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19
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Sun N, Li Q, Jiang Q, Li A, Si W, Wang W. Dual responsive pickering emulsions based on ferric oxide nanoparticles and ferrocene derivates. J DISPER SCI TECHNOL 2020. [DOI: 10.1080/01932691.2019.1637753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Ning Sun
- School of Material Science and Engineering, Shandong University of Technology, Zibo, Shandong, P. R. China
| | - Qiuhong Li
- School of Material Science and Engineering, Shandong University of Technology, Zibo, Shandong, P. R. China
| | - Qiuyan Jiang
- School of Material Science and Engineering, Shandong University of Technology, Zibo, Shandong, P. R. China
| | - Aixiang Li
- School of Material Science and Engineering, Shandong University of Technology, Zibo, Shandong, P. R. China
| | - Weimeng Si
- School of Material Science and Engineering, Shandong University of Technology, Zibo, Shandong, P. R. China
| | - Weiwei Wang
- School of Material Science and Engineering, Shandong University of Technology, Zibo, Shandong, P. R. China
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20
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21
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Lai N, Zhu Q, Qiao D, Chen K, Wang D, Tang L, Chen G. CO 2/N 2-Responsive Nanoparticles for Enhanced Oil Recovery During CO 2 Flooding. Front Chem 2020; 8:393. [PMID: 32509728 PMCID: PMC7253667 DOI: 10.3389/fchem.2020.00393] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 04/15/2020] [Indexed: 11/21/2022] Open
Abstract
During CO2 flooding, serious gas channeling occurs in ultra-low permeability reservoirs due to the high mobility of CO2. The chief end of this work was to research the application of responsive nanoparticles for mobility control to enhance oil recovery. Responsive nanoparticles were developed based on the modification of nano-silica (SiO2) by 3-aminopropyltrimethoxysilane (KH540) via the Eschweiler-Clark reaction. The proof of concept for responsive nanoparticles was investigated by FT-IR, 1H-NMR, TEM, DLS, CO2/N2 response, wettability, plugging performance, and core flooding experiments. The results indicated that responsive nanoparticles exhibited a good response to control nanoparticle dispersity due to electrostatic interaction. Subsequently, responsive nanoparticles showed a better plugging capacity of 93.3% to control CO2 mobility, and more than 26% of the original oil was recovered. Moreover, the proposed responsive nanoparticles could revert oil-wet surfaces to water-wet, depending on surface adsorption to remove the oil from the surface of the rocks. The results of this work indicated that responsive nanoparticles might have potential applications for improved oil recovery in ultra-low permeability reservoirs.
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Affiliation(s)
- Nanjun Lai
- School of Chemistry and Chemical Engineering of Southwest Petroleum University, Chengdu, China.,State Key Laboratory of Oil and Gas Geology and Exploitation of Chengdu University of Technology, Chengdu, China.,Oil and Gas Field Applied Chemistry Key Laboratory of Sichuan Province, Chengdu, China
| | - Qingru Zhu
- School of Chemistry and Chemical Engineering of Southwest Petroleum University, Chengdu, China.,Oil and Gas Field Applied Chemistry Key Laboratory of Sichuan Province, Chengdu, China
| | - Dongyu Qiao
- Engineer Technology Research Institute, CNPC Xibu Drilling Engineering Company Limited, Urumqi, China
| | - Ke Chen
- China National Offshore Oil Corporation (CNOOC) Energy Development Company Limited, Tianjin, China
| | - Dongdong Wang
- School of Chemistry and Chemical Engineering of Southwest Petroleum University, Chengdu, China.,Oil and Gas Field Applied Chemistry Key Laboratory of Sichuan Province, Chengdu, China
| | - Lei Tang
- School of Chemistry and Chemical Engineering of Southwest Petroleum University, Chengdu, China.,Oil and Gas Field Applied Chemistry Key Laboratory of Sichuan Province, Chengdu, China
| | - Gang Chen
- School of Chemistry and Chemical Engineering of Southwest Petroleum University, Chengdu, China.,Oil and Gas Field Applied Chemistry Key Laboratory of Sichuan Province, Chengdu, China
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22
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Wu X, Zhen J, Song B, Gao S, Song Z, Jin J. Application of
pH‐Responsive
Viscoelastic Surfactant as Recyclable Fluid at High Temperature. J SURFACTANTS DETERG 2020. [DOI: 10.1002/jsde.12418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xuepeng Wu
- Sinopec Research Institute of Petroleum Engineering (SRIPE) Beijing 100101 China
| | - Jianwu Zhen
- Sinopec Research Institute of Petroleum Engineering (SRIPE) Beijing 100101 China
| | - Bitao Song
- Sinopec Research Institute of Petroleum Engineering (SRIPE) Beijing 100101 China
| | - Shuyang Gao
- Sinopec Research Institute of Petroleum Engineering (SRIPE) Beijing 100101 China
| | - Zhaohui Song
- Sinopec Research Institute of Petroleum Engineering (SRIPE) Beijing 100101 China
| | - Junbin Jin
- Sinopec Research Institute of Petroleum Engineering (SRIPE) Beijing 100101 China
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23
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Guo S, He S, Lu P, Zhang Y. Effects of selenium atom on the solution properties of N-alkyl-N-methylpyrrolidinium bromide. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.112652] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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24
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Ren X, He S, Liu D, Zhang Y. Multistimuli-Responsive Pickering Emulsion Stabilized by Se-Containing Surfactant-Modified Chitosan. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:3986-3994. [PMID: 32186870 DOI: 10.1021/acs.jafc.0c00010] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Particle-stabilized emulsions that can respond to external stimuli have attracted significant concerns due to their intelligent-controlled stability, whereas particle-stabilized Pickering emulsions responding to multistimuli but based on biomass have been rarely reported. Here, a multistimuli-responsive Pickering emulsion was developed using the modified chitosan as stabilizer. Due to electrostatic attraction, Se-containing anionic surfactant, sodium 11-(butylselenyl)undecylsulfate (C4SeC11S), can bind with CS at an acidic pH and form CS-C4SeC11S complexes which can further self-associate to form micrometer-sized particles with the character of partially hydrophobicity. Therefore, at pH < pKa, an oil-in-water Pickering emulsion can be formed using CS-C4SeC11S particles as stabilizers and can spontaneously respond to redox, ion, and pH. First, with the addition of oxidation, the hydrophilicity of C4SeC11S was enhanced, and thus, hydrophobic association of CS-C4SeC11S decreased, leading to the disruption of CS-C4SeC11S particles. Hence, the emulsion destabilized. The demulsification process is closely related with the dosage of oxidant and the oxidation time. Second, introduction of a competitive ion (e.g., CTAB) could break the binding between C4SeC11S and CS, leading to the disruption of particle emulsifier. Thereby, demulsification occurred. Third, with sequentially increasing/decreasing pH, the emulsion can be switched from stable to unstable and then to stable again accordingly. Such a unique pH-responsive behavior has never been discovered in other pH-responsive Pickering emulsions. All of the stimuli-responsive behaviors were reversible. Upon alternately adding oxidant/reductant, CTAB/C4SeC11S, or base/acid, the current emulsion can be reversibly switched off (destabilization) and on (stabilization). Such a Pickering emulsion may be a good candidate as a vehicle of functional ingredient.
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Affiliation(s)
- Xiaofei Ren
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical & Materials Engineering, Jiangnan University, Wuxi 214122, People's Republic of China
| | - Shuai He
- College of Chemistry and Environmental Protection Engineering, Southwest Minzu University, Chengdu 610041, China
| | - Deqiong Liu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical & Materials Engineering, Jiangnan University, Wuxi 214122, People's Republic of China
| | - Yongmin Zhang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical & Materials Engineering, Jiangnan University, Wuxi 214122, People's Republic of China
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25
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Daza LM, Percebom AM, Pérez-Gramatges A. Polymer-coated cationic silica nanoparticles for slow-release Pickering emulsions. Colloid Polym Sci 2020. [DOI: 10.1007/s00396-020-04639-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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26
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Liu L, Pu X, Zhou Y, Zhou J, Luo D, Ren Z. Smart Pickering water-in-oil emulsion by manipulating interactions between nanoparticles and surfactant as potential oil-based drilling fluid. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2019.124246] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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27
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Switching Pickering emulsion stabilized by Chitosan-SDS complexes through ion competition. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2019.124316] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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28
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CO2/N2 switchable aqueous foam stabilized by SDS/C12A surfactants: Experimental and molecular simulation studies. Chem Eng Sci 2019. [DOI: 10.1016/j.ces.2019.115218] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Guan X, Liu D, Lu H, Huang Z. CO2 responsive emulsions: Generation and potential applications. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.123919] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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30
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Li S. Effect of Pickering emulsion on the mechanical performances and fracture toughness of epoxy composites. POLYM ADVAN TECHNOL 2019. [DOI: 10.1002/pat.4808] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Shuiping Li
- College of Civil Science and EngineeringYangzhou University Yangzhou 225127 China
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31
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32
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Jiang Q, Sun N, Li Q, Si W, Li J, Li A, Gao Z, Wang W, Wang J. Redox-Responsive Pickering Emulsions Based on Silica Nanoparticles and Electrochemical Active Fluorescent Molecules. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:5848-5854. [PMID: 30964688 DOI: 10.1021/acs.langmuir.9b00250] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In this paper, we report a novel redox-responsive water-in-oil Pickering emulsion stabilized by negatively charged silica nanoparticles in combination with a trace amount of redox switchable fluorescent molecule ferrocene azine (FcA), in which ferrocene serves as a redox-sensitive group and anthryl unit serves as a fluorescence emission center. By alternately adding oxidants and reducing agents at a moderate condition, the amphiphilicity of silica nanoparticles changes because of the adsorption of Fc+A and the desorption of FcA on the silica surface. On the one hand, the stability of emulsions can be transformed between stable and unstable at ambient temperature via redox trigger and the regulation process can be cycled at least three times. On the other hand, the fluorescent intensity of the FcA molecule can be regulated by redox stimuli; thus, the change in fluorescent behavior of the emulsion droplets is observed upon redox cycles, which makes it useful in the fluorescent label of stimuli-responsive Pickering emulsions. This work provides a deep understanding of the regulation mechanism of Pickering emulsions upon redox stimuli and opens the new way for in situ fluorescent label of stimulus-responsive Pickering emulsions without introducing additional fluorescent molecules.
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Affiliation(s)
- Qiuyan Jiang
- School of Materials Science and Engineering , Shandong University of Technology , Zibo , Shandong 255049 , P. R. China
| | - Ning Sun
- School of Materials Science and Engineering , Shandong University of Technology , Zibo , Shandong 255049 , P. R. China
| | - Qiuhong Li
- School of Materials Science and Engineering , Shandong University of Technology , Zibo , Shandong 255049 , P. R. China
| | - Weimeng Si
- School of Materials Science and Engineering , Shandong University of Technology , Zibo , Shandong 255049 , P. R. China
| | - Jiao Li
- School of Materials Science and Engineering , Shandong University of Technology , Zibo , Shandong 255049 , P. R. China
| | - Aixiang Li
- School of Materials Science and Engineering , Shandong University of Technology , Zibo , Shandong 255049 , P. R. China
| | - Zengli Gao
- School of Materials Science and Engineering , Shandong University of Technology , Zibo , Shandong 255049 , P. R. China
| | - Weiwei Wang
- School of Materials Science and Engineering , Shandong University of Technology , Zibo , Shandong 255049 , P. R. China
| | - Jiarui Wang
- School of Materials Science and Engineering , Shandong University of Technology , Zibo , Shandong 255049 , P. R. China
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33
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CO2/N2-switchable high internal phase Pickering emulsion stabilized by silica nanoparticles and low-cost commercial N,N-dimethyl-N-dodecylamine. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2018.11.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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34
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Su J, Wang S, Xu Z, Wu G, Wang L, Huang X. Interfacial self-assembly of gold nanoparticle-polymer nanoconjugates into microcapsules with near-infrared light modulated biphasic catalysis efficiency. Chem Commun (Camb) 2019; 55:10760-10763. [DOI: 10.1039/c9cc05326c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Gold nanoparticle-based microcapsules based on the interfacial assembly significantly enhanced the biphasic catalytic reaction rate upon near-infrared light irradiation.
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Affiliation(s)
- Jiaojiao Su
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage
- School of Chemistry and Chemical Engineering
- Harbin Institute of Technology
- Harbin
- P. R. China
| | - Shengliang Wang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage
- School of Chemistry and Chemical Engineering
- Harbin Institute of Technology
- Harbin
- P. R. China
| | - Zhijun Xu
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage
- School of Chemistry and Chemical Engineering
- Harbin Institute of Technology
- Harbin
- P. R. China
| | - Guangyu Wu
- College of Biology and the Environment
- Nanjing Forestry University
- Nanjing 210037
- P. R. China
| | - Lei Wang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage
- School of Chemistry and Chemical Engineering
- Harbin Institute of Technology
- Harbin
- P. R. China
| | - Xin Huang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage
- School of Chemistry and Chemical Engineering
- Harbin Institute of Technology
- Harbin
- P. R. China
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35
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Shi Y, Xiong D, Chen Y, Wang H, Wang J. CO2-responsive Pickering emulsions stabilized by in-situ generated ionic liquids and silica nanoparticles. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.10.096] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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36
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37
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Yan X, Zhai Z, Xu J, Song Z, Shang S, Rao X. CO 2-Responsive Pickering Emulsions Stabilized by a Bio-based Rigid Surfactant with Nanosilica. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:10769-10776. [PMID: 30256645 DOI: 10.1021/acs.jafc.8b03458] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A novel CO2-responsive surfactant, maleopimaric acid glycidyl methacrylate ester 3-(dimethylamino)propylamine imide (MPAGN), based on sustainable resource of rosin was synthesized and used to prepare a kind of CO2-responsive Pickering emulsions with nanosilica. MPAGN can be reversibly responsive to CO2 and N2 between active cationic (MPAGNH+) and inactive nonionic (MPAGN), leading to adsorb on or desorb from the surface of nanosilica, then stabilize or break emulsion. CO2-responsive behavior of MPAGN was verified by cycle change of pH and conductivity with bubbling CO2 and N2 alternately. The type of adsorption of MPAGNH+ at the particle-water interface was explained according to the adsorption isotherms. The mechanisms of stabilization, destabilization, and restabilization of Pickering emulsion were analyzed according to zeta potentials and droplet size. This Pickering emulsion can be reversible between stable and unstable by bubbling CO2 and N2 alternately. Moreover, this emulsifier can be recycled when new oil was added after removing the initial oil. Therefore, it not only has economic benefits but also has an environmentally friendly property.
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Affiliation(s)
- Xinyan Yan
- Institute of Chemical Industry of Forest Products , CAF, National Engineering Lab. for Biomass Chemical Utilization; Key and Open Lab. of Forest Chemical Engineering, SFA; Key Lab. of Biomass Energy and Material . No. 16 Suojinbei Road , Xuanwu District, Nanjing , Jiangsu Province 210000 , China
| | - Zhaolan Zhai
- Institute of Chemical Industry of Forest Products , CAF, National Engineering Lab. for Biomass Chemical Utilization; Key and Open Lab. of Forest Chemical Engineering, SFA; Key Lab. of Biomass Energy and Material . No. 16 Suojinbei Road , Xuanwu District, Nanjing , Jiangsu Province 210000 , China
| | - Ji Xu
- Institute of Chemical Industry of Forest Products , CAF, National Engineering Lab. for Biomass Chemical Utilization; Key and Open Lab. of Forest Chemical Engineering, SFA; Key Lab. of Biomass Energy and Material . No. 16 Suojinbei Road , Xuanwu District, Nanjing , Jiangsu Province 210000 , China
| | - Zhanqian Song
- Institute of Chemical Industry of Forest Products , CAF, National Engineering Lab. for Biomass Chemical Utilization; Key and Open Lab. of Forest Chemical Engineering, SFA; Key Lab. of Biomass Energy and Material . No. 16 Suojinbei Road , Xuanwu District, Nanjing , Jiangsu Province 210000 , China
| | - Shibin Shang
- Institute of Chemical Industry of Forest Products , CAF, National Engineering Lab. for Biomass Chemical Utilization; Key and Open Lab. of Forest Chemical Engineering, SFA; Key Lab. of Biomass Energy and Material . No. 16 Suojinbei Road , Xuanwu District, Nanjing , Jiangsu Province 210000 , China
- Research Institute of Forestry New Technology , CAF , No. 1 Xiangshan Road , Haidian District, Beijing , 100091 , China
| | - Xiaoping Rao
- Institute of Chemical Industry of Forest Products , CAF, National Engineering Lab. for Biomass Chemical Utilization; Key and Open Lab. of Forest Chemical Engineering, SFA; Key Lab. of Biomass Energy and Material . No. 16 Suojinbei Road , Xuanwu District, Nanjing , Jiangsu Province 210000 , China
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources , Nanjing Forestry University . No. 159 Longpan Road , Xuanwu District, Nanjing , Jiangsu Province 210000 , China
- Research Institute of Forestry New Technology , CAF , No. 1 Xiangshan Road , Haidian District, Beijing , 100091 , China
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38
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CO2-switchable dispersion of a natural chitosan and its application as a responsive pickering emulsifier. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.06.068] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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39
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Ren G, Wang M, Wang L, Wang Z, Chen Q, Xu Z, Sun D. Dynamic Covalent Silica Nanoparticles for pH-Switchable Pickering Emulsions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:5798-5806. [PMID: 29709197 DOI: 10.1021/acs.langmuir.8b00757] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Dynamic covalent surfactants have been recently reported for preparation of pH-switchable emulsions [ Sun , D. Langmuir , 2017 , 33 , 3040 ]. In this study, dynamic covalent silica (SiO2-B) nanoparticles of switchable wettability were fabricated by a pH-responsive dynamic (covalent) imine bond between hydrophilic amino silica (SiO2-NH2) nanoparticles and hydrophobic benzaldehyde molecules. The properties of SiO2-B were characterized by Fourier transform infrared spectroscopy, elemental analysis, contact angle measurement, and ζ potential measurement. The hydrophilicity and hydrophobicity of SiO2-B were shown to be readily switchable by adjusting pH between 7.8 and 3.5. At pH 7.8, SiO2-B was partially hydrophobic and adsorbed at oil-water interface to stabilize O/W Pickering emulsions, which were characterized by electrical conductivity, optical microscopy, and confocal laser scanning microscopy. Upon lowering the pH to 3.5, the dynamic covalent bond is dissociated to convert partially hydrophobic SiO2-B into highly hydrophilic SiO2-NH2 and surface-inactive benzaldehyde. Both of them desorb from oil-water interface, resulting in a rapid oil-water separation of the Pickering emulsions. Alternating stabilization and phase separation of the Pickering emulsions over 3 cycles were demonstrated by adjusting the pH. The pH-switchable Pickering emulsions show great potential in application to effective oil-water separation of emulsions.
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Affiliation(s)
- Gaihuan Ren
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education , Shandong University , Jinan , Shandong 250100 , P. R. China
| | - MaoXin Wang
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education , Shandong University , Jinan , Shandong 250100 , P. R. China
| | - Lei Wang
- College of Chemistry and Molecular Engineering , Qingdao University of Science & Technology , Qingdao 266042 , P. R. China
| | - Zengzi Wang
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education , Shandong University , Jinan , Shandong 250100 , P. R. China
| | - Qianqian Chen
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education , Shandong University , Jinan , Shandong 250100 , P. R. China
| | - Zhenghe Xu
- Department of Chemical and Materials Engineering , University of Alberta , Edmonton , Alberta , Canada T6G 2V4
- Institute of Nuclear and New Energy Technology , Tsinghua University , Beijing 1000084 , P. R. China
| | - Dejun Sun
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education , Shandong University , Jinan , Shandong 250100 , P. R. China
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40
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Chen Y, Li Z, Wang H, Pei Y, Shi Y, Wang J. Visible Light-Controlled Inversion of Pickering Emulsions Stabilized by Functional Silica Microspheres. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:2784-2790. [PMID: 29382203 DOI: 10.1021/acs.langmuir.7b03822] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A new class of donor-acceptor Stenhouse adduct (DASA)-functionalized silica microspheres (SMs) is designed and described to formulate Pickering emulsions with inversion property and large polarity change upon visible light irradiation. By tuning the hydrophilicity of the functional SM particles with visible light, these Pickering emulsions can easily perform inversion from water-in-oil to oil-in-water. The inversion performance of the emulsions is ascribed to DASA photoisomerization from an extended, hydrophobic, and intensely purple-colored triene to a compact, zwitterionic, and colorless cyclopentenone upon irradiation with visible light. This unique inversion behavior has been applied to control encapsulation and the release of fluorescein sodium salt.
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Affiliation(s)
- Yongkui Chen
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Normal University , Xinxiang, Henan 453007, P. R. China
- School of Chemistry and Chemical Engineering, Xinxiang University , Xinxiang, Henan 453003, P. R. China
| | - Zhiyong Li
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Normal University , Xinxiang, Henan 453007, P. R. China
| | - Huiyong Wang
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Normal University , Xinxiang, Henan 453007, P. R. China
| | - Yuanchao Pei
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Normal University , Xinxiang, Henan 453007, P. R. China
| | - Yunlei Shi
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Normal University , Xinxiang, Henan 453007, P. R. China
| | - Jianji Wang
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Normal University , Xinxiang, Henan 453007, P. R. China
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41
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Xiao Z, Cao H, Jiang X, Kong XZ. Pickering Emulsion Formation of Paraffin Wax in an Ethanol-Water Mixture Stabilized by Primary Polymer Particles and Wax Microspheres Thereof. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:2282-2289. [PMID: 29338250 DOI: 10.1021/acs.langmuir.7b03802] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Stable dispersions of paraffin wax droplets and their nano- and microspheres have broad applications. Despite intensive efforts, the production of uniform wax spheres remains a challenge. For their preparation, abundant surfactants and other additives are commonly used to stabilize the dispersions. These additives are hardly removable and entrain often adverse consequence in many applications, particularly in biological and medical applications, where microspheres with absolutely clean surface are preferred. We report here a novel process to prepare stable dispersion of wax droplets in a water-ethanol mixture with a narrow size distribution by simply shaking without any surfactants. The process is featured by using primary polymer particles (PPs) of poly(dodecene-trihydroxymethylpropane triacrylate) as a Pickering stabilizer. PPs were prepared by precipitation polymerization without any surfactant and stabilizer. By rapidly cooling the wax emulsion, solid wax spheres with good uniformity were obtained. Their size, between 50 and 480 μm, was easily adjustable by changing the shaking rate, number of PPs, and particularly the size of PPs. The morphology of the wax spheres was examined by SEM, which showed that they were covered by a layer of PPs. The formation mechanism of the microspheres was also discussed on the basis of the adsorption energy of PPs on wax spheres, estimated from the corresponding contact angle of the solvent toward the PPs and the wax. This paper presents a novel pathway for the preparation of wax microspheres with only polymer particles without the need for any other additives.
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Affiliation(s)
- Zuoxu Xiao
- College of Chemistry and Chemical Engineering, University of Jinan , Jinan 250022, China
| | - Hongyan Cao
- College of Chemistry and Chemical Engineering, University of Jinan , Jinan 250022, China
| | - Xubao Jiang
- College of Chemistry and Chemical Engineering, University of Jinan , Jinan 250022, China
| | - Xiang Zheng Kong
- College of Chemistry and Chemical Engineering, University of Jinan , Jinan 250022, China
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Zhang Y, Guo S, Ren X, Liu X, Fang Y. CO 2 and Redox Dual Responsive Pickering Emulsion. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:12973-12981. [PMID: 29072075 DOI: 10.1021/acs.langmuir.7b02976] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Herein, we described for the first time a CO2 and redox dual responsive paraffin oil-in-water Pickering emulsion stabilized by the modified silica nanoparticles with Se-containing tertiary amine, SeTA, in which the tertiary amine serves as a CO2-sensitive group, and the Se atom serves as a redox-sensitive center. The Pickering emulsion can be reversibly switched between stable and unstable states by bubbling CO2 and N2 in the reduced state, or with the addition of H2O2 and Na2SO3 in the absence of CO2, because of the adsorption and desorption of SeTA on the silica surface. The former is mainly attributed to a CO2-controllable electrostatic attraction, resulting from the transition of molecules between cationic and nonionic states; whereas, the latter is ascribed to a redox-tunable hydrogen bonding, originating from the transition of molecules between selenide and selenoxide. However, in the presence of CO2, redox can only induce a change in the droplet size, not demulsification. These interesting and unique multiresponsive behaviors endow the Pickering emulsion with a capacity for intelligent control of emulsification and demulsification, as well as the droplet size, which may be an asset for a myriad of technological applications in biomedicine, microfluidics, drug delivery, and cosmetics.
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Affiliation(s)
- Yongmin Zhang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical & Materials Engineering, Jiangnan University , Wuxi 214122, P. R. China
| | - Shuang Guo
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical & Materials Engineering, Jiangnan University , Wuxi 214122, P. R. China
| | - Xiaofei Ren
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical & Materials Engineering, Jiangnan University , Wuxi 214122, P. R. China
| | - Xuefeng Liu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical & Materials Engineering, Jiangnan University , Wuxi 214122, P. R. China
| | - Yun Fang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical & Materials Engineering, Jiangnan University , Wuxi 214122, P. R. China
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Nie M, Li X, Guo H, Lei B, Sun H, Han X, Liu H. CO2-triggered switchable Pickering emulsion stabilized by guanidine-functionalized silica particles. J DISPER SCI TECHNOL 2017. [DOI: 10.1080/01932691.2017.1375415] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Min Nie
- Key Laboratory for Advanced Materials and School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, P. R. China
| | - Xixi Li
- Key Laboratory for Advanced Materials and School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, P. R. China
| | - Hao Guo
- Key Laboratory for Advanced Materials and School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, P. R. China
| | - Bin Lei
- Key Laboratory for Advanced Materials and School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, P. R. China
| | - Hui Sun
- Key Laboratory for Advanced Materials and School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, P. R. China
| | - Xia Han
- Key Laboratory for Advanced Materials and School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, P. R. China
| | - Honglai Liu
- Key Laboratory for Advanced Materials and School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, P. R. China
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