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Acevedo Cortez JS, Kharisov BI, Serrano T, González LT, Kharissova OV. Hydrophobization and evaluation of absorption capacity of Aloe vera, Opuntia ficus-indica and Gelidium for oil spill cleanup. J DISPER SCI TECHNOL 2018. [DOI: 10.1080/01932691.2018.1488593] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
| | - Boris I. Kharisov
- Chemistry, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, México
| | - Thelma Serrano
- Chemistry, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, México
| | - Lucy T. González
- Chemistry, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, México
| | - Oxana V. Kharissova
- Chemistry, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, México
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52
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Karki HP, Kafle L, Ojha DP, Song JH, Kim HJ. Three-dimensional nanoporous polyacrylonitrile-based carbon scaffold for effective separation of oil from oil/water emulsion. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.08.069] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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53
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54
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González-Rivera J, Iglio R, Barillaro G, Duce C, Tinè MR. Structural and Thermoanalytical Characterization of 3D Porous PDMS Foam Materials: The Effect of Impurities Derived from a Sugar Templating Process. Polymers (Basel) 2018; 10:polym10060616. [PMID: 30966650 PMCID: PMC6404115 DOI: 10.3390/polym10060616] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 05/31/2018] [Accepted: 06/01/2018] [Indexed: 11/16/2022] Open
Abstract
Polydimethylsiloxane (PDMS) polymers are extensively used in a wide range of research and industrial fields, due to their highly versatile chemical, physical, and biological properties. Besides the different two-dimensional PDMS formulations available, three-dimensional PDMS foams have attracted increased attention. However, as-prepared PDMS foams contain residual unreacted low molecular weight species that need to be removed in order to obtain a standard and chemically stable material for use as a scaffold for different decorating agents. We propose a cleaning procedure for PDMS foams obtained using a sugar templating process, based on the use of two different solvents (hexane and ethanol) as cleaning agents. Thermogravimetry coupled with Fourier Transform Infrared Spectroscopy (TG-FTIR) for the analysis of the evolved gasses was used to characterize the thermal stability and decomposition pathway of the PDMS foams, before and after the cleaning procedure. The results were compared with those obtained on non-porous PDMS bulk as a reference. Micro-CT microtomography and scanning electron microscopy (SEM) analyses were employed to study the morphology of the PDMS foam. The thermogravimetric analysis (TGA) revealed a different thermal behaviour and crosslinking pathway between bulk PDMS and porous PDMS foam, which was also influenced by the washing process. This information was not apparent from spectroscopic or morphological studies and it would be very useful for planning the use of such complex and very reactive systems.
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Affiliation(s)
- José González-Rivera
- Department of Information Engineering, University of Pisa, via G. Caruso 16, 56122 Pisa, Italy.
| | - Rossella Iglio
- Department of Information Engineering, University of Pisa, via G. Caruso 16, 56122 Pisa, Italy.
| | - Giuseppe Barillaro
- Department of Information Engineering, University of Pisa, via G. Caruso 16, 56122 Pisa, Italy.
| | - Celia Duce
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via Moruzzi 3, 56124 Pisa, Italy.
| | - Maria Rosaria Tinè
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via Moruzzi 3, 56124 Pisa, Italy.
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55
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Peng J, Deng J, Quan Y, Yu C, Wang H, Gong Y, Liu Y, Deng W. Superhydrophobic Melamine Sponge Coated with Striped Polydimethylsiloxane by Thiol-Ene Click Reaction for Efficient Oil/Water Separation. ACS OMEGA 2018; 3:5222-5228. [PMID: 31458735 PMCID: PMC6641746 DOI: 10.1021/acsomega.8b00373] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 04/25/2018] [Indexed: 05/30/2023]
Abstract
Superhydrophobic and oleophilic sponges have been demonstrated as promising candidates for oil/water separation. However, there are still challenges in large-scale fabrication of superhydrophobic sponges with low cost and feasible method for industrial applications. Herein, we report a superhydrophobic and oleophilic melamine sponge functionalized by a uniform polydimethylsiloxane (PDMS) film that can be easily coated onto the sponge skeleton through UV-assisted thiol-ene click reactions. The PDMS films are characterized by a hierarchically striped microstructure with an average distance less than 2 μm. Because of the striped microstructure and the hydrophobic property of silicone, a high contact angle of 156.2° was achieved. Importantly, the interconnected open-cell structure of the melamine sponge was preserved by adapting the thickness of the PDMS film. The PDMS-coated melamine sponge exhibited a desirable absorption capacity of 103-179 times its own weight with oils and organic solvents. The excellent mechanical properties of melamine and the flexibility of PDMS enable the PDMS-coated melamine sponges to be squeezed repeatedly without collapsing. This study offers a robust and effective approach in large-scale preparation of a superhydrophobic sponge for large-scale oil spill containment and environmental remediation by the inexpensive commercial polymethylvinylsilicone and facile dip-coating/UV-curing method.
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56
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Zhang Q, Zhang F, Xu X, Zhou C, Lin D. Three-Dimensional Printing Hollow Polymer Template-Mediated Graphene Lattices with Tailorable Architectures and Multifunctional Properties. ACS NANO 2018; 12:1096-1106. [PMID: 29328672 DOI: 10.1021/acsnano.7b06095] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
It is a significant challenge to concurrently achieve scalable fabrication of graphene aerogels with three-dimensional (3D) tailorable architectures (e.g., lattice structure) and controllable manipulation of microstructures on the multiscale. Herein, we highlight 3D graphene lattices (GLs) with complex engineering architectures that were delicately designed and manufactured via 3D stereolithography printed hollow polymer template-mediated hydrothermal process coupled with freeze-drying strategies. The resulting GLs with overhang beams and columns show a 3D geometric configuration with hollow-carved features at the macroscale, while the construction elements of graphene cellular on the microscale exhibit a well-ordered and honeycomb-like microstructure with high porosity. These GLs demonstrate multifunctional properties with robust structure, high electrical conductivity, low thermal conductivity, and superior absorption capacitance of organic solvents. Moreover, the GLs were utilized as a subtle sensor for the fast detection of chemical agents. Aforementioned superior properties of GLs confirm that the combination of 3D tailorable manipulation and self-organization design of structures on the multiscale is an effective strategy for the scalable fabrication of advanced multifunctional graphene monoliths, suggesting their promising applications as chemical detection sensors, environmental remediation absorbers, conductive electrodes, and engineering metamaterials.
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Affiliation(s)
- Qiangqiang Zhang
- College of Civil Engineering and Mechanics, Lanzhou University , Lanzhou 730000, P. R. China
- Key Laboratory of Mechanics on Disaster and Environment in Western China and the Ministry of Education of China, Lanzhou University , Lanzhou 730000, P. R. China
| | - Feng Zhang
- Department of Industrial and Systems Engineering, University at Buffalo, the State University of New York , Buffalo, New York 14260, United States
| | - Xiang Xu
- Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology , Harbin 150090, P. R. China
- Center of Structural Health Monitoring and Control, School of Civil Engineering, Harbin Institute of Technology , Harbin 150090, P. R. China
| | - Chi Zhou
- Department of Industrial and Systems Engineering, University at Buffalo, the State University of New York , Buffalo, New York 14260, United States
| | - Dong Lin
- Department of Industrial and Manufacturing Systems Engineering, Kansas State University , Manhattan, Kansas 66506, United States
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57
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Du W, Dai G, Wang B, Li Z, Li L. Biodegradable porous organosilicone-modified collagen fiber matrix: Synthesis and high oil absorbency. J Appl Polym Sci 2018. [DOI: 10.1002/app.46264] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Weining Du
- National Engineering Laboratory for Clean Technology of Leather Manufacture; Sichuan University; Chengdu 610065 China
- Key Laboratory of Leather Chemistry and Engineering of Ministry of Education; Sichuan University; Chengdu 610065 China
| | - Guochen Dai
- National Engineering Laboratory for Clean Technology of Leather Manufacture; Sichuan University; Chengdu 610065 China
- Key Laboratory of Leather Chemistry and Engineering of Ministry of Education; Sichuan University; Chengdu 610065 China
| | - Baochuan Wang
- National Engineering Laboratory for Clean Technology of Leather Manufacture; Sichuan University; Chengdu 610065 China
- Key Laboratory of Leather Chemistry and Engineering of Ministry of Education; Sichuan University; Chengdu 610065 China
| | - Zhengjun Li
- National Engineering Laboratory for Clean Technology of Leather Manufacture; Sichuan University; Chengdu 610065 China
- Key Laboratory of Leather Chemistry and Engineering of Ministry of Education; Sichuan University; Chengdu 610065 China
| | - Lixin Li
- College of Chemistry; Sichuan University; Chengdu 610065 China
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58
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Calotropis gigantea fiber derived carbon fiber enables fast and efficient absorption of oils and organic solvents. Sep Purif Technol 2018. [DOI: 10.1016/j.seppur.2017.10.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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59
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Sunaga S, Kokado K, Sada K. Lipophilic polyelectrolyte gel derived from phosphonium borate can absorb a wide range of organic solvents. SOFT MATTER 2018; 14:581-585. [PMID: 29261210 DOI: 10.1039/c7sm01841j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Herein, we demonstrate a polyelectrolyte gel which can absorb a wide range of organic solvents from dimethylsulfoxide (DMSO, permittivity: ε = 47.0) to tetrahydrofuran (ε = 5.6). The gel consists of polystyrene chains with small amounts (∼5 mol%) of lipophilic electrolytes derived from triphenylphosphonium tetraaryl borate. The swelling ability of the polyelectrolyte gel was higher than that of the alkyl ammonium tetraaryl borate previously reported by us, and this is attributed to the higher compatibility with organic solvents, as well as the higher dissociating ability, of the triphenyl phosphonium salt. The role of the ionic moieties was additionally confirmed by post modification of the polyelectrolyte gel via a conventional Wittig reaction, resulting in a nonionic gel. Our findings introduced here will lead to a clear-cut molecular design for polyelectrolyte gels which absorb all solvents.
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Affiliation(s)
- Sokuro Sunaga
- Graduate School of Chemical Sciences and Engineering, and Faculty of Science, Hokkaido, Japan.
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60
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Xiong S, Yang Y, Zhong Z, Wang Y. One-Step Synthesis of Carbon-Hybridized ZnO on Polymeric Foams by Atomic Layer Deposition for Efficient Absorption of Oils from Water. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.7b03939] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sen Xiong
- State Key Laboratory of Materials-Oriented
Chemical Engineering, Jiangsu National Synergetic Innovation Center
for Advanced Materials, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, People’s Republic of China
| | - Yang Yang
- State Key Laboratory of Materials-Oriented
Chemical Engineering, Jiangsu National Synergetic Innovation Center
for Advanced Materials, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, People’s Republic of China
| | - Zhaoxiang Zhong
- State Key Laboratory of Materials-Oriented
Chemical Engineering, Jiangsu National Synergetic Innovation Center
for Advanced Materials, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, People’s Republic of China
| | - Yong Wang
- State Key Laboratory of Materials-Oriented
Chemical Engineering, Jiangsu National Synergetic Innovation Center
for Advanced Materials, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, People’s Republic of China
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61
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Pinto J, Athanassiou A, Fragouli D. Surface modification of polymeric foams for oil spills remediation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2018; 206:872-889. [PMID: 29202435 DOI: 10.1016/j.jenvman.2017.11.060] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 11/15/2017] [Accepted: 11/22/2017] [Indexed: 06/07/2023]
Abstract
In the last decade, a continuous increasing research activity is focused on the surface functionalization of polymeric porous materials for the efficient removal of oil contaminants from water. This work reviews the most significant recent studies on the functionalization of polyurethane and melamine foams, materials commonly reported for oil-water separation applications. After the identification of the key features of the foams required to optimize their oil removal performance, a wide variety of physicochemical treatments are described together with their effect on the oil absorption selectivity and oil absorption capacity, both critical parameters for the application of the foams in the remediation of oil spills. The efficiencies of the different functionalization processes on the same type of foams are compared, determining the main advantages and potentialities of each treatment and remediation procedure.
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Affiliation(s)
- Javier Pinto
- Smart Materials, Istituto Italiano di Tecnologia (IIT), Via Morego 30, 16163 Genova, Italy.
| | - Athanassia Athanassiou
- Smart Materials, Istituto Italiano di Tecnologia (IIT), Via Morego 30, 16163 Genova, Italy
| | - Despina Fragouli
- Smart Materials, Istituto Italiano di Tecnologia (IIT), Via Morego 30, 16163 Genova, Italy.
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62
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Sun J, Gong L, Lu Y, Wang D, Gong Z, Fan M. Dual functional PDMS sponge SERS substrate for the on-site detection of pesticides both on fruit surfaces and in juice. Analyst 2018; 143:2689-2695. [DOI: 10.1039/c8an00476e] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A versatile dual-functional polydimethylsiloxane (PDMS) sponge Surface Enhanced Raman Scattering (SERS) substrate has been fabricated for the on-site detection of pesticide residues both on the surface and in solution with minimum or no sample pretreatment.
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Affiliation(s)
- Ji Sun
- Faculty of Geosciences and Environmental Engineering
- Southwest Jiaotong University
- Chengdu
- China
| | - Lin Gong
- Faculty of Geosciences and Environmental Engineering
- Southwest Jiaotong University
- Chengdu
- China
| | - Yuntao Lu
- Faculty of Geosciences and Environmental Engineering
- Southwest Jiaotong University
- Chengdu
- China
| | - Dongmei Wang
- Faculty of Geosciences and Environmental Engineering
- Southwest Jiaotong University
- Chengdu
- China
| | - Zhengjun Gong
- Faculty of Geosciences and Environmental Engineering
- Southwest Jiaotong University
- Chengdu
- China
| | - Meikun Fan
- Faculty of Geosciences and Environmental Engineering
- Southwest Jiaotong University
- Chengdu
- China
- State-province Joint Engineering Laboratory of Spatial Information Technology of High-Speed Rail Safety
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63
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Hao J, Fan Z, Xiao C, Zhao J, Liu H, Chen L. Effect of stretching on continuous oil/water separation performance of polypropylene hollow fiber membrane. IRANIAN POLYMER JOURNAL 2017. [DOI: 10.1007/s13726-017-0566-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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64
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Chatterjee S, Doshi P, Kumaraswamy G. Capillary uptake in macroporous compressible sponges. SOFT MATTER 2017; 13:5731-5740. [PMID: 28758659 DOI: 10.1039/c7sm00826k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The capillarity-driven uptake of liquid in swellable, highly porous sponges is of significant industrial importance. Sponges prepared using polymers and their composites with carbon nanotubes and graphene have been reported, with extraordinary solvent uptake capacities and with the ability to separate oil from water. However, the effect of systematic variation of sponge characteristics on solvent uptake has not been investigated. Here, we report experiments that study capillary uptake in a variety of flexible, centimetre-sized macroporous cylindrical sponges. We used ice-templating to prepare a series of model macroporous sponges in which the porosity, modulus and composition were systematically varied. We investigated two kinds of sponge: (a) those composed purely of cross-linked polymers and (b) those prepared as composites of inorganic particles and polymers. Both kinds of sponge are flexible and exhibit elastic recovery after large compressive deformation. All sponges were characterized thoroughly with respect to their pore microstructure and elastic modulus. When one end of a sponge is plunged into a large reservoir, water rises through capillary action against gravity. We observed a transition from an inertial capillary regime, where the liquid column height rose linearly with time, t, to a viscous capillary regime, where the liquid height rose with time t0.5. We showed that these results can be rationalized using analyses developed for rigid sponges. We combined differential momentum balance equations for uptake in rigid capillaries with the phenomenological Ergun-Forchheimer relations to account for the effect of the sponge microstructure. This approach works remarkably well in the viscous capillary regime and shows that capillary uptake is governed primarily by the total porosity and pore dimensions of soft sponges.
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Affiliation(s)
- Soumyajyoti Chatterjee
- J-101, Polymers and Advanced Materials Laboratory, Complex Fluids and Polymer Engineering, Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Pune-411008, Maharashtra, India.
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65
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A robust superhydrophobic TiO 2 NPs coated cellulose sponge for highly efficient oil-water separation. Sci Rep 2017; 7:9428. [PMID: 28842635 PMCID: PMC5572709 DOI: 10.1038/s41598-017-09912-9] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Accepted: 08/01/2017] [Indexed: 12/23/2022] Open
Abstract
Oil-water separation has recently become a worldwide concern because of the increasing oil spill accidents and industrial oily wastewater generation. Herein, a facile method with the combined superhydrophobic coating and adhesive was used to fabricate superhydrophobic TiO2 NPs coated cellulose sponge. The developed materials exhibited excellent superhydrophobicity (WCA = 171°) and superoleophilicity (OCA = 0°), which can separate a variety of oil-water mixtures, including chloroform, toluene, kerosene and other contaminations. A high separation efficiency up to 98.5% for chloroform-water mixture was achieved when used for gravity-driven oil/water separation test. More importantly, the as-prepared samples exhibited excellent chemical stability and mechanical abrasion resistance even towards various corrosive oil/water mixtures (such as strong acid, alkali solution and salt-water environment) or a strong abrasion by aluminium oxide sandpaper of 600 mesh. In addition, the separation efficiency remained above 93% even after 40 scratch cycles, and the materials could be reused with a stable hydrophobicity, indicating a strong potential for industrial application.
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66
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Li L, Zhang J, Wang A. Removal of Organic Pollutants from Water Using Superwetting Materials. CHEM REC 2017; 18:118-136. [DOI: 10.1002/tcr.201700029] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Indexed: 11/07/2022]
Affiliation(s)
- Lingxiao Li
- Key Laboratory of Clay Mineral Applied Research of Gansu Province, Lanzhou Institute of Chemical Physics; Chinese Academy of Sciences; Tianshui Middle Road 18 Lanzhou 730000 P. R. China
- University of Chinese Academy of Sciences; Beijing 100049 P. R. China
| | - Junping Zhang
- Key Laboratory of Clay Mineral Applied Research of Gansu Province, Lanzhou Institute of Chemical Physics; Chinese Academy of Sciences; Tianshui Middle Road 18 Lanzhou 730000 P. R. China
| | - Aiqin Wang
- Key Laboratory of Clay Mineral Applied Research of Gansu Province, Lanzhou Institute of Chemical Physics; Chinese Academy of Sciences; Tianshui Middle Road 18 Lanzhou 730000 P. R. China
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67
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Thurgood P, Baratchi S, Szydzik C, Mitchell A, Khoshmanesh K. Porous PDMS structures for the storage and release of aqueous solutions into fluidic environments. LAB ON A CHIP 2017; 17:2517-2527. [PMID: 28653722 DOI: 10.1039/c7lc00350a] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Typical microfluidic systems take advantage of multiple storage reservoirs, pumps and valves for the storage, driving and release of buffers and other reagents. However, the fabrication, integration, and operation of such components can be difficult. In particular, the reliance of such components on external off-chip equipment limits their utility for creating self-sufficient, stand-alone microfluidic systems. Here, we demonstrate a porous sponge made of polydimethylsiloxane (PDMS), which is fabricated by templating microscale water droplets using a T-junction microfluidic structure. High-resolution microscopy reveals that this sponge contains a network of pores, interconnected by small holes. This unique structure enables the sponge to passively release stored solutions very slowly. Proof-of-concept experiments demonstrate that the sponge can be used for the passive release of stored solutions into narrow channels and circular well plates, with the latter used for inducing intracellular calcium signalling of immobilised endothelial cells. The release rate of stored solutions can be controlled by varying the size of interconnecting holes, which can be easily achieved by changing the flow rate of the water injected into the T-junction. We also demonstrate the active release of stored liquids into a fluidic channel upon the manual compression of the sponge. The developed PDMS sponge can be easily integrated into complex micro/macro fluidic systems and prepared with a wide array of reagents, representing a new building block for self-sufficient microfluidic systems.
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Affiliation(s)
- Peter Thurgood
- School of Engineering, RMIT University, Melbourne, Victoria, Australia.
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68
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Wu S, Zhang J, Ladani RB, Ravindran AR, Mouritz AP, Kinloch AJ, Wang CH. Novel Electrically Conductive Porous PDMS/Carbon Nanofiber Composites for Deformable Strain Sensors and Conductors. ACS APPLIED MATERIALS & INTERFACES 2017; 9:14207-14215. [PMID: 28398032 DOI: 10.1021/acsami.7b00847] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Highly flexible and deformable electrically conductive materials are vital for the emerging field of wearable electronics. To address the challenge of flexible materials with a relatively high electrical conductivity and a high elastic limit, we report a new and facile method to prepare porous polydimethylsiloxane/carbon nanofiber composites (denoted by p-PDMS/CNF). This method involves using sugar particles coated with carbon nanofibers (CNFs) as the templates. The resulting three-dimensional porous nanocomposites, with the CNFs embedded in the PDMS pore walls, exhibit a greatly increased failure strain (up to ∼94%) compared to that of the solid, neat PDMS (∼48%). The piezoresistive response observed under cyclic tension indicates that the unique microstructure provides the new nanocomposites with excellent durability. The electrical conductivity and the gauge factor of this new nanocomposite can be tuned by changing the content of the CNFs. The electrical conductivity increases, while the gauge factor decreases, upon increasing the content of CNFs. The gauge factor of the newly developed sensors can be adjusted from approximately 1.0 to 6.5, and the nanocomposites show stable piezoresistive performance with fast response time and good linearity in ln(R/R0) versus ln(L/L0) up to ∼70% strain. The tunable sensitivity and conductivity endow these highly stretchable nanocomposites with considerable potential for use as flexible strain sensors for monitoring the movement of human joints (where a relatively high gauge factor is needed) and also as flexible conductors for wearable electronics (where a relatively low gauge factor is required).
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Affiliation(s)
- Shuying Wu
- Sir Lawrence Wackett Aerospace Research Centre, School of Engineering, RMIT University , GPO Box 2476, Melbourne, VIC 3001, Australia
- School of Mechanical and Manufacturing Engineering, University of New South Wales , Sydney, NSW 2052, Australia
| | - Jin Zhang
- Australian Future Fibers Research and Innovation Centre, Institute for Frontier Materials, Deakin University , Burwood, VIC 3220, Australia
| | - Raj B Ladani
- Sir Lawrence Wackett Aerospace Research Centre, School of Engineering, RMIT University , GPO Box 2476, Melbourne, VIC 3001, Australia
| | - Anil R Ravindran
- Sir Lawrence Wackett Aerospace Research Centre, School of Engineering, RMIT University , GPO Box 2476, Melbourne, VIC 3001, Australia
| | - Adrian P Mouritz
- Sir Lawrence Wackett Aerospace Research Centre, School of Engineering, RMIT University , GPO Box 2476, Melbourne, VIC 3001, Australia
| | - Anthony J Kinloch
- Department of Mechanical Engineering, Imperial College London , London SW7 2BX, U.K
| | - Chun H Wang
- School of Mechanical and Manufacturing Engineering, University of New South Wales , Sydney, NSW 2052, Australia
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69
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Li Y, Zhu D, Handschuh‐Wang S, Lv G, Wang J, Li T, Chen C, He C, Zhang J, Liu Y, Yang B, Zhou X. Bioinspired, Mechano-Regulated Interfaces for Rationally Designed, Dynamically Controlled Collection of Oil Spills from Water. GLOBAL CHALLENGES (HOBOKEN, NJ) 2017; 1:1600014. [PMID: 31565266 PMCID: PMC6607165 DOI: 10.1002/gch2.201600014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Revised: 12/31/2016] [Indexed: 05/15/2023]
Abstract
This study describes the fabrication of bioinspired mechano-regulated interfaces (MRI) for the separation and collection of oil spills from water. The MRI consists of 3D-interconnected, microporous structures of sponges made of ultrasoft elastomers (Ecoflex). To validate the MRI strategy, ecoflex sponges are first fabricated with a low-cost sugar-leaching method. This study then systematically investigates the absorption capacity (up to 1280% for chloroform) of the sponges to different oils and organic solvents. More importantly, the oil flux through the as-made sponges is controlled by mechanical deformation, which increases up to ≈33-fold by tensile strain applied to the sponge from 0 to 400%. On the basis of MRI, this study further demonstrates the application of ecoflex sponges in oil skimmers for selective collecting oil from water with high efficiency and durable recyclability. The as-developed MRI strategy has opened a new path to allow rational design and dynamical control toward developing high performance devices for oil permeation and selective collection of oil spills from water.
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Affiliation(s)
- Yaoyao Li
- College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhen518060P. R. China
| | - Deyong Zhu
- College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhen518060P. R. China
| | - Stephan Handschuh‐Wang
- College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhen518060P. R. China
| | - Guanghui Lv
- College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhen518060P. R. China
| | - Jiahui Wang
- College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhen518060P. R. China
| | - Tianzhen Li
- College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhen518060P. R. China
| | - Cancheng Chen
- College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhen518060P. R. China
| | - Chuanxin He
- College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhen518060P. R. China
| | - Junmin Zhang
- College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhen518060P. R. China
| | - Yizhen Liu
- College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhen518060P. R. China
| | - Bo Yang
- College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhen518060P. R. China
| | - Xuechang Zhou
- College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhen518060P. R. China
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70
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Gu J, Xiao P, Chen P, Zhang L, Wang H, Dai L, Song L, Huang Y, Zhang J, Chen T. Functionalization of Biodegradable PLA Nonwoven Fabric as Superoleophilic and Superhydrophobic Material for Efficient Oil Absorption and Oil/Water Separation. ACS APPLIED MATERIALS & INTERFACES 2017; 9:5968-5973. [PMID: 28135056 DOI: 10.1021/acsami.6b13547] [Citation(s) in RCA: 113] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Although the construction of superwettability materials for oil/water separation has been developed rapidly, the postprocess of the used separation materials themselves is still a thorny problem due to their nondegradation in the natural environment. In this work, we reported the functionalization of polylactic acid (PLA) nonwoven fabric as superoleophilic and superhydrophobic material for efficient treatment of oily wastewater with eco-friendly post-treatment due to the well-known biodegradable nature of PLA matrix.
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Affiliation(s)
- Jincui Gu
- Ningbo Institute of Material Technology and Engineering, Key Laboratory of Marine Materials and Related Technologies, Chinese Academy of Science , Ningbo 315201, China
| | - Peng Xiao
- Ningbo Institute of Material Technology and Engineering, Key Laboratory of Marine Materials and Related Technologies, Chinese Academy of Science , Ningbo 315201, China
| | - Peng Chen
- Ningbo Institute of Material Technology and Engineering, Key Laboratory of Marine Materials and Related Technologies, Chinese Academy of Science , Ningbo 315201, China
| | - Lei Zhang
- Ningbo Institute of Material Technology and Engineering, Key Laboratory of Marine Materials and Related Technologies, Chinese Academy of Science , Ningbo 315201, China
| | - Hanlin Wang
- College of Environmental & Resource Sciences, Zhejiang University , 866 Yuhangtang Road, Hangzhou 310058, China
| | - Liwei Dai
- Ningbo Institute of Material Technology and Engineering, Key Laboratory of Marine Materials and Related Technologies, Chinese Academy of Science , Ningbo 315201, China
| | - Liping Song
- Ningbo Institute of Material Technology and Engineering, Key Laboratory of Marine Materials and Related Technologies, Chinese Academy of Science , Ningbo 315201, China
| | - Youju Huang
- Ningbo Institute of Material Technology and Engineering, Key Laboratory of Marine Materials and Related Technologies, Chinese Academy of Science , Ningbo 315201, China
| | - Jiawei Zhang
- Ningbo Institute of Material Technology and Engineering, Key Laboratory of Marine Materials and Related Technologies, Chinese Academy of Science , Ningbo 315201, China
| | - Tao Chen
- Ningbo Institute of Material Technology and Engineering, Key Laboratory of Marine Materials and Related Technologies, Chinese Academy of Science , Ningbo 315201, China
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71
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Yu L, Hao G, Xiao L, Yin Q, Xia M, Jiang W. Robust magnetic polystyrene foam for high efficiency and removal oil from water surface. Sep Purif Technol 2017. [DOI: 10.1016/j.seppur.2016.09.022] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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72
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Xiong S, Zhong Z, Wang Y. Direct silanization of polyurethane foams for efficient selective absorption of oil from water. AIChE J 2017. [DOI: 10.1002/aic.15629] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Sen Xiong
- State Key Laboratory of Materials‐Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, College of Chemical EngineeringNanjing Tech UniversityNanjing210009 P.R. China
| | - Zhaoxiang Zhong
- State Key Laboratory of Materials‐Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, College of Chemical EngineeringNanjing Tech UniversityNanjing210009 P.R. China
| | - Yong Wang
- State Key Laboratory of Materials‐Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, College of Chemical EngineeringNanjing Tech UniversityNanjing210009 P.R. China
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73
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Abstract
This review systematically summarizes the recent developments of superoleophobic surfaces, focusing on their design, fabrication, characteristics, functions, and important applications.
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Affiliation(s)
- Jiale Yong
- State Key Laboratory for Manufacturing System Engineering and Shaanxi Key Laboratory of Photonics Technology for Information
- School of Electronics & Information Engineering
- Xi’an Jiaotong University
- Xi’an
- P. R. China
| | - Feng Chen
- State Key Laboratory for Manufacturing System Engineering and Shaanxi Key Laboratory of Photonics Technology for Information
- School of Electronics & Information Engineering
- Xi’an Jiaotong University
- Xi’an
- P. R. China
| | - Qing Yang
- School of Mechanical Engineering
- Xi’an Jiaotong University
- Xi’an
- P. R. China
| | - Jinglan Huo
- State Key Laboratory for Manufacturing System Engineering and Shaanxi Key Laboratory of Photonics Technology for Information
- School of Electronics & Information Engineering
- Xi’an Jiaotong University
- Xi’an
- P. R. China
| | - Xun Hou
- State Key Laboratory for Manufacturing System Engineering and Shaanxi Key Laboratory of Photonics Technology for Information
- School of Electronics & Information Engineering
- Xi’an Jiaotong University
- Xi’an
- P. R. China
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74
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Zhang S, Guo J, Ma X, Peng X, Qiu Z, Ying J, Wang J. Smart PDMS sponge with switchable pH-responsive wetting surface for oil/water separation. NEW J CHEM 2017. [DOI: 10.1039/c7nj01067b] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A smart pH-responsive wetting sponge with controllable absorption or release of water or oil for oil spill clean-up is prepared.
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Affiliation(s)
- Sai Zhang
- Shanghai Key Laboratory of Advanced Polymeric Materials
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
| | - Jiahong Guo
- Shanghai Key Laboratory of Advanced Polymeric Materials
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
| | - Xiangyan Ma
- Shanghai Key Laboratory of Advanced Polymeric Materials
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
| | - Xing Peng
- Shanghai Key Laboratory of Advanced Polymeric Materials
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
| | - Zhoutong Qiu
- Shanghai Key Laboratory of Advanced Polymeric Materials
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
| | - Jie Ying
- Shanghai Key Laboratory of Advanced Polymeric Materials
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
| | - Jikui Wang
- Shanghai Key Laboratory of Advanced Polymeric Materials
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
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75
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Qiu S, Bi H, Hu X, Wu M, Li Y, Sun L. Moldable clay-like unit for synthesis of highly elastic polydimethylsiloxane sponge with nanofiller modification. RSC Adv 2017. [DOI: 10.1039/c6ra26701g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A clay-like unit is beneficial for the moldable synthesis of a superelastic polydimethylsiloxane sponge with nanofiller modification via an ultrasound-assisted in situ polymerization approach.
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Affiliation(s)
- Shi Qiu
- SEU-FEI Nano-Pico Center
- Key Laboratory of MEMS of Ministry of Education
- Southeast University
- Nanjing
- P. R. China
| | - Hengchang Bi
- SEU-FEI Nano-Pico Center
- Key Laboratory of MEMS of Ministry of Education
- Southeast University
- Nanjing
- P. R. China
| | - Xiaohui Hu
- SEU-FEI Nano-Pico Center
- Key Laboratory of MEMS of Ministry of Education
- Southeast University
- Nanjing
- P. R. China
| | - Mingbo Wu
- CPCIF Key Lab for Carbon Materials from Heavy Oil
- State Key Laboratory of Heavy Oil Processing
- China University of Petroleum
- Qingdao
- P. R. China
| | - Yongfeng Li
- State Key Laboratory of Heavy Oil Processing
- China University of Petroleum
- Beijing
- P. R. China
| | - Litao Sun
- SEU-FEI Nano-Pico Center
- Key Laboratory of MEMS of Ministry of Education
- Southeast University
- Nanjing
- P. R. China
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76
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Rinaldi A, Tamburrano A, Fortunato M, Sarto MS. A Flexible and Highly Sensitive Pressure Sensor Based on a PDMS Foam Coated with Graphene Nanoplatelets. SENSORS 2016; 16:s16122148. [PMID: 27999251 PMCID: PMC5191128 DOI: 10.3390/s16122148] [Citation(s) in RCA: 128] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2016] [Revised: 11/29/2016] [Accepted: 12/08/2016] [Indexed: 01/23/2023]
Abstract
The demand for high performance multifunctional wearable devices is more and more pushing towards the development of novel low-cost, soft and flexible sensors with high sensitivity. In the present work, we describe the fabrication process and the properties of new polydimethylsiloxane (PDMS) foams loaded with multilayer graphene nanoplatelets (MLGs) for application as high sensitive piezoresistive pressure sensors. The effective DC conductivity of the produced foams is measured as a function of MLG loading. The piezoresistive response of the MLG-PDMS foam-based sensor at different strain rates is assessed through quasi-static pressure tests. The results of the experimental investigations demonstrated that sensor loaded with 0.96 wt.% of MLGs is characterized by a highly repeatable pressure-dependent conductance after a few stabilization cycles and it is suitable for detecting compressive stresses as low as 10 kPa, with a sensitivity of 0.23 kPa−1, corresponding to an applied pressure of 70 kPa. Moreover, it is estimated that the sensor is able to detect pressure variations of ~1 Pa. Therefore, the new graphene-PDMS composite foam is a lightweight cost-effective material, suitable for sensing applications in the subtle or low and medium pressure ranges.
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Affiliation(s)
- Andrea Rinaldi
- Nanotechnology Research Center Applied to Engineering (CNIS), Sapienza University of Rome, 00185 Rome, Italy.
- Department of Astronautics, Electrical and Energy Engineering (DIAEE), Sapienza University of Rome, 00184 Rome, Italy.
| | - Alessio Tamburrano
- Nanotechnology Research Center Applied to Engineering (CNIS), Sapienza University of Rome, 00185 Rome, Italy.
- Department of Astronautics, Electrical and Energy Engineering (DIAEE), Sapienza University of Rome, 00184 Rome, Italy.
| | - Marco Fortunato
- Nanotechnology Research Center Applied to Engineering (CNIS), Sapienza University of Rome, 00185 Rome, Italy.
- Department of Astronautics, Electrical and Energy Engineering (DIAEE), Sapienza University of Rome, 00184 Rome, Italy.
| | - Maria Sabrina Sarto
- Nanotechnology Research Center Applied to Engineering (CNIS), Sapienza University of Rome, 00185 Rome, Italy.
- Department of Astronautics, Electrical and Energy Engineering (DIAEE), Sapienza University of Rome, 00184 Rome, Italy.
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77
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Nam C, Li H, Zhang G, Chung TCM. Petrogel: New Hydrocarbon (Oil) Absorbent Based on Polyolefin Polymers. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01244] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Changwoo Nam
- Department
of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Houxiang Li
- Department
of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Gang Zhang
- Department
of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - T. C. Mike Chung
- Department
of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
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78
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Karadag K, Yati I, Bulbul Sonmez H. Effective clean-up of organic liquid contaminants including BTEX, fuels, and organic solvents from the environment by poly(alkoxysilane) sorbents. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2016; 174:45-54. [PMID: 26999646 DOI: 10.1016/j.jenvman.2016.01.043] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Revised: 01/16/2016] [Accepted: 01/30/2016] [Indexed: 06/05/2023]
Abstract
Novel cross-linked poly(alkoxysilane)s, which can be used for the removal of organic liquid contaminants from water, were synthesized in one step, in a solvent free reaction medium, at moderately high temperature without using a catalyst. The synthesized polymers were characterized by Fourier transform infrared spectroscopy (FTIR), solid-state (13)C and (29)Si cross-polarization magic angle spinning (CPMAS) nuclear magnetic resonance (NMR), thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC) methods and elemental analysis. The swelling features of the poly(alkoxysilane)s were investigated in organic solvents and oils, such as dichloromethane, benzene, toluene, xylene, methyl tertiary butyl ether, and also some fuel derivatives, such as gasoline and euro diesel. All polymers have high-fast solvent uptake abilities, good reusability and thermal stability. The swelling features of the synthesized cross-linked polymers were evaluated by the swelling test, absorption-desorption kinetics. Thus, the results propose that cross-linked poly(alkoxysilane)s are suitable for the absorption of oil-organic pollutants from the water surface.
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Affiliation(s)
- Koksal Karadag
- Gebze Technical University, Department of Chemistry, PO. Box 141, 41400 Gebze, Kocaeli, Turkey
| | - Ilker Yati
- Gebze Technical University, Department of Chemistry, PO. Box 141, 41400 Gebze, Kocaeli, Turkey
| | - Hayal Bulbul Sonmez
- Gebze Technical University, Department of Chemistry, PO. Box 141, 41400 Gebze, Kocaeli, Turkey.
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79
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Investigation of organic solvent/oil sorption capabilities of phenylene-bridged cross-linked poly(alkoxysilane)s. JOURNAL OF POLYMER RESEARCH 2016. [DOI: 10.1007/s10965-016-0938-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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80
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Zhang H, Li Y, Xu Y, Lu Z, Chen L, Huang L, Fan M. Versatile fabrication of a superhydrophobic and ultralight cellulose-based aerogel for oil spillage clean-up. Phys Chem Chem Phys 2016; 18:28297-28306. [DOI: 10.1039/c6cp04932j] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
To deal with marine oil spillage and chemical leakage issues, a highly efficient absorbent (cellulose based aerogel) with a low density (ρ < 0.034 g cm−3, φ > 98.5%) and high mechanical strength was fabricated via a novel physical–chemical foaming method, plasma treatment and subsequent silane modification process.
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Affiliation(s)
- Hui Zhang
- College of Materials Engineering
- Fujian Agriculture and Forestry University
- Fuzhou 350002
- People's Republic of China
| | - Yuqi Li
- College of Materials Engineering
- Fujian Agriculture and Forestry University
- Fuzhou 350002
- People's Republic of China
| | - Yaoguang Xu
- College of Materials Engineering
- Fujian Agriculture and Forestry University
- Fuzhou 350002
- People's Republic of China
| | - Zexiang Lu
- College of Materials Engineering
- Fujian Agriculture and Forestry University
- Fuzhou 350002
- People's Republic of China
| | - Lihui Chen
- College of Materials Engineering
- Fujian Agriculture and Forestry University
- Fuzhou 350002
- People's Republic of China
| | - Liulian Huang
- College of Materials Engineering
- Fujian Agriculture and Forestry University
- Fuzhou 350002
- People's Republic of China
| | - Mizi Fan
- College of Materials Engineering
- Fujian Agriculture and Forestry University
- Fuzhou 350002
- People's Republic of China
- Nanocellulose and Biocomposites Research Centre, College of Engineering
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81
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Yu L, Hao G, Zhou S, Jiang W. Durable and modified foam for cleanup of oil contamination and separation of oil–water mixtures. RSC Adv 2016. [DOI: 10.1039/c5ra27370f] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
DMMPF still keeps an excellent oil absorption capacity and a large water contact angle after 60 cycles, indicating its excellent reusability.
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Affiliation(s)
- Liuhua Yu
- National Special Superfine Powder Engineering Research Center of China
- Nanjing University of Science and Technology
- Nanjing 210094
- P. R. China
| | - Gazi Hao
- National Special Superfine Powder Engineering Research Center of China
- Nanjing University of Science and Technology
- Nanjing 210094
- P. R. China
| | - Shuai Zhou
- National Special Superfine Powder Engineering Research Center of China
- Nanjing University of Science and Technology
- Nanjing 210094
- P. R. China
| | - Wei Jiang
- National Special Superfine Powder Engineering Research Center of China
- Nanjing University of Science and Technology
- Nanjing 210094
- P. R. China
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82
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Khosravi M, Azizian S. Synthesis of a Novel Highly Oleophilic and Highly Hydrophobic Sponge for Rapid Oil Spill Cleanup. ACS APPLIED MATERIALS & INTERFACES 2015; 7:25326-25333. [PMID: 26496649 DOI: 10.1021/acsami.5b07504] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A highly hydrophobic and highly oleophilic sponge was synthesized by simple vapor-phase deposition followed by polymerization of polypyrrole followed by modification with palmitic acid. The prepared sponge shows high absorption capacity in the field of separation and removal of different oil spills from water surface and was able to emulsify oil/water mixtures. The sponge can be compressed repeatedly without collapsing. Therefore, absorbed oils can be readily collected by simple mechanical squeezing of the sponge. The prepared hydrophobic sponge can collect oil from water in both static and turbulent conditions. The proposed method is simple and low cost for the manufacture of highly oleophilic and highly hydrophobic sponges, which can be successfully used for effective oil-spill cleanup and water filtration.
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Affiliation(s)
- Maryam Khosravi
- Department of Physical Chemistry, Faculty of Chemistry, Bu-Ali Sina University , Hamedan 65167, Iran
| | - Saeid Azizian
- Department of Physical Chemistry, Faculty of Chemistry, Bu-Ali Sina University , Hamedan 65167, Iran
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83
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Hersey JS, Yohe ST, Grinstaff MW. Poly(ε-caprolactone) Microfiber Meshes for Repeated Oil Retrieval. ENVIRONMENTAL SCIENCE : WATER RESEARCH & TECHNOLOGY 2015; 1:779-786. [PMID: 26989490 PMCID: PMC4790115 DOI: 10.1039/c5ew00107b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Electrospun non-woven poly(ε-caprolactone) (PCL) microfiber meshes are described as biodegradable, mechanically robust, and reusable polymeric oil sorbents capable of selectively retrieving oil from simulated oil spills in both fresh and seawater scenarios. Hydrophobic PCL meshes have >99.5% (oil over water) oil selectivity and oil absorption capacities of ~10 grams of oil per gram of sorbent material, which is shown to be a volumetrically driven process. Both the oil selectivity and absorption capacity remained constant over several oil absorption and vacuum assisted retrieval cycles when removing crude oil or mechanical pump oil from deionized water or simulated seawater mixtures. Finally, when challenged with surfactant stabilized water-in-oil emulsions, the PCL meshes continued to show selective oil absorption. These studies add to the knowledge base of synthetic oil sorbents highlighting a need for biodegradable synthetic oil sorbents which balance porosity and mechanical integrity enabling reuse, allowing for the efficient recovery of oil after an accidental oil spill.
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Affiliation(s)
- J S Hersey
- Department of Biomedical Engineering, 590 Commonwealth Ave, Boston MA 02215
| | - S T Yohe
- Department of Biomedical Engineering, 590 Commonwealth Ave, Boston MA 02215
| | - M W Grinstaff
- Department of Biomedical Engineering, 590 Commonwealth Ave, Boston MA 02215; Department of Chemistry, 590 Commonwealth Ave, Boston MA 02215
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84
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Ratcha A, Samart C, Yoosuk B, Sawada H, Reubroycharoen P, Kongparakul S. Polyisoprene modified poly(alkyl acrylate) foam as oil sorbent material. J Appl Polym Sci 2015. [DOI: 10.1002/app.42688] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Arissara Ratcha
- Department of Chemistry; Faculty of Science and Technology; Thammasat University; Pathumthani 12120 Thailand
| | - Chanatip Samart
- Department of Chemistry; Faculty of Science and Technology; Thammasat University; Pathumthani 12120 Thailand
| | - Boonyawan Yoosuk
- National Metal and Materials Technology Center (MTEC); Pathumthani 12120 Thailand
| | - Hideo Sawada
- Department of Frontier Materials Chemistry; Graduate School of Science and Technology, Hirosaki University; Hirosaki 036-8561 Japan
| | | | - Suwadee Kongparakul
- Department of Chemistry; Faculty of Science and Technology; Thammasat University; Pathumthani 12120 Thailand
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85
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Bazargan A, Sadeghi H, Garcia-Mayoral R, McKay G. An unsteady state retention model for fluid desorption from sorbents. J Colloid Interface Sci 2015; 450:127-134. [DOI: 10.1016/j.jcis.2015.02.036] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2014] [Revised: 02/08/2015] [Accepted: 02/12/2015] [Indexed: 12/14/2022]
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86
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Kim KD, Cho YK, Han SW, Park EJ, Kim DH, Jeong MG, Kim YD, Moon J, Hong E, Lim DC. Porous Silica Particles as Oil Absorbents: Comparison of Meso-, Macro-, and Meso/Macro-Structures. B KOREAN CHEM SOC 2015. [DOI: 10.1002/bkcs.10330] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Kwang-Dae Kim
- Department of Chemistry; Sungkyunkwan University; Suwon 440-746 Republic of Korea
| | - Youn Kyoung Cho
- Department of Chemistry; Sungkyunkwan University; Suwon 440-746 Republic of Korea
| | - Sang Wook Han
- Department of Chemistry; Sungkyunkwan University; Suwon 440-746 Republic of Korea
| | - Eun Ji Park
- Department of Chemistry; Sungkyunkwan University; Suwon 440-746 Republic of Korea
| | - Dae Han Kim
- Department of Chemistry; Sungkyunkwan University; Suwon 440-746 Republic of Korea
| | - Myung-Geun Jeong
- Department of Chemistry; Sungkyunkwan University; Suwon 440-746 Republic of Korea
| | - Young Dok Kim
- Department of Chemistry; Sungkyunkwan University; Suwon 440-746 Republic of Korea
- Biorefinery Research Group; Korea Research Institute of Chemical Technology; Daejeon 305-600 Republic of Korea
| | - Jongwoo Moon
- Surface Technology Division; Korea Institute of Materials Science (KIMS); Changwon 641-010 Republic of Korea
| | - Eunmi Hong
- Surface Technology Division; Korea Institute of Materials Science (KIMS); Changwon 641-010 Republic of Korea
| | - Dong Chan Lim
- Surface Technology Division; Korea Institute of Materials Science (KIMS); Changwon 641-010 Republic of Korea
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87
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Si P, Wang J, Zhao C, Xu H, Yang K, Wang W. Preparation and morphology control of three-dimensional interconnected microporous PDMS for oil sorption. POLYM ADVAN TECHNOL 2015. [DOI: 10.1002/pat.3538] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Pengxiang Si
- Shanghai Key Laboratory of Advanced Polymeric Materials; Key Laboratory for Ultrafine Materials of Ministry of Education; School of Materials Science and Engineering; East China University of Science and Technology; Shanghai 200237 PR China
| | - Jikui Wang
- Shanghai Key Laboratory of Advanced Polymeric Materials; Key Laboratory for Ultrafine Materials of Ministry of Education; School of Materials Science and Engineering; East China University of Science and Technology; Shanghai 200237 PR China
| | - Cong Zhao
- Shanghai Key Laboratory of Advanced Polymeric Materials; Key Laboratory for Ultrafine Materials of Ministry of Education; School of Materials Science and Engineering; East China University of Science and Technology; Shanghai 200237 PR China
| | - Heng Xu
- Anhui Collaborative Innovation Center for Petrochemical New Materials
| | - Kun Yang
- Shanghai Key Laboratory of Advanced Polymeric Materials; Key Laboratory for Ultrafine Materials of Ministry of Education; School of Materials Science and Engineering; East China University of Science and Technology; Shanghai 200237 PR China
| | - Wenqi Wang
- Shanghai Key Laboratory of Advanced Polymeric Materials; Key Laboratory for Ultrafine Materials of Ministry of Education; School of Materials Science and Engineering; East China University of Science and Technology; Shanghai 200237 PR China
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88
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Taktak F, İlbay Z. Synthesis of Novel Poly[2-(dimethylamino) ethyl methacrylate]/Pumice Stone Hydrogel Composite for the Rapid Adsorption of Humic Acid in Aqueous Solution. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2015. [DOI: 10.1080/10601325.2015.1007277] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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89
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Yu S, Tan H, Wang J, Liu X, Zhou K. High porosity supermacroporous polystyrene materials with excellent oil-water separation and gas permeability properties. ACS APPLIED MATERIALS & INTERFACES 2015; 7:6745-6753. [PMID: 25762095 DOI: 10.1021/acsami.5b00196] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Two types of monolith high-porosity supermacroporous polystyrene materials had been controlled synthesized from water-in-oil Pickering emulsions. The first type, closed-cell high-porosity (up to 91%) supermacroporous (ca. 500 μm) polystyrene materials (CPPs) was prepared by employing amphiphilic carbonaceous microspheres (CMs) as high internal phase emulsion stabilizer without any inorganic salts or further modifying the wettability of the particles. The second type, hierarchical porous polystyrene materials with highly interconnected macropores (IPPs), was constructed from emulsions stabilized simultaneously by CM particles and a little amount of surfactants. Both types of these monolith porous polystyrene materials possessed excellent mechanical strength. The CPPs were used as absorbents for oil-water separation and high absorption capacity, and absorption rate for oils were realized, which was attributed to their porosity structure and the swelling property of the polystyrene, while the IPPs were highly permeable for gases due to their interconnected macropores.
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Affiliation(s)
- Shuzhen Yu
- School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Hongyi Tan
- School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Jin Wang
- School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Xin Liu
- School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Kebin Zhou
- School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
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90
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Huang S, Li X, Jiao Y, Shi J. Fabrication of a Superhydrophobic, Fire-Resistant, and Mechanical Robust Sponge upon Polyphenol Chemistry for Efficiently Absorbing Oils/Organic Solvents. Ind Eng Chem Res 2015. [DOI: 10.1021/ie504812p] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Shouying Huang
- School
of Environmental Science and Engineering, †Key Laboratory for Green Chemical
Technology of the Ministry of Education, Collaborative Innovation
Center of Chemical Science and Engineering, School of Chemical Engineering
and Technology, and ‡Center for Analysis, Tianjin University, Tianjin, 300072 Tianjin, China
| | - Xuan Li
- School
of Environmental Science and Engineering, †Key Laboratory for Green Chemical
Technology of the Ministry of Education, Collaborative Innovation
Center of Chemical Science and Engineering, School of Chemical Engineering
and Technology, and ‡Center for Analysis, Tianjin University, Tianjin, 300072 Tianjin, China
| | - Yuanqian Jiao
- School
of Environmental Science and Engineering, †Key Laboratory for Green Chemical
Technology of the Ministry of Education, Collaborative Innovation
Center of Chemical Science and Engineering, School of Chemical Engineering
and Technology, and ‡Center for Analysis, Tianjin University, Tianjin, 300072 Tianjin, China
| | - Jiafu Shi
- School
of Environmental Science and Engineering, †Key Laboratory for Green Chemical
Technology of the Ministry of Education, Collaborative Innovation
Center of Chemical Science and Engineering, School of Chemical Engineering
and Technology, and ‡Center for Analysis, Tianjin University, Tianjin, 300072 Tianjin, China
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91
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Fei HF, Gao X, Han X, Wang Q, Hu T, Zhang Z, Xie Z. Synthesis, characterization, and properties of vinyl-terminated copolysiloxanes containing trifluoropropyl and 4-trifluoromethylphenyl groups. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/pola.27530] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hua-Feng Fei
- Laboratory of Advanced Polymer Materials; Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190 China
- College of Chemistry and Chemical Engineering; Graduate University of Chinese Academy of Sciences; Beijing 100049 China
| | - Xiyin Gao
- Laboratory of Advanced Polymer Materials; Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190 China
| | - Xiaojie Han
- Laboratory of Advanced Polymer Materials; Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190 China
- College of Chemistry and Chemical Engineering; Graduate University of Chinese Academy of Sciences; Beijing 100049 China
| | - Qian Wang
- Laboratory of Advanced Polymer Materials; Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190 China
| | - Tao Hu
- Laboratory of Advanced Polymer Materials; Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190 China
- College of Chemistry and Chemical Engineering; Graduate University of Chinese Academy of Sciences; Beijing 100049 China
| | - Zhijie Zhang
- Laboratory of Advanced Polymer Materials; Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190 China
| | - Zemin Xie
- Laboratory of Advanced Polymer Materials; Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190 China
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92
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Si P, Wang J, Guo J, Li S, Cai W, Xu H. Mussel-inspired one-step modification of a porous structured surface with self-cleaning properties for oil sorption. NEW J CHEM 2015. [DOI: 10.1039/c5nj00971e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Surface wettability switched after abrasion/healing cycle treatment.
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Affiliation(s)
- Pengxiang Si
- Polymer Processing Laboratory
- Key Laboratory for Preparation and Application of Ultrafine Materials of Ministry of Education
- School of Material Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
| | - Jikui Wang
- Polymer Processing Laboratory
- Key Laboratory for Preparation and Application of Ultrafine Materials of Ministry of Education
- School of Material Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
| | - Jiahong Guo
- Polymer Processing Laboratory
- Key Laboratory for Preparation and Application of Ultrafine Materials of Ministry of Education
- School of Material Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
| | - Shenzhe Li
- Polymer Processing Laboratory
- Key Laboratory for Preparation and Application of Ultrafine Materials of Ministry of Education
- School of Material Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
| | - Wanping Cai
- Polymer Processing Laboratory
- Key Laboratory for Preparation and Application of Ultrafine Materials of Ministry of Education
- School of Material Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
| | - Heng Xu
- Collaborative Innovation Center for Petrochemical New Materials
- Anqing
- P. R. China
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93
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Ozmen MM, Fu Q, Kim J, Qiao GG. A rapid and facile preparation of novel macroporous silicone-based cryogels via photo-induced thiol–ene click chemistry. Chem Commun (Camb) 2015; 51:17479-82. [DOI: 10.1039/c5cc07417g] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We prepared novel cryogels via facile thiol–ene reaction at low temperatures, which can selectively remove oils with excellent recyclability.
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Affiliation(s)
- Mehmet Murat Ozmen
- Department of Chemical and Biomolecular Engineering
- The University of Melbourne
- Parkville
- Australia
- Department of Bioengineering
| | - Qiang Fu
- Department of Chemical and Biomolecular Engineering
- The University of Melbourne
- Parkville
- Australia
| | - Jinguk Kim
- Department of Chemical and Biomolecular Engineering
- The University of Melbourne
- Parkville
- Australia
| | - Greg G. Qiao
- Department of Chemical and Biomolecular Engineering
- The University of Melbourne
- Parkville
- Australia
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94
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McCall WR, Kim K, Heath C, La Pierre G, Sirbuly DJ. Piezoelectric nanoparticle-polymer composite foams. ACS APPLIED MATERIALS & INTERFACES 2014; 6:19504-19509. [PMID: 25353687 DOI: 10.1021/am506415y] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Piezoelectric polymer composite foams are synthesized using different sugar-templating strategies. By incorporating sugar grains directly into polydimethylsiloxane mixtures containing barium titanate nanoparticles and carbon nanotubes, followed by removal of the sugar after polymer curing, highly compliant materials with excellent piezoelectric properties can be fabricated. Porosities and elasticity are tuned by simply adjusting the sugar/polymer mass ratio which gave an upper bound on the porosity of 73% and a lower bound on the elastic coefficient of 32 kPa. The electrical performance of the foams showed a direct relationship between porosity and the piezoelectric outputs, giving piezoelectric coefficient values of ∼112 pC/N and a power output of ∼18 mW/cm3 under a load of 10 N for the highest porosity samples. These novel materials should find exciting use in a variety of applications including energy scavenging platforms, biosensors, and acoustic actuators.
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Affiliation(s)
- William R McCall
- Department of NanoEngineering and ‡Materials Science and Engineering, University of California, San Diego , La Jolla, California 92093, United States
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95
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Sun J, Xu Y, Chen H, Tan Z, Fan L. Synthesis and Properties of High Oil-Absorbing Resins with Long Chain by High Internal Phase Emulsions as Template. SEP SCI TECHNOL 2014. [DOI: 10.1080/01496395.2014.928322] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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96
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Huang S. Mussel-inspired one-step copolymerization to engineer hierarchically structured surface with superhydrophobic properties for removing oil from water. ACS APPLIED MATERIALS & INTERFACES 2014; 6:17144-17150. [PMID: 25198145 DOI: 10.1021/am5048174] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In the present study, a superhydrophobic polyurethane (PU) sponge with hierarchically structured surface, which exhibits excellent performance in absorbing oils/organic solvents, was fabricated for the first time through mussel-inspired one-step copolymerization approach. Specifically, dopamine (a small molecular bioadhesive) and n-dodecylthiol were copolymerized in an alkaline aqueous solution to generate polydopamine (PDA) nanoaggregates with n-dodecylthiol motifs on the surface of the PU sponge skeletons. Then, the superhydrophobic sponge that comprised a hierarchical structured surface similar to the chemical/topological structures of lotus leaf was fabricated. The topological structures, surface wettability, and mechanical property of the sponge were characterized by scanning electron microscopy, contact angle experiments, and compression test. Just as a result of the highly porous structure, superhydrophobic property and strong mechanical stability, this sponge exhibited desirable absorption capability of oils/organic solvents (weight gains ranging from 2494% to 8670%), suggesting a promising sorbents for the removal of oily pollutants from water. Furthermore, thanks to the nonutilization of the complicated processes or sophisticated equipment, the fabrication of the superhydrophobic sponge seemed to be quite easy to scale up. All these merits make the sponge a competitive candidate when compared to the conventional absorbents, for example, nonwoven polypropylene fabric.
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Affiliation(s)
- Shouying Huang
- College of Chemistry, Nankai University , Tianjin, 300071, PR China
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97
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Yang Y, Tong Z, Ngai T, Wang C. Nitrogen-rich and fire-resistant carbon aerogels for the removal of oil contaminants from water. ACS APPLIED MATERIALS & INTERFACES 2014; 6:6351-6360. [PMID: 24738840 DOI: 10.1021/am5016342] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Effective removal of crude oils, petroleum products, organic solvents, and dyes from water is of significance in oceanography, environmental protection, and industrial production. Various techniques including physical and chemical absorption have been developed, but they suffer from problems such as low separation selectivity, a complicated and lengthy process, as well as high costs for reagents and devices. We present here a new material, termed nitrogen-rich carbon aerogels (NRC aerogels,) with highly porous structure and nitrogen-rich surfaces, exhibiting highly efficient separation of specific substances such as oils and organic pollutants. More importantly, we demonstrate that the fabricated NRC aerogels can also collect micrometer-sized oil droplets from an oil-water mixture with high efficiency that is well beyond what can be achieved by most existing separation methods, but is extremely important in practical marine oil-spill recovery because a certain amount of oils often shears into many micrometer-sized oil droplets by the sea wave, resulting in enormous potential destruction to marine ecosystem if not properly collected. Furthermore, our fabricated material can be used like a recyclable container for oils and chemicals cleanup because the oil/chemical-absorbed NRC aerogels can be readily cleaned for reuse by direct combustion in air because of their excellent hydrophobicity and fire-resistant property. We demonstrate that they keep 61.2% absorption capacity even after 100 absorption/combustion cycles, which thus has the highest recyclability of the reported carbon aerogels. All these features make these fabricated NRC aerogels suitable for a wide range of applications in water purification and treatment.
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Affiliation(s)
- Yu Yang
- Research Institute of Materials Science, South China University of Technology , Guangzhou 510640, China
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98
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Nguyen DT, Kleiman M, Ryu KA, Hiew S, Brubaker K, Mughnetsyan R, Truong R, Dolan B, Tackett E, Esser-Kahn AP. Three-dimensional conformal coatings through the entrapment of polymer membrane precursors. ACS APPLIED MATERIALS & INTERFACES 2014; 6:2830-2835. [PMID: 24437474 DOI: 10.1021/am4053943] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We report a technique to coat polymers onto 3D surfaces distinct from traditional spray, spin, or dip coating. In our technique, the surface of a template structure composed of poly(lactic acid) swells and entraps a soluble polymer precursor. Once entrapped, the precursor is cured, resulting in a thin, conformal membrane. The thickness of each coating depends on the coating solution composition, residence time, and template size. Thicknesses ranged from 400 nm to 4 μm within the experimental conditions we explored. The coating method was compatible with a range of polymers. Complicated 3D structures and microstructures of 10 μm thickness and separation were coated using this technique. The templates can also be selectively removed, leaving behind a hollow membrane structure in the shape of the original printed, extruded, or microporous template structures. This technique may be useful in applications that benefit from three-dimensional membrane topologies, including catalysis, separations, and potentially tissue engineering.
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Affiliation(s)
- Du T Nguyen
- Department of Chemistry, ‡Department of Physics and Astronomy, and §Rapid Tech, University of California , Irvine, California 92697, United States
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