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Fashandi M, Rejeb ZB, Naguib HE, Park CB. Melamine Network as a Solution for Significant Enhancement of the Mechanical, Adsorptive, and Surface Properties in a Novel Carbon Nanomaterial-Silica Aerogel Composite. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 38684012 DOI: 10.1021/acsami.4c00415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
Silica aerogels exhibit exceptional characteristics such as mesoporosity, light weight, high surface area, and pore volume. Nevertheless, their utilization in industrial settings remains constrained due to their brittleness, moisture sensitivity, and costly synthesis procedure. Several studies have proved that adding nanofillers, such as carbon nanotubes (CNT) or graphene nanoplatelets (GNP), can improve the mechanical strength of the aerogels. The incorporation of nanofillers is often accompanied by agglomeration and pore blockage, which, in turn, deteriorates the surface area, pore volume, and low density. Including flexible melamine foam (MF) as a scaffold for the silica aerogel and nanofiller composite can prevent the restacking of the nanofillers through π-π interaction, hence maintaining the incredible properties of aerogels and improving their mechanical properties. CNT, GNP, and the polymeric silica precursor, polyvinyltrimethoxysilane (PVTMS), were added to a MF, at varying concentrations, to fabricate the MF-aerogel nanocomposites. Surfactant and sonication were utilized to ensure a homogeneous dispersion of the nanofillers in the system. The presence of MF prevented the agglomeration of nanofillers, resulting in lower density and relatively higher surface properties (SBET up to 929 m2·g-1 and pore volume up to 4.34 cc·g-1). Moreover, the MF-supported samples could endure 80% strain without breakage and showed an outstanding compressive strength of up to ∼20 MPa. These aerogel nanocomposites also demonstrated an excellent volatile organic compound (∼2680 mg·g-1) and cationic dye adsorption (∼10 mg·g-1).
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Affiliation(s)
- Maryam Fashandi
- Microcellular Plastics Manufacturing Laboratory, Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario M5S 3G8, Canada
| | - Zeineb Ben Rejeb
- Microcellular Plastics Manufacturing Laboratory, Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario M5S 3G8, Canada
| | - Hani E Naguib
- Toronto Smart Materials & Structures, Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario M5S 3G8, Canada
| | - Chul B Park
- Microcellular Plastics Manufacturing Laboratory, Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario M5S 3G8, Canada
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Kallawar GA, Bhanvase BA. A review on existing and emerging approaches for textile wastewater treatments: challenges and future perspectives. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:1748-1789. [PMID: 38055170 DOI: 10.1007/s11356-023-31175-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Accepted: 11/18/2023] [Indexed: 12/07/2023]
Abstract
This comprehensive review explores the complex environment of textile wastewater treatment technologies, highlighting both well-established and emerging techniques. Textile wastewater poses a significant environmental challenge, containing diverse contaminants and chemicals. The review presents a detailed examination of conventional treatments such as coagulation, flocculation, and biological processes, highlighting their effectiveness and limitations. In textile industry, various textile operations such as sizing, de-sizing, dyeing, bleaching, and mercerization consume large quantities of water generating effluent high in color, chemical oxygen demand, and solids. The dyes, mordants, and variety of other chemicals used in textile processing lead to effluent variable in characteristics. Furthermore, it explores innovative and emerging techniques, including advanced oxidation processes, membrane filtration, and nanotechnology-based solutions. Future perspectives in textile wastewater treatment are discussed in-depth, emphasizing the importance of interdisciplinary research, technological advancements, and the integration of circular economy principles. Numerous dyes used in the textile industry have been shown to have mutagenic, cytotoxic, and ecotoxic potential in studies. Therefore, it is necessary to assess the methods used to remediate textile waste water. Major topics including the chemical composition of textile waste water, the chemistry of the dye molecules, the selection of a treatment technique, the benefits and drawbacks of the various treatment options, and the cost of operation are also addressed. Overall, this review offers a valuable resource for researchers and industry professionals working in the textile industry, pointing towards a more sustainable and environmentally responsible future.
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Affiliation(s)
- Gauri A Kallawar
- Department of Chemical Technology, Dr. Babasaheb Ambedkar, Marathwada University, Chatrapati Sambhajinagar, 431004, MS, India
- Department of Chemical Engineering, Laxminarayan Innovation Technological University (Formerly Laxminarayan Institute of Technology), Nagpur, 440033, MS, India
| | - Bharat A Bhanvase
- Department of Chemical Engineering, Laxminarayan Innovation Technological University (Formerly Laxminarayan Institute of Technology), Nagpur, 440033, MS, India.
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Porangaba MA, Silva RA, Gomes DF, de Araújo AC, Ghislandi MG. Portable desalinator using graphene oxide functionalized microporous membranes. Chem Eng Res Des 2023. [DOI: 10.1016/j.cherd.2023.03.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
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Pan Y, Shi Z, Li J, Zhang Z, Li X, Zhuang Z, Mo Y, Liang J, Wang Z, An M, Luo Q, Chen X. Graphene oxide laminates intercalated with Prussian blue nanocube as a photo-Fenton self-cleaning membrane for enhanced water purification. J Memb Sci 2023. [DOI: 10.1016/j.memsci.2023.121465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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Influence of flake size and electrolyte conditions on graphene oxide adsorption of ionic dyes. POWDER TECHNOL 2023. [DOI: 10.1016/j.powtec.2023.118387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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Characterization of graphene oxide-ziziphus seeds and its application as a hazardous dye removal adsorbent. Sci Rep 2023; 13:1631. [PMID: 36717602 PMCID: PMC9886902 DOI: 10.1038/s41598-023-28924-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Accepted: 01/27/2023] [Indexed: 01/31/2023] Open
Abstract
The zizphus seeds are considered as a biomaterial residues that has been used for removing of organic industrial waste such as 2-((10-octyl-9,10-dihydroanthracene-2-yl) methylene) malononitrile (PTZS-CN) dye from aqueous solutions utilizing graphene oxide-Ziziphus (GO-Ziziphus). A batch study explored the impacts of various experimental circumstances, including solution pH, initial dye concentration, temperature, and contact time. General order, nonlinear pseudo-first order and pseudo-second order, elvoich model and intraparticiple diffusion were utilized to analyze the kinetic data. The adsorption kinetics of dye onto GO-ziziphus adsorption was best mentioned by nonlinear pseudo-first order. Similarly, the intra-particle diffusion plots revealed one exponential line throughout the adsorption process. The Freundlich, Dubinin-Radushkevich, and Langmuir models were employed to examine isothermal data. It provided the best fit of the dye adsorption isothermal data onto GO-ziziphus Freundlich models. Besides, the calculated free energies showed that the adsorption progression was physical adsorption. Thermodynamic calculations revealed that dye adsorption onto GO-ziziphus was exothermic and spontaneous. The combined results indicated that GO-ziziphus powder might be used to treat dye-rich wastewater effectively.
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Hotan Alsohaimi I, Alhumaimess MS, Abdullah Alqadami A, Tharwi Alshammari G, Fawzy Al-Olaimi R, Abdeltawab AA, El-Sayed MY, Hassan HM. Adsorptive performance of Aminonaphthalenesulfonic acid modified magnetic-graphene oxide for methylene blue dye: mechanism, isotherm and thermodynamic studies. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.110261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Tran DT, Nguyen TH, Doan TH, Dang VC, Nghiem LD. Removal of direct blue 71 and methylene blue from water by graphene oxide: effects of charge interaction and experimental parameters. J DISPER SCI TECHNOL 2022. [DOI: 10.1080/01932691.2022.2102034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Affiliation(s)
- Dinh-Trinh Tran
- VNU Key Lab. of Advanced Materials for Green Growth, University of Science, Vietnam National University, Hanoi, Vietnam
| | - Thi-Hanh Nguyen
- Faculty of Environmental Science, University of Science, Vietnam National University, Thanh Xuan, Hanoi, Vietnam
| | - Thi-Hoa Doan
- VNU Key Lab. of Advanced Materials for Green Growth, University of Science, Vietnam National University, Hanoi, Vietnam
| | - Viet-Cuong Dang
- VNU Key Lab. of Advanced Materials for Green Growth, University of Science, Vietnam National University, Hanoi, Vietnam
| | - Long D. Nghiem
- Centre for Technology in Water and Wastewate, University of Technology Sydney, NSW, Australia
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Das D, Sharma AK, Chattopadhyay KK, Banerjee D. Dye Removal Ability of Pure and Doped Graphitic Carbon Nitride. CURR ANAL CHEM 2022. [DOI: 10.2174/1573411017666210108092850] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
Rapid escalation in textile, paper, pesticides, pharmaceuticals and several other chemical based
manufacturing industries due to amplification in human requirements have proportionately contributed to the extreme
contamination of water ecosystem, resulted from the discharge of toxic pollutants from industries. Effluents from textile
industries are comprised of coloured dyes like Rhodamine B, Methyl Orange, Methylene Blue and phenolic compounds
which deserve special mention owing to their non-biodegradable, carcinogenic and severe detrimental nature. Urgent
needs to ameliorate this fast declining environmental situation are of immense necessity in current scenario.
Objectives:
Objectives: In this regard, graphitic carbon nitride (GCN) is a distinguished material for water purification-based
applications because of its exclusive characteristics making it highly prospective for degradation of toxic dyes from water
by catalysis and adsorption techniques. GCN has been a material of conspicuous interest in recent times owing to its two
dimensional sheets like structure with favourable surface area, and cost-effective synthesis approaches along with high
production yield. This article presents a detail study of different aspects of GCN as a material of potential for water
purification. Through extensive literature survey it has been shown that GCN is an effective material to be used in the
fields of application. Several effective procedures like catalysis or adsorption for removal of dyes from water have been
discussed with their basic science behind.
Conclusions:
This systematic effort shows that GCN can be considered to be one of the most efficient water purifier with
further advantages arising from its easy and cost effective large scale synthesis.
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Affiliation(s)
- Dimitra Das
- School of Materials Science and Nanotechnology, Jadavpur University, Kolkata,India
| | - Amit Kuamr Sharma
- Faculty of Engineering and Computing Sciences, Teerthanker Mahaveer University, Moradabad, UP 244001,India
| | | | - Diptonil Banerjee
- Faculty of Engineering and Computing Sciences, Teerthanker Mahaveer University, Moradabad, UP 244001,India
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Verma S, Kim KH. Graphene-based materials for the adsorptive removal of uranium in aqueous solutions. ENVIRONMENT INTERNATIONAL 2022; 158:106944. [PMID: 34689036 DOI: 10.1016/j.envint.2021.106944] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 09/19/2021] [Accepted: 10/17/2021] [Indexed: 06/13/2023]
Abstract
Ground water contamination by radioactive elements has become a critical issue that can pose significant threats to human health. Adsorption is the most promising approach for the removal of radioactive elements owing to its simplicity, effectiveness, and easy operation. Among the plethora of functional adsorbents, graphene oxide and its derivatives are recognized for their excellent potential as adsorbent with the unique 2D structure, high surface area, and intercalated functional groups. To learn more about their practical applicability, the procedures involved in their preparation and functionalization are described with the microscopic removal mechanism by GO functionalities across varying solution pH. The performance of these adsorbents is assessed further in terms of the basic performance metrics such as partition coefficient. Overall, this article is expected to provide valuable insights into the current status of graphene-based adsorbents developed for uranium removal with a guidance for the future directions in this research field.
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Affiliation(s)
- Swati Verma
- Department of Civil & Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Korea
| | - Ki-Hyun Kim
- Department of Civil & Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Korea.
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Popoola TJ, Okoronkwo AE, Oluwasina OO, Adebayo MA. Preparation, characterization, and application of a homemade graphene for the removal of Congo red from aqueous solutions. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:52174-52187. [PMID: 34002313 DOI: 10.1007/s11356-021-14434-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 05/11/2021] [Indexed: 06/12/2023]
Abstract
Ethylene diaminetetraacetic acid (EDTA)-functionalized graphene was synthesized from Nigerian coal using a chemical exfoliation method and the graphene was applied for the removal of Congo red dye from aqueous solutions. The synthesized coal graphene and the raw coal were characterized using Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD) spectroscopy, scanning electron microscopy (SEM)-energy-dispersive X-ray (EDX) spectroscopy, measurement of pHpzc (pH of point of zero charge), and Boehm titrations. The SEM data revealed surface roughness which is enhanced in the prepared graphene while the EDX revealed an increase in carbon content, the main constituent of graphene, from about 26% in the raw coal to about 80% in the prepared graphene. Various adsorption variables, such as pH, contact time, concentration of Congo red, and temperature, were varied for the removal of the dye using raw coal and the synthesized coal graphene. The Liu isotherm gave the best fit of the equilibrium data than the Langmuir, Freundlich, and Dubinin-Radushkevich models. The maximum adsorption capacities of the raw coal and synthesized coal graphene at 25°C are 109.1 mg/g and 129.0 mg/g, respectively. The Avrami fractional-order kinetic model was the best model for description of the kinetic data. The model had the lowest values of standard deviation than the pseudo-first-order and pseudo-second-order models. The adsorption process of the two materials occurred via two stages as proved by intraparticle diffusion model. The adsorption process of the Congo red removal was spontaneous, feasible, and endothermic. The study conclusively revealed the graphene nanomaterial to be a viable adsorbent for textile wastewater treatment.
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Affiliation(s)
- Temilolu J Popoola
- Department of Chemistry, The Federal University of Technology, Akure, Ondo State, Nigeria
| | - Afamefuna E Okoronkwo
- Department of Chemistry, The Federal University of Technology, Akure, Ondo State, Nigeria
| | - Olugbenga O Oluwasina
- Department of Chemistry, The Federal University of Technology, Akure, Ondo State, Nigeria
| | - Matthew A Adebayo
- Department of Chemistry, The Federal University of Technology, Akure, Ondo State, Nigeria.
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Ion I, Bogdan D, Mincu MM, Ion AC. Modified Exfoliated Carbon Nanoplatelets as Sorbents for Ammonium from Natural Mineral Waters. Molecules 2021; 26:molecules26123541. [PMID: 34200629 PMCID: PMC8229306 DOI: 10.3390/molecules26123541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 06/04/2021] [Accepted: 06/05/2021] [Indexed: 10/28/2022] Open
Abstract
In this manuscript an improved sorbent based on modified exfoliated carbon nanoplatelets, applied in the removal of ammonium from aqueous samples, is presented. This sorbent showed better efficiency in comparison with the previous one obtained in our group for ammonium removal, the values of the maximum sorption capacity being improved from 10 to 12.04 mg/g. In terms of kinetics and sorption characteristic parameters, their values were also improved. Based on these results, a sorption mechanism was proposed, taking into account ion-exchange and chemisorption processes at the surface of the oxidized exfoliated carbon nanoplatelets. Future applications for simultaneous removal of other positive charged contaminants from natural waters might be possible.
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Affiliation(s)
- Ion Ion
- Department of Analytical Chemistry and Environmental Engineering, University Politehnica of Bucharest, 1-7 Polizu Str., 011061 Bucharest, Romania; (I.I.); (D.B.)
| | - Daniela Bogdan
- Department of Analytical Chemistry and Environmental Engineering, University Politehnica of Bucharest, 1-7 Polizu Str., 011061 Bucharest, Romania; (I.I.); (D.B.)
| | - Monica Maria Mincu
- Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, 30 Reactorului Str., Magurele, 077125 Bucharest, Romania;
| | - Alina Catrinel Ion
- Department of Analytical Chemistry and Environmental Engineering, University Politehnica of Bucharest, 1-7 Polizu Str., 011061 Bucharest, Romania; (I.I.); (D.B.)
- Correspondence: ; Tel.: +40-2319492
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Nguyet PN, Watari T, Hirakata Y, Hatamoto M, Yamaguchi T. Adsorption and biodegradation removal of methylene blue in a down-flow hanging filter reactor incorporating natural adsorbent. ENVIRONMENTAL TECHNOLOGY 2021; 42:410-418. [PMID: 31179878 DOI: 10.1080/09593330.2019.1629636] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 06/03/2019] [Indexed: 06/09/2023]
Abstract
This study was carried out to explore the importance of adsorption and biodegradation mechanisms for methylene blue (MB) removal by a novel natural adsorbent (purified coconut fibre; PCF) incorporated to a down-flow hanging fibre (DHF) reactor. An adsorption DHF (Ads-DHF) reactor demonstrated the adsorption removal mechanism, while a combined adsorption-biological DHF (Bio-DHF) reactor simulated the processes of both adsorption and biodegradation were investigated for the MB removal capability. PCF prepared from coconut fibre waste was applied as a media in the DHF reactors. The process performance and the removal mechanisms of the DHF reactors were evaluated for 62 days. The results showed that a total MB removal efficiency of 93 ± 7% was achieved for the Bio-DHF reactor and 36 ± 25% for the Ads-DHF reactor. The combined adsorption and biological degradation in the Bio-DHF reactor enhanced the removal efficiency and the life-time of the reactor compared with the performance of the adsorption process alone in the Ads-DHF reactor. Moreover, microbial community analysis revealed that microorganisms, commonly involved in the biodegradation of dyes, were predominant in the Bio-DHF reactor. The PCF media of the Bio-DHF reactor was essential to keep the dye degrading bacteria in the reactor. Therefore, it can be concluded that the Bio-DHF reactor is an appropriate treatment system for treating dyes wastewater. This research is significant and useful for environmental protection and reuse of biomass wastes.
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Affiliation(s)
- Phan Nhu Nguyet
- Department of Civil and Environmental Engineering, Nagaoka University of Technology, Nagaoka, Japan
| | - Takahiro Watari
- Department of Civil and Environmental Engineering, Nagaoka University of Technology, Nagaoka, Japan
| | - Yuga Hirakata
- Department of Civil and Environmental Engineering, Nagaoka University of Technology, Nagaoka, Japan
| | - Masashi Hatamoto
- Department of Civil and Environmental Engineering, Nagaoka University of Technology, Nagaoka, Japan
| | - Takashi Yamaguchi
- Department of Civil and Environmental Engineering, Nagaoka University of Technology, Nagaoka, Japan
- Department of Science of Technology Innovation, Nagaoka University of Technology, Nagaoka, Japan
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The Application of Modified Natural Polymers in Toxicant Dye Compounds Wastewater: A Review. WATER 2020. [DOI: 10.3390/w12072032] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The utilization of various types of natural and modified polymers for removing toxicant dyes in wastewater generated by the dye industry is reviewed in this article. Dye wastewater contains large amounts of metals, surfactants, and organic matter, which have adverse effects on human health, potentially causing skin diseases and respiratory problems. The removal of dyes from wastewaters through chemical and physical processes has been addressed by many researchers. Currently, the use of natural and modified polymers for the removal of dyes from wastewater is becoming more common. Although modified polymers are preferred for the removal of dyes, due to their biodegradability and non-toxic nature, large amounts of polymers are required, resulting in higher costs. Surface-modified polymers are more effective for the removal of dyes from the wastewater. A survey of 80 recently published papers demonstrates that modified polymers have outstanding dye removal capabilities, and thus have a high applicability in industrial wastewater treatment.
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Varghese D, Bento JL, Ward SP, Adamson DH. Self-Assembled Graphene Composites for Flow-Through Filtration. ACS APPLIED MATERIALS & INTERFACES 2020; 12:29692-29699. [PMID: 32492330 DOI: 10.1021/acsami.0c05831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Spontaneously exfoliated pristine graphene is used as a surfactant to template the formation of electrically conductive filters for the adsorption of an organic dye from water. In contrast to other reported graphene-based adsorption materials, our system provides a continuous approach to water treatment rather than a batch approach, and uses pristine graphene instead of the more costly and environmentally challenging graphene oxide. The use of self-assembled graphene also results in our filters being electrically conductive, providing a convenient route to clean the filters by resistive heating. An investigation of the mechanism of formation and filtration by these filters, templated by self-assembled two-dimensional pristine graphene, is presented. The thermodynamically driven exfoliation of natural flake graphite at a high-energy monomer/water interface produces water-in-oil emulsions stabilized by a thin layer of overlapping graphene sheets. Subsequent polymerization of the continuous monomer phase produces polymer foams with cells lined by graphene. With a combination of acoustic spectroscopy and electron microscopy, the effects of graphite concentration and temperature are studied, as is the correlation between droplet size and the size of the cells in the final polymer foam.
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