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Goudar SH, Bhoi S, Sahoo SK, Rao KV, Kurra N. Supramolecular Engineering of Ti 3C 2T x MXene -Perylene Diimide Hybrid Electrodes for the Pseudocapacitive Electrochemical Storage of Calcium Ions. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2309905. [PMID: 38258408 DOI: 10.1002/smll.202309905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 01/06/2024] [Indexed: 01/24/2024]
Abstract
The rare combination of metallic conductivity and surface redox activity enables 2D MXenes as versatile charge storage hosts for the design of high-rate electrochemical energy storage devices. However, high charge density metal ions including but not limited to Ca+2 and Mg+2 pose challenges such as sluggish solid-state diffusion and also inhibiting the charge transfer across electrode-electrolyte interfaces. In this work, free-standing hybrid electrode architectures based on 2D titanium carbide-cationic perylene diimide (Ti3C2Tx@cPDI) via supramolecular self-assembly are developed. Secondary bonding interactions such as dipole-dipole and hydrogen bonding between Ti3C2Tx and cPDI are investigated by zeta potential and Fourier-transformed infrared (FTIR) spectroscopy . Ti3C2Tx@cPDI free-standing electrodes show typical volumetric capacitance up to 260 F cm-3 in Mg2+ and Ca2+ aqueous electrolytes at charging times scales from 3 minutes to a few seconds. Three-dimensional (3D) Bode maps are constructed to understand the charge storage dynamics of Ti3C2Tx@cPDI hybrid electrode in an aqueous Ca-ion electrolyte. ,Pseudocapacitance is solely contributed by the nanoscale distribution of redox-active cPDI supramolecular polymers across 2D Ti3C2Tx. This study opens avenues for the design of a wide variety of MXene@redox active organic charge hosts for high-rate pseudocapacitive energy storage devices.
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Affiliation(s)
- Soujanya H Goudar
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana, 502284, India
| | - Shubham Bhoi
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana, 502284, India
| | - Saroj Kumar Sahoo
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana, 502284, India
| | - Kotagiri Venkata Rao
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana, 502284, India
| | - Narendra Kurra
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana, 502284, India
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2
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Rathinam Thiruppathi Venkadajapathy V, Sivaperumal S. Tailoring functional two-dimensional nanohybrids: A comprehensive approach for enhancing photocatalytic remediation. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 275:116221. [PMID: 38547728 DOI: 10.1016/j.ecoenv.2024.116221] [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: 10/18/2023] [Revised: 02/07/2024] [Accepted: 03/14/2024] [Indexed: 04/12/2024]
Abstract
Photocatalysis is gaining prominence as a viable alternative to conventional biohazard treatment technologies. Two-dimensional (2D) nanomaterials have become crucial for fabricating novel photocatalysts due to their nanosheet architectures, large surface areas, and remarkable physicochemical properties. Furthermore, a variety of applications are possible with 2D nanomaterials, either in combination with other functional nanoparticles or by utilizing their inherent properties. Henceforth, the review commences its exploration into the synthesis of these materials, delving into their inherent properties and assessing their biocompatibility. Subsequently, an overview of mechanisms involved in the photocatalytic degradation of pollutants and the processes related to antimicrobial action is presented. As an integral part of our review, we conduct a systematic analysis of existing challenges and various types of 2D nanohybrid materials tailored for applications in the photocatalytic degradation of contaminants and the inactivation of pathogens through photocatalysis. This investigation will aid to contribute to the formulation of decision-making criteria and design principles for the next generation of 2D nanohybrid materials. Additionally, it is crucial to emphasize that further research is imperative for advancing our understanding of 2D nanohybrid materials.
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3
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Lin YL, Zheng S, Chang CC, Lee LR, Chen JT. Light-responsive MXenegel via interfacial host-guest supramolecular bridging. Nat Commun 2024; 15:916. [PMID: 38296994 PMCID: PMC10831044 DOI: 10.1038/s41467-024-45188-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 01/17/2024] [Indexed: 02/02/2024] Open
Abstract
Living in the global-changing era, intelligent and eco-friendly electronic components that can sense the environment and recycle or reprogram when needed are essential for sustainable development. Compared with solid-state electronics, composite hydrogels with multi-functionalities are promising candidates. By bridging the self-assembly of azobenzene-containing supramolecular complexes and MXene nanosheets, we fabricate a MXene-based composite gel, namely MXenegel, with reversible photo-modulated phase behavior. The MXenegel can undergo reversible liquefication and solidification under UV and visible light irradiations, respectively, while maintaining its conductive nature unchanged, which can be integrated into traditional solid-state circuits. The strategy presented in this work provides an example of light-responsive conducting material via supramolecular bridging and demonstrates an exciting platform for functional soft electronics.
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Affiliation(s)
- Yu-Liang Lin
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu, 300093, Taiwan
| | - Sheng Zheng
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu, 300093, Taiwan
| | - Chun-Chi Chang
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu, 300093, Taiwan
| | - Lin-Ruei Lee
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu, 300093, Taiwan
| | - Jiun-Tai Chen
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu, 300093, Taiwan.
- Center for Emergent Functional Matter Science, National Yang Ming Chiao Tung University, Hsinchu, 300093, Taiwan.
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4
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Arole K, Chen Y, Delgado A, Hubbard J, Liang H. Urea-ZrP nanoparticle-enabled electro-responsivity. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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5
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Arole K, Blivin JW, Bruce AM, Athavale S, Echols IJ, Cao H, Tan Z, Radovic M, Lutkenhaus JL, Green MJ. Exfoliation, delamination, and oxidation stability of molten salt etched Nb 2CT z MXene nanosheets. Chem Commun (Camb) 2022; 58:10202-10205. [PMID: 36000425 DOI: 10.1039/d2cc02237k] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Despite numerous prior reports of molten salt etching of MAX phases, few of these reports achieved water-dispersible MXene nanosheets, and none for Nb-based MXenes. Here we demonstrate the synthesis and aqueous dispersibility of Nb2CTZ nanosheets via molten salt etching and utilizing a KOH wash to add hydroxyl surface groups. However, little is known about the oxidation of molten salt etched MXenes compared to acid-etched MXenes. Our results indicate slower oxidation behavior for MXenes etched by molten salts, which may be due to the decreased amount of oxygen-containing terminal groups.
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Affiliation(s)
- Kailash Arole
- Department of Materials Science and Engineering, Texas A&M University, College Station, TX, 77843, USA.
| | - Jackson W Blivin
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX, 77843, USA
| | - Atiana M Bruce
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX, 77843, USA
| | - Swarnima Athavale
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX, 77843, USA
| | - Ian J Echols
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX, 77843, USA
| | - Huaixuan Cao
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX, 77843, USA
| | - Zeyi Tan
- Department of Materials Science and Engineering, Texas A&M University, College Station, TX, 77843, USA.
| | - Miladin Radovic
- Department of Materials Science and Engineering, Texas A&M University, College Station, TX, 77843, USA.
| | - Jodie L Lutkenhaus
- Department of Materials Science and Engineering, Texas A&M University, College Station, TX, 77843, USA. .,Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX, 77843, USA
| | - Micah J Green
- Department of Materials Science and Engineering, Texas A&M University, College Station, TX, 77843, USA. .,Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX, 77843, USA
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6
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Yi M, Wang M, Wang Y, Wang Y, Chang J, Kheirabad AK, He H, Yuan J, Zhang M. Poly(ionic liquid)‐Armored MXene Membrane: Interlayer Engineering for Facilitated Water Transport. Angew Chem Int Ed Engl 2022; 61:e202202515. [PMID: 35504856 PMCID: PMC9324950 DOI: 10.1002/anie.202202515] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Indexed: 11/16/2022]
Abstract
Two‐dimensional (2D) MXene‐based lamellar membranes bearing interlayers of tunable hydrophilicity are promising for high‐performance water purification. The current challenge lies in how to engineer the pore wall's surface properties in the subnano‐confinement environment while ensuring its high selectivity. Herein, poly(ionic liquid)s, equipped with readily exchangeable counter anions, succeeded as a hydrophilicity modifier in addressing this issue. Lamellar membranes bearing nanochannels of tailorable hydrophilicity are constructed via assembly of poly(ionic liquid)‐armored MXene nanosheets. By shifting the interlayer galleries from being hydrophilic to more hydrophobic via simple anion exchange, the MXene membrane performs drastically better for both the permeance (by two‐fold improvement) and rejection (≈99 %). This facile method opens up a new avenue for building 2D material‐based membranes of enhancing molecular transport and sieving effect.
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Affiliation(s)
- Ming Yi
- Key Laboratory of Material Chemistry for Energy Conversion and Storage Huazhong University of Science and Technology Wuhan 430074 P. R. China
- Hubei Key Laboratory of Material Chemistry and Service Failure School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan 430074 P. R. China
- Department of Materials and Environmental Chemistry Stockholm University Stockholm 10691 Sweden
| | - Mi Wang
- Beijing Key Laboratory of Ionic Liquids Clean Process State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Yan Wang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage Huazhong University of Science and Technology Wuhan 430074 P. R. China
- Hubei Key Laboratory of Material Chemistry and Service Failure School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan 430074 P. R. China
| | - Yanlei Wang
- Beijing Key Laboratory of Ionic Liquids Clean Process State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Jian Chang
- Department of Materials and Environmental Chemistry Stockholm University Stockholm 10691 Sweden
| | | | - Hongyan He
- Beijing Key Laboratory of Ionic Liquids Clean Process State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Jiayin Yuan
- Department of Materials and Environmental Chemistry Stockholm University Stockholm 10691 Sweden
| | - Miao Zhang
- Department of Materials and Environmental Chemistry Stockholm University Stockholm 10691 Sweden
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7
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Yi M, Wang M, Wang Y, Wang Y, Chang J, Kheirabad AK, He H, Yuan J, Zhang M. Poly(ionic liquid)‐Armored MXene Membrane: Interlayer Engineering for Facilitated Water Transport. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ming Yi
- Key Laboratory of Material Chemistry for Energy Conversion and Storage Huazhong University of Science and Technology Wuhan 430074 P. R. China
- Hubei Key Laboratory of Material Chemistry and Service Failure School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan 430074 P. R. China
- Department of Materials and Environmental Chemistry Stockholm University Stockholm 10691 Sweden
| | - Mi Wang
- Beijing Key Laboratory of Ionic Liquids Clean Process State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Yan Wang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage Huazhong University of Science and Technology Wuhan 430074 P. R. China
- Hubei Key Laboratory of Material Chemistry and Service Failure School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan 430074 P. R. China
| | - Yanlei Wang
- Beijing Key Laboratory of Ionic Liquids Clean Process State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Jian Chang
- Department of Materials and Environmental Chemistry Stockholm University Stockholm 10691 Sweden
| | | | - Hongyan He
- Beijing Key Laboratory of Ionic Liquids Clean Process State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Jiayin Yuan
- Department of Materials and Environmental Chemistry Stockholm University Stockholm 10691 Sweden
| | - Miao Zhang
- Department of Materials and Environmental Chemistry Stockholm University Stockholm 10691 Sweden
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8
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Zhang Z, Cao H, Quan Y, Ma R, Pentzer EB, Green MJ, Wang Q. Thermal Stability and Flammability Studies of MXene–Organic Hybrid Polystyrene Nanocomposites. Polymers (Basel) 2022; 14:polym14061213. [PMID: 35335541 PMCID: PMC8954563 DOI: 10.3390/polym14061213] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 03/13/2022] [Accepted: 03/14/2022] [Indexed: 12/10/2022] Open
Abstract
Polystyrene (PS) is widely used in the plastics industry, but the application range of PS is limited due to its inherently high flammability. A variety of two-dimensional (2D) nanomaterials have been reported to impart excellent flame retardancy to polymeric materials. In this study, a 2D nanomaterial MXene–organic hybrid (O-Ti3C2) was applied to PS as a nanofiller. Firstly, the MXene nanosheets were prepared by acid etching, intercalation, and delamination of bulk MAX (Ti3AlC2) material. These exfoliated MXene nanosheets were then functionalized using a cationic surfactant to improve the dispersibility in DMF. Even with a small loading of functionalized O-Ti3C2 (e.g., 2 wt%), the resulting PS nanocomposite (PS/O-Ti3C2) showed good thermal stability and lower flammability evidenced by thermogravimetric analysis (TGA) and pyrolysis-combustion flow calorimetry (PCFC). The peak heat release rate (pHRR) was significantly reduced by 32% compared to the neat PS sample. In addition, we observed that the temperature at pHRR (TpHRR) shifted to a higher temperature by 22 °C. By comparing the TGA and PCFC results between the PS/MAX and different weight ratios of PS/O-Ti3C2 nanocomposites, the thermal stability and 2D thermal- and mass-transfer barrier effect of MXene–organic hybrid nanosheets were revealed to play essential roles in delaying the polymer degradation.
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Affiliation(s)
- Zhuoran Zhang
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX 77843, USA; (Z.Z.); (H.C.); (Y.Q.); (R.M.); (M.J.G.)
| | - Huaixuan Cao
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX 77843, USA; (Z.Z.); (H.C.); (Y.Q.); (R.M.); (M.J.G.)
- Department of Materials Science and Engineering, Texas A&M University, College Station, TX 77843, USA;
| | - Yufeng Quan
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX 77843, USA; (Z.Z.); (H.C.); (Y.Q.); (R.M.); (M.J.G.)
| | - Rong Ma
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX 77843, USA; (Z.Z.); (H.C.); (Y.Q.); (R.M.); (M.J.G.)
| | - Emily B. Pentzer
- Department of Materials Science and Engineering, Texas A&M University, College Station, TX 77843, USA;
- Department of Chemistry, Texas A&M University, College Station, TX 77843, USA
| | - Micah J. Green
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX 77843, USA; (Z.Z.); (H.C.); (Y.Q.); (R.M.); (M.J.G.)
- Department of Materials Science and Engineering, Texas A&M University, College Station, TX 77843, USA;
| | - Qingsheng Wang
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX 77843, USA; (Z.Z.); (H.C.); (Y.Q.); (R.M.); (M.J.G.)
- Correspondence:
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9
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Arole K, Blivin JW, Saha S, Holta DE, Zhao X, Sarmah A, Cao H, Radovic M, Lutkenhaus JL, Green MJ. Water-dispersible Ti3C2Tz MXene nanosheets by molten salt etching. iScience 2021; 24:103403. [PMID: 34849467 PMCID: PMC8607195 DOI: 10.1016/j.isci.2021.103403] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 09/29/2021] [Accepted: 11/03/2021] [Indexed: 11/23/2022] Open
Abstract
Molten-salt etching of Ti3AlC2 MAX phase offers a promising route to produce 2D Ti3C2Tz (MXene) nanosheets without hazardous HF. However, molten-salt etching results in MXene clays that are not water dispersible, thus preventing further processing. This occurs because molten-salt etching results in a lack of -OH terminal groups rendering the MXene clay hydrophobic. Here, we demonstrate a method that produces water-dispersible Ti3C2Tz nanosheets using molten salt (SnF2) to etch. In molten salt etching, SnF2 diffuses between the layers to form AlF3 and Sn as byproducts, separating the layers. The stable, aqueous Ti3C2Tz dispersion yields a ζ potential of -31.7 mV, because of -OH terminal groups introduced by KOH washing. X-ray diffraction and electron microscopy confirm the formation of Ti3C2Tz etched clay with substantial d-spacing as compared with clay etched with HF. This work is the first to use molten salt etching to successfully prepare colloidally stable aqueous dispersions of Ti3C2Tz nanosheets.
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Affiliation(s)
- Kailash Arole
- Department of Materials Science and Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Jackson W. Blivin
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Sanjit Saha
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Dustin E. Holta
- Department of Materials Science and Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Xiaofei Zhao
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Anubhav Sarmah
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Huaixuan Cao
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Miladin Radovic
- Department of Materials Science and Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Jodie L. Lutkenhaus
- Department of Materials Science and Engineering, Texas A&M University, College Station, TX 77843, USA
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Micah J. Green
- Department of Materials Science and Engineering, Texas A&M University, College Station, TX 77843, USA
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX 77843, USA
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10
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Gaur SS, Edgehouse KJ, Klemm A, Wei P, Gurkan B, Pentzer EB. Capsules with polyurea shells and ionic liquid cores for
CO
2
capture. JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1002/pol.20210342] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Samanvaya S. Gaur
- Department of Materials Science and Engineering Texas A&M University College Station Texas USA
| | | | - Aidan Klemm
- Department of Chemical and Biomolecular Engineering Case Western Reserve University Cleveland Ohio USA
| | - Peiran Wei
- Department of Materials Science and Engineering Texas A&M University College Station Texas USA
| | - Burcu Gurkan
- Department of Chemical and Biomolecular Engineering Case Western Reserve University Cleveland Ohio USA
| | - Emily B. Pentzer
- Department of Materials Science and Engineering Texas A&M University College Station Texas USA
- Department of Chemistry Texas A&M University College Station Texas USA
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11
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Cao H, Escamilla M, Anas M, Tan Z, Gulati S, Yun J, Arole KD, Lutkenhaus JL, Radovic M, Pentzer EB, Green MJ. Synthesis and Electronic Applications of Particle-Templated Ti 3C 2T z MXene-Polymer Films via Pickering Emulsion Polymerization. ACS APPLIED MATERIALS & INTERFACES 2021; 13:51556-51566. [PMID: 34672540 DOI: 10.1021/acsami.1c16234] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
MXene/polymer composites have gained widespread attention due to their high electrical conductivity and extensive applications, including electromagnetic interference (EMI) shielding, energy storage, and catalysis. However, due to the difficulty of dispersing MXenes in common polymers, the fabrication of MXene/polymer composites with high electrical conductivity and satisfactory EMI shielding properties is challenging, especially at low MXene loadings. Here, we report the fabrication of MXene-armored polymer particles using dispersion polymerization in Pickering emulsions and demonstrate that these composite powders can be used as feedstocks for MXene/polymer composite films with excellent EMI shielding performance. Ti3C2Tz nanosheets are used as the representative MXene, and three different monomers are used to prepare the armored particles. The presence of nanosheets on the particle surface was confirmed by X-ray photoelectron spectroscopy and scanning electron microscopy. Hot pressing the armored particles above Tg of the polymer produced Ti3C2Tz/polymer composite films; the films are electrically conductive because of the network of nanosheets templated by the particle feedstocks. For example, the particle-templated Ti3C2Tz/polystyrene film had an electrical conductivity of 0.011 S/cm with 1.2 wt % of Ti3C2Tz, which resulted in a high radio frequency heating rate of 13-15 °C/s in the range of 135-150 MHz and an EMI shielding effectiveness of ∼21 dB within the X band. This work provides a new approach to fabricate MXene/polymer composite films with a templated electrical network at low MXene loadings.
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Affiliation(s)
- Huaixuan Cao
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Maria Escamilla
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Muhammad Anas
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Zeyi Tan
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Siddhant Gulati
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Junyeong Yun
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Kailash Dhondiram Arole
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Jodie L Lutkenhaus
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843, United States
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Miladin Radovic
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Emily B Pentzer
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Micah J Green
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843, United States
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
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