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Kaur G, Kaur H, Mittal SK. Electrochemical sensor based on ion-selective membrane of silica/polyaniline nano-composites for selective determination of uranyl ions. TALANTA OPEN 2022. [DOI: 10.1016/j.talo.2022.100158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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Zhang M, Ling H, Wang T, Jiang Y, Song G, Zhao W, Zhao L, Cheng T, Xie Y, Guo Y, Zhao W, Yuan L, Meng A, Li Z. An Equivalent Substitute Strategy for Constructing 3D Ordered Porous Carbon Foams and Their Electromagnetic Attenuation Mechanism. NANO-MICRO LETTERS 2022; 14:157. [PMID: 35916976 PMCID: PMC9346049 DOI: 10.1007/s40820-022-00900-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 07/03/2022] [Indexed: 06/09/2023]
Abstract
Three-dimensional (3D) ordered porous carbon is generally believed to be a promising electromagnetic wave (EMW) absorbing material. However, most research works targeted performance improvement of 3D ordered porous carbon, and the specific attenuation mechanism is still ambiguous. Therefore, in this work, a novel ultra-light egg-derived porous carbon foam (EDCF) structure has been successfully constructed by a simple carbonization combined with the silica microsphere template-etching process. Based on an equivalent substitute strategy, the influence of pore volume and specific surface area on the electromagnetic parameters and EMW absorption properties of the EDCF products was confirmed respectively by adjusting the addition content and diameter of silica microspheres. As a primary attenuation mode, the dielectric loss originates from the comprehensive effect of conduction loss and polarization loss in S-band and C band, and the value is dominated by polarization loss in X band and Ku band, which is obviously greater than that of conduction loss. Furthermore, in all samples, the largest effective absorption bandwidth of EDCF-3 is 7.12 GHz under the thickness of 2.13 mm with the filling content of approximately 5 wt%, covering the whole Ku band. Meanwhile, the EDCF-7 sample with optimized pore volume and specific surface area achieves minimum reflection loss (RLmin) of - 58.08 dB at 16.86 GHz while the thickness is 1.27 mm. The outstanding research results not only provide a novel insight into enhancement of EMW absorption properties but also clarify the dominant dissipation mechanism for the porous carbon-based absorber from the perspective of objective experiments.
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Affiliation(s)
- Meng Zhang
- College of Materials Science and Engineering, College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao, 266061, People's Republic of China
| | - Hailong Ling
- College of Materials Science and Engineering, College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao, 266061, People's Republic of China
| | - Ting Wang
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, College of Chemical Engineering in Gaomi Campus, Qingdao University of Science and Technology, Qingdao, 266042, People's Republic of China
| | - Yingjing Jiang
- College of Materials Science and Engineering, College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao, 266061, People's Republic of China
| | - Guanying Song
- College of Materials Science and Engineering, College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao, 266061, People's Republic of China
| | - Wen Zhao
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, College of Chemical Engineering in Gaomi Campus, Qingdao University of Science and Technology, Qingdao, 266042, People's Republic of China
| | - Laibin Zhao
- College of Materials Science and Engineering, College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao, 266061, People's Republic of China
| | - Tingting Cheng
- College of Materials Science and Engineering, College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao, 266061, People's Republic of China
| | - Yuxin Xie
- College of Materials Science and Engineering, College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao, 266061, People's Republic of China
| | - Yuying Guo
- College of Materials Science and Engineering, College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao, 266061, People's Republic of China
| | - Wenxin Zhao
- College of Materials Science and Engineering, College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao, 266061, People's Republic of China
| | - Liying Yuan
- College of Materials Science and Engineering, College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao, 266061, People's Republic of China
| | - Alan Meng
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, College of Chemical Engineering in Gaomi Campus, Qingdao University of Science and Technology, Qingdao, 266042, People's Republic of China
| | - Zhenjiang Li
- College of Materials Science and Engineering, College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao, 266061, People's Republic of China.
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Tanweer MS, Iqbal Z, Alam M. Experimental Insights into Mesoporous Polyaniline-Based Nanocomposites for Anionic and Cationic Dye Removal. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:8837-8853. [PMID: 35816402 DOI: 10.1021/acs.langmuir.2c00889] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
This work presents the preparation of inorganic-organic hybrid nanocomposites, namely three-dimensional polyaniline (Pani)/activated silica gel (ASG) (3D Pani@ASG), their characterization, and in removing application as a potential adsorbent for cationic brilliant green (BG), crystal violet (CV), and anionic Congo red (CR), and methyl orange (MO) dyes. Pani@ASG nanocomposites have been prepared by the in situ polymerization method and characterized using various techniques such as Fourier transform infrared (FTIR), X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) with selected area electron diffraction, thermogravimetric analysis with derivative thermogravimetry, zeta potential analyses, and Brunauer-Emmett-Teller (BET). The scanning electron microscopy (SEM) study confirms the average particle size of the Pani@ASG nanocomposite is in the range of 5 nm. FESEM, TEM, FTIR, and XRD analysis proved the successful decoration of ASG over Pani. The BET result of Pani@ASG shows a mesoporous nature with a pore diameter of less than 3 nm and a surface area of 423.90 m2 g-1. Both SEM and TEM analyses show the proportional distribution of ASG over Pani's surface. The adsorption trend of BG and MO on the studied materials at pH 7 was found as follows: Pani@ASG > Pani > ASG. The highest sorption capacities of MO and BG on Pani@ASG were 161.29 and 136.98 mg/g (T = 298.15 K, and Pani@ASG dose: 0.04 g for MO and 0.06 g for BG), which were greater compared with bare Pani and bare ASG, respectively. The interaction mechanism behind the adsorption of BG and MO dyes onto the Pani@ASG nanocomposite includes electrostatic interaction, π-π interaction, and hydrogen bonding. The mechanistic pathway and the interactions between the targeted dyes and Pani@ASG were further studied using adsorption isotherm, adsorption kinetics, and thermodynamics.
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Affiliation(s)
- Mohd Saquib Tanweer
- Environmental Science Research Lab, Department of Applied Sciences and Humanities, Faculty of Engineering and Technology, Jamia Millia Islamia, New Delhi 110025, India
| | - Zafar Iqbal
- Environmental Science Research Lab, Department of Applied Sciences and Humanities, Faculty of Engineering and Technology, Jamia Millia Islamia, New Delhi 110025, India
| | - Masood Alam
- Environmental Science Research Lab, Department of Applied Sciences and Humanities, Faculty of Engineering and Technology, Jamia Millia Islamia, New Delhi 110025, India
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Beak K, Choi M, Kim DH, Yu Y, Theerthagiri J, Al-Mohaimeed AM, Kim Y, Jung HJ, Choi MY. Silane-treated BaTiO 3 ceramic powders for multilayer ceramic capacitor with enhanced dielectric properties. CHEMOSPHERE 2022; 286:131734. [PMID: 34352545 DOI: 10.1016/j.chemosphere.2021.131734] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 07/21/2021] [Accepted: 07/28/2021] [Indexed: 06/13/2023]
Abstract
Silane/ceramic combination provides the composites with several advantages from the advancements of new ceramic composite materials with good thermal conductivity, high mechanical and dielectric properties have wide significant applications in electrical and electronic industries. In this study, to enhance the dispersibility of dielectric barium titanate (BaTiO3) ceramic powder and additives for the fabrication of multilayer ceramic capacitors (MLCCs), surface treatment of the precursor of ceramic powder was performed using silane coupling agents. Dielectric ceramic sheets fabricated from ceramic powders that had been surface-treated with different amounts of N-[3-(trimethoxysilyl)propyl]aniline (TMSPA) which increased the surface gloss. In particular, the dielectric properties of the multilayer ceramic sheet fabricated by stacking sheets from the TMSPA-treated ceramic powder sintering at 1200 °C, it was confirmed that the dielectric constant increased from 881 to 2382 and the dielectric loss dropped from 1.96 to 1.34% with utilization of the TMSPA treatment. The physical and dielectric properties of the TMSPA-treated multilayer ceramic sheet were also determined by Fourier-transform infrared spectroscopy, X-ray diffraction, field-emission scanning electron microscopy, glossmetry, and electrochemical impedance analysis. The results revealed that the TMSPA-modified BaTiO3 surfaces considerably increased the dielectric property of the fabricated nanocomposite.
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Affiliation(s)
- Kyungki Beak
- Convergence Division, Korea Institute of Ceramic Engineering & Technology, 101, Soho-Ro, Jinju, 52851, Republic of Korea; School of Materials Science and Engineering, Pusan National University, Busan, 46241, Republic of Korea
| | - Moonhee Choi
- Convergence Division, Korea Institute of Ceramic Engineering & Technology, 101, Soho-Ro, Jinju, 52851, Republic of Korea
| | - Dong Hyun Kim
- Convergence Division, Korea Institute of Ceramic Engineering & Technology, 101, Soho-Ro, Jinju, 52851, Republic of Korea
| | - Yiseul Yu
- Core-Facility Center for Photochemistry & Nanomaterials, Department of Chemistry (BK21 FOUR), Research Institute of Natural Sciences, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Jayaraman Theerthagiri
- Core-Facility Center for Photochemistry & Nanomaterials, Department of Chemistry (BK21 FOUR), Research Institute of Natural Sciences, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Amal M Al-Mohaimeed
- Department of Chemistry, College of Science, King Saud University, P.O. Box 22452, Riyadh, 11495, Saudi Arabia
| | - Yangdo Kim
- School of Materials Science and Engineering, Pusan National University, Busan, 46241, Republic of Korea.
| | - Hyeon Jin Jung
- Convergence Division, Korea Institute of Ceramic Engineering & Technology, 101, Soho-Ro, Jinju, 52851, Republic of Korea.
| | - Myong Yong Choi
- Core-Facility Center for Photochemistry & Nanomaterials, Department of Chemistry (BK21 FOUR), Research Institute of Natural Sciences, Gyeongsang National University, Jinju, 52828, Republic of Korea.
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Fahmy A, Abou-Saied M, Helaly H, El-Dessoki F, Mohamed TA. Novel PVA/Methoxytrimethylsilane elastic composite membranes: preparation, characterization and DFT computation. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130173] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Liu P, Niu J, Wang D. Honeycomb-like mesoporous all-carbon graphene-based fiber for flexible supercapacitor application: Effect of spacers. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126291] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Li Y, Liu C, Lv X, Sun S. A highly sensitive strain sensor based on a silica@polyaniline core-shell particle reinforced hydrogel with excellent flexibility, stretchability, toughness and conductivity. SOFT MATTER 2021; 17:2142-2150. [PMID: 33439186 DOI: 10.1039/d0sm01998d] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Hydrogel-based flexible strain sensors for personal health monitoring and human-machine interaction have attracted wide interest among researchers. In this paper, hydrophobic association and nanocomposite conductive hydrogels were successfully prepared by introducing polyaniline coated silica (SiO2@PANI) core-shell particles into an acrylamide-lauryl methacrylate (P(AM/LMA)) copolymer matrix. The hydrophobic interaction between the SiO2@PANI core-shell particles and the hydrophobic LMA in the P(AM/LMA) chains induced the hydrogels with outstanding mechanical properties. Furthermore, the polyaniline on the SiO2 surface and the inorganic salt formed a conductive network, which synergistically enhanced the conductivity of the hydrogels. The obtained hydrogels integrate high tensile strength (1398 kPa), ultra-stretchability (>1000%), wonderful strain sensitivity (gauge factor = 10.407 at 100-1100% strain), quick response (300 ms), and excellent durability (>300 cycles) due to the hydrophobic association and nanocomposite effect. The prepared SiO2@PANI-P(AM/LMA) hydrogel shows high stress sensitivity to detect human movements and displays a broad application prospect in flexible strain-sensor field.
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Affiliation(s)
- Youqiang Li
- Engineering Research Center of Synthetic Resin and Special Fiber, Ministry of Education, Changchun University of Technology, Changchun 130012, China.
| | - Chuang Liu
- Engineering Research Center of Synthetic Resin and Special Fiber, Ministry of Education, Changchun University of Technology, Changchun 130012, China.
| | - Xue Lv
- Engineering Research Center of Synthetic Resin and Special Fiber, Ministry of Education, Changchun University of Technology, Changchun 130012, China.
| | - Shulin Sun
- Engineering Research Center of Synthetic Resin and Special Fiber, Ministry of Education, Changchun University of Technology, Changchun 130012, China.
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Surface modified layered double hydroxide/polyaniline nanocomposites: Synthesis, characterization and Pb2+ removal. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.124438] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Jang HS, Kwon SH, Lee JH, Choi HJ. Facile fabrication of core-shell typed silica/poly(diphenylamine) composite microparticles and their electro-response. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.121851] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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