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Xiao Y, Chen G, Shi B, Chang Q, Zhang L, Wu H. Multi-Interface Electromagnetic Wave Absorbing Material Based on Liquid Marble Microstructures Anchored to SEBS. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2400756. [PMID: 38709225 DOI: 10.1002/smll.202400756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 03/18/2024] [Indexed: 05/07/2024]
Abstract
The direct application of liquid marbles in electromagnetic wave (EMW) absorption is challenging due to their poor stability, susceptibility to gravitational collapse, and shaping difficulties. To address this issue, a novel strategy is proposed to incorporate liquid marble microstructures (NaCl/nano-SiO2) encapsulated in organic phases (Octadecane) into the rubber-matrix (SEBS) using the ultrasound-assisted emulsion blending method. The resulting NaCl/SiO2/Octadecane microstructures anchored to SEBS offer a substantial solid-liquid interface consisting of NaCl solution and SiO2. When subjected to an alternating electromagnetic (EM) field, the water molecules and polysorbate within SiO2 exhibit heightened responsiveness to the EM field, and the movement of Na+ and Cl- within these microstructures leads to their accumulation at the solid-liquid interface, creating an asymmetric ion distribution. This phenomenon facilitates enhanced interfacial polarization, thereby contributing to the material's EMW absorption properties. Notably, the latex with 16 wt% SEBS (E-3), exhibiting a surface morphology similar to human cell tissues, achieves complete absorption of X-band (fE = 4.20 GHz, RLmin = -33.87 dB). Moreover, the latex demonstrates light density (0.78 g cm-3) and environmental stability. This study not only highlights the predominant loss mechanism in rubber-based wave-absorbing materials but also provides valuable insights into the design of multifunctional wave-absorbing materials.
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Affiliation(s)
- Yuting Xiao
- MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Geng Chen
- MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Bin Shi
- MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Qing Chang
- MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Limin Zhang
- MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Hongjing Wu
- MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China
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Zhang L, Zhang A, Zhou S, Wang Q, Wang W, Ma H, Zhou C. Real-time online monitoring technology for sweeping frequency ultrasound (SFU) assisted extraction of amur grape (Vitis amurensis) seed oil. ULTRASONICS SONOCHEMISTRY 2023; 100:106621. [PMID: 37776716 PMCID: PMC10561120 DOI: 10.1016/j.ultsonch.2023.106621] [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: 06/23/2023] [Revised: 09/09/2023] [Accepted: 09/22/2023] [Indexed: 10/02/2023]
Abstract
Sweeping frequency ultrasound (SFU) was used to assist extraction of amur grape (Vitis amurensis) seed (AGS) oil. Extraction conditions and physicochemical properties were optimized and analyzed under different extraction methods. Meanwhile, frequency and time domains were online monitored during SFU assisted extraction of AGS oil. PVDF piezoelectric sensor was used in time domain, and the hydrophone in frequency domain, so as to obtain the time-voltage waveform, signal power, spectrum distribution and other visual models. Physical models of the spatial peak acoustic intensity, charge quantity and work done by electric field force under different ultrasonic conditions were derived. The mathematical model between the work done by electric field force and the spatial peak acoustic intensity under the working state of PVDF piezoelectric sensor was constructed. Results show that the content of AGS oil by SFU assisted extraction was higher than that by organic extraction. Furthermore, the optimal single-frequency was 40 kHz and dual-frequency was 28/33 kHz, and SFU extraction time of 30 min was suitable with higher oil yield of 16.70 % and 16.94 %, respectively. In addition, the selection and combination of SFU also affected the oil oxidation degree. The peak voltage, spatial peak acoustic intensity, signal power and work of electric field force at 28/33 kHz were all higher than those at 40 kHz.
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Affiliation(s)
- Lei Zhang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; Institute of Food Physical Processing, Jiangsu University, Zhenjiang 212013, China
| | - Ao Zhang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Shanshan Zhou
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Qianqian Wang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Wen Wang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Haile Ma
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; Institute of Food Physical Processing, Jiangsu University, Zhenjiang 212013, China
| | - Cunshan Zhou
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; Institute of Food Physical Processing, Jiangsu University, Zhenjiang 212013, China.
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Song P, Hu B, Zhao D, Fu J, Su X, Feng W, Yu K, Liu S, Zhang J, Chen C. Modulating the Asymmetric Atomic Interface of Copper Single Atoms for Efficient CO 2 Electroreduction. ACS NANO 2023; 17:4619-4628. [PMID: 36815694 DOI: 10.1021/acsnano.2c10701] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Cu single-atom catalysts (Cu SACs) have been considered as promising catalysts for efficient electrocatalytic CO2 reduction reactions (ECRRs). However, the reports on Cu SACs with an asymmetric atomic interface to obtain CO are few. Herein, we rationally designed two Cu SACs with different asymmetric atomic interfaces to explore their catalytic performance. The catalyst of CuN3O/C delivers high ECRR selectivity with an FECO value of above 90% in a wide potential window from -0.5 to -0.9 V vs RHE (in particular, 96% at -0.8 V), while CuCO3/C delivers poor selectivity for CO production with a maximum FECO value of only 20.0% at -0.5 V vs RHE. Besides, CuN3O/C exhibited a large turnover frequency (TOF) up to 2782.6 h-1 at -0.9 V vs RHE, which is much better than the maximum 4.8 h-1 of CuCO3/C. Density functional theory (DFT) results demonstrate that the CuN3O site needs a lower Gibbs free energy than CuCO3 in the rate-determining step of CO desorption, leading to the outstanding performance of CuN3O/C on the process of ECRR-to-CO. This work provides an efficient strategy to improve the selectivity and activity of the ECRR via regulating asymmetric atomic interfaces of SACs by adjusting the coordination atoms.
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Affiliation(s)
- Pengyu Song
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, People's Republic of China
| | - Botao Hu
- Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology, Beijing 100094, People's Republic of China
| | - Di Zhao
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, People's Republic of China
| | - Jiantao Fu
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, People's Republic of China
| | - Xiaoran Su
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, People's Republic of China
| | - Wuyi Feng
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, People's Republic of China
| | - Ke Yu
- Engineering Research Center of Advanced Rare Earth Materials, Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China
| | - Shoujie Liu
- Engineering Research Center of Advanced Rare Earth Materials, Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China
| | - Jiatao Zhang
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, People's Republic of China
| | - Chen Chen
- Engineering Research Center of Advanced Rare Earth Materials, Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China
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Xu N, Yu Y, Zhai W, Wang J, Wei B. A high-temperature acoustic field measurement and analysis system for determining cavitation intensity in ultrasonically solidified metallic alloys. ULTRASONICS SONOCHEMISTRY 2023; 94:106343. [PMID: 36858007 PMCID: PMC9989687 DOI: 10.1016/j.ultsonch.2023.106343] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 02/06/2023] [Accepted: 02/20/2023] [Indexed: 06/18/2023]
Abstract
A high-temperature acoustic field measurement and analysis system (HTAFS) was self-designed and developed to achieve real-time acoustic field analysis and quantitative cavitation characterization within high-temperature liquids. The acoustic signal was acquired by a high-temperature resistant waveguide and calibrated by separate compensation of line and continuous spectra to eliminate frequency offsets. Moreover, a new method was proposed to derive from the continuous-spectrum sound intensity and line-spectrum sound intensity in the frequency band above 1.5 times the fundamental frequency to characterize the intensity of transient cavitation and stable cavitation. The acoustic field characteristics within solidifying liquid Al-7 %Si alloy were successfully determined by this system. With the increase of ultrasound amplitude, the acoustic pressure in the alloy melt increased to be stable, the transient cavitation intensity first rose and then declined, and the stable cavitation intensity remained unchanged. Combined with the structural evolution of the primary α(Al) phase, the transient cavitation intensity was determined to be the dominant factor for the ultrasound-induced grain refinement effect.
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Affiliation(s)
- Nanxuan Xu
- School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an 710129, People's Republic of China
| | - Yang Yu
- School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710129, People's Republic of China
| | - Wei Zhai
- School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an 710129, People's Republic of China
| | - Jianyuan Wang
- School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an 710129, People's Republic of China.
| | - Bingbo Wei
- School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an 710129, People's Republic of China
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Shao B, Chen F, Wang J, Zhai W. Cavitation Regulated Sonochemical Synthesis of Flexible Self-Supported CuO@PDA/CC Electrode for Highly Sensitive Glucose Sensor. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Wang C, Fan W, Li Z, Xiong J, Zhang W, Wang Z. Sonochemistry-assisted photocontrolled atom transfer radical polymerization enabled by manganese carbonyl. Polym Chem 2022. [DOI: 10.1039/d2py00682k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Sonochemistry-assisted photocontrolled atom transfer radical polymerization (SAP-ATRP) is developed to circumvent the problem caused by the low penetration depth of light.
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Affiliation(s)
- Chen Wang
- Frontiers Science Center for Flexible Electronics & Xi'an Institute of Biomedical Materials and Engineering (IBME), Northwestern Polytechnical University, Xi'an 710072, China
| | - Wenru Fan
- Frontiers Science Center for Flexible Electronics & Xi'an Institute of Biomedical Materials and Engineering (IBME), Northwestern Polytechnical University, Xi'an 710072, China
| | - Zexuan Li
- Frontiers Science Center for Flexible Electronics & Xi'an Institute of Biomedical Materials and Engineering (IBME), Northwestern Polytechnical University, Xi'an 710072, China
| | - Jiaqiang Xiong
- Department of Obstetrics and Gynecology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Wei Zhang
- Department of Obstetrics and Gynecology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Zhenhua Wang
- Frontiers Science Center for Flexible Electronics & Xi'an Institute of Biomedical Materials and Engineering (IBME), Northwestern Polytechnical University, Xi'an 710072, China
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Chen F, Dong C, Chen C, Yin WD, Zhai W, Ma XY, Wei B. Nitrogen-aeration tuned ultrasonic synthesis of SiO 2@PNIPAm nanoparticles and preparation of temperature responsive Pickering emulsion. ULTRASONICS SONOCHEMISTRY 2019; 58:104705. [PMID: 31554146 DOI: 10.1016/j.ultsonch.2019.104705] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 07/01/2019] [Accepted: 07/22/2019] [Indexed: 05/22/2023]
Abstract
Ultrasonic synthesis has shown great potential applications in preparing varieties of nanostructured materials. However, fabrication of nanomaterials with tunable structures and desirable properties is still challenging because of the instability and nonuniform distribution of cavitation effect in liquid phase. In this study, a novel aeration tuned ultrasonic synthesis approach is proposed for optimizing the cavitation effect in both time and space scales and fabricating SiO2@PNIPAm NPs. By alternation of ultrasonication and N2 aeration, more and more gas bubbles are formed in the reaction liquid, and the collapse of those bubbles is further enhanced by the reactants of solid SiO2 and intermediate functionalized SiO2 NPs. As a result, SiO2@PNIPAm NPs with various grafting ratios are successfully synthesized simply by changing the number of ultrasonic synthesis cycle. The SiO2@PNIPAm NPs are subsequently used as stabilizer to form Pickering emulsions with different temperature response. This work provides a potential facile sonochemical synthesis method with high efficiency in obtaining inorganic/organic NPs of well determined structures.
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Affiliation(s)
- F Chen
- Key Laboratory of Materials Physics and Chemistry under Extraordinary Conditions, Ministry of Education, Northwestern Polytechnical University, Xi'an 710072, PR China.
| | - C Dong
- Key Laboratory of Materials Physics and Chemistry under Extraordinary Conditions, Ministry of Education, Northwestern Polytechnical University, Xi'an 710072, PR China
| | - C Chen
- Key Laboratory of Materials Physics and Chemistry under Extraordinary Conditions, Ministry of Education, Northwestern Polytechnical University, Xi'an 710072, PR China
| | - W D Yin
- Key Laboratory of Materials Physics and Chemistry under Extraordinary Conditions, Ministry of Education, Northwestern Polytechnical University, Xi'an 710072, PR China
| | - W Zhai
- Key Laboratory of Materials Physics and Chemistry under Extraordinary Conditions, Ministry of Education, Northwestern Polytechnical University, Xi'an 710072, PR China.
| | - X Y Ma
- Key Laboratory of Materials Physics and Chemistry under Extraordinary Conditions, Ministry of Education, Northwestern Polytechnical University, Xi'an 710072, PR China
| | - B Wei
- Key Laboratory of Materials Physics and Chemistry under Extraordinary Conditions, Ministry of Education, Northwestern Polytechnical University, Xi'an 710072, PR China
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Zhao P, Ni M, Chen C, Zhou Z, Li X, Li C, Xie Y, Fei J. Stimuli-enabled switch-like paracetamol electrochemical sensor based on thermosensitive polymer and MWCNTs-GQDs composite nanomaterial. NANOSCALE 2019; 11:7394-7403. [PMID: 30938724 DOI: 10.1039/c8nr09434a] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A temperature-controlled switchable electrochemical sensor was constructed based on a composite film consisting of thermosensitive block polymer poly(styrene-b-(N-isopropylacrylamide)-b-styrene) (PS-PNIPAm-PS), carboxylated multi-walled carbon nanotubes (MWCNTs-COOH) and amino-functionalized graphene quantum dots (N-GQDs). The prepared sensor showed good temperature sensitivity and reversibility in sensing paracetamol. In the low temperature environment, the polymer stretched to bury the electroactive sites of the carbon nanocomposite, and the paracetamol could not pass through the polymer to achieve electronic exchange, representing the "closed" state. Conversely, in the high temperature environment, the polymer shrank to expose the electroactive sites and enlarge background currents, the paracetamol was able to undergo the redox reaction normally and generate the response current, representing the "on" state. In addition, the sensor had a wide detection range (0.1 to 7.0 μM and 7.0 to 103.0 μM) and a low LOD of 66 nM for paracetamol. This switch-like sensor provided a novel idea for the application of thermosensitive polymers.
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Affiliation(s)
- Pengcheng Zhao
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, People's Republic of China.
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