JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Lei Li,Wen Bin Hong,Shuang Yang,Han Yan,Xiang Ming Chen
NaCl ceramics were prepared by cold sintering at room temperature with the water content varying from 0 to 10 wt%. The relative density of the NaCl ceramics first decreases rapidly from 99.3% to 95.0% with increasing the water content from 0 to 3 wt%, and it decreases slowly to 93.4% with further increasing the water content up to 10 wt%. The decrease in relative density is mainly attributed to the volume increase caused by the evaporation of the residual water in NaCl ceramic body. The dielectric constant exhibits the same tendency as the relative density, while the Qf value increases from 27,600 GHz to 49,600 GHz with increasing the water content from 0 to 4 wt%, and it does not change much for higher water content. The improved Qf value is attributed to the improved microstructure homogeneity that benefits from the fast mass transport of the water-activated dissolution-precipitation mechanism. The results clearly show that the water content should be optimized but not determined arbitrarily or empirically to achieve the good combination of high density, microstructure homogeneity and good properties. To avoid the negative effect of the residual water, NaCl ceramics were also cold-sintered at 120 °C, in which both high relative density (98.8–99.6%) and high Qf value (48,100–56,000 GHz) were obtained.
研究领域:
材料科学
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陶瓷工程
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DOI
高影响因子
ACS Applied Electronic Materials
·
2025
·
IF 4.7
Jifeng Pan,Yunsong Li,Tian Tian,Zilong Tang,Zichao Lian,Nan Ma
The development of advanced humidity sensors is becoming increasingly essential for the progression of various industries, particularly for integration with IoT devices. Consequently, the creation of high-performance humidity sensors is of paramount importance. In this study, we present a highly sensitive humidity sensor based on the ferroelectric oxide BiFeO3, which is further enhanced by the incorporation of the hydrophilic inorganic salt NaCl. By optimizing the NaCl content and the thickness of the sensing film, the 15 wt % NaCl-BiFeO3 sensor with a film thickness of 68 μm demonstrated an exceptional response of 10,073 as the relative humidity was varied from 13 to 86% RH at room temperature, representing a 46.3-fold enhancement compared to pure BiFeO3-based sensors. The sensor also exhibited rapid response and recovery times of 0.27 and 5.73 s, respectively. The excellent humidity sensing performance can be attributed to the increased electrical conductivity, which results from the generation of free ions due to NaCl dissolution in adsorbed water under high humidity conditions. Furthermore, this highly sensitive sensor is well-suited for noncontact applications, such as human respiratory monitoring and contactless control. This work underscores the potential of NaCl-BiFeO3 as a highly promising material system for high-performance humidity sensors in smart sensing applications.
研究领域:
材料科学
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物联网技术
·
传感器技术
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DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2017
·
IF 2.323
Dandan Gao,Dongdong Li,Bin Hu,Wu Li
Solubility isotherms of the ternary NaCl + RbCl + H2O system were elaborately determined at T = (273.15 and 298.15) K by an isothermal equilibrium method, and the results showed that there are only two solubility branches for the solid phase NaCl(cr) and RbCl(cr) at both temperatures. The liquid composition of invariant points at T = (263.15, 323.15, 338.15, and 348.15) K were also determined. The experimental data at T = 298.15 K were reproduced using a Pitzer–Simonson–Clegg activity model by adding a temperature independent ternary mixing parameter. Then, the solid–liquid equilibria in the ternary NaCl + RbCl + H2O system were predicted from the available binary parameters obtained in our previous study and the mixing parameter regressed at 298.15 K in this study. The model was further validated by comparing the predictions with the present data at other temperatures that were not used in parametrization. Finally, the phase diagram of the ternary NaCl + RbCl + H2O system in the temperature range from the lowest eutectic point to 373.15 K was constructed to lay the foundation for equilibria property predictions for more complex Rb-containing systems.
研究领域:
物理化学
·
热力学
·
材料科学
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产品关联
DOI
高影响因子
DESALINATION
·
2016
·
IF 4.412
Pengli Chen,Xiao Ma,Zhaoxiang Zhong,Feng Zhang,Weihong Xing,Yiqun Fan
Removing mixture salts from dye solutions using membrane technology still need to be improved for high dye rejection and low salt rejection. In this work, ceramic membrane with pore size of 1.5 nm presented a satisfactory desalination of dye solutions containing NaCl and Na 2 SO 4 compared with two commercial organic nanofiltration membrane elements (DK and DL). Effect of salt content, salt type, molar ratio of NaCl and Na 2 SO 4 , dye concentration and pH on performance of ceramic membrane for desalination of Eriochrome black T (EBT) were investigated. The results showed that dye rejection decreased by increasing salt content, dye concentration and solution pH. Compared with dye-NaCl solutions, a relative high flux and low rejection of dye were observed when treating dye-Na 2 SO 4 solutions. For the mixture salt-dye solutions, the flux, which was higher than that for the single salt-dye solutions, first increased then decreased with decreasing C NaCl /C Na2SO4 due to the change of structure of cake layer. Supper-molecule aggregates of EBT formed by hydrogen-bond is mainly responsible for the high rejection of EBT (> 99%) at acid conditions. The rejection of NaCl and Na 2 SO 4 was below 20% and 40%, respectively. These promising results demonstrates that the new ceramic membrane has a potential application in dye purification.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
JOURNAL OF CHEMICAL THERMODYNAMICS
·
2016
·
IF 2.196
Yunxue Gao,Shuni Li,Quanguo Zhai,Yucheng Jiang,Mancheng Hu
The (solid + liquid) phase equilibrium of the ternary system (NaCl + RbCl + H 2 O) at T = (288.15, 298.15 and 308.15) K was studied by the method of isothermal solution saturation. Moreover, the density and refractive index of the solution was also determined. The solid phase was studied by the Schreinemaker’s wet residue method and verified by X-ray diffraction. The results show that each of the phase diagrams contains one invariant point, two univariant curves, and three crystallization regions. The crystallization region of NaCl increased obviously with the temperature increasing, while the crystallization regions of RbCl and the mixed crystallization region of (NaCl + RbCl) decreased a little. Furthermore, there are break points at the invariant points for density and refractive index curves.
研究领域:
化学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2017
·
IF 2.323
Yunxue Gao,Shuni Li,Quanguo Zhai,Yucheng Jiang,Mancheng Hu
Complete phase diagrams and physico-chemical properties for the ternary system (CsCl + NaCl + H2O) were determined at T = (298.15, 308.15, and 318.15) K, respectively. The X-ray diffraction method and Schreinemaker’s wet residue method were used to verify the solid phase. The phase diagrams show this ternary system is a complex type. Three crystallization regions were found corresponding to the single salt NaCl, a compound CsCl·2NaCl·2H2O, and a solid solution series [Cs1–x(Na·H2O)x]Cl (x in [Cs1–x(Na·H2O)x]Cl changed from 0 to 0.43 (298.15 K), 0.39 (308.15 K), and 0.36 (318.15 K) at each temperature. With rising temperature, the crystallization area of NaCl increased, but CsCl·2NaCl·2H2O and [Cs1–x(Na·H2O)x]Cl decreased simultaneously. However, density and refractive index increased with increasing CsCl concentration.
研究领域:
化学
·
物理化学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Jinsong Shi,Jianguo Xu,Hongmin Cui,Nanfu Yan,Runhan Yan,Yaqing Weng
Porous carbon is a very promising type of CO 2 adsorbent due to its excellent stability, low cost, and tunable physicochemical properties. In the current work, N-doped hierarchically porous carbon was synthesized with the assistance of NaCl template and KHCO 3 activation. A series of carbons with three dimensional and interconnected micro- meso -macroporous structure were successfully prepared. Effects of synthesis conditions on textural properties and N-doping were analyzed and discussed with details. The carbons also exhibited high surface area (725–2423 m 2 /g) and N content (1.49–7.93 wt%). CO 2 adsorption properties were studied with a combined experimental and theoretical approach. At 25 °C and 1 bar, the carbons exhibited CO 2 uptake up to 4.22 mmol/g and CO 2 /N 2 selectivity up to 25.6. Grand canonical Monte Carlo (GCMC) simulation was employed to further elucidate the different roles played by N-doping and textural properties during CO 2 adsorption. Effects of various N-functionalities located in pores with different sizes on CO 2 adsorption were thus revealed. The present study presents a novel strategy for controlled synthesis of porous carbons, and provides helpful insights into their CO 2 adsorption behaviors.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
·
2025
·
IF 3.5
Jun-Long Mao,Jing-Jing Fu,Min Zhang,Yan-Wei Yuan,Yue-Wen Chen
BACKGROUND Partially replacing NaCl with KCl under ultrasound can improve muscle quality and reduce oxidative degeneration of myofibrillar proteins in semi-dried large yellow croaker ( Larimichthys crocea ). Myosin, the most important protein in myofibrillar protein, plays an important role in muscle quality. Hence, the present study aimed to investigate the effect of replacing NaCl with KCl on the physicochemical properties of myosin derived from large yellow croaker under ultrasound. Furthermore, the application potential of ultrasound to low sodium salt products was evaluated. RESULTS The results showed that ultrasound treatment reduced the aggregation and particle size of myosin. By contrast, at high salt concentrations, myosin oxidation was inhibited and protein aggregation increased. This led to an increase in particle size and a decrease in stability and surface hydrophobicity of myosin. Interestingly, KCl increased myosin solubility and promoted protein unfolding, the excess of which exposed some active sites, leading to oxidative destruction of the proteins. In the present study, the chromophore and surface hydrophobic groups of myosin were exposed as a result of the KCl-mediated unfolding of the α -helices of myosin after the partial replacement of NaCl with KCl. This improved the structural stability of myosin and reduced its oxidative damage. CONCLUSION The findings of the present study show that the presence of NaCl and KCl in the system was more conducive to protecting the key role of myosin in the muscle tissue compared with NaCl alone. Additionally, the study provides insights into the mechanism of K + and Na + action on myosin under ultrasound, along with a theoretical basis for the application of ultrasound in low sodium salt products. © 2025 Society of Chemical Industry.
研究领域:
食品科学
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生物化学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2021
·
IF 8.742
Ben-Qing Huang,Yong-Jian Tang,Zuo-Xiang Zeng,Shuang-Mei Xue,Shan-Qing Li,Yi-Ru Wang,En-Chao Li,Chuyang Y. Tang,Zhen-Liang Xu
Separation performance of nanofiltration (NF) membranes is constrained by the trade-off between permeability and selectivity. Herein, a facile and environmental friendly water activation before microwave heating was performed to improve the performance of NF membranes and overcome this trade-off. The water activation before microwave heating facilitated the hydrolysis of acyl chloride, resulting in a loose polyamide layer with enhanced hydrophilicity and surface charge. The activated NF membrane showed a permeance of 29.9 L m -2 h -1 bar -1 , which is almost 2 times higher than the control. The membrane possesses a Na 2 SO 4 rejection of 96.8% and high selectivity to antibiotics and NaCl. At the meantime, the fouling resistance to model foulants including bovine serum albumin and sodium alginate was significantly enhanced. The water activation before microwave heating is proved to be an adequate strategy for fabricating NF membranes.
研究领域:
环境科学
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材料科学
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化学工程
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2015
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IF 2.711
Damei Lv,Junfei Ou,Mingshan Xue,Fajun Wang
Superhydrophobic surface (SHS) was fabricated on aluminum via surface roughening by NaClO and surface passivation by hexadecyltrimethoxysilane. The long-term durability for storing the sample in air and the chemical stability for contacting the sample with NaCl solution were investigated. The short-term corrosion resistance for immersing the sample in NaCl solution for 1 h was investigated by potentiodynamic polarization, and the long-term corrosion resistance for immersing the sample in NaCl solution for 7 days was investigated by variation analyses on surface wettability, surface morphology, and surface chemistry. All experimental results suggested that the so-obtained SHS possessed good stability and good corrosion resistance under the testing conditions.
研究领域:
材料科学
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腐蚀与防护
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DOI
高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2020
·Vol. 22
·期 32
·17791-17797
·
IF 3.43
Ligang Chen,Guanhua Ren,Liyuan Liu,Pan Guo,Endong Wang,Zhongjie Zhu,Jinrong Yang,Jianxiong Shen,Zongchang Zhang,Lu Zhou,Jianbing Zhang,Bin Yang,Weili Zhang,Yi Gao,Hongwei Zhao,Jiaguang Han
The cooling-induced formation of a hydrate in aqueous NaCl solutions was probed using terahertz time-domain spectroscopy (THz-TDS). It was found that the NaCl hydrate formation is accompanied by the emergence of four new absorption peaks at 1.60, 2.43, 3.34 and 3.78 THz. Combining X-ray diffraction measurements with solid-state based density functional theory (DFT) calculations, we assign the observed terahertz absorption peaks to the vibrational modes of the formed NaCl·2H2O hydrate during cooling. This work shows that THz-TDS based analysis has great potential in studying ionic hydrates and the newly revealed collective vibrational modes could be sensitive indicators to achieve quantitative analysis in phase transitions and lattice dynamics.
研究领域:
物理化学
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材料科学
✓ 已验证
DOI
高影响因子
Advanced Materials Interfaces
·
2023
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IF 5.4
Bingxuan Du,Haichao Li,Conglin Zhang,Qingsong Ji
Carbon nanomaterials have attracted much attention in the field of science and technology for their excellent properties; however, developing a simple, environmentally friendly, and versatile synthesis strategy for the preparation of carbon nanomaterials with novel structures remains a great challenge. Herein, a surfactant @ salt (dodecyltrimethylammonium bromide DTAB @ NaCl) self-assembly strategy for the synthesis of carbon nanomaterials with novel structures, i.e., carbon nanoframes is reported. The synthesis differs from the traditional template method in that it is characterized by the introduction of surfactants for separation and protection, and the salt can be recycled. In addition, the carbon frame size in this system can be adjusted on demand by simply adjusting the concentration of surfactant, thus realizing that the carbon nanoframe size is adjustable in the range of 232.58–322.51 nm. Impressively, the carbon nanoframe has purple, blue, and green PL emission behavior. It is anticipated that this research will provide new insights into the development of novel carbon nanomaterials.
研究领域:
材料科学
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化学工程
·
纳米技术
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）