JOURNAL OF MEMBRANE SCIENCE
·
2020
·
IF 7.183
Yingying Liu,Wentao Yan,Zhi Wang,Huihui Wang,Song Zhao,Jixiao Wang,Peng Zhang,Xingzhong Cao
A novel aqueous solution additive, 1-methylimidazole (1-MI), was applied to prepare aromatic polyamide (PA) reverse osmosis (RO) membranes with excellent performance by interfacial polymerization of trimesoyl chloride (TMC) and m-phenylenediamine. The RO membrane structure and performance were characterized in detail. The results indicated that the addition of 1-MI was beneficial to forming the membrane with a dense and thin PA layer. This is because 1-MI could react with TMC, which is in favor of the formation of back surface structure with more pores. The product generated by 1-MI and TMC was hydrolyzed easily, and then endowed the membrane with more carboxylic acid groups. The membrane desalination performance for feeds with different NaCl concentration was evaluated. The membrane prepared with 1-MI possessed a higher flux and rejection because of the thinner and denser PA layer and more carboxylic acid groups. Considering that the membranes inevitably face chemical cleaning with acid or alkaline solutions in the real processes, the RO membranes were exposed to acidic-alkaline solution, and the results showed that the membrane prepared with 1-MI had good pH stability. This study offers a new route for preparing an excellent-performance RO membrane via using 1-MI as an additive.
研究领域:
材料科学
·
环境工程
✓ 已验证
DOI
高影响因子
SEMICONDUCTOR SCIENCE AND TECHNOLOGY
·
2021
·Vol. 36
·期 12
·125022
·
IF 2.352
Yuchang Liu,Hongjie Liu,Anjie Hu,Yingmei Wei,Wenchao Ou,Xianwang Deng,Shaopeng Wang,Kefu Yu
The quest to develop inexpensive chemical sensing materials that are energy-efficient, portable, and with efficient performance lies at the center of next-generation sensor development. Owing to their low cost, easy preparation, high response, and smooth integration with electronic circuits, metal oxide semiconductors have received particular attention. Yet, metal oxide semiconductor based sensors often suffer from high power consumption due to their high operating temperature, which hinders them from practical applications. To solve this problem, herein, we proposed ultrathin sub-4 nm SnO2 films synthesized by a facile tunable hydrothermal method. Benefiting immensely from its two-dimensional anisotropic nature, the proposed SnO2 ultra-thin film exhibits a large specific area of 94.41 m2 g−1 and possesses surface oxygen vacancies. The obtained sample was practically applied as a gas sensor; the results indicate that the ultra-thin SnO2 film based sensor exhibits the highest sensitivity to triethylamine (19.2 at 100 ppm), outstanding repeatability, and excellent sensing selectivity at a low working temperature of 150 °C.
研究领域:
材料科学
·
化学传感器
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Yuyang Xiao,Xingfeng Lei,Shuyu Xue,Ruhe Lian,Guo Xiong,Xiangze Xin,Dechao Wang,Qiuyu Zhang
Gas barrier membranes with impressive moisture permeability are highly demanded in air or nature gas dehumidification. We report a novel approach using polyetheramine oligomers covalently grafted on the carbon nanotubes (CNTs) to engineer liquid-like CNT nanofluids (CNT NFs), which are incorporated into a polyimide matrix to enhance the gas barrier and moisture permeation properties. Benefiting from the featured liquid-like characteristic of CNT NFs, a strong interfacial compatibility between CNTs and the polyimide matrix is achieved, and thus, the resulting membranes exhibit high heat resistance and desirable mechanical strength as well as remarkable fracture toughness, beneficially to withstanding creep, impact, and stress fatigue in separation applications. Positron annihilation lifetime spectroscopy measurements indicate a significant decrease in fractional free volume within the resulting membranes, leading to greatly enhanced gas barrier properties while almost showing full retention of moisture permeability compared to that of the pristine membrane. For membranes with 10 wt % CNT NFs, the gas transmission rates, respectively, decrease 99.9% for CH4, 94.4% for CO2, 99.2% for N2, and 97.9% for O2 compared with that of the pristine membrane. Most importantly, with the increasing amount of CNT NFs, the hybrid membranes demonstrate a simultaneous increase of barrier performance and permselectivity for H2O/CH4, H2O/N2, H2O/CO2, and H2O/O2. All these results make these membranes potential candidates for high-pressure natural gas or hyperthermal air dehydration.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
ACS Omega
·
2024
·
IF 3.7
Dandan Jiang,Yingzhen Zhang,Xin Qiao,Jun Xiao,Kunming Liu,Juanhua Li,Jinbiao Liu
An iron-catalyzed selective N═S coupling of N-methoxy amides and sulfoxides has been developed and was found to be a highly efficient method for the synthesis of N-acyl sulfoximines. Electron-donating as well as electron-withdrawing groups on the phenyl ring are tolerated, and even sensitive substituents are compatible. The current catalytic transformation was conducted under an air atmosphere and can be easily scaled up to a gram scale with a catalyst loading of only 1 mol %. In this case, both coupling partners are used in their native forms, thus obviating prior functionalization and activation.
研究领域:
有机化学
·
合成化学
✓ 已验证
DOI
PubMed
高影响因子
POLYHEDRON
·
2021
·
IF 3.052
Zhao-Yang Liu,Ruo-Ming Tong,Xin Chen,Yu-Teng Zhang
An amino-functionalized Zr-based metal–organic tetrahedron (denoted as ZrT-1-NH 2 ) was synthesized under solvothermal conditions. In addition, the adsorption performances of ZrT-1-NH 2 for sulfachloropyridazine (SCP) from aqueous solution were investigated. Moreover, the experimental results revealed that ZrT-1-NH 2 has adsorption performance for SCP. The adsorption kinetic data were best fitted with the pseudo second order model. Furthermore, a plausible adsorption mechanism was proposed.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Shufeng Shen,Xiaoqin Shi,Chenxu Li,Hui Guo,Qinghai Long,Shuo Wang,Xin Yin
Nonaqueous amine-based absorbents, particularly liquid biphasic solvents, have recently received increasing attention due to the potential for reducing the energy penalty of CO 2 capture. In this work, a series of glycol ethers were used as cosolvents dissolving primary and secondary alkanolamines. Phase transition behavior, CO 2 absorption and desorption characteristics have been investigated for the nonaqueous 5.0 M amine blends. Different phase behaviors upon CO 2 absorption were discussed and well explained by the polarity change and the solubility parameter interaction distance (SPID) of components and the reaction products. Regeneration energy requirement was also experimentally estimated and compared with the reference aqueous monoethanolamine (MEA). The species in the CO 2 -loaded solution play a central role in regulating phase separation behaviour and CO 2 capture performance. A defined SPID value was recommended to predict the monophasic and the biphasic states. Advanced systems of 2-(methylamino)ethanol (MAE) with diethylene glycol dimethyl ether (DEGDME) as liquid biphasic solvent and MAE with ethylene glycol monomethyl ether (EGME) as single phase solvent were proposed for energy-efficient CO 2 capture. Among the systems investigated, MAE/EGME has the lowest regeneration energy consumption estimated at about 1.75 MJ kg −1 CO 2 captured. The ionic carbonated products of alkanolamines can trigger the phase change behaviour due to their limited solubility in the more hydrophobic and weakly polar DEGDME, resulting in two opposite phases enriched in different components. Benefiting from the high enrichment (>95 %) of CO 2 captured in the lower phase and the large cyclic capacity, MAE/DEGDME biphasic solvent can reduce the energy consumption by 50–59 % compared with aqueous MEA.
研究领域:
化学工程
·
环境科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2020
·
IF 3.871
Long Xu,Sen Liu,Zhe Qiu,Houjian Gong,Haiming Fan,Teng Zhu,Huan Zhang,Mingzhe Dong
The study aims to improve the rheological behaviors and oil recovery of hydrolyzed polyacrylamide (HPAM) at high salinity by introducing nanosilicas . It was found that the combination of hydrophobically associating polyacrylamide (HAHPAM) and cetyl-modified nanoparticles (CMNPs) has a more substantial synergy for improving rheological behaviors of hybrid dispersions at high salinity, comparing with other HPAM/NP hybrids. The CMNPs markedly facilitate the cross-links among clumpy molecular aggregates of HAHPAM and made the hybrids more elastic. At a given HAHPAM concentration, there exists an optimal CMNP concentration at which the adsorption of nanosilicas on the polymer molecular chains is maximized. Under reservoir conditions, the HAHPAM/CMNP hybrid is more efficient than the HAHPAM/NP hybrid for enhanced oil recovery. The oil displacement mechanism of the HAHPAM/CMNP hybrid is attributed to the synergistic thickening and wettability change. The hydrophobic effect between HAHPAM and the CMNPs effectively improves the salt tolerance of the hybrids.
研究领域:
石油工程
·
材料科学
✓ 已验证
DOI
高影响因子
iScience
·
2021
·
IF 5.458
Yuzhang Zhu,Hongzhen Lin,Wangxi Fang,Aqiang Wang,Jichao Sun,Shiling Yuan,Jingye Li,Jian Jin
It is of great importance and practical value to develop a facile and operable surface treatment method of materials with excellent antipollution and antiadhesion property, but still a huge challenge. In this work, a series of pseudo-zwitterions are prepared from electrostatic assembly of cationic polyethyleneimine and anionic phosphonic clusters. These pseudo-zwitterionic assemblies provide a strong hydration through electrostatic interaction with water and in turn create a barrier against oil foulants, leading to a nearly zero crude oil adhesion force. The pseudo-zwitterions-decorated surfaces exhibit exceptional water-cleanable oil-repellent property, even when they are completely dried and without prehydration before fouled by crude oil. While using these pseudo-zwitterions-modified polymeric membranes for separating surfactant stabilized oil-in-water emulsion, less than 10% decline of permeating flux is observed throughout a 2-h continuous separation experiment, showing excellent emulsion separation ability and antipollution performance for high viscous oil.
研究领域:
材料科学
·
表面化学
·
环境工程
✓ 已验证
DOI
PubMed
高影响因子
TRIBOLOGY INTERNATIONAL
·
2022
·
IF 5.62
Shangtao Huang,Binbin Wang,Xueyang Zhao,Shuangjian Li,Xiangchao Liang,Rong Zeng,Wei Li,Xiaojian Wang
With a similar structure as natural cartilage, hydrogels show great potential in repairing cartilage defect. However, achieving high strength and excellent lubrication is still a significant challenge for hydrogels. Herein, we synthesized a series of P(AAm-co-AAc)/Fe 3+ /hydrogenated soy phosphatidylcholine (HSPC) composite hydrogels with high strength and low friction coefficient. By tuning the concentration of Fe 3+ and HSPC, the compressive strength of the composite hydrogels can reach 59.09 MPa, which is higher than that of most current existing hydrogels. Owing to the boundary lubrication and strengthening effect of HSPC, the friction coefficient of the composite hydrogel can be reduced from 0.48 to 0.06. The combination of high compressive strength and low friction under high load makes the hydrogels promising candidates for cartilage defect treatment.
研究领域:
生物材料学
·
医学工程
✓ 已验证
DOI
高影响因子
ELECTROANALYSIS
·
2022
·Vol. 34
·期 11
·1756-1762
·
IF 3.077
Zhang Kaiyue,Li Juan,Xiong Lulu,Sun Wei,Li Ming Chang
A hollow Co 3 O 4 turtle shell-like structure (HS−Co 3 O 4 ) was synthesized from ZIF-67 and further employed for the first time to electrochemically real-time monitor dopamine (DA) released from living cells. X-ray powder diffraction, electron microscopy, X-ray photoelectron spectroscopy, electrochemical methods were used to study its physical and chemical properties and electrocatalytic behaviours. The as-prepared DA HS−Co 3 O 4 sensor accomplishes an outstanding limit of detection (LOD) of 3 nM, a broad linear range of 0.01–360 μM, good stability and high selectivity. It was further used to successfully real-time monitor DA released from living cells, demonstrating its great potential in practical applications in clinic diagnosis and bioscience research. The great sensing enhancement mechanism is investigated, revealing that the unique nanostructure not only provides a high density of active centers, but also more interestingly renders a unique mechanism by creating an atomic match between the adjacent Co ions catalysis centers and the two reaction atomic sites of DA for a fast 2-electron transfer path.
研究领域:
材料科学
·
生物医学工程
·
分析化学
✓ 已验证
DOI
高影响因子
Journal of Water Process Engineering
·
2021
·
IF 5.485
Yujing Zhang,Xiaoqin Nie,Faqin Dong,Ning Pan,Congcong Ding,Chang Liu,Junling Wang,Wencai Cheng,Mingxue Liu,Huichao He,Shiyong Sun,Xue Xia
It is of great significance to develop an adsorbent with high adsorption capacity and excellent resistance to anion and cation interference toward the removal of U(VI). Herein, a novel polyamine-modified polyacrylonitrile-based fiber (PAN PA ) has been synthesized through hydrothermal method , which can validly remove U(VI) from solution. Combined with mesoscopic, spectral characterization and simulation method, the removal behavior and mechanism of U(VI) from high fluorine uranium-containing wastewater by PAN PA are systematically investigated. The results show that, based on the strong coordination principle of polyamine group and UO 2 2+ , PAN PA can selectively remove U(VI) from wastewater. In addition, the q max of 459.27 mg g −1 was more than that of many other adsorbent materials . More importantly, PAN PA is not affected by high concentration of F − , and exhibits higher distribution coefficient (559,900 mL g −1 ) and removal efficiency (99.5%) to U(VI) than other coexisting ions in real wastewater . Furthermore, the column experiment was also implemented to remove U(VI). The results indicate that PAN PA is a promising material to effectively remove U(VI) from real wastewater produced during the fabrication of nuclear fuel elements .
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
MACROMOLECULES
·
2022
·
IF 6.057
Aishuang Liu,Yanbo Yao,Jingwen Yao,Tao Liu
Wrinkling and liquid spreading are ubiquitous phenomena observed in nature and man-made engineering systems. Herein, we unified these two interesting phenomena to manifest a novel dynamic wrinkling phenomenon induced by the spreading of a silicone oil drop on a floating thin film. With the combined experimental validation and verification as well as theoretical formulation, we demonstrated that such a dynamic wrinkling approach can provide a highly valuable platform for providing insightful understandings on the wrinkling behavior through a continuous tracing of the droplet-induced wrinkle patterns in the bendability–confinement morphological phase space, and for offering a simple and inexpensive metrology on measuring the elastic moduli of nanofilms, such as the spin-coated polystyrene thin films and the as-synthesized polydopamine thin films as demonstrated in this work. It is expected that the droplet spreading induced dynamic wrinkling of a thin film can be used not only as a simple and reliable metrology for elastic modulus measurement of thin films but also as an experimental playground for exploring the scientific curiosity of elastocapillarity and the related wrinkling behavior and for developing more valuable applications in the field of soft materials, nanotechnology, and biology.
研究领域:
材料科学
·
纳米技术
·
软物质物理
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）