Desalination and Water Treatment
·
2024
·
IF 1
Linli Tan,Na Han,Longfei Zhang,Zhenyu Cui,Wei Li,Xingxiang Zhang,Jun Cai
ABSTRACT In this study, a melt processable poly(acrylonitrile-co-methyl acrylate)(P(AN-MA)) copolymer was used as membrane matrix, caprolactam (CPL) and glyceryl triacetate (GTA) were used as an eco-friendly mixed diluent. P(AN-MA) membranes with inter-connected sponge structure and porous surface were successfully fabricated via thermally induced phase separation (TIPS). The optimum ratio of CPL/GTA in the mixed diluent was 1:1 wt.%. Even though the concentration of P(AN-MA) was up to 25 wt.%, the surface of membrane still exhibited microporous structure. When the concentration of P(AN-MA) was 15 wt.%, the membrane formed in 20 °C air bath showed the highest water flux of 6802 L/m 2 h. With the increasing of copolymer content or cooling rate, the pore size decreased. In addition, all of the P(AN-MA) membranes exhibited a rejection to carbon ink more than 90 wt.%. The average pore size of the membranes was less than 270.5 nm, and the tensile strength was more than 2.8 MPa. It is anticipated that the facile and green technology TIPS will bring the P(AN-MA) membrane a step closer for practical applications, including clean-up of oil spills, waste water treatment, fuel purification, and separation of commercially relevant emulsions.
研究领域:
材料科学
·
环境工程
·
膜技术
✓ 已验证
DOI
高影响因子
Battery Energy
·
2023
·Vol. 2
·期 3
·20220049
·
IF 0
Zelin Liu,Shu Zhang,Qian Zhou,Yidong Zhang,Dong Lv,Yanghuan Shen,Xiangnan Fu,Xinyi Wang,Shiyu Luo,Yun Zheng,Yu Peng,Jingchao Chai,Zhihong Liu,Guanglei Cui
Quasi solid-state composite polymer electrolytes have generated much interest due to their high ionic conductivity and stable interfacial compatibility with electrodes. However, they suffer from the balance of liquid plasticizer content and ionic conductivity to retard potential safety issues. In this paper, a polyvinylene carbonate (PVCA)-based quasi solid-state composite polymer electrolyte for ambient-temperature lithium-ion battery is proposed, wherein succinonitrile (SN) serves as the multifunctional component to increase the ionic conductivity. The study indicates that SN can plasticize the polymer electrolyte, coordinate with lithium-ion, and modulate the molecular weight of the polymer. The fabricated PVCA–SN polymer electrolyte delivers an ionic conductivity up to 4.5 × 10 –4 S/cm at 25°C. The assembled lithium-ion battery based on PVCA electrolyte demonstrates an excellent rate performance and high-capacity retention at ambient temperature. The proposition of PVCA-based quasi solid-state composite polymer electrolyte provides a resultful strategy for high-performance rechargeable lithium batteries.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
Sustainable Energy & Fuels
·
2023
·Vol. 8
·期 2
·358-368
·
IF 5.6
Hai Lu,Peichun Wang,Yitian Ma,Meng Liu,Linqing Chang,Rui Feng,Shuliang Luo,Zhiyun Zhang,Yi Wang,Yan Yuan
In this study, quasi-solid polymer electrolytes incorporating an ionic liquid (ILQSEs) fabricated in different organic solvents via a thermally-initiated polymerization strategy were investigated for flexible supercapacitors (SCs). It was found that low-viscous acetonitrile (AN) with a strongly-polar nitrile group was remained in the polymer matrix, which favored a higher ionic conductivity, wider electrochemical window, and better thermal stability of the ILQSE compared to its propylene carbonate (PC) counterpart. Moreover, the in situ polymerized quasi-solid electrolyte achieved close contact with the porous carbon electrode, accompanied by the favorable permeation of the IL into the electrode for enhancing the ion-transport kinetics and interface stability. Consequently, the as-assembled SC with the AN-based ILQSE delivered a high specific energy and specific power, excellent cycle stability, and reliable safety.
研究领域:
材料科学
·
电化学
·
高分子化学
·
能源存储
·
纳米科技
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2019
·Vol. 137
·期 15
·48558
·
IF 2.188
Yingzhe Li,Zhuo Li,Yang Gao,Lin Li,Yihan Yang
The weak interaction between the basalt fiber (BF) and acrylonitrile-butadiene rubber (NBR) weakens the BFs' effects on improving the tribological performances of the NBR composites. To solve this problem, (3-aminopropyl)triethoxysilane (APTES) was introduced via mixing into the matrix or grafting on the BF surface, respectively. The characteristics, mechanical, and tribological properties of the composites were evaluated, and the effects of the APTES and its introduction methods on the tribological properties were the main focus. The APTES mixed in the rubber matrix decreased the friction coefficient (COF) of the NBR-based composites under both dry friction and water-lubricated conditions. Especially, the APTES hydrolysis under water-lubricated condition was conducive to the formation of the water film and thus dramatically decreased the COF. The COF of the BF0-A3 and the BF12-A3 were 51% and 30% lower than that of the BF0-A0 and the BF12-A0 under water lubrication, respectively. The APTES grafted on the BF surface increased the wear resistance of the BF/NBR composites attributed to the improvement of the interaction between the BFs and the NBR matrix. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020 , 137 , 48558.
研究领域:
材料科学
·
摩擦学
✓ 已验证
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2022
·
IF 10.53
Wenyan Li,Yumei Li,Xinggui Wen,Yakun Teng,Jing Wang,Tianyi Yang,Xiang Li,Lijuan Li,Ce Wang
High-performance and low-cost hemodialysis membranes are urgently needed by patients suffering from end-stage renal disease. Here, we designed a flexible multifunctional Zr-MOF anchored polyacrylonitrile (PAN) nanofiber membrane (UAPNFM), which has good adsorption, dialysis, and regeneration ability. A novel adhesive layer modification method was used to make UIO-66-(COOH) 2 nanocrystals grow in-situ on the composite nanofibers . The UIO-66-(COOH) 2 nanocrystals were uniformly and stably anchored on the nanofibers with the content of 54.99 wt%. The obtained UAPNFM has the capability to effectively remove uremic toxins with excellent retain protein rate. The Langmuir isotherm and pseudo-second-order kinetic model can be applied to better describe the adsorption process . The maximum adsorption capacity of UAPNFM for creatinine reached 168.63 mg/g. After 4 h of simulate dialysis, the clearance rate of creatinine was 82.48% and the protein retention rate of bovine serum albumin (BSA) by the UAPNFM was 93.09%. In addition, after four cycles, the removal efficiency for creatinine still remained at 82.31%. The results show that the UAPNFM has good regenerability. Moreover, the composite nanofiber membrane exhibited satisfactory blood compatibility. Therefore, this unique flexible Zr-MOF anchored polymer composite nanofiber membrane with an outstanding creatinine removal performance provides a new opportunity for cost reduction for clinical hemodialysis.
研究领域:
生物医学工程
·
材料科学
·
肾脏病学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Zijin Yang,Hongfang Song,Jiaxin Chen,Kui Lin,Qiuchan Cai,Tong Li,Donghui Zhao,Ming Liu,Xianying Qin,Feiyu Kang,Baohua Li
Cyclized polyacrylonitrile (cPAN) with decently flexible, elastic, and conductive properties is a promising substrate or binder material for flexible devices. However, it is infeasible to accommodate the large volume expansion and contribute the exceptional rate capability of silicon anodes in lithium-ion batteries only counting on the limited elasticity and conductivity of cPAN. Herein, we report a robust silicon/carbon-cPAN-graphene (SC-CP-G) composite membrane with excellent flexibility based on a multifunctional structure design in multiple dimensions, which can be used as a free-standing integrated anode for lithium ion batteries. In this integrated electrode, silicon nanoparticles are encapsulated in porous carbon with in situ formed confined space, and the silicon/carbon particles are further embedded in cPAN nanofibers, which are inextricably interwoven with a reduced graphene oxide film, forming an interpenetrating network architecture. The unique hierarchical and functional structure design greatly improves the mechanical performance, cycling stability, and capacity accessibility of silicon electrodes, delivering a specific capacity of 1847 mA h g–1 at 2 A g–1 and a capacity retention of 87% after 150 cycles.
研究领域:
材料科学
·
能源存储
·
纳米技术
✓ 已验证
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2021
·
IF 4.098
Ying Fang,Yuanyuan Meng,Chunming Yuan,Chunhui Du,Kun-Peng Wang,Shaojin Chen,Zhi-Qiang Hu
Organic fluorescent molecules with π-conjugated system have shown great importance in numerous applications including bioimaging and optoelectronics. Planar aggregation-induced emissive (AIE) organic compounds with efficient solid-state luminescence are rarely developed and urgently needed in various applications. In this work, highly planar 4-styrylbenzonitrile derivatives have been synthesized. Most of these compounds show strong AIE properties with hundred-fold fluorescent enhancement. Moreover, these molecules are deep blue emissive in solid state, exhibiting good to excellent fluorescence quantum efficiency. The single crystal analysis shows that adjacent molecules could form special J-type aggregation. The intramolecular rotations are efficiently restricted by various noncovalent interactions. These molecular arrangements could be essential for the observed strong emission in aggregated and solid state. This work has paved a new path to efficient AIE-active organic emitters with highly planar conformations from 4-styrylbenzonitrile structure.
研究领域:
有机化学
·
材料科学
·
光电子学
✓ 已验证
DOI
高影响因子
Journal of Food Measurement and Characterization
·
2024
·Vol. 18
·期 4
·2561-2572
·
IF 2.9
Liu Junwei,Wu Yuqing,Liu Chenchen,Cai Yan,Zhang Rui,Lu Yang
Based on the new hapten of fipronil, an indirect competitive enzyme-linked immunosorbent assay (ic-ELISA) and time-resolved fluorescent immunochromatographic assay (TRFICA) for the determination of fipronil were developed. The sensitivity (IC 50 ) of the ic-ELISA method was 2.33 ± 0.14 ng mL −1 (n = 3), and the limit of detection (LOD) (IC 20 ) was 0.27 ± 0.02 ng mL −1 (n = 3). The cross-reaction rates of the three fipronil metabolites were all higher than 66.7%, and those of the three analogs were no more than 0.05%. The TRFICA was optimized with a handheld reader. The LOD was 0.862 ng mL −1 (n = 3). In this study, the pretreatment methods of samples such as Chinese cabbage, spinach, apple and egg, were explored. Methanol and acetonitrile were used to extract different food samples and the diluents were optimized. Three concentration levels in the spiked food samples were detected by the two methods. The range of recovery was 88.65–116.32% for ic-ELISA and 95.48–112.61% for TRFICA. In this study, the accuracy of the two methods was also judged by testing commercial quality control samples. The results showed that the accuracy was 83.75%–113.33% for ic-ELISA and 98.33–107.13% for TRFICA.
研究领域:
分析化学
·
食品安全检测
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Zhujun Huang,Zhan Lai,Dongying Zhu,Haiyan Wang,Chenxi Zhao,Guihua Ruan,Fuyou Du
The electrospun graphene oxide/MIL-101(Fe)/poly(acrylonitrile- co -maleic acid) nanofibers (E-spun GO/MIL-101(Fe)/PANCMA NFs) were fabricated by a facile electrospinning method and used as integrated photocatalytic adsorbents (IPAs) to remove dye pollutant from water samples. Compared with E-spun GO/PANCMA and E-spun MIL-101(Fe)/PANCMA NFs, the fabricated E-spun GO/MIL-101(Fe)/PANCMA NFs exhibited higher adsorption ability and excellent photocatalytic activity towards a model pollutant Rhodamine B (RhB). Under the optimized conditions, the as-prepared IPAs achieved almost complete adsorption of RhB within 15 min with the maximum adsorption capacity of 10.46 mg/g. Under visible-light irradiation, 93.7% of RhB in 20 mL water sample was degraded within 20 min, and the degradation kinetics of RhB fitted well with the first-order kinetic model. In addition, LC-MS analysis of the RhB degradation products confirmed the degradation pathways, and the generated •OH radicals played important roles in the degradation process. Importantly, the E-spun GO/MIL-101(Fe)/PANCMA NFs exhibited good reusability and could be reused for consecutive 20 cycles, which make them promising candidate materials in the field of industrial applications and environmental remediation.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Yan Yuan,Bin Wang,Kesi Xue,Yitian Ma,Xuyi Liu,Xiuping Peng,Manbo Liu,Hai Lu
Solid polymer electrolyte (SPE) is quite an attractive candidate for constructing high-voltage Li metal batteries (LMBs) with high energy density and excellent safety. However, sim ultaneous achievement of high-voltage stability against the cathode and good compatibility with the Li anode remains challenging for the current SPE technology. Herein, a dual-layered solid electrolyte (DLSE) consisting of an oxidation-resistant poly(acrylonitrile) (PAN) layer facing a high-potential cathode and a reduction-compatible poly(vinylidene fluoride) (PVDF) layer incorporated by Li6.4La3Zr1.4Ta0.6O12 (LLZTO) nanoparticles and an ionic liquid plasticizer in contact with a Li anode was fabricated. The uniquely designed DLSE holds favorable overall properties in ionic conductivity, Li+ transference number, and mechanical strength. Moreover, the combined advantages of two polymer electrolyte layers greatly address the interface issues on both the cathode and anode. Consequently, the high-voltage LMBs employing the DLSE exhibit excellent room-temperature performances including high rate capacity and long cycle life.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
ACS Omega
·
2019
·
IF 2.584
Qian He,Pucha Zhou,Jian Hao,Chunxiang Lu,Yaodong Liu
In this study, we systematically investigated the phase separation behaviors of polyacrylonitrile (PAN)/alkali lignin (AL)/dimethyl sulfoxide (DMSO) systems and found that the addition of AL causes phase separation and the systems form sea (PAN)/island (AL) types of structures. Interestingly, the AL-rich domains are very stable even after a long time of storage up to 15 days. Additionally, how the phase separation affected the solution rheology, the coagulation process and PAN cyclization were explored. The addition of AL in PAN/DMSO solutions changes the solution viscosity and gelation behaviors. Also, the existence of AL-rich domains accelerates the coagulation rate of the PAN solution in water. Because AL degrades at a lower temperature than PAN, it reduces the PAN cyclization temperature but leads to a higher cyclization activation energy, which could be caused by their different initiation mechanisms. These results would be useful to understand how the addition of AL affects the PAN solution structures, solution rheology, solution coagulation behaviors, and PAN stabilization reactions.
研究领域:
材料科学
·
化学工程
·
高分子化学
✓ 已验证
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2019
·
IF 7.015
Shengyang Zhou,Yali Zhao,Jifu Zheng,Suobo Zhang
A novel polymer of intrinsic microporosity , acyl chloride-functionalized polymer of intrinsic microporosity (PIM-COCl), was obtained by hydrolysis under alkaline conditions and acylation in thionyl chloride of PIM-1. PIM-COCl is soluble in common organic solvents , and it is used for the first time for organic solvent nanofiltration (OSN). The acyl chloride groups in PIM-COCl can be further cross-linked with an amine-functionalized polyacrylonitrile (APAN) ultrafiltration membrane to form an interconnected layer, which shrinks pore size and provides better structural stability and selectivity. The PIM-COCl composite membranes exhibit high rejection and alcohol flux during OSN. Compared with the reported PIM OSN membranes , [email protected] exhibits higher rejection for crystal violet (408 g mol −1 , over 94%) in ethanol and several times higher alcohol flux. The membrane shows outstanding stability in ethanol for 14 days. PIM provides a microporous structure, while the interconnected layer maintains this structure in organic solvents via hydrogen bonding , electrostatic interactions and covalent cross-linking. Other PIMs can readily undergo acyl chloride functionalization, which provides them with high reactivity towards amine groups to form stable interconnected layers. This work offers new strategies for the design and preparation of high performance OSN membranes .
研究领域:
高分子材料科学
·
膜分离技术
·
纳米过滤
·
有机溶剂处理
·
功能化聚合物
·
化学稳定性
·
材料化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）