POLYMER
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2022
·
IF 4.432
Yu-Lin Hong,Jian Sun,Hong-Wei Yang,Chang Wang,Yun Liu,Zhi-Wei Tan,Cheng-Mei Liu
Nitrile-rich polymers have found applications in carbon fibre, functional materials and rubber industry, though nitrile-rich polyelectrolytes have seldom been reported before. Here we present a nitrile-rich reactive phosphonium-based polyelectrolyte (PVBzTCPC) synthesized by the RAFT polymerization of 4-vinylbenzyl-tris(2-cyanoethyl)phosphonium chloride (VBzTCPC), a CN-rich phosphonium monomer prepared from tris(2-cyanoethyl)phosphine (TCP) and 4-vinylbenzyl chloride. The RAFT polymerization behaviour of the monomer was studied and it was found that the polymerization of monomer proceeded in a controlled/living manner. PVBzTCPC underwent the Wittig reaction and vinyl groups were introduced into the polymer chain as polymerizable pendant groups. Post-polymerization modifications of PVBzTCPC through the nitrile group proceeded successfully and the modified polymers were also phosphonium-based polyelectrolytes. PVBzTCPC showed a high tendency to form an undissolved polyelectrolyte complex with sodium perfluorooctanoate in aqueous solution, which provided a possible way of removing this persistent organic pollutant from water. The DMF solution of CN-rich PVBzTCPC showed LCST-type (lower critical solution temperature) phase transition without adding any foreign salts over 100 °C, and a possible mechanism of LCST transition was proposed.
研究领域:
材料科学
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化学工程
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMISTRY OF MATERIALS
·
2024
·
IF 7.2
Bin Yu,Songxue Bai,Zhenglin Jia,Haitao Tang,Yong Liu,Hailin Liu,Qianqian Lin
Organic–inorganic hybrid metal halides have recently emerged as promising candidates for X-ray imaging, benefiting from their low-cost, high X-ray attenuation coefficient, and high light yield. However, achieving transparent scintillators remains extremely challenging, which is required for high-resolution X-ray imaging in medical and industrial detection. Glassy materials typically have high optical transparency, and more importantly, they can be easily processed into different shapes and scaled up proportionally for large-scale production. Here, large-area, flexible, and transparent scintillators are developed that have ideal optical properties such as high emissivity and low self-absorption. The obtained glassy scintillators exhibit a high transmittance of 90% in the range 450–800 nm, which is very promising for X-ray imaging. A high spatial resolution of 22.2 lp·mm–1 and a low detection limit of 48.39 nGyair·s–1 were achieved based on the optimized perovskite glass scintillators. Additionally, the phosphonium-based scintillators exhibit remarkable stability under continuous X-ray illumination. The melt-quenching approach is also suitable for upscaling with excellent reproducibility, which addresses the critical issues of perovskite scintillators facing commercialization.
研究领域:
材料科学
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医学影像
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光学
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
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2017
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IF 5.951
Chenyun Zhang,Bingwei Xin,Zhucong Xi,Baohua Zhang,Zhuoyu Li,Hong Zhang,Zhonghao Li,Jingcheng Hao
Employing phosphonium-based ionic liquid, tetrabutylphosphonium chloride [P4444]Cl as novel phosphorus source and reaction medium, a facile approach for fabricating nanostructured Ni2P and Ni12P5 was developed upon microwave heating in 1–2 min or conventional heating at 350 °C for 3 h. In a microwave-driven approach, controlling counteranions of various nickel salts could conveniently tune the phase of as-synthesized nickel phosphides. Ni(acac)2 and Ni(OAc)2·4H2O as Ni source could yield Ni2P nanoparticles, while NiCl2·6H2O and NiSO4·7H2O offered Ni12P5 nanocrystals. The synthesized products were characterized by X-ray powder diffraction, X-ray photoelectron spectroscopy, and transmission electron microscopy. Their electrocatalytic behavior toward hydrogen evolution reaction in acidic medium was investigated. The as-synthesized Ni2P nanoparticles presented more excellent catalytic efficiency than Ni12P5. Ni2P nanoparticles from Ni(acac)2 require overpotentials of only 102 mV to reach 10 mA cm–2 with a small Tafel slope of 46 mV dec–1, showing its best activity among those tested catalysts. The present novel ionic liquid-mediated strategy for the synthesis of nickel phosphide provides the remarkable advantage of operating in very short time by microwave heating, which is of particular interest from the viewpoint of energy-saving, fast synthesis, and easy operation.
研究领域:
材料科学
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化学工程
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能源科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of CO2 Utilization
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2023
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IF 7.7
Yuanyuan Cui,Xiaokang Wang,Li Dong,Yifan Liu,Songsong Chen,Junping Zhang,Xiangping Zhang
Carbon dioxide (CO 2 ) conversion into carbonates is one of the important ways to reduce carbon emissions. In this study, several phosphonium-based functional deep eutectic solvents (DESs) were prepared as catalysts for the synthesis of cyclic carbonates under mild conditions. The research showed that under mild conditions (60 °C, 0.8 MPa, 4 h, and 3.5 mol% catalyst loading), 1-ethylamine-3-butylphosphine bromide−diethylene glycol ([P 4,4,4,2 NH 2 ][Br]-DEG) DES catalyst can achieve 96% propylene carbonate (PC) yield. In addition, the DES catalyst can be recovered by simple solvent extraction, and the PC yield does not decrease significantly after five cycles. Finally, in situ FT-IR and density functional theory (DFT) were used to provide a potential reaction mechanism for the cycloaddition reaction. Mechanism studies show that synergistic catalysis between quaternary phosphine ionic liquids (ILs) and ethylene glycol (EG)/DEG promotes CO 2 conversion to cyclic carbonate.
研究领域:
化学工程
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
Sustainability
·
2023
·Vol. 15
·期 4
·3103
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IF 3.9
Lei Guo,Yue Huang,Yundong Wu,Wei Shi,Faheem Abbas,Yuanhua Lin,Riadh Marzouki,Xingwen Zheng
The corrosion inhibition performance of a quaternary phosphonium-based ionic liquid, i.e., hexadecyltriphenylphosphonium bromide (HPP), on mild steel in 1 M HCl solution was investigated by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization (PDP) methods. The surface characterization of mild steel was examined by scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDS). The results revealed that the inhibition efficiency increases with its increasing concentration, and it can reach up to 99.1% at the concentration of 0.07 mM HPP. PDP data showed that the absorption of HPP conformed to Langmuir adsorption, which served as a mixed-type inhibitor, involving chemisorption and physisorption. SEM analysis confirmed the formation of barrier film on the metal surface, inhibiting the acid attack. Moreover, density functional theory (DFT) calculations and molecular dynamics (MD) simulations were conducted to elucidate the adsorption mechanism of inhibitor molecules on the mild steel surface. A match between the experimental and theoretical findings was evidenced.
研究领域:
材料科学
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电化学
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理论化学
✓ 已验证
产品关联
DOI
高影响因子
GREEN CHEMISTRY
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2017
·Vol. 19
·期 9
·2184-2193
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IF 9.125
Ying Liu,Weiguo Cheng,Yanqiang Zhang,Jian Sun,Suojiang Zhang
Phosphonium-based polymeric ionic liquids (PILs) have been prepared in a controlled way by using a microfluidic technique within an improved membrane microdevice. Using this method, the average diameter sizes of the particles could be tuned from 6.4 to 375 nm through varying the dispersed phase flow rates from 1.0 to 7.0 mL min−1. The nanoparticles were characterized by FTIR, SEM, HRTEM, EDS, TGA and ICP, and their catalytic properties were estimated in the cycloaddition of CO2 with epoxides. It was found they could deliver good to excellent yields with selectivities of more than 99%. 1-Bromoacrylic acid-decorated nanoparticles (NPILs-BPA) were especially effective. Additionally, the activity displayed obvious size-dependence, increasing for the smaller particles, and the particles were stable when recycled seven times, retaining their catalytic activity and selectivity. Meanwhile, the ability of NPILs-BPA to provide carboxylic acid groups and act as a hydrogen bonding donor to activate the ring-opening of epoxides was tested by in situ FTIR. This work provides a continuous, simple method for the preparation of PILs with controlled nanosizes, and offers the potential for scale-up and throughput in industrial applications.
研究领域:
化学工程
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催化化学
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材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF SEPARATION SCIENCE
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2021
·Vol. 44
·期 7
·1529-1536
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IF 3.645
Zilin Meng,Xin Li,Kexin Qiao,Haozhe Zeng,Xiaoyan Cui,Zikai Liu,Ziwei Ju,Runhua Lu,Haixiang Gao,Wenfeng Zhou
In this study, a novel method using a phosphonium-based deep eutectic solvent coupled with vortex-assisted liquid–liquid microextraction was investigated for the enrichment and separation of five benzoylurea insecticides in olive oil. The experimental factors affecting the extraction efficiency, including the extractant type, deep eutectic solvent volume, extraction time, and extraction mode, were optimized. Under optimal conditions, good linearity was observed for all target analytes, with correlation coefficients ( r ) ranging from 0.9971 to 0.9998; the limits of detection were in the range of 1.5 to 7.5 μg/L, and the recoveries of analytes using the proposed method ranged between 66.9 and 111.0%. The simple, rapid, and effective method was successfully applied for detecting target analytes in olive oil sample.
研究领域:
分析化学
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食品科学
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）