JOURNAL OF HAZARDOUS MATERIALS
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2021
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IF 10.588
Shiyan Sun,Xuefeng Sha,Jie Liang,Guang Yang,Xin Hu,Ziyang He,Meiying Liu,Naigen Zhou,Xiaoyong Zhang,Yen Wei
The adsorption applications of MXene-based adsorbents have intensively investigated recently. However, the performance of MXene-based adsorbents has been largely limited owing to their lack of functional groups and adsorptive sites. Therefore, surface functionalization of MXene is an important route to achieve better performance for environmental adsorption. Herein, polyionic liquid functionalized MXene (named as MXene-PIL) was prepared through a multi-component reaction and adsorptive removal of iodine by MXene-PIL was also evaluated. The successful generation of PIL on MXene was confirmed by a series of characterization measurements. Furthermore, the effects of contact time, iodine concentration, environmental temperature and other factors on the adsorption performance of MXene-PIL were investigated. Adsorption kinetic analysis including pseudo-first-order dynamic model, pseudo-second-order dynamic model and Weber-Morris model, adsorption thermodynamic analysis such as Langmuir and Freundlich models and Van’t Hoff equation were used for further analysis the adsorption behavior of iodine by MXene-PIL. We demonstrated that the adsorption capacity could be as high as about 170 mg/g, which is obviously larger than the unmodified MXene and most of other reported adsorbents. Taken together, a simple strategy has been developed for in-situ generation of PIL on MXene and the resultant composites show potential application for adsorptive removal of iodine.
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
PubMed
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
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2021
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IF 6.165
Guang Yang,Yu Wu,Meiying Liu,Jie Liang,Qiang Huang,Jibo Dou,Yuanqing Wen,Fengjie Deng,Xiaoyong Zhang,Yen Wei
Graphene oxide (GO) and its related composites have been extensively studied for various applications due to their unique two-dimensional structure and promising performance. In this study, we reported for the first time that polyimidazole-modified GO composites (abbreviated as PILGO) could be successfully fabricated through the combination of thiol-ene click and Radziszewski reactions. Functionalized GO composites were characterized by a series of techniques, such as nuclear magnetic resonance hydrogen spectroscopy, Fourier transform infrared spectroscopy, transmission electron microscopy, X-ray photoelectron spectroscopy and thermogravimetric analysis, and the adsorption behaviour of these PILGO composites towards Congo red (CR, an anionic dye) was investigated in detail. We demonstrated that the adsorption capacity of PILGO was significantly improved as compared with that of pristine GO. The maximum uptake performance of PILGO was up to 191.9 mg g −1 with a near-saturation state achieved in the first 5 min. The adsorption equilibrium data were better fitted through the pseudo-second-order model, while the adsorption isotherm data were better correlated with the Freundlich and Tempkin models. The adsorption affinity between CR and PILGO was positively related to the solution pH. The adsorption mechanism between CR molecules and composite material was further put forward, and it included electrostatic attraction, π-π stacking and hydrogen bond interactions. Competitive adsorption and cycling experiments further demonstrated that PILGO composites can be used as clean, efficient and novel adsorbents in wastewater treatment.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
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2019
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IF 4.182
Yinpeng Wang,Junqi Nie,Cuifen Lu,Feiyi Wang,Chao Ma,Zuxing Chen,Guichun Yang
Polyimidazolium salts are a class of important catalysts for CO 2 cycloaddition with epoxides. However, initiator like azoisobutyronitrile or metal catalyst is often required to promote their synthetic process. Therefore, developing a clean route to synthesize polyimidazolium salts is still highly desirable. In this study, three crosslinked polymers PIM1, PIM2 and PIM3 containing imidazolium unit were constructed via nucleophilic substitution reaction of 1,3,5,7-tetrakis (4-(imidazole-1-yl)phenyl)adamantane and benzyl bromides. The structure and composition of the polymers were characterized by CP/MAS 13 C NMR, FT-IR and XPS. Different porosities were observed for PIMs, and PIM2 has a larger BET surface are than that of PIM1 and PIM3. Accordingly, the polymeric imidazolium salt PIM2 shows superior activity for catalyzing cyclic addition of CO 2 with a variety of epoxides without any solvent or cocatalyst, giving the cyclic carbonates in excellent yields. In addition, PIM2 shows high stability and easy recyclability.
研究领域:
化学
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材料科学
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
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2025
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IF 8.2
Jingjing Chen,Shuqiang Xiong,Na Li,Junrong Yu,Yan Wang,Zuming Hu
Liquid metals (LMs) with fluidity and conductivity are widely applied in flexible electronics. However, the surface patterning of liquid metals (LMs) is restricted by the low adhesion effect on the substrates because of the intrinsic high surface tension. In this study, a versatile adhesive conductive poly(imidazole-urea)/eutectic Ga75.5In24.5 alloy (PIU/EGaIn) ink is proposed by wrapping the EGaIn particles with PIU through metal coordination to realize substrate-independent direct writing. The adhesion of PIU guarantees that the PIU/EGaIn ink can be written smoothly on different substrates, ranging from flexible to rigid and plane to camber. Complex patterns can also be stamped on the substrate by transfer printing. The maximum conductivity of the handwriting trace can reach as high as 1.3 × 106 S/m due to the highly efficient stability of EGaIn particles with a low content of residue PIU. The written circuit demonstrates high stability and maintains constant conductivity after 500 cycles of deformations (folding, bending, and stretching), thanks to the good adhesion effect of PIU with substrates. In addition, the resistance touch sensor was patterned to detect finger contact as a demonstration of potential application. The PIU/EGaIn ink waste can be recycled using an alkaline solution owing to the intrinsic degradability of PIU. This strategy offers a new choice for universal adhesive conductive ink that is suitable for environmentally friendly flexible electronics.
研究领域:
材料科学
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柔性电子学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2025
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IF 2.8
Jingshi Liang,Bo Liu,Ye Wang,Delai Jiao,Xiaolin Shi,Zhiming Pan,Chunling Zhang
Ionic liquids have aroused considerable attention in the fields of polymer and materials science due to their designability and distinctive qualities. Epoxy resin (EP) with antimicrobial and stain-resistant properties is important for the service life of the material and for eliminating potential health hazards. In this study, a series of main-chain polyimidazolium ionic liquids (PIMILs) differing in the alkyl chain length of cation sizes (propyl, butyl, hexyl, octyl, decyl, dodecyl, 3,6-dioxaoctyl, and 4,7,10-trioxatridecyl) were synthesized by the Debus–Radziszewski reaction, and used as curing agents for EPs. The results of the curing conditions of their corresponding EPs revealed the regularity in the curing conditions dependent mainly on alkyl chain length. Meanwhile, the influence of the chloride anion and cation size on thermal stability, the glass transition temperature ( T g ), and thermomechanical properties of the epoxy composites were discussed, Finally, the water contact angles of thermosets ranged from 78.1° to 104.5°, and the thermosets could effectively kill multiple strains of bacteria and remove the biofilm.
研究领域:
材料科学
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高分子化学
✓ 已验证
产品关联
DOI
高影响因子
Small
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2025
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IF 12.1
Bingqian Zhou,Yihao Fan,Chenyang Kou,Lei Zhang,Dezhong Yin,Baoliang Zhang
Poly-imidazolium salt (PIS) combines the merits of abundant nitrogen sources, excellent chemical and thermal stability and adjustable morphology, making it a promising precursor for Nitrogen-doped (N-doped) carbon material. Herein, multidimensional PIS are synthesized via a facile solvent-induced strategy. Then, PIS are converted into nanofibers, nanoribbons and microspheres composed of N-doped carbon. The effects of microstructure, N-doping degree and defects on microwave absorption properties are investigated in depth. As a result, the 2D nanoribbon CN-2-700 features a high specific surface area, significant N-doping and moderate conductivity, thereby allowing it to sustain perfect conductive networks and the optimal impedance matching at a low filler content (8 wt.%). CN-2-700 demonstrates a minimum reflection loss (RL min ) of −50.15 dB and an effective absorption bandwidth (EAB) of 7.06 GHz (10.44–17.50 GHz). Overall, this work offers a novel path for developing multi-dimensional electromagnetic microwave absorbing materials with a simple process and remarkable performance.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
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2023
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IF 11.2
Wenqi Song,Liwei Qian,Zongcheng Miao,Valentin Nica,Yuzhen Zhao,Zemin He,Yanfang Zhu,Jianjing Gao,Xiaorui Li
With the increasing requirements for sustainable development and environmental protection, the design and development of bio-adsorbent based on the widely sourced cellulose have attracted widespread attention. In this study, a polymeric imidazolium satls (PIMS) functionalized cellulose foam (CF@PIMS) was conveniently fabricated. It was then employed to efficiently remove ciprofloxacin (CIP). Three imidazolium salts containing phenyl groups that can lead to multiple interactions with CIP were elaborately designed and then screened through a combination of molecular simulation and removal experiments to acquire the most significant binding ability of CF@PIMS. Besides, the CF@PIMS retained the well-defined 3D network structure as well as high porosity (90.3 %) and total intrusion volume (6.05 mL g −1 ) as the original cellulose foam (CF). Therefore, the adsorption capacity of CF@PIMS reached an astonishing value of 736.9 mg g −1 , nearly 10 times that of the CF. Furthermore, the pH-affected and ionic strength-affected adsorption experiments confirmed that the non-electrostatic interaction took on a critical significance in the adsorption. The reusability experiments showed that the recovery efficiency of CF@PIMS was higher than 75 % after 10 adsorption cycles. Thus, a high-potential method was proposed in terms of the design and preparation of functionalized bio-adsorbent to remove waste matters from samples of the environment.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
Molecular Catalysis
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2017
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IF 0
Weiqiang Zhang,Liangyi Peng,Chunyan Deng,Yingxue Zhang,Hao Qian
Polymers containing the structure of N-heterocyclic carbenes (NHCs) have attracted much interest due to their superior complexing ability to metal ions and good recyclability, which make them promising candidates as solid supporters. Herein, we developed an easy method to synthesize polyimidazolium chloride salt (PImCl) via one-step method in mild conditions. After PImCl was chelated with palladium chloride in 3-chloropyridine, this NHC-Pd polymer was employed as the solid catalyst for Suzuki reactions of aryl bromides and phenylboronic acid. The catalytic activity of the NHC-Pd polymer was high for many different substrates. Moreover, the Suzuki reaction of 4-bromoanisole with phenylboronic acid could be catalyzed by this NHC-Pd polymer in mild conditions. Furthermore, this solid catalyst could be easily isolated by centrifugal separation. After several recycling runs, the catalytic activity decreased little. Compared with the conventional methods, this method was much simpler and more efficient, which showed enormous potential in preparing new heterogeneous supporter of porous polyimidazolium chloride salt.
研究领域:
有机化学
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催化化学
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产品关联
DOI
EUROPEAN POLYMER JOURNAL
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2025
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IF 6.3
Jingshi Liang,Bo Liu,Zifei Zhao,Xiaolin Shi,Chunling Zhang
Ionic elastomers possess relatively good mechanical property and environmental stability. In this work, metal ions were introduced into main-chain polyimidazolium ionic liquids (PIMILs) to enhance the mechanical properties of PIMIL-based elastomers (PIEs) by utilizing metal coordination bonds and cation–π interaction. The tensile strengths of PIEs could be increased from 0.28 MPa to 5.93 MPa. The influences of metal ion species/ratios and PIMIL ratios on the elastomer properties were investigated. Results demonstrated that the elastomers had good thermal stability, solvent resistance, and humidity responsiveness. When PIMIL containing benzene rings and the content of metal ions increased, the glass transition temperature ( T g ) of PIEs significantly increased, and PIEs could realize the transformation from elastomers to plastics.
研究领域:
高分子材料科学
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功能材料
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软物质物理
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产品关联
DOI
高影响因子
JOURNAL OF CHROMATOGRAPHY A
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2019
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IF 3.858
Na Wang,Xuesheng Zhou,Bo Cui
In this work, a polymeric imidazolium-embedded octadecyl ionic liquid (poly(1-vinyl-3-octadecylimidazolium naphthalene sulfonate))-grafted silica (poly(C 18 VIm + NapSO 3 − )@SiO 2 ) sorbent was prepared and applied as a solid-phase extraction (SPE) sorbent in extraction of flavonoids. The synthesized poly(C 18 VIm + NapSO 3 − )@SiO 2 sorbent was characterized by X-ray photoelectron spectrogram (XPS) and fourier transform infrared spectroscopy (FT-IR). The thermodynamic and kinetic adsorption models of the prepared poly(C 18 VIm + NapSO 3 − )@SiO 2 sorbent towards flavonoids were discussed by nonlinear fitting adsorption curve and the results indicated the thermodynamic adsorption model in this work was tended to be Freundlich model rather than Langmuir one and the pseudo-second order model could be used to describe the dynamic adsorption process. In addition, the adsorption amounts indicated the sorbent has satisfactory extraction capabities towards flavonoids. For investigating the influence of independent variables and their interactions on the extraction efficiency, a Box-Behnken design was used for optimizing three greatly influential parameters after performing single-factor experiments. The interaction energies between flavonoids and two ionic liquids were calculated to understand the adsorption mechanism. Under the optimal conditions, a method used for determining flavonoids was developed by combining SPE technique with high performance liquid chromatography (HPLC), and the developed method exhibited low limits of detection (0.25–0.4 μg L -1 ), good linearities with correlation coefficients (R 2 ) in the range of 0.9951–0.9996 and satisfactory recoveries ranging from 83.6% to 114.1%, which confirmed the proposed method could be successfully used to determine trace flavonoids in real samples.
研究领域:
分析化学
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材料科学
✓ 已验证
DOI
PubMed
高影响因子
BIOSENSORS & BIOELECTRONICS
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2014
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IF 6.451
Xiaofang Liu,Ling Zhang,Shaping Wei,Shihong Chen,Xin Ou,Qiyi Lu
In the present work, a novel strategy based on overoxidized polyimidazole (PImox) and graphene oxide (GO) copolymer modified electrode was proposed for the simultaneous determination of ascorbic acid (AA), dopamine (DA), uric acid (UA), guanine (G) and adenine (A). The copolymer was characterized by the scanning electron microscopy (SEM), atomic force microscopy (AFM), Fourier transform infrared (FT-IR), X-ray photoelectron spectroscopy (XPS) and electrochemical impedance spectroscopy (EIS). Due to the synergistic effects between PImox and GO, the proposed electrode exhibited excellent electrochemical catalytic activities and high selectivity and sensitivity toward the oxidation of AA, DA, UA, G and A. The peak separations between AA and DA, AA and UA, UA and G, and G and A were 140 mV, 200 mV, 380 mV and 300 mV, respectively. The linear response ranges for AA, DA, UA, G and A were 75–2275 μM, 12–278 μM, 3.6–249.6 μM, 3.3–103.3 μM and 9.6–215 μM, respectively, and corresponding detection limits were 18 μM, 0.63 μM, 0.59 μM, 0.48 μM and 1.28 μM.
研究领域:
分析化学
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生物医学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2021
·
IF 10.588
Guang Yang,Xin Hu,Jie Liang,Qiang Huang,Jibo Dou,Jianwen Tian,Fengjie Deng,Meiying Liu,Xiaoyong Zhang,Yen Wei
In this work, a novel imidazoles-MXene hybrid composite, namely polyimidazoles chain overlaying on the surface of MXene (Ti 3 C 2 @IMIZ), was prepared by a simple method. Through this strategy, imidazoles can be in situ growth on the surface of MXenes via a facile multicomponent reaction using chitosan as a renewable reactant. Based on the characterization results, we demonstrated that a thin layer imidazoles with an ordered chain structure was embedded on the surface of Ti 3 C 2 , which resulted in the formation of a novel imidazoles-MXene hybrid composite. The adsorption performance of Ti 3 C 2 @IMIZ for removal environmental pollutants was evaluated using heavy metal ions of Cr(Ⅵ) as adsorbate. Detailed adsorption characteristics of Ti 3 C 2 @IMIZ including operational factors, adsorption kinetics and isotherms models were investigated. XPS analysis showed that Cr(VI) was converted to Cr(III) with low toxicity during the adsorption process . The adsorption of Cr(VI) and reduction of Cr(VI) to Cr(III) contribute to elimination of Cr(VI) species. The adsorption behavior and process analysis show that the adsorption mechanism is mainly physical adsorption through electrostatic interaction. The excellent reproducibility suggests that Ti 3 C 2 @IMIZ may be a potential candidate for remove of Cr(Ⅵ) in actual sewage treatment .
研究领域:
材料科学
·
环境科学
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）