TALANTA
·
2019
·
IF 4.916
Qijun Wu,Jiaqi He,Hu Meng,Yu Wang,Yu Zhang,Hui Li,Liang Feng
Monitoring of copper(II) ion is critical for water safety. Herein, a solid phase extraction (SPE) column filled with home-made sulfonated PS-DVB microspheres was adopted to eliminate interference from other co-existing ions. Meanwhile, 1-(2-pyridylazo)-2-naphthol (PAN) as colorimetric reactant was dispersed in polyvinyl butyral (PVB) and immobilized on the filter paper. The as-fabricated paper-based microfluidic analytical device (μPAD) combined with home-made SPE column was utilized for the selective and quantitative determination of copper(II) ion. The selectivity and sensitivity for copper(II) ion were significantly enhanced by SPE-combined μPAD. The sensor has a noticeable color change in the presence of copper(II) ion. The limit of detection was as low as 0.340 μM, which is much less than the drinking water guidelines in many countries and organizations. This technology is convenient and does not need any expensive instrumentation and professional skills. It is easily used to achieve rapid and on-site assessment of copper(II) ion in real-world situations.
研究领域:
分析化学
·
环境科学
✓ 已验证
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Jing Zhou,Hongyu Ning,Haixing Wang,Sen Zhao,Yu Xu,Yilei Fan,Zhongping Huang,Jianhong Gao
Cannabis is the most frequently abused drug worldwide, and the number of cannabis users is still growing. The high lipophilicity of cannabinoids results in extremely low concentrations in wastewater, which poses difficulties and challenges for monitoring cannabinoids. In this study, a hyperbranched mixed-mode anion exchange magnetic adsorbent Fe 3 O 4 @poly(GMA/DVB-WAX) was designed based on the structural characteristics of cannabinoids, which was prepared through copolymerization of glycidyl methacrylate (GMA) and divinylbenzene (DVB) on the surface of oleic acid coated Fe 3 O 4 microspheres followed by hyperbranched modification with ethylenediamine (EDA) and 1,4-butanediol glycidyl ether (BDDGE). This magnetic solid-phase extraction (MSPE) adsorbent can selectively extract four cannabinoids, Δ 9 -tetrahydrocannabinol (THC), cannabidiol (CBD), cannabinol (CBN), 11-nor-9-carboxy-Δ 9 -tetrahydrocannabinol (THC-COOH), from wastewater through the synergistic effects of hydrophobic interactions, electrostatic interactions, π-π stacking interactions, and hydrogen bonding interactions. The entire extraction time of the adsorbent only takes five minutes and the extraction recovery rates were in the range of 69.4 %-94.0 % for four cannabinoids after the MSPE procedure optimization. An MSPE-UHPLC-MS/MS quantitative method for determination of four cannabinoids in wastewater was established and validated. The results showed that this method had a good linearity within the range of 0.5–100 ng/L (r 2 > 0.9962). The limits of detection and the limits of quantification were 0.17–0.33 ng/L and 0.50–1.00 ng/L, respectively. The proposed MSPE-UHPLC-MS/MS method based on Fe 3 O 4 @poly(GMA/DVB-WAX) is a convenient, sensitive and reliable strategy and has great application prospects in the analysis of trace cannabinoids in wastewater.
研究领域:
分析化学
·
环境科学
·
毒理学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Xueting Li,Lin Wang,Yuanhui Tang,Huanhuan Wu,Lixin Yu,Xiaolin Wang,Yakai Lin
The safety and efficacy of low molecular weight dextran (LMWD) in pharmaceutical applications critically depend on the uniformity of its molecular weight distribution. In this study, a novel ultrafiltration (UF) modified membrane was prepared by UV-induced surface graft polymerization on the commercial polysulfone (PSf) membrane for the efficient separation of LMWD. Benzophenone (BP) was employed as the photoinitiator to initiate the grafting polymerization of the difunctional monomer divinylbenzene (DVB). During the polymerization process, DVB underwent both chain homopolymerization and intermolecular crosslinking, forming a dense three-dimensional network that significantly reduced the membrane pore size and enhanced its separation selectivity. The optimized PSf-g-DVB membrane, prepared with a concentration of 2 wt% DVB and 1 wt% BP, achieved over 85% rejection of 20 kDa dextran, while the rejection rate for 2 kDa dextran was only 0.2%, with a water permeance of 5.4 L·m -2 ·h -1 ·bar -1 . Furthermore, the membrane demonstrated excellent stability, maintaining a rejection difference of 70% between the two different molecular weights of dextrans after 48 hours of continuous filtration. In filtration experiments with mixed dextran solutions, the PSf-g-DVB membrane exhibited a separation factor as high as 11.5, nearly 9 times higher than that of the commercial PSf membrane, further confirming the feasibility of UV-grafted membrane modification for the selective sieving of LMWD, and offering a green and effective approach for pharmaceutical-grade dextran purification.
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2018
·Vol. 8
·期 5
·2593-2598
·
IF 2.936
Hailin Cong,Bing Yu,Lilong Gao,Bo Yang,Fei Gao,Hongbo Zhang,Yangchun Liu
Microporous, hollow, or macroporous polymer spheres were prepared by a seed emulsion polymerisation method. Different from the conventional seeded emulsion polymerization, the sorbitan monooleate (Span 80) was added to the seeded emulsion polymerization. In this study, the monodisperse PS seeds prepared by dispersion polymerization were swelled by dibutyl phthalate (DBP), glycidyl methacrylate (GMA), divinylbenzene (DVB) and Span 80 successively. The effect of the amount of Span 80 on the morphology of microspheres was investigated. As different amount of Span 80 was added to the mixture, the poly(glycidyl methacrylate-divinylbenzene) (PGMA-DVB) microspheres showed a variety of morphologies containing microporous, hollow, and macroporous structure. In addition, uniform hollow particles with different pore size can be obtained through adjusting the amount of Span 80.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
·
2019
·Vol. 33
·期 5
·e4850
·
IF 3.259
Mingliang Ma,Yuying Yang,Yanyan Liu,Wenting Li,Guopeng Chen,Yong Ma,Ping Lyu,Shunhe Li,Yubao Wang,Guanglei Wu
In this paper, a simple route for palladium (Pd) nanoparticles attached to the surface of hollow magnetic Fe 3 O 4 /P (GMA-DVB)-polyethyleneimine (PEI) microspheres was established. Due to the large amount of imidogen groups and tertiary amine groups presenting in the PEI, Pd 2+ ions could be anchored to the support by complexation with a polyfunctional organic ligand. Thereafter, a magnetic Pd catalyst having a high loading amount and good dispersibility was obtained by reducing Pd 2+ ions. Afterwards, the prepared catalyst was characterized by TEM, SEM, FTIR, XRD, TGA, VSM, and UV–vis in detail. Ultimately, their catalytic activity was evaluated using the reduction of 4-nitrophenol (4-NP). Research showed that the Fe 3 O 4 /P (GMA-DVB)-PEI/Pd catalyst possessed high catalytic performances for the reduction of 4-NP with a conversion rate of 98.43% within 540 s. Furthermore, the catalyst could be easily recovered and reused at least for nine successive cycles.
研究领域:
材料科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2020
·
IF 5.339
Shuxiang Li,Zongying Li,Feifang Zhang,Huiliang Geng,Bingcheng Yang
We describe a novel polymer-based zwitterionic stationary phase for hydrophilic interaction chromatography (HILIC). It is prepared by chemical modification of poly (glycidyl methacrylate-divinylbenzene) (GMA-DVB) by converting epoxide groups of microsphere surface to diol groups via hydrolysis, then clicking cysteine onto the microsphere with pendant double bonds of microsphere surface via “thiol-ene” click chemistry. The phase has been characterized by scanning electron micrograph, elemental analysis and zeta potential measurement. Diol and zwitterionic group (carboxylate and amine group associated with cysteine) onto the surface of GMA-DVB microspheres make them possess good hydrophilicity , as supported by effective separation towards common polar analytes. It shows good stability at alkaline solution (e.g. pH 10) and negligible bleed (e.g. only 1.7-fold blank and ~55-fold lower than a commercial silica-based polar phase tested with the minimal bleed level). Such phase exhibits specific separation selectivity to ionic analytes and simultaneous separation of anions and cations is achieved in the retention order of I − < NO 3 − < Choline < Br − < Cl − < K + < Na + .
研究领域:
分析化学
·
材料科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2016
·
IF 5.31
Ning Zhang,Suting Zhong,Xiang Zhou,Wei Jiang,Tianhe Wang,Jiajun Fu
Poly (styrene-divinylbenzene) (P (St-DVB)) foams with porosity as high as 98% were prepared by the method of high internal phase emulsions (HIPEs) in one-step process. The materials exhibited superhydrophobicity and excellent oleophilicity, with the water contact angle (WCA) even exceeding 150° and oil contact angle approaching 0°. The materials fabricated with different types of Fe 3 O 4 particles had varied hierarchical pore structures. And the adsorption capacity of the monolithic foam towards chloroform was as high as 57 g/g. Importantly, the materials soaked with oil could be regenerated effectively by means of centrifugation with oil recovery rate reaching 90%. More importantly, the monolithic PolyHIPEs (polymers obtained by the polymerization of the HIPEs) were subjected to 20 adsorption-centrifugation cycles and superior reusability was demonstrated. These features achieved with PolyHIPEs made them ideal candidates for practical oil removal applications.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Minjie Bi,Xiaohang Wei,Qirui Lou,Duolong Di,Dong Pei,Baoqian Liu
Due to the low adsorption capacity and poor adsorption selectivity of the resins, the separation of flavonoids was still a challenge in the separation field. In this work, a novel polymer microspheres Polystyrene-divinylbenzene-poly(Glycidyl methacylate- p -phenylenediamine(PS-DVB-PGMA-PPD) containing PGMA polymer brushes was synthesized by combining surface-initiated atom-transfer radical polymerization (SI-ATRP) and p-phenylenediamine (PPD) modification.The physical and chemical properties of materials were characterized by different analytical methods. It was found that the adsorption process conformed to the pseudo–second–order kinetic model and Freundlich isotherm model. The thermodynamic parameters of quercetin adsorption process indicated that the adsorption was spontaneous and endothermic. The adsorption experiments showed that the polymer PS-DVB-PGMA-PPD had the best adsorption capacity onto quercetin , and the maximum adsorption capacity was 72.68 mg/g at 318.15 K. Compared with other flavonoids and alkaloids (such as theophylline , berberine and rutin), PS-DVB-PGMA-PPD had higher adsorption capacity and better selectivity for quercetin. Hydrogen bond interaction and π - π interaction may drive the adsorption process of quercetin. In addition, When the ethanol content was 95%, the desorption rate can reach 80.9%. PS-DVB-PGMA-PPD still had good adsorption performances for quercetin after five cycles, which indicated that the material had good renewable performances. In general, the results showed that its adsorption capacity for flavonoids from complex biological systems was excellent.
研究领域:
材料科学
·
生物化学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Xinyu Chen,Yingrui Nie,Wenqian Fan,Zhimin Zhao,Zhifei Wang,Yong Jiang
In this study, yolk-shell magnetic hydrogel microspheres loaded with silver nanoparticles (Fe 3 O 4 @P(DVB-co-MAA)@Ag) were innovatively constructed for efficient catalytic reduction of nitroaromatic compounds. First, hollow P(DVB-co-MAA) microspheres were prepared as shell. Fe 3 O 4 magnetic nanoparticles were successfully deposited into the microspheres as yolk through the decomposition of metal-organic precursor salts in high-temperature organic solvents. The EM images shows that Fe 3 O 4 @P(DVB-co-MAA) microspheres consist of a magnetic core, an intermediate void layer, and a hydrophilic hydrogel shell, demonstrating a unique multilayered structural feature. Then, highly active silver nanoparticles were uniformly loaded onto the hydrogel shell surface using the thermal co-reduction method. Catalytic results demonstrated that the yolk-shell material showed significantly enhanced activity toward the reduction of 4-nitrophenol (4-NP) and 2-nitroaniline (2-NA), compared to the core-shell structured composite microspheres. The catalytic parameters were 65.44 s⁻¹ g⁻¹ and 46.44 s⁻¹ g⁻¹ , respectively. Remarkably, the composite retained over 85 % catalytic efficiency after five cycles of use and achieved rapid magnetic separation within 20 s under an external magnetic field.
研究领域:
材料科学
·
化学工程
·
纳米技术
·
催化
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2020
·
IF 5.339
Muhammad Mujahid Ali,Dilshad Hussain,Bin Xu,Tangqiang Sun,Zhenxia Du
Cis -diol compounds are class of biomolecules including nucleosides , glycoproteins , saccharides , and nucleotides, which play vital roles in various biological processes. Due to low abundances of these species in the complex biological samples, their identification and analysis is difficult. Boronate affinity materials are commonly used for the isolation and enrichment of cis -diol compounds, due to their unique, facile and selective enrichment mechanism. In this study we report a selective approach to extract nucleosides, glycopeptides and glycoproteins using boronic acid functionalized GMA-MAA-DVB polymer. This novel polymer, reported for the first time in proteomics, have high BET surface area (132.8447 m 2 g −1 ) which contribute to efficient enrichment and average pore size (20.3449 nm) to facilitates the nano confinement effect for strong interactions. Hydrophilic character of methacrylic acid and diethylenetriamine , along with inherent affinity of boronic acid for glycosylated biomolecules result in selectivity up to 1:500 for peptides and 1:1000 for glycoprotein. Binding constant for cis -diol compounds are in the range of 10 −4 to 10 −6 M and theoretical binding capacity up to 85 mg g −1 for HRP and 180 mg g −1 for IgG, respectively. Furthermore, boronic acid functionalized polymer (BFP) enrich glycoproteins and glycopeptides in range of 1 pg mL −1 and 0.04 ng mL −1 with S/N ≥ 3. Finally, material is applied to enrich the glycoproteins from healthy human saliva sample and six glycoproteins are identified.
研究领域:
生物化学
·
蛋白质组学
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产品关联
DOI
PubMed
高影响因子
Soft Matter
·
2021
·Vol. 17
·期 8
·2327-2339
·
IF 3.679
Caimei Zhao,Lei Chen,Chuanming Yu,Binghua Hu,Haoxuan Huang,Yongjie Chen,Xin Wang,Yongshi Ye,Xiaohui Zhuang,Yong Li
Super-hydrophobic porous absorbents are convenient, low-cost, efficient and environment-friendly materials in the treatment of oil spills. In this work, a simple Pickering emulsion template method was employed to fabricate an interconnected porous poly(DVB–LMA) sponge. A new co-Pickering stabilization system of Span 80 and NiFe2O4 nanoparticles was used to prepare ultra-concentrated internal phase water-in-oil (W/O) emulsions. After further polymerization, the resulting sponges were generated, which exhibited excellent adsorption selectivity due to the super-hydrophobicity and super-lipophilicity. Furthermore, the characterization results indicated that the composites had superior thermal stability, low density, high porosity and a flexible three-dimensional porous structure. Besides, the addition of nickel ferrite nanoparticles provided the materials with extra magnetic operability. High oil adsorption capacity (up to 36.9–84.2 g g−1), high oil retention, fast adsorption rate and superior reusability allowed the materials to be applied in the treatment of oily water.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Haitao Shi,Haijun Zhang,Yuan Gao,Jiajia Yang,Jiping Chen
Solid amine adsorbents are showing promise as effective adsorbents for the capture of CO 2 from various gas mixtures, including biogas and flue exhaust gas. In this study, we introduced a co-grafting strategy using 1,4-butanediol diglycidyl ether (BDDE) on the surface of P(DVB-D). This approach aimed to exploit the reaction involving the opening of epoxy groups with amine groups, forming covalent bonds between polyethyleneimine (PEI) and mesoporous organic polymers, along with the introduction of hydroxy groups to enhance adsorbent long-term stability and antioxidation ability. After an extensive assessment, P(DVB-D)@B-41.2 %PEI exhibited a maximum CO 2 capture capacity of 4.53 mmol/g at 50 °C and 50 % RH. Notably, its remarkable CO 2 adsorption performance persisted across a diverse temperature spectrum (30–90 °C) and an extensive concentration span (5–30 % vol.). In contrast to conventional adsorbents prepared solely through impregnation methods, P(DVB-D)@B-41.2 %PEI exhibited impressive long-term stability throughout 50 successive cycles and excellent resistance to oxidative degradation. These findings underscore the considerable potential of P(DVB-D)@B-41.2 %PEI in the realm of carbon capture and sequestration (CCS) technology.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）