ACS Applied Polymer Materials
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2024
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IF 4.4
Qianlan Huang,Jialing Li,Zhiyuan Peng
An active hydroxymethyl group was introduced to the phenolic ring structure of tannin, and then the polyphenol network from hydroxymethyl tannin was immobilized on the surface of the filter paper (FP) by the reaction between hydroxymethyl tannin and cellulose of FP. Due to the introduction of the polyphenol structure on the surface of the FP, the ultraviolet absorption of the FP was broadened, the thermal stability of the FP was increased, and the FP was endowed with the antibacterial properties. The inhibition efficiency for Escherichia coli and Staphylococcus aureus was 82.3 and 80.1%, respectively. The FP-immobilized polyphenol network of tannin had good adsorption performance for methyl violet (MV), and the maximum adsorption capacity for MV was 131.5 mg·g–1. The adsorption efficiency could reach more than 98% when the initial mass concentration of MV was lower than 50 mg·L–1. The adsorption process conformed to the Langmuir isothermal adsorption model and quasi-secondary adsorption kinetic model. The FP-immobilized polyphenol network of tannin has good adsorption repeatability, and the preparation method is facile, green, and ecofriendly, which can be considered as a new potential adsorbent for dye wastewater.
研究领域:
材料科学
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环境科学
·
生物学
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DOI
高影响因子
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
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2023
·
IF 3.4
Lele Wang,Xuezhi Wang,Wenyue Li,Jiajia Liu,Xiukun Yao,Zhiwen Wei,Keming Yun
Phase II metabolites play an important role in diazepam-related cases. The study aimed to assess the stability of diazepam’s phase II metabolites in dried blood spots on filter paper. Methods A piece of filter paper was spotted with 100 µL of whole blood (added 1% sodium fluoride as needed) obtained from participant who received 5 mg diazepam orally, air dried for 2 h at room temperature , and then stored at different conditions. Whole spots were cut at 0.1 cm from the outer edge of blood spots at post-consumption time-points of prior (zero), 5, 16, 35, 61, 120 days and 1, 1.5 years. Analytes were extracted with methanol/water mixture (8:2, v/v) and determined using HPLC-MS/MS. Decomposition rules were analyzed by a statistical software “SPSS”. Results Temazepam glucuronide remained stable (0.5–18.6% loss) at 20 ℃ and at 20 ℃ with 1% sodium fluoride for 16 days, while it was unstable after 5 days at 4 ℃ (21.1–26.2% loss) and − 20 ℃ (28.9 - 34.4% loss). After 35 days, temazepam glucuronide concentrations began to fluctuate significantly under all conditions, and an obvious increase (290.4–355.1%) was observed in 1.5 years. Oxazepam glucuronide was always unstable after 5 days, the percentage loss was even 100% when it was stored for 61 days and 1.5 years. Conclusions Dried blood spots on ordinary filter paper are recommended to be stored at 20 ℃ or 20 ℃ with 1% sodium fluoride within 16 days. Samples should be analyzed immediately or stored in sterile and dry media.
研究领域:
药理学
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法医学
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产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
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2018
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IF 5.158
Wenyan Wang,Yuanyuan Yu,Ping Wang,Qiang Wang,Yongqiang Li,Jiugang Yuan,Xuerong Fan
This study reports on eco-friendly graft polymerization approach for the modification of a cellulosic material via combination between enzymatic catalysis and reversible addition-fragmentation chain transfer polymerization (RAFT). Polyacrylamide (PAM) was polymerized on a cellulosic filter paper via horseradish peroxidase (HRP)-initiated RAFT polymerization. The results of grafting ratio, conversion, and pseudo-first-order kinetics were proved that the PAM graft polymerization on the filter paper followed RAFT rules. The results of Attenuated total reflection (ATR-FTIR), elemental analysis, and X-ray photoelectron spectroscopy (XPS) confirmed the presence of PAM in PAM-grafted filter paper. The results of water contact angle and Thermogravimetric analysis (TG) evidenced the change in the wetting properties and thermal performance, respectively of the treated filter paper. This work provides a new environmentally approach to graft polymerization on cellulosic materials.
研究领域:
材料科学
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生物化学
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产品关联
DOI
PubMed
高影响因子
LANGMUIR
·
2025
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IF 3.9
Minqiang Xia,Yulu Ye,Tuo Li,Yunbo Li
Gold nanoparticles (AuNPs) have outstanding catalytic properties, whereas their broader application is hindered by limited charge transport and stability. In this work, we present a simple and rapid synthesis method for immobilizing AuNPs onto filters using polythiourea, aimed at facilitating charge transport and enhancing the catalytic conversion of 2-nitrophenol in aqueous solutions. The results show an obvious enhancement in the catalytic performance of the AuNPs when immobilized onto the filter paper with polythiourea, reducing the complete conversion time from 14 min to 150 s. The optimal addition amount of polythiourea is 5.0 mL. Additionally, the kinetics and recyclability of the system were investigated; it was observed that even after 15 cycles of testing, the catalytic complete conversion time of the AuNPs immobilized on the filter with polythiourea maintained consistently at 150 s. These findings suggest a promising strategy for extending the functional lifespan of AuNPs while offering a platform for catalytic reactions.
研究领域:
材料科学
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催化化学
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DOI
PubMed
高影响因子
Materials Research Express
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2020
·Vol. 6
·期 12
·125350
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IF 1.929
Chengmin Hou,Mei Wang,Xiaolin Zhang,Na Li,Xueqi Kong,Guangming Zhuo
The preparation of hydrophobic surfaces has been extensively studied, but the reversible responsive hydrophobic surface has received less attention. In this paper, poly(styrene-random-methyl methacrylate-random-acrylic acid) (P(St-r-MMA-r-AA)) was prepared by conventional free radical polymerization, and the filter paper and cotton fabric were immersed in P(St-r-MMA-r-AA) methanol solution to construct a hydrophobic surface. The hydrophobic property, chemical composition and surface morphology of the hydrophobic filter paper and cotton fabric surface were characterized by contact angle, Gibbs free energy, infrared spectroscopy and scanning electron microscopy. The optimum conditions for constructing hydrophobic filter paper and cotton fabric surface were investigated. When the surfaces of hydrophobic filter paper and cotton fabric were treated with methanol, tetrahydrofuran and deionized water respectively, the semihydrophobic-hydrophobic-hydrophilic reversible transformation could be achieved. After ten cycles of experiments, the contact angles under the three solvent stimulations had no significant change, and the hydrophobic properties of the hydrophobic cotton fabric were superior to that of hydrophobic filter paper. The Gibbs free energy calculation of the hydrophobic surface indicated that the change in surface hydrophobic property was due to the inversion between the hydrophobic PS segment, the PMMA segment, and the hydrophilic PAA segment.
研究领域:
材料科学
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表面化学
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DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2024
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IF 12.2
Jiangyan Lu,Zhu Xiong,Mahmud Sakil,Yuhang Cheng,Kaige Dong,Dongdong Qin,Wei Zhang,Li Yu,Gaosheng Zhang,Shuaifei Zhao
Developing highly efficient adsorbents for the removal of trace thallium(I) (Tl + ) is crucial for addressing environmental challenges. In this study, we successfully synthesized cubic Prussian blue (PB) loading on filter papers using an intermediate layer (dopamine/polyethyleneimine) via in-situ methods. The as-prepared PB-modified FP demonstrated outstanding anti-interference properties and light-enhanced adsorption performance for Tl + (0.5 mg/L) under ultraviolet (UV) irradiation, exhibiting twice the effectiveness compared to dark conditions, even in acidic and coexisting ionic environments. This indicated its suitability for treating complex Tl + -contaminated water. Notably, the removal efficiency for trace Tl + was almost 100%, with a maximum experimental adsorption capacity of 86.2 mg/g after 1-h photo-promoted adsorption under 365 nm UV. Characterization results supported a proposed photo-driven redox mechanism that elucidated the interaction between Tl + and PB-modified FP. Specifically, the accelerated Fe(III) to Fe(II) redox reaction facilitated Tl + accommodation on the surface and/or lattice of PB, enhancing Tl + adsorption by compensating for missed positive charges. This study provides valuable insights into utilizing PB-based materials to enhance the photo-enhanced Tl + adsorption capacity in a cost-effective, easy-to-synthesize, and environmentally friendly manner.
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
CELLULOSE
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2024
·
IF 4.9
Zhang Yu-Ping,Zhao Chang-Hua,Yuan Pei,Wan Li
Materials with stimulus-responsive wettability are attracting increasing attention because of their potential applications in oil/water separation and oil spill remediation. Herein, a pH-responsive filter paper was rapidly fabricated by initially forming a complex between TiO 2 and octadecylamine, followed by immersion in an ethanolic solution of SiO 2 nanoparticles. The resultant filter paper exhibited superhydrophobicity and superoleophilicity in air when the solution pH was greater than 6.0, whereas it became superhydrophilic and superoleophobic when the solution pH was less than 2.0. The treated filter paper was used for the controllable separation of complex oil/water/oil ternary mixtures, demonstrating its strong response to pH changes. The pH-responsive filter paper effectively separated both immiscible oil/water mixtures and different kinds of oil-in-water emulsions with separation efficiencies exceeding 99%. The durability of the pH-responsive filter paper was demonstrated by its ability to maintain a separation efficiency of around 99%, even after 25 cycles of separating a typical emulsion of tetrachloromethane in water. The developed approach has the potential to provide innovative smart materials for the treatment of oil-contaminated wastewater. Graphical abstract
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
Separations
·
2022
·Vol. 9
·期 11
·340
·
IF 3.344
Zhimin Cai,Yutao Luo,Lu Gan
Herein, we loaded cobalt-based zeolite imidazolate frameworks, ZIF-67 (Co), onto commercial filter paper to prepare catalytic filter paper (ZFP) for the in situ degradation of bisphenol A (BPA) in water by activating peroxymonosulfate. The results showed that ZIF-67 (Co) was densely and uniformly distributed on the surface of the filter paper. The prepared ZFP could effectively degrade BPA in situ through a gravity-driven filtration process. Specifically, when the flow rate of the BPA solution passing through ZFP was lower than 10 mL/min, 0.02 mM of BPA could be completely degraded by ZFP. Furthermore, ZFP showed promising water matrix adaptability, which could provide promising BPA degradation efficiency in a wide pH range or in the existence of multiple anions. The scavenging tests demonstrated that both sulfate radical and hydroxyl radical were generated for BPA degradation, in which hydroxyl radical was the dominant active species. The ZFP also exhibited promising long-time use stability with a high mineralization rate. This study provides a novel method to prepare high-efficient catalyst paper for the in situ organic pollutant removal in water media via a prompt filtration process.Keywords:peroxymonosulfate;degradation;catalytic filter paper;zeolite imidazolate frameworks
研究领域:
环境科学
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材料科学
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DOI
高影响因子
FOOD CHEMISTRY
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2020
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IF 6.306
Guohuan Huang,Yuping Yan,Danxia Xu,Jia Wu,Chuanhui Xu,Lihua Fu,Baofeng Lin
Food spoilage is one of the biggest concerns for food safety worldwide. Here, we describe the construction of a carrier for biological agents by chemical combination of porous nanoMOFs and carboxymethylated filter paper (CMFP). When curcumin was encapsulated in nanoMOFs@CMFP, they showed the ability to act as super-long-acting food preserving agents with controllable release of curcumin. Although only 22.3% of curcumin was released into water in 600 h, 65.8% was released into PBS in the same time, and the release into PBS could be tuned by adding citric acid at the time of greatest requirement. Furthermore, the chemical stability of curcumin in nanoMOFs@CMFP was >4.9 times greater than for free curcumin. The outstanding antioxidant and antimicrobial activity of curcumin-loaded nanoMOFs@CMFP paste was demonstrated by prolonging the shelf life of pitayas, which illustrates its potential for development as long-acting and stable preserving paste for use in food preservation.
研究领域:
食品科学
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材料科学
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生物学
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DOI
高影响因子
CELLULOSE
·
2018
·Vol. 26
·期 2
·1355-1366
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IF 3.809
Tang Xinde,Wang Xuefei,Tang Chao,Ma Jianpeng,Zhang Suyuan,Li Zhanfeng,Dong Fuying
Abstract Inspired by the robust and durable adhesion of mussels, highly hydrophobic filter paper was fabricated by a polydopamine (PDA)-assisted one-pot procedure using silica nanoparticles and silane coupling agent (hexadecyltrimethoxysilane, HDTMS) as coating materials at ambient temperature. The surface chemistry, morphology, and hydrophobicity of the coated filter paper were measured by Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, atomic force microscope, scanning electron microscopy, and water contact angle. The capacity, durability, and recyclability of the coated filter paper were evaluated by the separation of oil–water mixtures and emulsions. The coated filter paper is highly hydrophobic with a water contact angle of > 130°. The coatings with enhanced adhesion to the substrate resisted mechanical abrasion without significant loss of hydrophobicity, which suggested that PDA plays a crucial role in improving the adhesion of silica nanoparticles to the paper surface. The coated filter paper showed high oil–water separation efficiency up to 95%, and maintained high hydrophobicity after recycling over 10 cycles. The coated filter paper that is based on a simple, low cost, and environmentally friendly procedure exhibits potential for applications in oil-recovery and oil–water separation materials. Graphical Abstract
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
高影响因子
Sustainable Energy & Fuels
·
2017
·Vol. 2
·期 1
·147-154
·
IF 0
Leicong Zhang,Xuecheng Yu,Pengli Zhu,Fengrui Zhou,Gang Li,Rong Sun,Ching-ping Wong
In this study, a flexible asymmetrical solid-state filter paper-based supercapacitor was fabricated. Common laboratory filter paper (FP) provides toughness and flexibility to the whole device. Simply, traditional electroless Ni plating and electro-deposition were introduced to change the electrical conductivity of FP as a flexible and conductive substrate material. Then, the electrochemical active material Co(OH)2 and active carbon (AC) were respectively coated on the conductive Ni paper through electro-deposition and physical coating methods to prepare Ni/Co(OH)2-FP as a positive electrode and Ni/AC-FP as a negative electrode. Moreover, they were separated by a piece of FP coated with an ionic gel electrolyte to assemble the flexible asymmetrical solid-state supercapacitors. This supercapacitor exhibits superior flexibility, large volume energy density (0.64 mW h cm−3), and good bending cycle performance (95.89% capacitance retention after 500 bending cycles). It has been demonstrated that the assembled supercapacitor can still power a red light-emitting diode (LED) indicator normally regardless of the bending state and bending frequency. This study may provide promising insights for the design and fabrication of a flexible asymmetrical solid-state supercapacitor in a flexible power supply for wearable and portable applications.
研究领域:
材料科学
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能源存储技术
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产品关联
DOI
ANALYTICAL LETTERS
·
2016
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IF 1.088
Yinjuan Chen,Chongsheng Xu,Fuxing Xu,Kai Yang,Qiang Wang,Xin Zhao,Yuanyuan Wang,Bin Chen,Chuan-Fan Ding
An electro-filtering spray ionization source for ambient mass spectrometry is reported. The ion source was assembled with a conical metal filter with a paper cone. The performance of the new ion source was characterized by the analysis of soil. Soil was directly introduced into the filter-paper cone and solvent was added. Ions were produced at the filter-paper tip when a high voltage was applied. The results by electro-filtering spray ionization were in good agreement with the results using conventional electrospray ionization with complex sample preparation. Advantages of electro-filtering spray ionization include simplicity, speed, and convenient operation that may allow in situ analysis in ambient atmospheric conditions.
研究领域:
分析化学
·
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）