RSC Advances
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2019
·Vol. 9
·期 36
·20715-20727
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IF 3.049
Hong-Li Zhang,Bing-Hua Liu,Mingbo Yang,Pan Zhang,Jing-Gang Gai
A novel sulfaguanidine (SG)-modified polyamide thin-film composite (TFC) nanofiltration (NF) membrane was constructed by the strategy referred to as co-solvent assisted interfacial polymerization (CASIP), which involves the respective interfacial polymerization (IP) of piperazine (PIP) and SG with trimesoyl chloride (TMC) on porous polysulfone (PSf) supports. CASIP enables the formation of a defect-free thin dense active layer and favors higher water permeance up to 79.0 L m−2 h−1 with rejection above 98.3% for Na2SO4. The resulting PA membrane also demonstrates a high flux recovery ratio of nearly 98.9% to bovine serum albumin protein after being cleaned. More importantly, the current membrane shows excellent anti-adhesive and antimicrobial performances against Gram-negative Escherichia coli, Gram-positive Bacillus pumilus LDS.33 and Aspergillus parasiticus JFS. This promises great potential application of the PA membrane for practical water/wastewater treatment. The prospect of using the co-solvent mediated SG-modified layer as a next-generation anti-fouling/antimicrobial membrane is very encouraging.
研究领域:
环境科学
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材料科学
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微生物学
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PubMed
高影响因子
FOOD CHEMISTRY
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2018
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IF 4.946
Lei Li,Zhengzhong Lin,Zhiyong Huang,Aihong Peng
A photonic crystal (PC) sensor was prepared through molecular imprinting by using dispersed SiO 2 microspheres as PC, sulfaguanidine (SG) as template, methacrylic acid as monomer, and ethylene glycol dimethacrylate as crosslinker. The preparation conditions were optimized as follows: molar ratio of template, monomer, and crosslinker was 1:10:4; pH was 6.0 in phosphate buffer; and volume fraction of methanol was 15%. The relationship between wavelength shift of reflection peak and SG concentration was found as: Δλ = 7.8887 lg(C) + 79.9664. The response time was only 5 min. The limit of detection was 2.8 × 10 −10 mol L −1 . The sensor exhibited higher specificity for SG than its sulfonamide analogs. The sensor maintained original sensing performance after five cycles of usage. The recoveries of SG ranged from 93.8% to 111.2% in lake water and from 88.5% to 115.2% in fish samples. This finding suggested that the sensor can be used in food samples with complicated matrix.
研究领域:
分析化学
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食品科学
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环境科学
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PubMed
高影响因子
Journal of Applied Spectroscopy
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2025
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IF 1
Xu Jia Jia,Shao Ke Man,Chen Su Yan,Lin Zheng Zhong
A rare earth complex was synthesized using α-thiophenoyltrifluoroacetone and o-phenanthroline as ligands. The complex was characterized by thermogravimetric analysis, infrared spectra, elemental analysis, and X-ray powder diffraction. The fluorescence spectra showed that the complex produced the characteristic fluorescence emission of Eu 3+ ions at 615 nm, highly overlapping with the absorption peak of malachite green to cause fluorescence quenching. Fluorescence lifetime confirmed that the quenching mechanism is a fluorescence resonance energy transfer at low concentration, and fluorescence resonance energy transfer and inner filter effect at high concentration. The complex could exclude the interference of other aquaculture fish drugs and has a specific selectivity for malachite green. Response time was within 1 min, and the linear range was 0.1–70 μmol/L. Detection limit was calculated to be 0.023 μmol/L (3σ/k, n = 9). Spiked recoveries of malachite green in water and fish were in the range of 89.2–98.6%, indicating that the complex could be used as a fluorescent probe for the detection of malachite green residues.
研究领域:
分析化学
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环境监测
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食品安全
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荧光光谱学
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材料科学
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高影响因子
AQUACULTURE
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2026
·
IF 3.9
Jian-Fei Wang,Wei-Dan Jiang,Pei Wu,Yao-Bin Ma,Hong-Yun Zhang,Yang Liu,Lu Zhang,Hai-Feng Mi,Lin Feng,Xiao-Qiu Zhou
Nitrite is a toxic substance widely present in aquaculture water environments. This study explored the impact of vitamin K on liver pathology in grass carp ( Ctenopharyngodon idella ) challenged with nitrite. Grass carp received diets with six vitamin K concentrations (0 + sulfamethoxazole, 0, 1, 2, 3, and 4 mg/kg) for 60 days, then endured a 96-h nitrite stress test. Our results showed that vitamin K enhanced growth performance and reduced damage indicators in adult grass carp, including weight gain percentage (PWG), glutamic-pyruvic transaminase (GPT), and methemoglobin (MetHB). At the cellular level, vitamin K upregulated the expression of Golgi apparatus matrix protein 130 (GM130) and acid sphingomyelinase (ASM) in hepatocytes, increased sphingomyelin and ceramides levels, and repaired stress-damaged cell membranes. At the tissue level, vitamin K promoted liver regeneration by upregulating repair markers α-smooth muscle actin (α-SMA) and transforming growth factor-β (TGF-β) and boosting collagen deposition via growth arrest-specific 6 (GAS6) and its receptor AXL. Additionally, vitamin K alleviated nitrite-induced hepatocyte apoptosis, potentially through upregulating the nuclear factor erythroid 2-related factor 2 (Nrf2) signaling pathway to maintain mitochondrial homeostasis. With PWG and GPT as indicators, the optimal vitamin K requirements for normal and nitrite resistance of adult grass carp were 1.88 and 1.94 mg/kg, respectively. This study assessed the effects of nitrite exposure on grass carp liver, elucidated the potential mechanism by which vitamin K mitigates such damage, and provided novel insights for alleviating nitrite stress in fish.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Dalong Hu,Dan Cao,Rui Li,Xintong Li,Peng Zhao,Yaohong Yu,Yajuan Li,Zhengjiang Wang,Runfang Fu,Gongyan Liu
Membrane fouling, particularly that induced by microbial and organic contaminants, severely limits the efficiency and lifespan of reverse osmosis (RO) membranes in surface water treatment. Herein, a sequential covalent post-modification strategy is developed by exploiting the native carboxyl groups of a commercial RO membrane to fabricate a novel dual-defense RO membrane. Specifically, sulfaguanidine (SG) and poly(glycidyl methacrylate- co -sulfobetaine methacrylate) (PGS) are sequentially immobilized on the polyamide layer via amidation and epoxy ring-opening reactions, with SG and PGS serving as the bactericidal and antifouling components, respectively. Benefiting from this interfacial structure, the resulting membrane (ROSP) achieves a 2.4-fold higher water flux of 34.04 L·m −2 ·h −1 than that of the pristine membrane while maintaining a high NaCl rejection of 98.47%. Furthermore, the ROSP membrane exhibits low irreversible fouling ratios (< 8.27%) during 11 h cyclic fouling filtration tests, displays over 99% bactericidal efficiency against both E. coli and S. aureus , and enhances the tolerated chlorine exposure by 42.9% to 10,000 ppm·h. More importantly, during 144 h of continuous filtration using real surface water, the ROSP membrane maintains stable separation performance and a bactericidal efficiency of 92.63% against native microorganisms. This work offers an effective covalent surface-modification strategy for developing durable RO membranes for surface water treatment.
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TALANTA
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2025
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IF 6.1
Rongfang Yan,Xuelian Hu,Ning Zhang,Weihua Liu,Wenxiu Wang,Yiwei Tang
Fluorescent tripeptide nanoparticles (PNPs) emitting cyan fluorescence were first synthesized using a Trp-Phe-Phe/Zn(II)-based self-assemble method. Molecular docking and dynamics simulations were employed to elucidated the self-assembly process of PNPs, the underlying driving forces, and their influence on the fluorescence properties of PNPs. The resultant PNPs were functionalized with an aptamer specific to sulfadiazine (SDZ), thereby creating a highly sensitive fluorescent probe. This probe demonstrated exceptional sensitivity and selectivity for SDZ detection, leveraging the inner filter effect to induce significant fluorescence quenching. The method demonstrated a wide linear range (0–200 ng/mL) and a low detection limit (0.4 ng/mL). Validation in spiked real samples (tap water, beef, chicken, and fish muscle) yielded recoveries of 83.20–114.08 % with relative standard deviations of <7 %, confirming its accuracy and reliability. This study provides insights into the assembly mechanism of tripeptide nanoparticles and offers a practical tool for food safety monitoring.
研究领域:
分析化学
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食品科学
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分子生物学
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PubMed
高影响因子
ADVANCED MATERIALS
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2025
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IF 26.8
Xiuling Li,Yuechuan Bi,Xiang Guan,Jiaqi Wang,Jinli Liu,Yingjie Zhao,Chunli Zhao,Zhuojian Li,Shurui Chi,Junnan Wang,Renjing Chen,Zixun Zhao,Zemin Wang,Xin Tong,Ninggui Ma,Han Liu,Zhiming Wang,Zongwen Liu,Yang Ren,Zhanhua Wei,Kebin Lin
Eco-friendly CsSnI 3 -based perovskite light-emitting diodes (PeLEDs) with the emission peak extending to the near-infrared-II (NIR-II) region hold tremendous potential for applications in biological monitoring, night vision, and optical communications. However, the various defects caused by the instability of Sn 2+ within the CsSnI 3 film, and the non-equilibrium carrier injection rate in the devices are the two major factors that limit the device performance. Here, we report high-performance NIR-II CsSnI 3 -based PeLEDs achieved by employing functional sulfaguanidine (SG) molecules. Due to the strong S═O─Sn coordination bonds, NH 2 ···I − hydrogen bonds could be formed between CsSnI 3 and SG, which effectively eliminated various Sn(II)-related defects in the CsSnI 3 film. Moreover, the SG molecules significantly improved the morphological uniformity and regulated the carrier injection balance, resulting in more balanced carrier injection that enhanced the effective radiation recombination rate. Consequently, the optimized CsSnI 3 -SG PeLEDs achieved a breakthrough external quantum efficiency (EQE) of 8.1%, which is the highest efficiency reported for CsSnI 3 -based PeLEDs to date.
研究领域:
光电子学
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材料科学
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钙钛矿发光二极管
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近红外光子学
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PubMed
高影响因子
MACROMOLECULES
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2024
·
IF 5.1
Zhen Yu,Yanlin Liu,Sheng Wang,Yajin Fang,Xiangyu Zhou,Zhaobin Tang,Jin Zhu,Junping Zhang
Dynamic covalent adaptive networks can solve the recycling issue of thermosets. However, dissociative dynamic covalent networks may suffer from instability and network incompleteness at high temperatures or in solvents. Here, we report a novel dynamic covalent bond, N-sulfonyl guanidine urea (SGUA), that can undergo catalyst-free metathesis reactions, in which a passivation strategy of increasing the dissociation temperature of guanidine urea by introducing electron-withdrawing N-sulfonyl groups into adjacent positions was developed. Unlike conventional dissociative dynamic urea bonds, SGUAs exhibit associative metathesis reactions at around 120–180 °C, with a high dissociation threshold of 180 °C. The dynamic covalent polyurea constructed by SGUAs, named PSGUAs, exhibits ultrastrong (Young’s modulus exceeding 4 GPa and tensile strength exceeding 60 MPa) and stable (thermal stability, network structure integrity under reprocessing, and dimensional stability) performances. Furthermore, due to the excellent dynamic characteristics of SGUAs, PSGUAs were successfully reprocessed after 30–60 min of hot pressing at 160 °C and 20 MPa. Combining the long-lasting antibacterial properties of PSGUAs with long-term use, this study marks a substantial improvement in the field of dynamic polymer networks, giving a solution for balancing material stability, high performance, and reprocessability.
研究领域:
材料科学
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聚合物化学
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可持续材料
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2026
·
IF 4.8
Huiting Feng,Yuxin Yang,Ruiling Li,Yuting Yang,Zongwen Wang,FengFu Fu,Yue Lin
A variety of sulfonamides (SAs) are extensively utilized in animal husbandry and aquaculture, necessitating the development of high-throughput methods for the rapid screening and accurate determination of multiple, ideally all commonly-applied SAs, in animal-derived foodstuffs. We herein developed a paper-based colorimetric aptasensor for the detection of eight different SAs employing a mixture of two broad-specific aptamers as bio-receptor, ascorbic acid (AA)-mediated gold nanobipyramids (AuNBPs) growth for generating color signals, and a paper-based analytical device (PAD) for stabilizing and enhancing color signals. The aptasensor exhibits target SAs concentration-corresponding multiple color changes and has excellent specificity. It can be used to visually screen eight SAs (either individually or collectively) with a visual detection limit (LOD) of 4.0 μM, and quantitatively detect these SAs (either individually or collectively) with a spectrometry LOD of 0.2 μM. Importantly, the signals of the aptasensor can be stably stored for one month for later verification, and the spectrometry LOD is lower than the maximum residue limit (MRL) of total SAs in animal-derived foodstuffs. The aptasensor was successfully applied to detect eight SAs (either individually or collectively) in milk samples with a recovery of 89% - 95% and a relative standard deviation (RSD, n = 5) < 8%. The results obtained with the aptasensor were consistent with those obtained using commercial ELISA kit. These findings demonstrated that the aptasensor simultaneously meets the requirement of instrument-free screening and quantitative determination of eight SAs in animal-derived foods, making it a promising approach for ensuring the consumption safety of animal-derived foodstuffs.
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JOURNAL OF CHROMATOGRAPHY A
·
2021
·
IF 4.759
Changjun Hu,Zhenkun Mao,Zhentao Li,Qiaoyan Li,Zilin Chen
Hydrophilic column combined with mobile phase containing high content of water is a green method for the separation of polar compounds, but there are few related studies, and the separation efficiency and performance of existing columns still needs to be improved. In this work, a novel monolithic column for separation of hydrophilic compounds under both high water content and HILIC condition, was prepared by in-situ polymerization using 4-vinylbenzoic acid (VBA) and 1-(Acryloyloxy)-3-(methacryloyloxy)-2-propanol (AMAP) as functional monomers. The poly(VBA- co -AMAP) monolithic column showed good separation performance towards various polar compounds under different chromatographic conditions based on the π-interaction, hydrophobic and hydrogen bonding interactions provided by 4-vinylbenzoic acid functional monomer. The highest column efficiency for adenine was over 2.15 × 10 5 plates m −1 (theoretical plate, N). In addition, the monolith showed good stability and reproducibility, the relative standard deviations (RSDs) of retention times within days (n = 5), between days (n = 5), between columns (n = 3) and between batches (n = 3) were 0.47-1.13%, 1.20-2.68%, 0.59-1.78% and 1.54-3.60%, respectively. This novel type of monolith has great application potential in the separation of hydrophilic compounds.
研究领域:
分析化学
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色谱技术
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PubMed
高影响因子
POLYMER DEGRADATION AND STABILITY
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2019
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IF 3.78
Peng Wang,Lei Chen,Hang Xiao,Tonghui Zhan
Improving the flame retardancy of epoxy resin will greatly expand its application in the fields requiring flame retardancy. Herein, a nitrogen/sulfur-containing DOPO based oligomer (SFG) for highly efficient flame-retardant epoxy resin was successfully synthesized via a facile one-pot method with DOPO, sulfaguanidine and p -phthalaldehyde. The incorporation of SFG accelerated the cross-linking reaction of epoxy system and improved the tensile strength , flame retardancy and fire safety of epoxy thermoset . SFG showed high flame-retardant efficiency due to the synergism among nitrogen, sulfur and phosphorus. With only 0.38 wt% phosphorus content, the corresponding epoxy thermoset achieved an LOI value of 32.8%, passed UL-94 V-0 rating and possessed lower fire growth rate and total heat release in cone calorimeter test in comparison with neat thermoset. SFG exerted dual flame-retardant effect not only by diluting oxygen and combustible volatiles and quenching active radicals, but also by promoting the formation of thermal insulating char layer with honeycombed cavity inside. Moreover, the appearance of blowing out phenomenon during combustion was disclosed that the intensive release of gases blew out the flame based on the dilution and quenching effects when the inner gas pressure was sufficient to break through the char layer.
研究领域:
材料科学
·
化学工程
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高影响因子
ACS Applied Materials & Interfaces
·
2016
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IF 7.145
Dandan Qin,Wangyang Lu,Xiyi Wang,Nan Li,Xia Chen,Zhexin Zhu,Wenxing Chen
For powder catalysts to be recycled easily and to be applied in practical wastewater treatment, it is imperative to search suitable carriers that can be applied to support catalytic particles. Herein, we highlight a facile route to synthesize an easily recycled photocatalyst using polyethylene terephthalate (PET) to disperse graphitic carbon nitride (g-C3N4) via electrospinning and subsequent hydrothermal treatment. The resultant nanofiber is labeled T-g-C3N4/PET. The design concept is to expose the g-C3N4 on the PET surface and convert it from inactivation to re-emergence. g-C3N4 is embedded into the PET, which avoids the reunion and unrecyclable deficiencies of powder catalysts. T-g-C3N4/PET was characterized by field-emission scanning electronic microscopy, transmission electron microscopy, UV–vis diffuse reflectance spectra, two-dimensional X-ray diffraction, Fourier-transform infrared spectroscopy, and thermogravimetric analysis technologies. T-g-C3N4/PET showed a high photocatalytic activity for the degradation of antibiotics such as sulfaquinoxaline and sulfadiazine under solar irradiation, and the activity was almost unaffected in a high background. The as-obtained catalysts could be reused several times with no loss in performance in cycling photodegradation tests. Finally, a possible pathway and mechanism for degrading sulfaquinoxaline with T-g-C3N4/PET was proposed, respectively, in which holes and the superoxide radical were the predominant active species, and resulted in the oxidative degradation of antibiotics. These results demonstrate that the preparation method may provide a novel idea for supporting nanoscale catalysts for reuse.
研究领域:
环境科学
·
材料科学
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PubMed
高影响因子
危险品化学品经营许可证（带存储）