CARBOHYDRATE POLYMERS
·
2021
·
IF 9.381
Jingxuan Zhao,Hongxu Liu,Peng Xue,Song Tian,Shulin Sun,Xue Lv
An adsorptive membrane filtration based on polyvinylidene fluoride (PVDF) with chitosan (CS) and carboxylated carbon nanotubes (CNTs-COOH) is prepared by method of phase conversion, and the PVDF-CS@CNTs-COOH membranes can effectively separate anionic and cationic dye wastewater. Compared to pure PVDF membranes, PVDF-CS@CNTs-COOH increases pure water flux from 36.39 (L·m −2 ·h −1 ) to 85.25 (L·m −2 ·h −1 ), an increase of nearly 230%. The membrane exhibits excellent rejection performance in the filtration of six types of dye wastewater. The modified membranes also performed well in terms of rejection of mixed anionic and cationic dyes and also have a high performance in recycling, with a flux of over 94% for both anionic and cationic dyes. In addition, the adsorption curve fitting results showed that the adsorption process was more consistent with the pseudo-second-order adsorption kinetic model and Langmuir mode.
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
Analytical Methods
·
2021
·Vol. 13
·期 42
·4994-5002
·
IF 2.896
Hao Guo,Lei Sun,Meng Yang,Mingyue Wang,Ning Wu,Tingting Zhang,Junye Zhang,Fan Yang,Wu Yang
In this work, a covalent organic framework (COF) TAPT-TFP-COF containing a triazine ring was prepared by a typical Schiff base condensation reaction of 1,3,5-tris-(4-aminophenyl)triazine (TAPT) and 1,3,5-triformyl phloroglucinol (TFP). The TAPT-TFP-COF and carboxyl-functionalized multi-wall carbon nanotubes (COOH-MWCNTs) were drip-coated on glassy carbon electrode respectively to develop a novel and simple electrochemical sensor in order to simultaneously detect dopamine (DA) and paracetamol (PA). COOH-MWCNTs interconnected the TAPT-TFP-COF and acted as bridges between the COF particles, which had a good synergistic effect and accelerated electron transfer. Under optimal conditions, linear responses were obtained over the concentration range 1–190 μM for DA and PA with limits of detection (LOD) of 0.14 μM and 0.19 μM, respectively. Furthermore, the fabricated sensor possesses outstanding repeatability and high selectivity, and can be applied for the determination of DA and PA in dopamine injection and acetaminophen drugs with satisfactory recoveries.
研究领域:
分析化学
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材料科学
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生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2021
·
IF 3.171
Dongze Ma,Ye Tian,Tiefei He,Xiaobiao Zhu
Novel magnetic nanoparticles (MNPs), Fe 3 O 4 @SiO 2 and Fe 3 O 4 @SiO 2 @PEG-(COOH) 2 , were prepared by loading different amounts of SiO 2 or/and PEG-(COOH) 2 onto Fe 3 O 4 nanoparticles, and their feasibility to be used as forward osmosis (FO) draw solutes was investigated. The characterization of the materials showed that, compared to normal Fe 3 O 4 nanoparticles, the modified MNPs exhibited enhanced dispersity and high osmotic pressure in aqueous solution. The FO experiment indicated that the synthesized draw solutes could obtain a water flux as high as 10 L∙m −2 ·h −1 with an aquaporin FO membrane. The optimal concentration of the added tetraethyl orthosilicate was 30% during the synthesis. The novel MNPs could be easily recovered from draw solutions by magnetic field, and the recovery rate of Fe 3 O 4 @SiO 2 and Fe 3 O 4 @SiO 2 @PEG-(COOH) 2 was 83.95% and 63.37%, respectively. Moreover, after 5 recycles of reuse, the water flux of Fe 3 O 4 @SiO 2 and Fe 3 O 4 @SiO 2 @PEG-(COOH) 2 as draw solutes still remained 64.36% and 85.26%, respectively. The experimental results demonstrated that the synthesized core–shell magnetic nanoparticles are promising draw solutes, and the Fe 3 O 4 @SiO 2 @PEG-(COOH) 2 was more suitable to be used as draw solute in FO process.
研究领域:
材料科学
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环境工程
·
化学工程
·
纳米技术
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DOI
高影响因子
FOOD CHEMISTRY
·
2023
·
IF 8.8
Rui Chen,Yajie Zhang,Zuwang Zhang,Lenan Yao,Lizhi Liu,Jianlong Wang,Rong Wang
Food packaging is now widely used in everyday life to protect food from certain environmental factors. In this work, we have successfully prepared a bacterial cellulose/chitosan-TPE-COOH composite film (BC/CS-TPE), which can achieve broad-spectrum killing of bacteria through a variety of antibacterial mechanisms and ensure the freshness of the beef. In this complex film, CS acts as “advance team”, responsible for breaking through the cell wall or outer membrane of bacteria, while the reactive oxygen species produced by photosensitizer under irradiation attacks bacteria, further increasing the destructive effect on the bacterial cell membrane. This allows the film to have outstanding antibacterial properties that can kill 10 8 CFU/mL pathogens in 10 min. At the same time, cell experiments and hemolysis experiments proved that the film has good biocompatibility. Therefore, BC/CS-TPE film, as the efficient functional food packaging film, has a broad future application prospect.
研究领域:
材料科学
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食品科学
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生物技术
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产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·124778
·
IF 7.5
Nanke Ma,Huiling Peng,Anqi Wei,Yuan Jin,Guangli Li
The extensive use of ciprofloxacin (CIP) has raised growing concerns regarding environmental pollution, food safety, and public health, thereby driving an urgent demand for rapid, sensitive and cost-effective detection methods. Herein, an electrochemical sensing platform is constructed by integrating MIL-101(Fe) with MWCNTs-COOH, which synergistically couples the effective analyte preconcentration and catalytic Fe–O active sites of MIL-101(Fe) with the exceptional conductivity and large surface area of MWCNTs-COOH. Notably, the reversible Fe 2+ /Fe 3+ redox cycle in MIL-101(Fe) facilitates rapid electron shuttling, further amplifying the electrochemical signal toward CIP oxidation. This dual-functional interface enables simultaneous preconcentration and signal amplification, yielding a broad linear response spanning 0.05–15 μM, accompanied by a high sensitivity of 5.6492 μA·μM −1 , as well as an ultralow LOD of 0.006 μM. Additionally, this sensor also demonstrates outstanding selectivity, good repeatability, excellent reproducibility, and durable stability, retaining approximately 96.1% of its initial current signal after 21 days of storage. Furthermore, to rigorously validate practical feasibility, acceptable recoveries between 92.9% and 105.3% were measured in honey, tap water, and CIP eye drops, demonstrating its versatility across food, environmental, and pharmaceutical matrices. Overall, this work establishes a design blueprint for high-performance electrochemical sensors based on MIL-series MOF/carbon composites, opening new avenues for rapid, on-site antibiotic monitoring to ensure food safety, environmental protection, and pharmaceutical quality control.
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Boyu Zhao,Zezhou Zhang,Wenyi Wang,Xiangdong Yang,Chennan Zhao,Xiuying Yang,Ao Shen,Meiqi Ye
A structurally stable AgCl-COOH MWCNT/PES composite membrane was designed and fabricated by combining phase conversion and post-treatment techniques, which can solve the serious membrane fouling in industrial wastewater treatment. The carboxylation of MWCNTs not only enhanced their dispersion but also facilitated their binding with silver chloride, resulting in a stable composite structure that significantly improved contaminant degradation capabilities. The post-treatment technique increased the membrane’s water purification flux by 150 % (reaching 520 L·m 2 ·h −1 ·bar −1 ) while maintaining a high BSA retention rate of 95 %. Additionally, the composite membrane demonstrated excellent photocatalytic antifouling properties, with a flux recovery rate of 91.8 % under UV irradiation, and exhibited more than 99 % inhibition of Escherichia coli. This method provides a scalable solution for enhancing the performance of PES membranes in wastewater treatment applications.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2019
·Vol. 166
·期 6
·B388
·
IF 3.12
Jingdang Chai,Jie Zhang,Yangping Wen,Lie Zou,Xinxin Zhang,Xing Xin,Muhan Zhou,Jingkun Xu,Ge Zhang
An electrochemical sensor based on PEDOT:PSS-β-CD-SWCNT-COOH/GCE for highly sensitive analysis of shikonin (SHI) in PBS buffer solution was reported. PEDOT:PSS-β-CD-SWCNT-COOH composite was obtained by using poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS), β-Cyclodextrin (β-CD) and carboxylated single-walled carbon nanotube (SWCNT-COOH) to modify glassy carbon electrode (GCE) and characterized by scanning electron microscopy and electrochemical impedance spectroscopies. In optimized conditions, PEDOT:PSS-β-CD-SWCNT-COOH had a high sensitivity to SHI and it could detect SHI in linear ranges 6 nM to 30 μM with a low detection limit of 1.8 nM. And a series of experiments showed that the modified electrode exhibited good repeatability, reproducibility, and selectivity to electrochemical determination of SHI.
研究领域:
分析化学
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生物医学工程
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材料科学
✓ 已验证
DOI
高影响因子
MICROCHEMICAL JOURNAL
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2020
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IF 3.594
Hao Guo,Tian Fan,Wenqin Yao,Wenhu Yang,Ning Wu,Hui Liu,Mingyue Wang,Wu Yang
Herein, a novel electrochemical sensor based on ZIF-67/MWCNT-COOH/Nafion composite was designed and prepared for simultaneous detection of 4-aminophenol (4-AP) and acetaminophen (AMP). The electrochemical behaviors of the 4-AP and AMP on the ZIF-67/MWCNT-COOH/Nafion electrode were explored via cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The results exhibited that the designed electrochemical sensor possessed superior electrocatalytic activity for 4-AP and AMP, which was attributed to the highly ordered porous structure of ZIF-67, the outstanding electrical conductivity and high electrocatalytic activity of MWCNT-COOH. Under optimization conditions, the DPV response of the prepared electrode depicted a wider linear response concentration range of 0.2 to 200 μM for 4-AP, and 0.1 to 100 μM for AMP, respectively. And the lower detection limits (LOD) of 0.01 and 0.07 μM were obtained for 4-AP and AMP, respectively. More importantly, the acquired electrode was applied to Yellow river water and Paracetamol tablets for analysis of 4-AP and AMP, which exhibited satisfying recovery of 98.2% ~ 106.7% for 4-AP and 94.7% ~ 99.6% for AMP, respectively. In a word, the constructed electrochemical sensing platform delivered a promising potential in real application.
研究领域:
分析化学
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环境科学
·
药物分析
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产品关联
DOI
高影响因子
Journal of CO2 Utilization
·
2019
·
IF 5.189
Qingqing Li,Xurui Zhang,Xiaodong Zhou,Qingyu Li,Hongqiang Wang,Jin Yi,Yuyu Liu,Jiujun Zhang
Electrocatalytic CO 2 reduction to produce low-carbon chemicals/fuels is one of the most important approaches for CO 2 emissions reduction and utilization. However, the insufficient catalytic activity, stability and selectivity of the electrocatalysts have been identified to be a major challenge. In this work, novel Bi-MWCNT-COOH/Cu catalysts are prepared via a facile co-electrodeposition technique on copper foil to obtain catalyst electrodes for selectively electro-catalyzing CO 2 reduction to produce formic acid (HCOOH). The as-prepared electrodes exhibited high catalytic activity, stability and selectivity toward the production of HCOOH. The faradaic efficiency for HCOOH production can reach values up to 91.7 % at ―0.76 V vs. RHE, with no obvious degradation after 12 h of continuous electrolysis. The proposed electrodeposition technique to produce composite catalyst electrodes is characterized by simplicity, rapidity, and cost-effectiveness, being promising for scaled-up industrial applications.
研究领域:
材料科学
·
电化学
·
催化
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产品关联
DOI
高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
·
2018
·Vol. 33
·期 2
·e4708
·
IF 3.581
Mingliang Ma,Yuying Yang,Dili Liao,Ping Lyu,Jinwei Zhang,Jianli Liang,Lizhi Zhang
A strategy has been developed for the synthesis, characterization and catalysis of magnetic Fe 3 O 4 /P(GMA-EGDMA)-NH 2 /HPG-COOH-Pd core-shell structure supported catalyst. The P(GMA-EGDMA) polymer layer was coated on the surface of hollow magnetic Fe 3 O 4 microspheres through the effect of KH570. The core-shell magnetic Fe 3 O 4 /P(GMA-EGDMA) modified by -NH 2 could be grafted with HPG. Then, the hyperbranched glycidyl (HPG) with terminal -OH were modified by -COOH and adsorbed Pd nanoparticles. The hyperbranched polymer layer not only protected the Fe 3 O 4 magnetic core from acid–base substrate corrosion, but also provided a number of functional groups as binding sites for Pd nanoparticles. The prepared catalyst was characterized by UV–vis, TEM, SEM, FTIR, TGA, ICP-OES, BET, XRD, DLS and VSM. The catalytic tests showed that the magnetic Fe 3 O 4 /P(GMA-EGDMA)-NH 2 /HPG-COOH-Pd catalyst had excellent catalytic performance and retained 86% catalytic efficiency after 8 consecutive 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
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2021
·
IF 4.539
Hao Guo,Tingting Zhang,Mingyue Wang,Lei Sun,Junye Zhang,Meng Yang,Fan Yang,Ning Wu,Wu Yang
In this work, a novel sensor based on gold nanoparticle-modified zirconium-metal-organic frameworks (MOF-801) and carboxyl-functionalized carbon nanotube (MWCNT-COOH) composite material was built successfully for electrochemical detection of guanine and adenine in DNA sample, which exhibits diverse advantages such as fast, convenience and high efficiency. Guanine and adenine were detected by the cyclic voltammetry (CV) and differential pulse voltammetry (DPV). Under the optimal conditions, MOF-801/MWCNT-COOH/ AuNPs/GCE delivered linear DPV responses to guanine in the range of 0.8 ~ 60, 60 ~ 180 μM and the adenine in the range of 0.8 ~ 60, 60 ~ 180 μM with the low detection limit of 0.09 μM for guanine and 0.08 μM for adenine, respectively. The advantages of this method include simplicity, rapidity, high sensitivity, good selectivity as well as low cost. The modified GCE was successfully applied to the analysis of guanine and adenine in DNA samples.
研究领域:
生物化学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2021
·
IF 8.742
Chi Wang,Xiaoxuan Zhao,Jinghui Wu,Xia Yang,Xiaochun Cui,Wenzhe Geng,Zhi Geng,Xianze Wang
Efficient utilization of renewable solar energy is attractive in the membrane separation process of water treatment. In this study, a series of tight reactive hybrid ultrafiltration membranes were fabricated by covalently grafting Ag@NH 2 -MIL-125 nanoclusters on the side chains of a poly(aryl ether sulfone) matrix containing trifluoromethyl and carboxyl groups. Due to the homogeneous introduction of functional nanoreactors with high-efficiency solar photocatalytic degradation ability, the prepared tight hybrid membranes could approach good self-cleaning anti-fouling properties under sunlight irradiation. And the optimal sample exhibited an excellent water flux recovery ratio of 99.1% after irradiated by 10 min simulated sunlight. Additionally, the tight reactive hybrid membranes displayed excellent anti-aging robustness via the use of a fluorine-containing poly matrix, maintaining the stable high pollutant retention rate during the long-term ultrafiltration separation process. This work provided a new strategy to fabricate high-performance solar-driven reactive hybrid membranes for ultrafiltration separation processes.
研究领域:
环境科学
·
材料科学
✓ 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）