Journal of Cleaner Production
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2022
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IF 11.072
Fan Bu,Wei Huang,Mo Xian,Xianlong Zhang,Fengbing Liang,Xiuchu Liu,Xiaoyan Sun,Dexin Feng
Quinolones (QNs) are widely used pharmaceuticals which have been detected in surface water and posed risks to human health. It is important and challenging to develop a novel adsorbent with faster kinetics, higher capacity and easy regeneration. In this work, we creatively designed and synthesized magnetic carboxyl-functionalized covalent organic frameworks (Fe 3 O 4 @COF-TpDBd) as a novel adsorbent for QNs. The adsorption performance and mechanism were investigated. The results showed that the electrostatic interactions between Fe 3 O 4 @COF-TpDBd and QN molecules varied with pH. Therefore, compared with most reported adsorbents, Fe 3 O 4 @COF-TpDBd showed significantly higher adsorption capacities and faster adsorption kinetics under pH-neutral conditions. The kinetics and isotherms experiments proved that the adsorption process was spontaneous and exothermic. The adsorbent can be easily separated from water through magnetism after adsorption. Moreover, the regeneration process can be performed by pH adjustment without any organic solvent or heating, which is more convenient and environmental-friendly than most reported adsorbents. The adsorption capacities remained above 80% after five successive adsorption-desorption cycles. Thus, Fe 3 O 4 @COF-TpDBd has the great potential as a novel adsorbent for QNs removal, which has faster kinetics, higher capacity and easy regeneration.
研究领域:
环境科学
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材料科学
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化学工程
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DOI
高影响因子
Frontiers in Chemistry
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2022
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IF 5.545
Ding Wen,Miao Qingzhen,Bao Xiuli,Wang Shiyuan,Lu Jing,Lyu Mingsheng,Wang Shujun
Furunculosis, which is caused by Aeromonas salmonicida, can induce septicemia, leading to the rapid death of fishes belonging to Salmonidae, Cyprinidae, and Fuscheridae, and lamprey. Targeting A. salmonicida, five DNAzyme sequences with the highest enrichment rates were selected through the Systematic Evolution of Ligands by Exponential Enrichment (SELEX). The enrichment rates were 34.78, 23.60, 8.91, 2.89, and 2.34%, respectively. The DNAzyme with the highest activity, named D-AS-2, showed specificity and sensitivity. D-AS-2 was combined with carboxyl-functionalized graphene to construct a biosensor, which showed good fluorescence response to scabies lesion samples. The diagnostic procedure was completed in <2 min and can be used for the on-site diagnosis of fish diseases. A low-cost, rapid, simple, and highly specific biosensor for the diagnosis of furunculosis was established based on DNAzyme and carboxyl-functionalized graphene.
研究领域:
水产养殖
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分子生物学
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生物传感器
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产品关联
DOI
PubMed
高影响因子
RSC Advances
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2024
·Vol. 14
·期 20
·14041-14050
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IF 3.9
Dongbo Xi,Ruipeng Chen,Shuyue Ren,Zhenhong Jia,Zhixian Gao
In the present study, we address the limitations of conventional surface-enhanced Raman scattering (SERS) techniques for sensitive and stable detection of melamine in food products, especially dairy. To overcome these challenges, we developed a novel SERS-active substrate by incorporating gold nanoparticles (AuNPs) onto carboxyl-functionalized two-dimensional (2D) MXene material doped with nitrides, specifically Au–Ti2N–COOH. Our strategy leverages the unique physicochemical properties of MXene, a class of atomically thin, 2D transition metal carbides/nitrides, with tunable surface functionalities. By modifying the MXene surface with AuNPs and introducing carboxyl groups (–COOH), we successfully enhanced the interaction between the substrate and melamine molecules. The carboxyl groups form hydrogen bonds with the amino groups on the melamine's triazine ring, facilitating the adsorption of melamine molecules within the ‘hotspot’ regions responsible for SERS signal amplification. A series of characterization methods were used to confirm the successful synthesis of Au–Ti2N–COOH composites.Using Au–Ti2N–COOH as the SERS substrate, we detected melamine in spiked dairy product samples with significantly enhanced sensitivity and stability compared to nitride-doped MXene alone. The detection limit in liquid milk stands at 3.7008 μg kg−1, with spike recovery rates ranging from 99.84% to 107.55% and an approximate RSD of 5%. This work demonstrates the effectiveness of our approach in designing a label-free, rapid, and robust SERS platform for the accurate quantitation of melamine contamination in food, thereby mitigating health risks associated with melamine adulteration.
研究领域:
材料科学
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分析化学
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食品安全
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
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2021
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IF 9.229
Siqi Zhuo,Xuehua Wang,Lingyu Li,Shan Yang,Yibing Ji
Combining chiral molecules and covalent organic frameworks (COFs) with ordered pores can result in chiral COFs, which may be employed in the fields of chiral chemistry. In this study, we constructed a novel carboxyl-functionalized COF TpBD-3COOH first and then integrated a chiral molecule, heptakis (6-amino-6-deoxy)-β-CD (Am7CD), into TpBD-3COOH to obtain TpBD-Am7CD. Comparing TpBD-3COOH with TpBD-Am7CD, it could be observed that chiral selectivities improved significantly after decorating TpBD-3COOH with Am7CD in the adsorption experiment. Meanwhile, TpBD-Am7CD exhibited similar chiral selective abilities as the previously reported β-CD COF when it was employed to adsorb amino acid enantiomers, while the content of Am7CD was much less than that in β-CD COF. This indicated that the framework of TpBD-3COOH enhanced the chiral selective ability of Am7CD, which would be a great chiral carrier material for further application. This work provides a new insight for establishing materials for application in the chiral recognition field. Besides, TpBD-Am7CD resulted in an insoluble powder, which endowed this material with the possibility to be an adsorbent and a stationary phase in chromatography.
研究领域:
材料科学
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化学
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分析化学
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Rui Li,Kai Zhang,Xi Yang,Rui Xiao,Yao Xie,Xihao Tang,Guang Miao,Jun Fan,Weiguang Zhang,Shengrun Zheng,Songliang Cai
Covalent organic frameworks (COFs) with designable structure and well-defined aperture are highly desired as novel adsorbents for elimination of dye pollution. Herein, a new carboxyl-functionalized covalent organic framework (TzDABA COF) with clover-like topology was synthesized by the condensation of 1,3,5-tris(4-formyl-phenyl) triazine (Tz) and 3,5-diaminobenzoic acid (DABA) under solvothermal conditions. The obtained TzDABA COF exhibited rapid adsorption kinetics and excellent adsorption capacities toward multiple cationic organic dyes including methylene blue (MB, 315 mg g −1 ), crystal violet (CV, 533 mg g −1 ) and malachite green (MG, 1168 mg g −1 ) owing to the formation of strong electrostatic interaction and π-π interaction between COF framework and organic dye molecules. Remarkably, with particular ABC stacking mode and an abundant of carboxyl functional groups integrated in the clover-like architecture, the anionic TzDABA COF could effectively separate organic dyes in different modes, representing the first case of carboxyl-functionalized clover-like COF for dye separation based on charge effect and size effect. This study paves a new pathway toward construction of carboxyl-functionalized clover-like COFs and reveals their desiring prospect in field of dyes separation and purification.
研究领域:
材料科学
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环境科学
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化学工程
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产品关联
DOI
高影响因子
CHEMOSPHERE
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2020
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IF 5.778
Zhaolin Du,Hongan Chen,Xiaoyan Guo,Li Qin,Dasong Lin,Lili Huo,Yanpo Yao,Zhihao Zhang
The study presented the successful microwave-assisted (MW-assisted) preparation of a novel adsorbent derived from rice straw (RS MW -AC) and explored its adsorption performance toward heavy metal ions from water. The RS MW -AC was rapidly synthesized through pretreatment and one step grafting via the MW-assisted approach. The quantitative predictive correlations between target performance of RS MW -AC and process parameters were obtained through the response surface methodology (RSM). Meanwhile, the optimal preparation process conditions were determined: NaOH solution concentration, 20%; MW irradiation temperature for pretreatment, 100 and 150 °C; MW irradiation time for pretreatment and grafting, 10 and 60 min; EDTAD-RS mass ratio, 3. The RS MW -AC showed a good adsorption of different heavy metal ions from water (152.39, 55.46, 52.91, 35.60 and 20.11 mg g −1 for Pb(Ⅱ), Mn(Ⅱ), Cd(Ⅱ), Cu(Ⅱ) and Ni(Ⅱ), respectively). The adsorption behaviors followed the Langmuir model and pseudo second-order kinetics model with a highly significant correlation. Also of note was that amino and carboxyl groups were successfully introduced on the rice straw based on characterization results. Furthermore, preparation mechanism was explored to reveal reasons why microwave irradiation could accelerate the preparation of the adsorbent; its adsorption process was dominated by electrostatic attraction and chelation. Finally, the study made the industrial application feasibility analysis of MW-assisted approach used for pretreatment and graft reaction of agro-waste biomass.
研究领域:
环境科学
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化学工程
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材料科学
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废物管理
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产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
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2022
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IF 7.392
Yingfa Liu,Zhongxiang Bai,Guo Lin,Yunqing Xia,Lifen Tong,Tianrui Li,Chenchen Liu,Shuning Liu,Kun Jia,Xiaobo Liu
Layer-by-layer (LBL) self-assembly is believed as a simple and versatile strategy to fabricate wastewater purification membranes, whose separation efficiency is highly dependent on the stability of the self-assembly membranes. In this work, a composite nanofiltration membrane was prepared using carboxyl-functionalized poly (arylene ether nitrile) (CPEN) as the substrate, on which the cross-linked nanostructures derived from tannic acid (TA), metal ions, and bovine serum albumin (BSA) were immobilized via the layer-by-layer self-assembly. Particularly, several interfacial interactions, including hydrogen bonding, metal ions coordination, and hydrophobic interaction, were explored to manipulate the surface structures, wettability, and pore morphology of composite membranes. Consequently, the optimized membrane exhibited a low pressure (0.09 MPa) driven dye permeability of 52.04 L m −2 h −1 bar −1 , as well as a high rejection rate for Congo Red (CR ∼ 99.9%) and Methylene Blue (MLB ∼ 99.8%), respectively. Thanks to the stable separation performance, structural stability, and dye removal, the protocol reveals in the current work would open new ways for the fabrication of water purification membranes.
研究领域:
材料科学
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环境工程
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化学工程
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纳米技术
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产品关联
DOI
高影响因子
ACS Applied Nano Materials
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2023
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IF 5.9
Hengqiang Zhao,Ran Miao,Lidan Zhang,Rongyu Wang,Wenhua Ji,Xiaobei Ning,Yingchao Lv,Shaojun Zong,Xiao Wang,Zhaoyu Qiao
The effective removal of hydrophilic pollutants is of vital significance for environmental protection mainly because of the low efficiency of traditional sewage treatment methods. In this work, the cyano-vinylene-linked covalent organic polymer was prepared using 2,2′,2′′-(benzene-1,3,5-triyl)triacetonitrile (BTNA) and 2,4,6-tris(4-formylphenyl)-1,3,5-triazine (TFPT) as the Knoevenagel reaction monomers. The cyano group was then hydrolyzed to obtain a carboxyl-functionalized covalent organic polymer (COP-COOH). With good surface area (73.9 m2 g–1) and large channel (∼3.82 nm), TFPT-BTAN-COP-COOH showed fast adsorption equilibrium and high adsorption capacity for tobramycin and ofloxacin via multiple-functional binding sites. Specifically, the electrostatic interaction between the carboxyl group and basic groups (e.g., amino, piperazine, and dihydropyridine) plays a critical role for the selective removal of tobramycin and ofloxacin. The binding energies of TFPT-BTAN-COP-COOH adsorbed tobramycin and ofloxacin calculated using the density functional theory are −59.83 and −35.63 kcal/mol, respectively. For other aminoglycoside and quinolone antibiotics, such as enrofloxacin, norfloxacin, neomycin, and streptomycin, the removal rate can reach over 95% within 30 min using TFPT-BTAN-COP-COOH as the adsorbent. This work explored a promising strategy for the elimination of hydrophilic organic pollutants during environmental remediation.
研究领域:
环境科学
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化学工程
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材料科学
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产品关联
DOI
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
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2024
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IF 6
Dan Wei,Qiao Deng,Jianliang Li,Jingjing Xu,Ming Guo,Huizhen Wu,Ju Zhang,Jianchang Jin,Xu Wang
Mycotoxins co-contamination in soybean poses great risks to human health, however, due to their diverse structures, it is difficult to simultaneously extract and detect these multi-mycotoxins. By incorporating modification of hydrophilic carboxyl groups with the hydrophobic properties of covalent organic frameworks, a stable cubic carboxyl-functionalized magnetic amide-linked covalent organic framework were fabricated, characterized and utilized as adsorbents for magnetic solid phase extraction (MSPE) of eleven frequently detected mycotoxins from soybeans followed by HPLC-MS/MS analysis. The key MSPE parameters were screened using the Plackett-Burman design and optimized with the Box-Behnken design for response surface methodologies. Under the optimal experimental conditions, the linear range was 0.2–50 μg/kg, the limits of detection were 0.1–1.4 μg/kg. The established method was applied for the soybean analysis with satisfactory recoveries (70.8–108.3%) and precision (intra- and inter-relative standard deviations of 2.1–9.2% and 1.6–11.1%, respectively). With proper modification, this method may have great application potential for simultaneously analyzing and monitoring the multi-mycotoxin contamination in foods to ensure consumer safety and public health.
研究领域:
分析化学
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食品科学
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毒理学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2023
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IF 8.2
Qingqing Wang,Xiaoli Jia,Mingchao Jin,Ruijie Guo,Baolong Niu,Hong Yan,Huifang Wang
In this study, a kind of magnetically recyclable adsorbent for dyes was synthesized by grafting diethylenetriamine pentaacetate acid (DTPA) to the composite of Fe 3 O 4 microspheres and crosslinked chitosan (CS). The microstructures, molecular structure, crystal structure, and magnetic hysteresis loops of the chitosan matrix adsorbent before and after grafting was characterized. The results suggested that DTPA was covalent bonded with the composite of Fe 3 O 4 microspheres and chitosan. The modified composite has larger specific surface area and can realize rapid solid-liquid separation. Batch experiments were conducted to optimize the parameters affecting the adsorption of methyl orange (MO). The adsorption process could be better described by pseudo-second-order kinetics model and Langmuir isotherm equation, and its saturated adsorption capacity of the modified adsorbents was 1541.5 mg·g −1 at 25 °C, which was 1.40 times of that the unmodified adsorbent (1104.1 mg·g −1 ). The obtained values of the thermodynamic parameters indicated that the adsorption was a spontaneous process. The regeneration experiment proved the stability and reproducibility of the adsorbent even after five cycles of adsorption-desorption. The primary adsorption mechanism was electrostatic interaction and hydrogen bonding. The adsorbent could be potentially applied for removing dyes from wastewater in wide pH of range, especially acid wastewater.
研究领域:
环境科学
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化学工程
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材料科学
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水处理
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产品关联
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2019
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IF 3.375
Wei Qu,Deliang He,Yanni Guo,Yining Tang,Jun Shang,Lei Zhou,Rilong Zhu,Ren-Jie Song
Water hyacinth was modified by citric acid to prepare a carboxyl-functionalized water hyacinth (CWH) adsorption material. The effects of pH, contact time, amount of the adsorbent, initial concentration, and temperature on the adsorption of heavy metal ions were investigated. In the experimental study, the optimal pH values of Ni2+, Cu2+, and Cr6+ in the CWH adsorption solution were 7.5, 6.0, and 5.0; the optimum contact times were 300, 180, and 120 min; and the optimum adsorbent dosages were 0.65, 0.50, and 0.40 g, respectively. The adsorption processes of Ni2+, Cu2+, and Cr6+ by CWH are in accordance with the quasi-second-order kinetic model and Langmuir model, with the maximum adsorption capacity being 59.64, 77.98, and 96.89 mg/g, respectively. The thermodynamic model shows that it is an endothermic spontaneous process. Even after five adsorption–desorption cycles, the removal ratios of Ni2+, Cu2+, and Cr6+ by CWH remained about 55.23, 65.63, and 71.46%, respectively. The structure of the water hyacinth before and after modification was characterized by scanning electron microscopy, Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy. The results indicate that the surface of CWH was rough and the number of microporous increased and water hyacinth has been successfully carboxylated. The abovementioned results indicate that CWH can be used as an environmentally friendly and economical adsorbent.
研究领域:
环境科学
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材料科学
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化学工程
✓ 已验证
DOI
高影响因子
Acta Biomaterialia
·
2021
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IF 8.947
Kaijun Gou,Yumei Wang,Xianmou Guo,Yuxin Wang,Yan Bian,Haiqing Zhao,Yingyu Guo,Yue Pang,Linlin Xie,Sanming Li,Heran Li
The purpose of this study was to investigate the delivery of poorly water-soluble non-steroidal anti-inflammatory drugs (NSAIDs) by carboxyl-functionalized mesoporous silica nanoparticles (MSN-COOH) with high specific surface area (S BET ). In this study, MSN-COOH was prepared by collaborative self-assembly using cetyltrimethylammonium bromide (CTAB) as template and hydrolysis (3-triethoxyl-propyl) succinic anhydride (TESPSA) as co-structure auxiliary directing agent (CSDA). The drug delivery systems were constructed with NSAIDs including Nimesulide (NMS) and Indomethacin (IMC) as model drugs. Moreover, the characterization techniques, hemolysis and bio-adsorption testes, in vitro drug release and in vivo biological studies of MSN-COOH were also carried out. The characterization results showed that MSN-COOH is spheres with clearly visible irregular honeycomb nanopores and rough surface (S BET : 1257 m 2 /g, pore volume (V P ): 1.17 cm 3 /g). After loading NMS/IMC into MSN-COOH with high drug loading efficiency (NMS: 98.7 and IMC: 98.2%), most crystalline NMS and IMC converted to amorphous phase confirmed using differential scanning calorimeter (DSC) and X-ray power diffraction (XRD) analysis. Meanwhile, MSN-COOH significantly increased the dissolution of NMS and IMC compared with non-functionalized mesoporous silica nanoparticles (MSN), which was also confirmed by wettability experiments. The results of in vivo biological effects showed that MSN-COOH had higher bioavailability of NMS and IMC than MSN, and exerted strong anti-inflammatory effects by delivering more NMS and IMC in vivo . Statement of significance This study successfully prepared MSNs-COOH (mesoporous silica nanoparticles modified with negatively charged carboxyl groups on the surface and in the pores) with high specific surface area and pore volume by using the negatively charged carboxyl group (hyd-TESPSA) and the positively charged CTAB self-assembled through electrostatic attraction under alkaline conditions. The drug delivery systems were constructed with Nimesulide (NMS) and Indomethacin (IMC) as model drugs. The results showed MSNs-COOH had high drug loading capacity and also exhibited good in vitro drug release properties. Interestingly, NMS loaded MSNs-COOH also had a potential pH responsive release effect. In vivo biological studies revealed that NMS/IMC loaded MSNs-COOH could evidently improve the bioavailability and played the strong anti-inflammatory effects.
研究领域:
药剂学
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纳米技术
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药物递送系统
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药理学
✓ 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）