CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Jing Jin,Yu Ren,Hua Zhou,Yujie Hou,Peng Jin,Yonghua Zheng,Zhengguo Wu
Berries, being juicy and thin-skinned, are prone to mechanical damage and microbial contamination during transportation. Therefore, developing functional cushioning packaging becomes crucial to minimize product losses. Herein, modified MXene was used to immobilize silver nanoparticles (AgNPs) and graft trans -2-hexenal (E2H), synthesizing MXene-NH 2 /AgNPs/E2H preservative. Subsequently, the CPMAE aerogel buffer packaging was obtained by MXene-NH 2 /AgNPs/E2H, chitosan and polyvinyl alcohol, and then using to the strawberry preservation. The physical entangling, electrostatic and hydrogen bonding between chitosan and polyvinyl alcohol, as well as the interaction with MXene-NH 2 /AgNPs/E2H endow CPMAE aerogel excellent buffering properties. Besides, only about 67.40 % of E2H and 5.80 % of AgNPs were released from the CPMAE aerogel after 7 days. Although the immobilization of MXene-NH 2 significantly reduced the release rate of AgNPs and E2H, the CPMAE aerogel still had excellent antioxidant (36.5 μg FeSO 4 /5 mg) and antimicrobial (reaches 99 %) capabilities. Moreover, these features enable the CPMAE aerogel buffer packaging to have an efficient fresh-keeping effect on strawberries and extend the storage time at 4 ℃ to 12 days. This study offers a novel approach for applying chitosan aerogel in buffer and antimicrobial packaging for berries.
研究领域:
食品科学
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材料科学
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生物工程
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DOI
高影响因子
RSC Advances
·
2022
·Vol. 12
·期 9
·5062-5071
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IF 4.036
Zhenshan Li,Qi Li,Rong Jiang,Yan Qin,Yan Luo,Jinsong Li,Wei Kong,Zhiguo Yang,Chao Huang,Xin Qu,Tao Wang,Lin Cui,Gang Wang,Shengchao Yang,Zhiyong Liu,Xuhong Guo
Cu(II) ions are one of the most common forms of copper present in water and can cause bioaccumulation and toxicity in the human body; therefore, sensitive and selective detection methods are required. Herein, a copper ion sensor based on a UiO-66-NH2/ZnO composite material is proposed. The UiO-66-NH2/ZnO nanocomposite was prepared by an ultrasonic mixing method. The morphology and structure of the nanocomposite were studied by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD). The sensitivity to Cu(II) is 6.46 μA μM−1 and the detection limit is 0.01435 μM. The composite material is rich in –OH and –NH2 groups, which are active sites for Cu(II) adsorption. The UiO-66-NH2/ZnO-modified electrode has good repeatability and anti-interference ability. The sensor was successfully used for the determination of Cu(II) in an actual water sample.
研究领域:
环境科学
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分析化学
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高影响因子
TALANTA
·
2020
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IF 5.339
Min Wang,Lingyi Zhang,Yameng Zhao,Weibing Zhang
In this study, a new molecularly imprinted material, MIP@UiO-66-NH 2 , was synthesized with glutathione (GSH) as template and mesoporous metal organic framework (UiO-66-NH 2 ) as matrix. The molecularly imprinted polymer was modified on the surface and into the pores of the UiO-66-NH 2 by surface molecular imprinting method with thin polymer layer. Based on high specific surface area (1091.93 m 2 g −1 ) and appropriate pore size (35 nm) of the ordered mesoporous UiO-66-NH 2 , the adsorption capacity for GSH reached 94.43 mg g −1 , and the adsorption equilibrium could be achieved within 30 min. The adsorption isotherm data of MIP@UiO-66-NH 2 could be described well by Freundlich model and the kinetic data complied well with pseudo-second-order model. In addition, the MIP@UiO-66-NH 2 showed low adsorption capacity to GSH structural analogs (Q L-cys = 6.51 mg g −1 ), suggesting great selectivity for GSH recognition. Finally, the MIP@UiO-66-NH 2 was successfully applied for selective separation of GSH from BSA, skim milk and egg white tryptic digest.
研究领域:
分析化学
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材料科学
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生物化学
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高影响因子
PROGRESS IN ORGANIC COATINGS
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2025
·
IF 7.3
Yuanxia Wang,Xiangju Liu,Nazhen Liu,Chen Guo,Yongchao Dai,Ziang Su,Quantong Jiang,Xia Zhao,Baorong Hou
Nacre-inspired coatings reinforced with amino-functionalized boron nitride nanosheets (NH 2 –BNNSs) were developed in this work. A hierarchical “brick and mortar” structure, where NH 2 –BNNSs act as “bricks” and epoxy resin act as “mortar”, was developed attributed to electrostatic repulsion between NH 2 –BNNSs modified by sodium carboxymethyl cellulose. In nacre-inspired coatings, penetration path of corrosive species must travel to reach metal surface was extended significantly, leading to hindered metal corrosion. Electrochemical impedance spectroscopy demonstrated | Z | f =0.01 Hz of aluminum alloy (AA5052) covered by nacre-inspired coating (NC-20) was 4 orders of magnitude higher than that of AA5052 covered by pure epoxy coating after 84 days of exposure in NaCl solution.
研究领域:
材料科学
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表面工程
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腐蚀与防护
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高分子复合材料
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纳米复合材料
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高影响因子
SURFACE & COATINGS TECHNOLOGY
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2025
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IF 6.1
Huaiyin Chen,Mingzu Xu,Jinbo Wang,Congxiang Li,Xiaolin Liu,Meihua Wu,Wei Wang,Longmin Liu,Yongzhao Li,Weihe Yu,Yuekun Lai,Weilong Cai
In this work, amphiphilic Janus F-SiO 2 -NH 2 particles were prepared through step-by-step modification of SiO 2 particles inlaid in and released from paraffin microspheres by fluorosilane and aminosilane respectively, and further modified waterborne epoxy (WEP) coating. The morphology, structure, composition, and surface wettability of the prepared particles as well as the mechanical properties and corrosion resistance were investigated. The results indicate that the modified coating gained the improved mechanical properties and anti-corrosion performance. Electrochemical impedance spectroscopy tests show that after immersion in 3.5 wt% NaCl solution for 15 days, the impedance modulus at low frequency of F-SiO 2 -NH 2 modified WEP coating was above 10 6 Ω∙cm 2 , two orders of magnitude higher than that of WEP coating. The amphiphilic Janus F-SiO 2 -NH 2 particles not only improved the interfacial compatibility and penetration resistance through the good dispersibility, hydrophobic groups and cross-linking with epoxy resin matrix, but also oriented adsorbed on steel surface to form protective hydrophobic layers. This work provides a simple design approach for constructing highly corrosion-resistant waterborne coatings, which has a certain promoting effect on the development of environmentally friendly high-performance anti-corrosion coatings.
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高影响因子
ELECTROCHIMICA ACTA
·
2026
·
IF 5.8
Senyang Song,Fangfang Shang,Mengwei Yin,Qianqian Wang,Yi Liu,Ran Bi,Xiaoyan Ma
Gallic acid (GA) chelates with exposed metal active sites of Ni/Co-DABD MOF, effectively protecting metal ions and elevating MOF coordination stability. • The GA-modified Ni/Co-DABD MOF@NH₂-MXene composite electrode delivers a high specific capacitance of 2044 F g -1 at 1 A g -1 with superior rate capability and cycling durability. • GA modification strengthens the interfacial synergy between MOF and NH₂-MXene, significantly boosting charge transfer efficiency and structural stability of the composite. The limited active sites and poor electrochemical structural stability of metal-organic frameworks (MOF) severely limit their application in electrochemical energy storage. In this study, we used the acid properties of gallic acid (GA) as an etching agent to etch MOF surface active sites. Subsequently, the protonated GA is further chelated with the exposed metal active site, which can effectively protect the metal ions. At the same time, GA provides a large number of phenolic hydroxyl groups, which greatly improves the coordination stability of MOF. A new MOF@MXene composite electrode material was obtained by solvothermal synthesis of GA-modified MOF and aminated MXene. The electrochemical test results show that the new MOF@MXene composite electrode material synthesized by this scheme has high specific capacitance and high rate stability. The functional modification of MOF by GA greatly improves the synergistic binding performance between MOF and MXene, and thus significantly improves the electrochemical stability of composite electrode materials. The mechanism of the electrochemical reaction was investigated by in-situ X-ray diffraction and theoretical calculation. In this paper, the functional mechanism of polyphenols on MOF is described, which provides a new idea for the electrochemical application of MOF. The GA-modified Ni/Co-DABD MOF@NH₂-MXene composite electrode delivers a high specific capacitance of 2044 F g -1 at 1 A g -1 with superior rate capability and cycling durability. Download: Download high-res image (296KB) Download: Download full-size image
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
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IF 9.1
Ruiying Xie,Feng Zhang,Guishan Hu,Mengzhen Chen,Huixian Wang,Xiaoquan Feng,Xuerui Wang,Yatao Zhang,Meixia Shan
The widespread presence of toxic nitroaromatic compounds in industrial effluents demands advanced remediation strategies. Catalytic reduction is highly effective, while the practical application of powdered catalysts is limited by challenges in recovery and reuse. To overcome this issue, macroscopic Pd@NH 2 -MIL-101/AOPIM-1 porous composite beads were fabricated via a phase inversion method, combining the high surface area of NH 2 -MIL-101 with the excellent processability of amidoxime-functionalized polymers of intrinsic microporosity (AOPIM-1). The incorporation of NH 2 -MIL-101 enriches the composite with amino functional groups, thereby enhancing the adsorption and local enrichment of reactants. Furthermore, these nitrogen-rich sites provide robust anchoring points for the uniform dispersion of Pd nanoparticles, collectively boosting catalytic activity and structural stability. The beads exhibited outstanding catalytic activity for the reduction of nitroaromatics, achieving 99% conversion of 4-nitrophenol (4-NP) within 5 min. The catalyst also maintained excellent structural stability over multiple cycles and allowed easy separation. Furthermore, the catalyst exhibited over 90% efficiency in the reduction of other common nitroaromatic pollutants, underscoring its versatility and applicability in wastewater treatment. This work provides a sustainable and practical solution for wastewater treatment by transforming hazardous contaminants into valuable aromatic amines using an easily separable catalytic system.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2026
·
IF 9.1
Qianwen Wang,Mengjie Li,Dandan Zhang,Mingmin Jia,Xiong-Fei Zhang,Jianfeng Yao
A mixed-matrix membrane was developed by combining defect-engineered UiO-66-NH 2 metal-organic framework (MOF) and nanocellulose. A formic acid-modulated solvothermal method creates linker-missing defects in UiO-66-NH 2 , increasing its specific surface area from 540 to 775 m 2 g −1 . The hydroxyl/carboxyl-rich cellulose forms a robust hydrogen-bonding network with amino groups and defect sites on the MOF, suppressing interfacial defects. The optimized membrane achieves a CO 2 permeability of 303.7 Barrer with CO 2 /N 2 and CO 2 /CH 4 selectivities of 92.3 and 124.0, respectively. This enhancement arises from optimized adsorption sites in the defective MOF and superb MOF-cellulose interface capability coupled with efficient CO 2 transfer through the cellulose network. Moreover, the membrane exhibits good stability over 500 h tests, offering a promising approach to high-performance gas separation.
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高影响因子
MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 10
·650
·
IF 5.4
Kang Yujiao,Guo Hao,Yang Zeyun,Deng Meng,Xin Yu,Ren Jia,Wang Mingyue,Yang Wu
As a third-generation fluoroquinolone antibiotic, levofloxacin (LEV) residue in biological and environmental samples has aroused widespread public concern. In this work, NH 2 -UiO-66 was in-situ synthesized via a solvothermal route on MoO 3 surface. Subsequent covalent modification with ferrocene (Fc) afforded a ratiometric electrochemical sensor denoted as Fc-NH 2 -UiO-66/MoO 3 /GCE for LEV quantification. The anchored Fc units not only construct an internal self-calibration system with stable reference signal to greatly improve detection reliability, but also boost the electrical conductivity of the composite electrode. The as-fabricated sensor exhibits favorable analytical performance toward LEV, featuring a wide linear range of 0.6 µM-600 µM and a low limit of detection of 0.032 µM, together with stable anti-interference capability. Moreover, the developed electrode was successfully employed to determine LEV in practical specimens including serum, urine and commercial LEV eye drops. This reliable and sensitive analytical strategy exhibits promising prospects for clinical diagnosis and pharmaceutical analysis. Graphical abstract
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高影响因子
CHEMISTRY OF MATERIALS
·
2025
·
IF 7
Dan Zhao,Wenjie Jiang,Wang Zhang,Chenhao Zhang,Wenjun Zhao,Zhizhou Chen,Yanan Liu,Jiajie Xu
Antibiotic overuse has led to drug-resistant bacteria and superbugs, necessitating urgent strategies. MOFs, although they are potential antimicrobial carriers, have limitations at low doses and in single therapy. Here, by adding different amounts of CTAB in the precursor solution, two different morphologies of NH2-MIL-101(Fe)@Ag nanoagents were obtained, namely, NH2-MIL-101(Fe)@Ag-1 (Cube) and NH2-MIL-101(Fe)@Ag-2 (Octahedron). Antibacterial experiments showed that these two nano reagents with both photothermal and photodynamic effects exhibited nearly 100% bactericidal rate against high concentrations of Staphylococcus aureus and Escherichia coli (107 CFU/mL) within 15 min. The combination of inactivation of intracellular proteins and disruption of cell membranes induced by Ag ions and high temperature resulted in NH2-MIL-101(Fe)@Ag 100% in an octahedron showing durable and superior bactericidal performance at low doses (64 μg/mL), which is much better than other antibacterial reagents. Furthermore, the enhanced mechanism was discussed in detail by DFT calculations. A special electron transfer process occurred between Ag and NH2-MIL-101 (Fe) under 880 nm NIR irradiation, which promoted the generation of ROS and enhanced the antibacterial effect. In addition, these two nano reagents have good therapeutic effects on wound healing in vivo due to silver ions and photothermal effects.
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高影响因子
GREEN CHEMISTRY
·
2025
·
IF 9.2
Xiaoyang Sun,Linyu Nian,Huimin Qi,Mengjun Wang,Dechun Huang,Chongjiang Cao
Biomimetic mineralization is a crucial biotechnology for encapsulating enzymes within metal–organic frameworks (MOFs). While this technique is extensively employed in solvent-based systems, its applicability in mechanochemical systems remains to be explored. In addition, the structural units of MOF composition may significantly influence this process. In this study, we reported that dodecanuclear zirconium clusters act as precursors to facilitate the mechanochemical process of biomimetic mineralization, leading to the construction of cellulase@UiO-66-NH2 (with cellulase abbreviated as Cel). The results demonstrate that dodecanuclear zirconium clusters promote the biomimetic mineralization of Cel@UiO-66-NH2, preventing enzyme degradation by organic solvents. This approach leads to a 20% increase in enzyme activity per unit mass and a 78% improvement in the encapsulation rate. It also enhances catalytic efficiency and substrate affinity compared with Cel@UiO-66-NH2 synthesized with hexanuclear zirconium clusters. The biomimetic mineralization was attributed to the increased local concentration of structural units of MOFs surrounding Cel, as well as transformations in chemical bonding and alterations in enzyme structure. We demonstrated the stability of Cel@UiO-66-NH2 compared to traditional physical adsorption methods and explored its applications in the saccharification of carboxymethylcellulose and microcrystalline cellulose and the high-temperature sequential extraction of polysaccharides from Naematelia aurantialba. Our results revealed that Cel@UiO-66-NH2 retained over 50% of its catalytic activity after eight cycles of carboxymethylcellulose saccharification and maintained 50.9% enzyme activity after five cycles of treatment with microcrystalline cellulose. In addition, we achieved a polysaccharide extraction yield of 10.35% at 70 °C.
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高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2017
·
IF 3.615
Linlin Wan,Chen Zhou,Kai Xu,Bo Feng,Aisheng Huang
Compact and phase-pure UiO-66-NH 2 membranes were synthesized on the 3-aminopropy-ltriethoxysilane (APTES) modified macroporous Al 2 O 3 tubes through a repeated synthesis strategy. APTES acts as a molecular linker for anchoring the metal ions onto the support surface to promote the nucleation and the crystallization of UiO-66-NH 2 membrane. Therefore, well-intergrown UiO-66-NH 2 membranes could be prepared through a repeated synthesis method on the APTES-modified macroporous Al 2 O 3 tubes. The developed UiO-66-NH 2 membranes were evaluated for seawater desalination by pervaporation . It is found that the UiO-66-NH 2 membranes show high desalination performances attributing to the narrow pore size which is exactly in between the size of water molecules and hydrated ions . With increasing the feed temperature from 318 to 363 K, the water fluxes increase from 1.5 to 12.1 kg m −2 h −1 , with ions rejections of above 99.7%. Further, the UiO-66-NH 2 membranes display high stability for a long time in seawater desalination, which is very promising for seawater desalination.
研究领域:
材料科学
·
膜技术
·
脱盐
·
环境工程
·
纳米技术
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DOI
高影响因子
危险品化学品经营许可证（带存储）