CHEMICAL ENGINEERING JOURNAL
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2025
·
IF 13.2
Tiantian Wang,Lingfeng Zhao,Guanhua Liu,Xiaoyang Yue,Xiaobing Zheng,Li Ma,Yunting Liu,Mimi Chen,Yanjun Jiang
The concentration of micropollutants (MPs) in water is low, but they are highly harmful and difficult to remove. Biocatalytic membrane combines membrane separation and enzyme catalysis thus being efficient. Herein, a sulfonated covalent organic framework (SCOF) was grown in situ on the surface of a hydrolyzed polyacrylonitrile (HPAN) membrane coated with a polydopamine (PDA) layer to provide a defect-free substrate layer for the pressure-assisted self-assembly of rigid UiO-66-NH 2 nanoparticles and organic laccase with electrostatic attraction. In the obtained multilayer loose biocatalytic membrane, UiO-66-NH 2 nanoparticles can provide trans -membrane mass transfer channels for water molecules and intercept pollutants, and laccase can degrade MPs and eliminate defects among UiO-66-NH 2 nanoparticles. By optimizing the membrane preparation conditions, the biocatalytic membrane has a bisphenol A (BPA) removal rate of 96.9%. The removal rate of dyes can reach more than 98% with a pure water permeance of 211.3 LMH/bar, and the generally < 20% salt removal efficiency endows the membrane with good dye/salt separation ability. At the same time, the membrane has BPA removal rate of over 80% under pH of 4 ∼ 11 and feed BPA concentration of 4–100 mg/L, respectively. The membrane initial activity can maintain more than 90% after 10 days of storage in aqueous solution. After 7 times of reuse, the removal rate of BPA was still more than 60%. Overall, this study opens up a convenient avenue for the facial fabrication of multilayer biocatalytic membranes for efficient MPs removal.
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高影响因子
ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
YinZuo Wu,Guoqian Xu,HaiBang Zhang,Ziyue Fu,Hedong Jiang,Pingchun Guo,Yanxiang Wang,Shijin Yu,Hua Zhu
Solid electrolytes offer the advantages of a wide temperature operating range, high safety, and excellent cycling stability. However, their commercialization is hindered by challenges such as low ionic conductivity, high interface impedance, and poor mechanical properties. In this study, a metal-organic framework material UiO-66 was synthesized and subsequently modified with -NH 2 and -NO 2 functional groups. The modified material was blended with poly(ethylene oxide) (PEO) to produce a composite polymer solid electrolyte, which was used to assemble a Li||Li symmetric battery. The experimental findings revealed that UiO-66-NH 2 /PEO exhibited high ionic conductivity of 6.79 × 10⁻⁴ S/cm at 60°C, a high Li + transference number of 0.49, and a wide electrochemical window of 5.1 V. Notably, its lithium-ion transference number was higher than that of UiO-66/PEO (0.27) and UiO-66-NO 2 /PEO (0.36). Moreover, UiO-66-NH 2 /PEO demonstrated improved interface compatibility and lower interface impedance, presenting a promising material option for advancing the field of all-solid-state lithium-ion batter.
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MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Ziwei Guo,Jingce Bi,Yi Wang,Xiaoguang Sang,Xia Zhang,Zhuopeng Wang,Yide Han
Metal-organic framework materials (MOFs) have shown great promise in electrochemical sensing applications due to their high specific surface area, excellent thermal and chemical stability. However, the practical application of MOFs in non-enzymatic electrochemical glucose sensing is limited by their inherent drawbacks, such as poor electrical conductivity and low mass transfer efficiency. To overcome these challenges, we successfully synthesized a Co@UiO-66-NH 2 /acetylene black (Co@UiO-66-NH 2 /AB) nanocomposite through a dual-solvent method followed by mechanical grinding method and applied it as an efficient electrochemical glucose sensor. Experimental results demonstrate that the Co@UiO-66-NH 2 /AB nanocomposite exhibits significantly enhanced electrochemical sensing performance for glucose detection, compared to pure Co@UiO-66-NH 2 . Specifically, 0.5Co@UiO-66-NH 2 /AB nanocomposite achieves sensitivities of 89.60 μA·mM −1 ·cm −2 and 37.65 μA·mM −1 ·cm −2 in the linear ranges of 0–800 μM and 800–6000 μM, respectively, with a low detection limit of 2.31 μM and a rapid response time of approximately 3.6 s. Additionally, 0.5Co@UiO-66-NH 2 /AB nanocomposite demonstrates remarkable stability, with the current signal remaining nearly constant over an extended period of 3000 s. This enhanced performance can be attributed to the abundant active sites provided by Co@UiO-66-NH 2 , coupled with the enhanced electrical conductivity imparted by acetylene black. Moreover, the sensor exhibits minimal interference from common interfering substances, such as uric acid, dopamine hydrochloride, and ascorbic acid, was observed during glucose detection. Meanwhile, the 0.5Co@UiO-66-NH 2 /AB nanocomposite was also applied for the rapid determination of glucose in bovine serum albumin. Consequently, the Co@UiO-66-NH 2 /AB nanocomposite holds great potential for application in electrochemical biosensors.
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JOURNAL OF CHROMATOGRAPHIC SCIENCE
·
2025
·Vol. 63
·期 5
·
IF 1.3
Yang Qinghua,Deng Honghai,Shi Yilan,Qiu Qianying,Wang Jinxin,Ping Wenhui,Gu Jun,Zhang Weibing
A fast, simple and effective method was developed and validated for determination of 11 fungicides using magnetic solid-phase extraction with NH2-Fe3O4@GO (graphene oxide) combined with gas chromatography–triple quadrupole mass spectrometry (GC–MS/MS). To carry out the extraction of the fungicides from samples, NH2-Fe3O4@GO nanocomposites were synthesized and characterized by scanning electron microscopy, Fourier transform infrared spectroscopy and X-ray diffraction. The target analytes were extracted on NH2-Fe3O4@GO and then eluted by ethyl acetate and acetonitrile (1:1 v/v). Finally, the extraction solvent concentrated by nitrogen blowing was analyzed by GC–MS/MS, which demonstrated good linearity between 0.05 and 5.0 mg L−1. The limits of detection (signal-to-noise ratio = 3) and the limits of quantification (signal-to-noise ratio = 10) for the 11 fungicides ranged from 1.0 to 3.5 and 3.0 to 10.5 μg kg−1, respectively. The accuracy and precision of the proposed method were evaluated by measuring tagged samples; the recoveries and relative standard deviations ranged from 75.3% to 103.9% and 2.19% to 4.68%, respectively. The utility of the adsorbent was demonstrated to determine trace fungicides in fresh fruit juice samples.
研究领域:
分析化学
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食品安全
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PubMed
高影响因子
ENZYME AND MICROBIAL TECHNOLOGY
·
2018
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IF 2.932
Xueqiao Xie,Peng Luo,Juan Han,Tong Chen,Yun Wang,Yunfeng Cai,Qian Liu
In the present study, a novel and efficient immobilization for horseradish peroxidase (HRP) had been developed by using 6-arm magnetic composite microsphere (Fe 3 O 4 @PAA-6-arm-PEG-NH 2 ) containing 6-arm polyethylene glycol (6-arm-PEG-NH 2 ) and Fe 3 O 4 . The morphology and chemical properties of Fe 3 O 4 @PAA-6-arm-PEG-NH 2 were characterized by transmission electron microscopy (TEM), Fourier transform infrared spectra (FTIR), X-ray powder diffraction (XRD), vibrating sample magnetometer (VSM) and thermogravimetric analysis (TGA). The immobilization conditions and loading capacity of the carrier toward HRP were also investigated. According to the results, the optimum immobilization conditions were as follows: glutaraldehyde concentration of 0.10 mol L −1 , the carrier concentration of 7 mg L −1 , the temperature of 35 °C and immobilization time of 180 min. The loading capacity of the immobilized HRP arrived to 139.82 mg g −1 (RSD = 0.87%). Compared with free HRP, the stability of the immobilized HRP had been enhanced in a wide range of temperature and pH. The activity of the immobilized HRP retained 71.05% of its initial activity after 60 days storage. It was also found that the activity of the immobilized HRP retained 61.06% of its initial activity after eight times of successive reuse. The immobilized HRP could hydrolyze phenol to 94.4% within 10 min. It proved that the immobilized HRP could improve the performance of HRP, which had a good prospect in biological application.
研究领域:
生物化学
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材料科学
·
酶工程
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Frontiers of Chemical Science and Engineering
·
2024
·Vol. 18
·期 11
·1-11
·
IF 4.3
Fu Huiyu,Wu Jiewen,Liang Changhai,Chen Xiao
With the advantages of low raw material cost and 100% atom utilization, the synthesis of high value-added chemical product cyclic carbonates by the cycloaddition of CO 2 to epoxides has become one of the most prospective approaches to achieve the industrial utilization of CO 2 . In the reported catalytic systems, the complexity of the catalyst synthesis process, high cost, separation difficulties, and low CO 2 capture limit the catalytic efficiency and its large-scale application. In this paper, Ag nanoparticles loaded on polyethyleneimine (PEI)-modified UiO-66-NH 2 (Ag/PEI@UiO-66-NH 2 ) are successfully synthesized by in situ immersion reduction. The Ag nanoparticles and the amino groups on the surfaces of PEI@UiO-66-NH 2 contribute to the adsorption of CO 2 and polarization of C–O bonds in epoxides, thereby boosting the conversion capability for the CO 2 cycloaddition reaction. At the amount of propylene oxide of 0.25 mol and the catalyst dosage of 1% of the substrate, the yield and selectivity of propylene carbonate are up to 99%. In addition, the stability and recyclability of Ag/PEI@UiO-66-NH 2 catalyst are attained. The Ag/PEI@UiO-66-NH 2 catalyst also demonstrates a wide range of activity and distinctive selectivity toward cyclo-carbonates in the cycloaddition of CO 2 to epoxides. This work provides a guide to designing a highly efficient catalyst for in situ capture and high-value utilization of CO 2 in industrial applications.
研究领域:
化学工程
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材料科学
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催化化学
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高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
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2022
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IF 5.876
Yiming Wang,Hong Li,Ze-nan Hu,Xin Chen,Zejun Sun,Yongjian Ai,Wenjuan Xu,Wenhui Zhang,Kelong Ding,Chengrui Li,Tong Jiang,Shuya Zhao,Haipeng Wang,Gang Zhang,Hong-bin Sun
Designing and developing efficient synergistic catalytic systems has always been an exciting topic. In this work, a sandwich-type nanocomposite , UiO-66-NH 2 @Pt@PCN-222, was utilized as a synergistic catalytic system for the selective reduction of nitrobenzaldehydes to nitrobenzyl alcohols. Benefiting from the synergy of PCN-222 and Pt NPs, the catalyst can efficiently promote the formation of 10 nitrobenzyl alcohols under mild conditions within as short as 30 min. Moreover, the PCN-222 provides not only active sites but also protection for metal nanoparticles , so the catalyst remained intact activity in cycles. This work has reference significance for the construction of synergistic catalytic systems.
研究领域:
化学
·
催化科学
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高影响因子
ACS Sustainable Chemistry & Engineering
·
2023
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IF 8.4
Yingshu Wang,Shuyue Wang,Jiasi Gan,Jinni Shen,Zizhong Zhang,Huidong Zheng,Xuxu Wang
One-pot synthesis of urea [(NH2)2CO] from easily available small molecules, that is, N2, CO2, and H2O, is an extremely attractive but very challenging reaction. 2D-CdS@3D-BiOBr composites with S-scheme heterojunctions are constructed via a facile hydrothermal technique followed by a self-assembly method and shown to be an excellent photocatalyst enabling the reduction of N2 and CO2 with H2O to (NH2)2CO under visible light. The optimal 40%2D-CdS@3D-BiOBr sample shows up to 15 μmol·g–1·h–1 total yield of NH3 and (NH2)2CO, of which (NH2)2CO accounts for 54%. The apparent quantum efficiency (AQE) is 3.93% for urea production. On the photocatalyst, urea is speculated to form by two possible chemical routes. One is direct photocatalytic synthesis. Both N2 and CO2 molecules are activated by the Cd2+ ion of 2D-CdS and the oxygen defect of 3D-BiOBr at the edges of the heterojunction interface of 2D-CdS/3D-BiOBr, respectively. *HNCONH* is the key intermediate of the formation of (NH2)2CO molecules. The other is indirect synthesis by photocatalysis and then thermocatalysis. N2 is reduced into NH3 and CO2 is reduced into CO on 2D-CdS by the photogenerated electrons and protons, and then the formed NH3 reacts with the reactant CO2 or the product CO to form (NH2)2CO by thermocatalysis on 2D-CdS. The former is dominant for urea synthesis. The work confirms that urea could be synthesized photocatalytically from cheap N2, CO2, and H2O under visible light. A composite heterojunction semiconductor could be a prospective photocatalyst appropriate for the complex reaction.
研究领域:
材料科学
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环境科学
·
化学工程
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高影响因子
Journal of Environmental Chemical Engineering
·
2025
·Vol. 14
·期 1
·120944
·
IF 7.2
Yong Xiang,Li Xu,Guoji Liu
Efficient recovery of Au(III) from electronic and industrial waste streams is of both economic and environmental importance. Herein, a pore-regulation strategy was developed to construct hierarchically porous NH 2 -MIL-101(Fe 1-x Cu x ). By employing 2-aminoterephthalic acid to coordinate simultaneously with Fe 3 + and Cu 2+ , the unstable Cu–O bonds were selectively removed through a mild acid-soaking treatment, thereby generating enlarged channels and hierarchical micro–mesoporous structures. The optimized framework achieved an Au(III) adsorption capacity of 944 mg g −1 , which was ∼30.7 % higher than that of unmodified NH 2 -MIL-101. Mechanistic studies demonstrated that the hierarchical pore architecture not only facilitated mass transfer but also enhanced accessibility of active sites, synergistically contributing to the superior adsorption performance. This work highlights that rational pore-channel engineering around adsorption sites can substantially boost the recovery efficiency of reducible precious metals, offering a novel design paradigm for advanced MOF-based adsorbents.
研究领域:
环境科学
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材料化学
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吸附分离
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资源回收
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配位化学
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高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2021
·
IF 6.953
Bin Wang,Jin Zhou,Xiang-Yang Zhang,Yu-Shun Yang,Chang-Hong Liu,Hai-Liang Zhu,Qing-Cai Jiao
Enzyme reaction has been accepted widely in numerous applications owing to the high efficiency and stereo-selectivity, as well as simple preparation by gene engineering. However, the fragility and complex purification process of the enzyme are long-standing problems which limit the large-scale application. One possible solution may be the enzyme immobilization. As one type of porous material with high loading capacity and designable functionality, Metal-Organic Frameworks (MOFs) are ideal choices for the immobilization of enzyme with a considerable interest in recent years. In this study, d -amino acid transaminase ( DAT ), an important enzyme for industrial synthesis of d -Ala, was covalently immobilized on the surface of a star MOFs material, UiO-66-NH 2. Interestingly, we found that the nanoscale hybrid enzyme UiO-66-NH 2 -Gd- DAT not only maintained the high catalytic efficiency but also got rid of the interference of polluting enzymes, which meant that we could obtain efficient and stereo-selective immobilized enzyme without complex purification process. In general, our findings demonstrated that using UiO-66-NH 2 might be a promising strategy to immobilize enzyme and produce effective biocatalyst with high activity and stereo-selectivity.
研究领域:
生物化学
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生物技术
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催化
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材料科学
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Yuan Chang,Zhenzi Li,Shijie Wang,Xuepeng Wang,Bo Wang,Lijun Liao,Wei Zhou
Metal-deficient Zr nodes are constructed in UiO-66-NH 2 by vacuum treatment. • Zr-node microenvironment regulation enhances charge separation and O 2 activation. • UN 200/28 achieves 272.9 μmol g −1 h −1 H 2 O 2 production in pure water. • UN 200/28 delivers a 20-fold activity increase and 6.36% AQY at 420 nm. • H 2 O 2 formation follows an ORR-dominated pathway with secondary WOR contribution. Photocatalytic H 2 O 2 production from pure water and O 2 offers a sustainable route for green oxidant synthesis, yet its efficiency is limited by insufficient O 2 activation, sluggish charge separation, and poorly defined active sites. Herein, a metal-defect-engineered UiO-66-NH 2 photocatalyst is constructed through high-temperature vacuum treatment to regulate the Zr-node coordination microenvironment. The optimized UN 200/28 preserves the UiO-66-NH 2 crystalline framework and octahedral morphology, while a 7.8% decrease in Zr content is confirmed by ICP, STEM, FTIR, XPS and EPR, thereby indicating the formation of metal-deficient Zr nodes and the reconstruction of the local Zr O coordination microenvironment. These defect-induced structural modifications broaden visible-light absorption, narrow the band gap from 2.88 to 2.57 eV, and promote photogenerated charge separation and transfer. UN 200/28 exhibits markedly enhanced photocatalytic H 2 O 2 production in pure water under O 2 , achieving an H 2 O 2 formation rate of 272.9 μmol g −1 h −1 , a 20-fold improvement over pristine UiO-66-NH 2 , and an apparent quantum yield of 6.36% at 420 nm. The O 2 reduction and water oxidation processes account for approximately 63.2% and 36.8% of the total H 2 O 2 formation, respectively. This work demonstrates that cluster-level regulation of the Zr-node coordination microenvironment is an effective strategy for enhancing photocatalytic H 2 O 2 production in pure water. Download: Download high-res image (110KB) Download: Download full-size image
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2026
·
IF 9.2
Yachao Ji,Yaqi Xu,Xinyu Luo,Zan Chen,Yawei Du,Sibudjing Kawi,Yinhui Li
Hydrogen energy is a promising carrier for decarbonizing energy systems, but its low volumetric energy density requires efficient storage and transportation. Electrochemical hydrogen compression provides quiet and energy-efficient hydrogen compression and purification, relying on proton exchange membranes with high conductivity and mechanical robustness. Herein, sulfonated poly(ether ether ketone) (SPEEK) with a sulfonation degree of 63.5% was prepared by post-sulfonation, and UiO-66-NH 2 (UN) was incorporated to fabricate SPEEK/UN composite membranes. The amino groups, Zr-OH sites, and confined water in UN provide proton-relay sites and regulate the interfacial proton-transport environment. The optimized SPEEK/UN-0.75 membrane exhibited a conductivity of 231.4 mS cm −1 and tensile strength of 57.6 MPa at 60 °C and 100% RH. Its proton selectivity increased from 4.55 to 13.89, and an outlet pressure of 2.37 MPa was achieved, outperforming SPEEK and Nafion 115. This membrane design provides a promising strategy for developing proton exchange membranes for electrochemical hydrogen compression.
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