Particuology
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2024
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IF 4.1
Yan Li,Heng Lin,Qiaolan Yu,Na Ma,Wei Dai
The adsorption performances of individual adsorbent such as UiO-66-NH 2 and MgAl-layered double hydroxides (MgAl-LDH) toward levofloxacin (LVX) is less satisfactory due to the disappointing uptake capacity and adsorption efficiency. Herein, a 3D flower-like composite adsorbent prepared via iterative hydrothermal synthesis method anchoring UiO-66-NH 2 nanoparticles onto the MgAl-LDH surface. Attributed to the synergistic effects of UiO-66-NH 2 , and MgAl-LDH, the MgAl-LDH@UiO-66-NH 2 exhibits an outstanding adsorption performance toward LVX. Typically, the maximum LVX uptake capacity over MgAl-LDH@UiO-66-NH 2 reached 268 mg/g, which was higher than that of the individual adsorption materials UiO-66-NH 2 (41 mg/g), MgAl-LDH (140 mg/g), and some adsorbents reported in previous literature. The rapid adsorption process can reach equilibrium within 20 min, which conformed well to the pseudo-second-order kinetics and the Langmuir isotherm model. Adsorption thermodynamic result also indicated that the adsorption was spontaneous and exothermic, simultaneous coexisting physical and chemical adsorption interactions. Importantly, the MgAl-LDH@UiO-66-NH 2 still maintained excellent adsorption capacity with a slightly decrease after fifth cycle, exhibiting a remarkable reuse and stable performances. This work provides a highly novel strategy to prepare recyclable composite adsorbent for the LVX capture from aqueous solution.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
·
IF 4.9
Yiyang Bi,Xin Wang,Ke Li,Chengqian Wang,Yu Zhang,Qun Liu
A reasonable introduction of MOFs-derived Ni 2 P with high dispersion is a valid way to reduce the recombination rate of photogenerated electron holes , thus enabling more effective visible light-driven water splitting. Herein, the MOF-on-MOF strategy was used to prepare Ni 2 P@UiO-66-NH 2 by in situ growth of Ni-MOF on UiO-66-NH 2 followed by vapor-phase phosphating, and the composite photocatalyst of CdS/Ni 2 P@UiO-66-NH 2 was obtained by a facile ultrasound method in solvent. UiO-66-NH 2 provides the growth site for Ni-MOF, enabling uniform dispersion of Ni 2 P and the firmly anchoring of CdS. By adjusting the proportion of Ni 2 P@UiO-66-NH 2 , the light absorption capacity and photocatalytic activity can be further optimized. The hydrogen production efficiency of CdS/Ni 2 P@UiO-66-NH 2 can reach up to 2103 µmol·g −1 ·h −1 , which is about 7 times higher than that of pure CdS. The improvement of the photocatalytic performance of CdS/Ni 2 P@UiO-66-NH 2 composites can be mainly ascribed to the increased active sites exposure, well dispersion of CdS, and the creation of multiple heterojunctions , which tune the band gap, broaden the visible light absorption, and facilitate the carrier separation. This work offers an efficient synthetic strategy for creating ternary composites with remarkable catalytic activity and high stability for hydrogen evolution .
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
ZhenXiang Xu,Yuan Gao,JingLiang Wang,YunHuan Li,YiPeng Zhao,Xin Meng,Xia Feng,Li Chen,YiPing Zhao
Bio-based porous adsorbents for multicomponent air purification are often constrained by limited active-site density, insufficient control over hierarchical pore architectures, and inadequate mechanical robustness. Herein, chitosan was functionalized with poly(amidoamine) (PAMAM) dendrimers of different generations and combined with carboxymethyl cellulose (CMC) and UiO-66-NH 2 to construct nitrogen-enriched composite aerogels. The effects of PAMAM generation and UiO-66-NH 2 loading on the pore architecture, surface chemistry, mechanical response, and pollutant-capture performance of the aerogels were systematically evaluated. The optimized CG 2 MUNA-2 aerogel exhibited a well-connected porous network and sustained a compressive stress of 13.62 MPa at 80% strain. It achieved a CO 2 uptake of 0.64 mmol·g −1 at 273.15 K and a formaldehyde adsorption capacity of 1.57 mmol g −1 , while retaining 92.4% of its initial formaldehyde adsorption capacity after five adsorption-desorption cycles. When incorporated into cigarette filter rods, CG 2 MUNA-2 reduced CO, CO 2 , and total particulate matter by 30.87%, 14.01%, and 62.58%, respectively. Its superior overall performance was associated with a favorable balance among accessible amine functionalities, pore connectivity, and UiO-66-NH 2 dispersion. These results indicate that the coordinated regulation of PAMAM generation and MOF loading offers a rational materials-design strategy for developing biopolymer-based aerogels for multicomponent air-pollutant capture and cigarette-smoke purification. Download: Download high-res image (278KB) Download: Download full-size image
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MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Zhaoxia Shi,Zhen Luo,Yilu Liu,Yintang Zhang,Yanli Zhou,Maotian Xu
A synergistic MgO@UiO-66-NH₂ nanocomposite was prepared for CTL sensing. • The proposed CTL sensor enables rapid, non-invasive detection of isopropanol. • The sensor exhibits a wide linear range (0.04–120 mg/L) and good stability. • This method offers a potential approach for preclinical lung cancer screening via exhaled breath analysis. Isopropanol (IPA) has been identified as a potential biomarker for lung cancer, and the rapid detection of IPA in exhaled breath may offer a promising strategy for lung cancer screening. In this study, rod-like MgO, MnO₂, and ZnO, along with natural halloysite nanotubes (HNTs), were synthesized and used as carriers to fabricate nanocomposites with a Zr-based metal–organic framework (UiO-66-NH₂). Their catalytic activities toward IPA were evaluated using cataluminescence (CTL) measurements. MgO@UiO-66-NH₂ exhibited the highest catalytic activity, attributed to the synergistic effect between MgO and UiO-66-NH₂ enhancing the redox capacity in the presence of ozone. Based on this composite, a rapid CTL method was developed for IPA detection in exhaled breath. The intra-sensor precision (nine repeated measurements on the same sensor) gave a relative standard deviation (RSD) of 3.41%; inter-sensor reproducibility (seven different sensors) gave an RSD of 3.81%; and long-term stability over seven weeks showed an RSD of 4.3%. The linear range was 0.04–120 mg/L, with a limit of detection of 0.015 mg/L (S/N = 3). When applied to three healthy human exhaled breath samples, the method achieved spiked recoveries ranging from 90.0% to 105.3%. These results demonstrate that the proposed CTL sensor enables rapid, non-invasive detection of IPA and holds great potential for IPA detection in exhaled breath. Download: Download high-res image (143KB) Download: Download full-size image
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FOOD CHEMISTRY
·
2026
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IF 10.4
Hao Fang,Limin Cao,Jianxin Sui,Xiudan Wang,Hong Lin,Kaiqiang Wang,Jinjie Li
A dual-modulation strategy improved the stability of anthocyanin-based indicator patches. • Phenolic copigmentation enhanced thermal stability of anthocyanins. • UiO-66-NH 2 provided effective UV protection and additional pigment immobilization. • The anthocyanin-based patch maintained color integrity for more than 6 months. • The anthocyanin-based patch was used to monitor the freshness of shrimp. Anthocyanins are natural pH-sensitive pigments with potential for intelligent food packaging, but their poor stability under environmental stress limits practical use. Herein, a highly stable intelligent indicator patch was developed by combined incorporation of UiO-66-NH 2 , a metal-organic framework, and 2,5-dihydroxybenzoic acid. This dual-modulation strategy significantly enhanced anthocyanins stability through hydrogen bonding and van der Waals interactions. The optimized indicator patch maintained color integrity for over 30 days at ambient temperature and more than 6 months at 4 °C in darkness. It exhibited excellent pH responsiveness and high selectivity to spoilage amines (e.g., NH 3 , dimethylamine, trimethylamine) over common volatile interferents. When applied to Litopenaeus vannamei , the patch's color change correlated strongly with total volatile basic nitrogen (TVB-N) values ( r > 0.93), accurately identifying freshness stages. The indicator patch showed high batch-to-batch reproducibility ( RSD < 5%) and anti-interference capability. This study provides a feasible approach to commercialize anthocyanin-based freshness indicators for intelligent packaging. Download: Download high-res image (316KB) Download: Download full-size image
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ACS Applied Polymer Materials
·
2026
·
IF 5.2
Ziyi Yuan,Zhihong Lin,Kejing Li,Jian Li,Viatcheslav Freger,Xuezhong He
Polymers of intrinsic microporosity (PIMs) are promising membrane materials for CO2 separation due to their high permeability; however, their limited CO2/N2 selectivity restricts practical application. Herein, mixed-matrix membranes (MMMs) were fabricated by incorporating a CO2-molecularly imprinted UiO-66-NH2 filler (MIP@U) into amidoxime-functionalized PIM-1 (AOPIM-1), followed by thermal treatment at 160 or 250 °C under vacuum to regulate the membrane microstructure. Spectroscopic and porosity analyses (FTIR, XRD, and N2 physisorption) show that thermal treatment at 160 °C promoted oxadiazole-ring formation, leading to enhanced subnanometer microporosity and improved CO2/N2 selectivity. In contrast, treatment at 250 °C partially regenerates nitrile groups and generates larger micropores, resulting in higher CO2 permeability but reduced selectivity. The MIP@U filler introduces CO2-recognition cavities and improves interfacial compatibility, enabling synergistic control of polymer microporosity and interfacial transport pathways. The optimized 3 wt % MIP@U/AOPIM-1-TR160 membrane achieves a CO2 permeability of ∼1600 Barrer and a CO2/N2 selectivity of 50.8. The membrane also demonstrates stable performance under pressures up to 12 bar and during 30 h of continuous operation at 2 bar. This study highlights a dual-approach strategy combining thermally tailored PIM chemistry with molecularly imprinted MOF fillers for designing high-performance MMMs for CO2 capture.
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ACS Catalysis
·
2024
·
IF 11.3
Chong Qi,Yifu Bi,Yaolin Wang,Hong Yu,Yuanyu Tian,Peijie Zong,Qinhua Zhang,Haonan Zhang,Mingqing Wang,Tao Xing,Mingbo Wu,Xin Tu,Wenting Wu
Nonthermal plasma (NTP) offers the potential for converting CH4 with CO2 into liquid products under mild conditions, but controlling liquid selectivity and manipulating intermediate species remain significant challenges. Here, we demonstrate the effectiveness of the Cu/UiO-66-NH2 catalyst in promising the conversion of CH4 and CO2 into oxygenates within a dielectric barrier discharge NTP reactor under ambient conditions. The 10% Cu/UiO-66-NH2 catalyst achieved an impressive 53.4% overall liquid selectivity, with C2+ oxygenates accounting for ∼60.8% of the total liquid products. In situ plasma-coupled Fourier-transform infrared spectroscopy (FTIR) suggests that Cu facilitates the cleavage of surface adsorbed COOH species (*COOH), generating *CO and enabling its migration to the surface of Cu particles. This surface-bound *CO then undergoes C–C coupling and hydrogenation, leading to ethanol production. Further analysis using CO diffuse reflection FTIR and 1H nuclear magnetic resonance spectroscopy indicates that in situ generated surface *CO is more effective than gas-phase CO (g) in promoting C–C coupling and C2+ liquid formation. This work provides valuable mechanistic insights into C–C coupling and C2+ liquid production during plasma-catalytic CO2 oxidation of CH4 under ambient conditions. These findings hold broader implications for the rational design of more efficient catalysts for this reaction, paving the way for advancements in sustainable fuel and chemical production.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2022
·
IF 5.518
Jiarong Wang,Shixiong Chen,Qinghao Zeng,Hong Jiang,Haiqing Chang,Tian C. Zhang,Xiaobao Tian,Yingqi Li,Ying Liang,Kai Wang
A miniaturized point-of-use (POU) water treatment device to achieve convenient and efficient water disinfection for remote and post-disaster areas remains a challenge. Herein, such as POU device consisted of a self-polymerized polydopamine (PDA) layer and UiO-66-NH 2 nanoparticles covered electrospun polyacrylonitrile (PAN) membrane (PAN@PDA@UiO-66-NH 2 ) with bacteria filtration and photothermal antibacterial property is successfully fabricated. The membrane achieves a good interception effect of microorganisms in water because of the synergistic pore interception and adsorption effect. A nearly 100% bacterial retention efficiency was obtained by the PAN@PDA@UiO-66-NH 2 membrane. In addition, the obtained PAN@PDA@UiO-66-NH 2 membrane exhibits nearly 100% photothermal sterilization efficiency against Escherichia coli ( E. coli ) under 6 min of 808 nm infrared irradiation (1.21 W). The great photothermal effect comes from the synergistic effect of good photothermal conversion efficiency and absorption of incident light caused by the PDA layer and rough UiO-66-NH 2 particles, respectively. Through the good filtration performance and photothermal effect of the membrane, the filtration for water containing bacteria and sterilization of membrane can be realized. Meanwhile, the membrane fouling caused by bacterial growth can be inhibited. In this way, this innovative membrane has the ability to maintain great filtration and sterilization ability during long-term operation, and thus, having great potential to be used as an effective, convenient, practical, and safe POU water-treatment device.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Xiaoming Xu,Guoyan Hua,Yuxuan Chen,Yanhong Zhang,Zepeng Zhang,Weiben Yang,Fuqiang Liu,Aimin Li
Traditional polyamide nanofiltration membranes suffer from permeability-selectivity trade-off limitation and unsatisfactory rejection for divalent cations. Herein, a novel dually charged membrane was constructed by incorporating positively charged UiO-66-(NH 2 ) 2 into the negatively charged polyamide layer. Thanks to the customizable nanochannels of metal-organic frameworks, the amino-rich nanochannels of UiO-66-(NH 2 ) 2 could be fabricated through a ligand replacement strategy. UiO-66-(NH 2 ) 2 played a crucial role in the enhanced rejection of divalent cations, meanwhile negatively charged polyamide surface guaranteed the efficient Na 2 SO 4 rejection. Satisfactory rejections of CaCl 2 (96.07 %) and Na 2 SO 4 (90.62 %) were achieved simultaneously by optimal TFN-D5. Meanwhile, TFN-D5 owned the greatly-improved water permeance of 19.44 LMH/bar, which was about 1.5 times better than that of the TFC-control. Calculations based on density functional theory further confirmed UiO-66-(NH 2 ) 2 rejected Ca 2+ efficiently since the migration energy barrier across UiO-66-(NH 2 ) 2 was an order of magnitude higher than that of UiO-66-NH 2 and UiO-66. Moreover, the desirable rejections were beyond 94 % towards many divalent cation salts including MgCl 2 , NiCl 2 , PbCl 2 , MnCl 2 , CdCl 2 and ZnCl 2 . Thus, this work provided an efficient way to realize the synergistic removal of both divalent cations and anions.
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Polymers
·
2022
·Vol. 14
·期 2
·283
·
IF 4.967
Wei Chen,Ping Zhu,Yating Chen,Yage Liu,Liping Du,Chunsheng Wu
Iodine has been widely used as an effective disinfectant with broad-spectrum antimicrobial potency. However, the application of iodine in an antibacterial polymer remains challenging due to its volatile nature and poor solubility. Herein, iodine immobilized UiO-66-NH2metal-organic framework (MOF) (UiO66@I2) with a high loading capacity was synthesized and used as an effective antibacterial additive for poly(ε-caprolactone) (PCL). An orthogonal design approach was used to achieve the optimal experiments’ conditions in iodine adsorption. UiO66@I2nanoparticles were added to the PCL matrix under ultrasonic vibration and evaporated the solvent to get a polymer membrane. The composites were characterized by SEM, XRD, FTIR, and static contact angle analysis. UiO-66-NH2nanoparticles have a high iodine loading capacity, up to 18 wt.%. The concentration of iodine is the most important factor in iodine adsorption. Adding 0.5 wt.% or 1.0 wt.% (equivalent iodine content) of UiO66@I2to the PCL matrix had no influence on the structure of PCL but reduces the static water angle. The PCL composites showed strong antibacterial activities againstStaphylococcus aureusandEscherichia coli. In contrast, the same content of free iodine/PCL composites had no antibacterial activity. The difference in the antibacterial performance was due to the different iodine contents in the polymer composites. It was found that MOF nanoparticles could retain most of the iodine during the sample preparation and storage, while there was few iodine left in the free iodine/PCL composites. This study offers a common and simple way to immobilize iodine and prepare antibacterial polymers with low antiseptic content that would reduce the influence of an additive on polymers’ physical properties.Keywords:UiO-66-NH2metal-organic framework;iodine;poly(ε-caprolactone);antibacterial
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JOURNAL OF APPLIED POLYMER SCIENCE
·
2022
·Vol. 139
·期 24
·52332
·
IF 3.057
Xibin Wu,Zhimei Wei,Jie Yang,Gang Zhang,Shengru Long,Xiaojun Wang
The purification of dye wastewater plays a critical role in water pollution treatment. Adsorption is a cheap and effective separation technology but is limited by the reuse of adsorption materials. Ultrafiltration membranes have a relatively high flux but their pores are too large to reject small dye molecules. In this study, negatively charged oxidized poly (arylene sulfide sulfone) (O-PASS) membrane, NMP pretreatment oxidized O-PASS (N-O-PASS) membrane, and O-PASS@UiO-66-NH 2 /O-PASS composite membranes were fabricated to retain cationic methylene blue (MB) from wastewater by combining ultrafiltration and adsorption techniques. The increased porosity of the N-O-PASS membrane provides more available adsorption sites for an equilibrium MB adsorption amount of 22.5 (mg g −1 ) and 100% rejection in the first 10 min during ultrafiltration with a pure water flux of 162.32 (L m −2 h −1 bar −1 ). Due to the enhanced hydrophilicity and separating property by deposited UiO-66-NH 2 particles and PASS resin, O-PASS@UiO-66-NH 2 /O-PASS composite membrane shows a flux of 170.32 (L m −2 h −1 bar −1 ) and a 100% MB rejection in 60 min with great reusability. The O-PASS@UiO-66-NH 2 /O-PASS composite membrane is a new promising membrane for the removal of dyes from wastewater. Meanwhile, the superior solvent resistance endows it great adaptability in wide applications, especially in harsh conditions.
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REACTIVE & FUNCTIONAL POLYMERS
·
2022
·
IF 4.966
Xiaoling Fan,Fei Xin,Wenchao Zhang,Haoyu Liu
A novel phosphorus-containing flame retardant PZN@UiO-66-NH 2 was synthesized by covalent bonding between HCCP and UiO-66-NH 2 , and applied in unsaturated polyester (UPR). The Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron energy spectra (XPS), scanning electron microscopy (SEM) was used to confirm the chemical structure of PZN@UiO-66-NH 2 . The appearance of new P-N-C bond indicated that HCCP was successfully reacted with UiO-66-NH 2 . The thermal stability and the flame-retardant properties of the UPR composites were characterized by thermogravimetric analysis (TGA), limiting oxygen index (LOI) and cone calorimeter test. The limiting oxygen index (LOI) of UPR composite with 4 wt% PZN@UiO-66-NH 2 can reach 23.9%. Compared with pure UPR, the peak heat release rate (PHRR) value, total heat release (THR) value and average effective heat of combustion (av-EHC) value of UPR composite with 4 wt% PZN@UiO-66-NH 2 dropped by 36.53%, 28.70%, 23.50%, respectively. The addition of PZN@UiO-66-NH 2 slightly improved the impact performance of UPR composite. PZN@UiO-66-NH 2 can solve UiO-66-NH 2 's agglomeration dilemma in UPR to some extent.
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