Desalination and Water Treatment
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2024
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IF 1
Yannan Jia,Jiacheng Li,Zijie Wang,Xiaomei Wu,Kai Xu,Zheng Wang
Metal-organic framework UiO-66-NH 2 was studied as an adsorbent for effective boron removal from desalination seawater for the first time. First, UiO-66-NH 2 was synthesized using the solvothermal method and then characterized in terms of N 2 adsorption/desorption isotherms, zeta potential, scanning electron microscopy, X-ray diffraction, Fourier-transform infrared spectroscopy, and thermogravimetric analysis. Based on the experimental design of response surface methodology, the adsorption of boron on UiO-66-NH 2 was optimized using three independent variables: adsorbent dosage (60–80 mg/L), pH (5–7), and temperature (298–318 K). Under the optimized conditions, the maximum adsorption capacity was predicted to reach 24.54 mg/g. Investigation of the kinetics and isotherms revealed that the pseudo-second-order kinetics model and the Langmuir isotherm can well cover the adsorption data of boron. Thermodynamic parameters showed that the adsorption of boron by UiO-66-NH 2 is spontaneous and feasible. UiO-66-NH 2 also exhibits good reproducibility. It is a highly practical sorbent that can be used to remove boron from desalination seawater.
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MICROPOROUS AND MESOPOROUS MATERIALS
·
2017
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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.
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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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JOURNAL OF MEMBRANE SCIENCE
·
2026
·
IF 8.8
Hang Yang,Qiankun Sha,Yixuan Wang,Xiaohui Lu,Chang Ma,Na Han
Efficient separation of organic dyes from inorganic salts in high-salinity textile wastewater remains a major challenge for resource recovery. Although graphene oxide (GO) membranes show promise for ion-sieving applications, their practical use is hindered by interlayer swelling, pore compaction, and the inherent permeability–selectivity trade-off. Here, a synergistic interlayer-engineering strategy based on a “skeleton–filler” architecture is proposed using CNT/UiO-66-NH 2 to regulate the GO/substrate interface. In this architecture, carboxylated multi-walled carbon nanotube (MWCNT-COOH) scaffolds, together with metal–organic framework (MOF) particles, effectively mask the macroporous defects of the substrate and suppress sagging of the flexible GO nanosheets. Meanwhile, the hierarchical interlayer creates low-resistance transport pathways, thereby generating a gutter effect and reducing mass-transfer resistance. Consequently, the optimized GCU-27 membrane delivers a high water permeance of 105.14 L·m ‒2 ·h ‒1 ·bar ‒1 , together with a high Congo red rejection of 99.91% and a low MgCl 2 rejection of 3.60%. As a result, a high separation factor of 1071.11 is achieved. In addition, GCU-27 shows good antifouling performance ( = 88.16%) and stable separation performance during 100 h of continuous operation at 70 °C. This work provides an effective interfacial-engineering strategy and mechanistic insight for the rational design of high-performance GO-based membranes for dye/salt fractionation.
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LANGMUIR
·
2026
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IF 4.4
Yue Qiu,Yingying Ling,Yahong Yuan,Tianli Yue,Fei Lyu
Patulin (PAT), a hazardous mycotoxin found in fruits and their products, poses significant health risks. While UiO-66-NH2 has been primarily explored as an adsorbent or carrier for mycotoxin removal, this study investigates its previously underexplored role as an oxidase-mimicking nanozyme for PAT degradation. UiO-66-NH2 achieved a maximum degradation efficiency of 84.01% within 48 h and 97.63% after 96 h. Mechanism studies revealed that the Zr–O cluster activates O2 to generate reactive oxygen species (·O2– and ·OH), which mediate the oxidative opening of the lactone and furan rings in PAT. The −NH2 enhances both PAT affinity and electron transfer of UiO-66. Three-dimensional fluorescence and LC-MS/MS analyses identified four degradation products (C7H7O5, C7H9O7, C4H5O5, and C3H5O3), enabling the proposal of a plausible degradation pathway. Applied to apple juice, UiO-66-NH2 removed 85.29% of PAT in 72 h, with a negligible impact on juice quality. This work offers an efficient nanozyme-based strategy for PAT detoxification in food applications.
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PubMed
高影响因子
JOURNAL OF COORDINATION CHEMISTRY
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2023
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IF 1.9
Yanbing Yin,Yang Liu,Zhou Wang,Yongming Feng,Bei Jiang
A ternary composite α-DMACoPc/UiO-66-NH2/TiO2 was synthesized by solvothermal method and characterized by X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FT-IR), scanning electron microscopy (SEM) and other means. The composite catalyst was applied to decompose methylene blue dye in visible light, and the degradation rate reached 93.4%. Compared with the monomer, the composite significantly enhanced the efficiency of the catalytic degradation due to the synergistic effect between composites. The transport speed of charge is accelerated and the recombination of hole-electron pairs is inhibited due to the larger specific surface area. A feasible scheme was provided for preparation of composite catalyst and photocatalytic degradation of dye.
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TALANTA
·
2022
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IF 6.556
Pengfei Zhao,Sisi Tang,Xiaodan Wu,Yu Chen,Kangling Tang,Jinli Fu,Huibin Lei,ZhaoXia Yang,Zhaohui Zhang
Development of method with micro-volume reagent usage and high selectivity for rapid determination of valuable disease-related biomarkers is of great importance for disease surveillance. Herein, a novel ratiometric fluorescence capillary imprinted sensor was developed for highly selective fluorescence determination of sialic acid (SA) based on luminescent metal-organic framework (UiO-66-NH 2 ). In this strategy, the imprinted pre-polymer with double emissions was sucked into the capillary to grow imprinted layer on the inner wall of the capillary. In presence of SA, the blue fluorescence (440 nm) served as fluorescence response signal was quenched due to the electron transfer mechanism between metal organic framework and SA while the red fluorescence (655 nm) served as the reference signal was remained. Within SA concentration linear range of 1.0 × 10 −7 –3.0 × 10 −4 M, the ratiometric fluorescence capillary imprinted sensor was applied to detect SA in human serum and saliva samples successfully with a detection limit of 2.5 × 10 −8 M. A sensitive and selective fluorescence method with micro-volume sample consumption (15 μl) for determination of SA in practical samples was established.
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ANALYST
·
2022
·Vol. 147
·期 24
·5655-5662
·
IF 5.227
Ying Zhou,Ruichun Li,Guomei Zhang,Yan Zhang,Caihong Zhang,Shaomin Shuang
Metal–organic frameworks (MOFs) have emerged as interesting nanomaterials owing to their large surface area, high porosity, tunable pore architecture and easy functionalization. However, an inferior electrical conductivity hinders their application in electrochemical sensing. In this paper, gold–palladium alloy/UiO-66-NH2/graphene (AuPd/UiO-66-NH2/GN) composites were synthesized by loading alloys on the surfaces of MOFs and then attaching them to the graphene surface. The addition of metal nanoparticles and graphene enhanced the electron transfer ability of MOFs. Then, composites were used to modify a glassy carbon electrode (GCE) to construct a sensitive dopamine (DA) electrochemical sensor. The developed sensor manifested two linear relationships in lower concentration ranges and in higher concentration ranges with a 0.21 × 10−6 mol L−1 low detection limit (3σ/k) under optimal conditions. The results certified that the constructed sensor had high selectivity, excellent reproducibility and good stability, and had been used successfully for DA detection in actual human serum samples.
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PubMed
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2023
·
IF 4.2
Wei Zhang,Runtang Liu,Longwen Lei,Binbin Nian,Shipin Yang,Yi Hu
Efficient and stable catalysis has always been a fundamental concept in enzyme-catalyzed industrial processes. However, the poor stability of laccase has hindered its application in industry. The conventional methods of immobilization have proven to be ineffective in achieving both stability enhancement and the maintenance of high activity simultaneously. To address this challenge, we have constructed a magnetic core–shell structured metal–organic framework doped with copper ions (MCIL@Cu-UiO-66-NH2), which leverage the synergistic effects of copper ion activation and covalently binding to immobilize laccase. The resulting immobilized laccase exhibited high activity recovery (89%) and stability, retaining 90% relative activity after 30 days of storage and 66% of its initial activity after being exposed to a temperature of 60 °C for 6 h. The application of immobilized laccase in the removal of aqueous organic pollutants was also investigated. The results demonstrate that immobilized laccase can remove 2,4-dichlorophenol completely within 8 h and maintains approximately 90% removal efficiency after undergoing five cycles. Moreover, immobilized laccase also exhibited favorable results in the removal of other phenolic pollutants and typical aromatic pollutants, which are difficult to degrade, such as indole and anthracene. The copper ion-doped magnetic MOF composite novel introduced in this work demonstrated promising potential as an efficient carrier for laccase immobilization, and the immobilized laccase exhibits practical application prospects in the field of wastewater treatment.
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Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Yongtong Lei,Lijing Zhu,Jilong Xu,Shuan Liu,Zhixiang Zeng,Xiaocheng Li,Gang Wang
Metal organic framework (MOF) with fine pore structures, ultra-high porosity and large specific surface area can provide more water transport channels while achieving precise sieving of different sizes of ions, which is a promising material for high efficiency desalination. However, particle agglomeration, interface incompatibilities and interface defects severely restrict the performance of MOF-based membranes. It is still a challenge to construct MOF-based desalination membranes with both high water permeability and high ion sieving. Herein, the UiO-66-NH 2 based nanofiltration membrane was fabricated by in-situ growth of UiO-66-NH 2 on Nylon membrane and composed with polyamide (PA) layer by interfacial polymerization (IP). With 12 h solvothermal reaction, the UiO-66-NH 2 nanoparticles are found uniformly loaded on the Nylon substrate. Therefore, the water molecule transport channels provided by UiO-66-NH 2 nanoparticles reduce the transport resistance, which can improve the water permeability. More importantly, UiO-66-NH 2 nanoparticles are found to be involved in the IP process, which can reduce the interfacial defects and thus enhance the bonding force between the PA layer and base film. The synergistic effect of the UiO-66-NH 2 and PA layer improves the nanofiltration performance of the membrane with rejection rate of 92.97% for Na 2 SO 4 and the pure water permeance (PWP) of 11.55 L m −2 h −1 bar −1 . The N-UN12 @PA membrane also has excellent antifouling performance (flux recovery ratio (FRR) of 95.86%, reversible fouling ratio (Rr) of 33.93%, irreversible fouling ratio (Rir) of 4.14%). Unlike the mixed-matrix membrane (MMM) and polycrystalline MOF membrane, this strategy provides a promising method to prepare high-performance nanofiltration membrane for desalination.
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Journal of Environmental Chemical Engineering
·
2020
·
IF 4.3
Yi Cheng,Jilin Zhang
Excessive phosphate in wastewater can cause eutrophication of water body, which will worsen the ecological environment and threaten human health and biological life safety. Adsorption of phosphate is the most effective way to remove phosphate, and efficient adsorbent is the key. Amorphous La(OH) 3 has been deemed as a potential phosphate adsorbent on account of high adsorption capacity and environmentally friendly property. However, it also shows some disadvantages such as easy agglomeration, poor water dispersion. In this study, UiO-66-NH 2 was used as carrier to load amorphous lanthanum hydroxide as an adsorbent for phosphate removal. The adsorbent (UiO-66-NH 2 @La(OH) 3 , ULCs) has good water dispersibility and it is easy to be separated and recovered. At the same time, the maximum phosphate adsorption capacity can reach 140.7 mg P/g. The adsorption process accords with pseudo second order kinetic model and Freundlich isotherm model. The thermodynamic results showed that the adsorption process was spontaneous and endothermic. In addition, in the presence of coexisting anions (such as Cl − , SO 4 2− , NO 3 − ), it also exhibited high selectivity and phosphate removal efficiency. Meanwhile, the adsorption capacity keeps at a high level in the range of pH 3–11. By the merit of above-mentioned properties, the prepared material is expected to be an ideal candidate for phosphate removal from contaminated water.
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