CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Xingmao Zhang,Hang Wang,Qi Wang,Longyu Wang,Hongxiang Cui,Xiaopeng Sun,Jialong Ling,Dongmin Bian,Ziyi Zhang,Chuan-De Wu
Salinity gradient energy (SGE) harvesting from water has long been sought as a clean energy source. Commercial ion exchange membranes often face high energy barriers, inadequate ion transport ability, and chemical instability, thus displaying low power outputs. In this study, a series of continuous, flexible, zirconium-based metal–organic frameworks (Zr-MOFs) were synthesized on reduced graphene oxide membranes via electrochemical synthesis for highly efficient SGE harvesting are developed. The well-defined nanoscale channels and functional groups act as ionic filters and conductors, enhancing the ion selectivity for highly efficient SGE harvesting. Notably, the SO 3 H-UiO-66 membrane achieved a power density of 57.5 W/m −2 in neutral solution under a 1000-fold KCl concentration gradient, with a high K + transference number of 0.92, outperforming most reported membranes. Furthermore, the SO 3 H-UiO-66 membrane demonstrates a high output power density of 16.2 W/m −2 when tested with real seawater (Huang Hai) and domestic water, and is also effective in harvesting energy from wastewater, achieving a power density of 17.3 W/m −2 . This study opens new avenues for fabricating continuous Zr-MOF membranes as a platform for utilizing seawater and wastewater sources in SGE harvesting.
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Zhijian Xiao,Wenda Yang,Jing Wang,Shuang Cao,Jingling Yang,Mingshan Zhu
Photocatalysis is a promising technology for removing low concentrations of nitric oxide (NO) from the atmosphere. However, the unsatisfactory photocatalytic NO removal efficiency and the high selectivity for NO 2 in catalysts limit the development of this technology. In this work, we used an in-situ synthesis method to incorporate Cs 3 Bi 2 Br 9 into UiO-66 for efficient and robust photocatalytic NO removal. The Cs 3 Bi 2 Br 9 /UiO-66 catalyst exhibits a 77.6 % NO removal efficiency and low NO 2 selectivity under visible light irradiation at a WHSV of 1,650,000 mL h −1 g −1 , exceeding the efficiencies of Cs 3 Bi 2 Br 9 (36.4 %) and UiO-66 (2.3 %), as well as those of most reported MOF-based photocatalysts. The synergy of weak Lewis acid sites from Cs 3 Bi 2 Br 9 in Cs 3 Bi 2 Br 9 /UiO-66 and the strong Lewis acid sites from UiO-66 promotes the enrichment of NO on the catalyst surface and act as electron traps to induce carrier separation, thereby promoting the generation of O 2 − to achieve high efficiency. This work provides a new idea for the development of catalysts in NO elimination.
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MICROCHEMICAL JOURNAL
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2024
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IF 4.9
Hao-Jia Qin,Shuai Zhao,Hua-Ping Gong,Zhi Yu,Yufeng Wang,De Zhang,Pei Liang
Antibiotic residue detection plays a key role in ensuring human health. However, rapid, reliable, and highly sensitive detection methods are still insufficient. To tackle this challenge, in this study, the Au@Ag/Ce-UIO-66, a nanocomposite material consisting of bimetallic gold core and silver shell (Au@Ag) introduced on the surface of Ce-UIO-66, was successfully synthesized. By meticulously regulating the exact concentration and volume of silver nitrate, we successfully generated an optimal matrix. This significantly enhanced the detection capability of the probe molecule CV to an impressive concentration of 10 −9 M, with a remarkably low relative standard deviation of 7.54 %. The matrix exhibits excellent surface-enhanced Raman scattering (SERS) performance and stability, reaching adsorption equilibrium within 30 min. Moreover, employing this substrate enables the detection of sulfadiazine at concentrations as minimal as 2.5 μg/L, significantly surpassing the standards set by the European Union. Notably, the Raman spectral signal of sulfadiazine maintains stability across various pH conditions at a concentration of 10 −5 M. Finally, the adsorption mechanism and enhancement mechanism between Au@Ag/Ce-UIO-66 and sulfadiazine were explored.
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Surfaces and Interfaces
·
2025
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IF 6.3
Fen Yang,Shuai Zhao,Biaobiao Ge,Jie Huang,Qianmin Dong,Qiang Chen,Shangzhong Jin,Pei Liang
We demonstrate a method for the detection of Ziram in water by using the adsorption properties of UiO-66(Ce) metal-organic framework (MOF) combined with the surface-enhanced Raman scattering (SERS) substrate of precious metal nanoparticles. The traditional UiO-66 is based on Zr as the metal center. After replacing the Zr metal center with Ce, the synthesized UiO-66(Ce) has short aging, high efficiency, low energy consumption, and energy saving. Furthermore, by adding P123, UiO-66 is modified to have a structure similar to the durian shell spine, which can provide more composite sites for metal nanoparticles. Thus, more SERS hot spots are generated. The combination of AuNPs with UiO-66(Ce) has been confirmed by XRD, XPS, and other characterization and analysis techniques. The Raman probe molecule R6G was used as an evaluation tool to evaluate the performance of this SERS substrate. The results showed that the relative standard deviation (RSD) of the substrate was as low as 8.96 % at a concentration of 10 –6 M of the R6G solution, and the substrate demonstrated high stability. Finally, the substrate was applied for the detection of ziram in lake water, achieving a detection concentration of 10 –8 M, an enhancement factor of 2.57 × 10 5 , and a detection limit as low as 5.21 × 10 –9 M, demonstrating excellent sensitivity and enabling efficient trace pollutant detection in complex water environments.
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Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Huan Zhang,Cai-Yong Zhu,Wen-Qi Jin,Zi-Yu Li,Peng Li,Wei Gao,Ping Zhang,Xiu-Mei Zhang
The development of metal-organic framework (MOF)-based composite systems for visible-light-driven organic photocatalysis under mild conditions, offering an effective approach for sustainable and efficient chemical synthesis. Herein, we synthesized Z-scheme photocatalysts CdS/Ce-UiO-66 by combining the representative photocatalyst CdS and Ce-UiO-66, demonstrating excellent photocatalytic performance for imines synthesis in air. The CdS/Ce-UiO-66 composites demonstrated significantly enhanced photocatalytic activity for the oxidative coupling of amines under visible-light irradiation in air, outperforming their individual components. Remarkably, the composite achieved conversion of benzylamine with exclusive formation of imines as the sole product and efficiency up to 84 % at least four cycles. Furthermore, the photocatalytic system exhibited excellent substrate adaptability, demonstrating broad applicability across various amine substrates. The enhanced photocatalytic performance of CdS/Ce-UiO-66 composites can be primarily attributed to the uniform dispersion of CdS nanoparticles and the unique heterostructure system that effectively modulates the band gap, extends the light absorption range, and promotes charge carrier separation. This study not only presents an efficient photocatalytic strategy for the direct synthesis of imines through oxidative coupling of amines but also demonstrates the significant potential of photoactive CdS/MOF hybrid systems in sustainable chemical synthesis.
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Nanoscale
·
2025
·
IF 5.1
Jin Wang,Tianlong Zhou,Jie Zou,Jianhang Hai,Yunqing Lu
Triboelectric nanogenerators (TENGs) have emerged as a promising technology to harvest energy from the environment due to their self-powered characteristics, simple structure, low cost and high flexibility. To improve their performance, this work proposes a hierarchical optimization strategy, which integrates the employment of polyimide (PI) matrix, the doping of metal-organic framework and the surface patterning of TENG triboelectric layers to achieve high output performance and durability. In the work, the PI/UIO-66-NH₂ mixed matrix membrane (MMM) is first synthesized and characterized, where the influence of UIO-66-NH₂ loading amount on the triboelectric properties of MMM is analyzed. The measurement results show that this MMM exhibits excellent dielectric properties and thermal stability. Subsequently, the TENG device operated in the vertical contact-separation mode is fabricated, where MMM is used as the negative triboelectric layer and pure PI membrane as the positive layer. Moreover, the surface patterning method based on soft imprint lithography is applied to both triboelectric layers to augment their effective contact areas. Then, the output performance of TENG is characterized. It is found that, for the weight ratio of UIO-66-NH₂ of 5 wt%, the patterned UIO-66-NH₂ MMM-based TENG (P-TENG-5) achieves a maximum output power density of 78.27 ± 3.42 μW/cm², which is 5.76 times higher than that of unpatterned TENG-5 and 361.35 times greater than that of pure PI-based TENG-0. Remarkably, P-TENG-5 maintained stable performance over 20,000 cycles at 2 Hz without the considerable performance degradation.
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PubMed
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
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2025
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IF 5.4
Tursunjan Aydan,Nuermaimaiti Yimamu,Ding Kaize,Yao Zhengzheng,Guan Qingqing
Metal-organic frameworks (MOFs), particularly UiO-66, offer advantages in biomass catalytic conversion due to their good thermal stability, tunable porosity and abundant active sites. However, agglomeration limits their catalytic efficiency. To address this, a series of acid-base bifunctional UiO-66-type catalysts supported on biochar (BC) was developed in green solution through a one-pot method. BC prepared by pyrolyzing cotton stalks (CS) under N 2 atmosphere at high temperature and activated before use. The physico-chemical properties of materials were studied by various characterization methods, and their catalytic performance for converting cellulose to 5-hydroxymethylfurfural (5-HMF) in [BMIM]Cl ionic liquid was evaluated. Reaction parameters such as catalyst type, catalyst loading, temperature and time were optimized. Under the optimized conditions, achieving a 5-HMF yield of 46.58 %. The BC-supported catalyst NH 2 -UiO-66-SO 3 H/BC exhibited significantly higher catalytic activity than its unsupported counterpart and increased the 5-HMF yield by 23.78 %. This performance improvement is attributed to the grafted sulfonic/amino groups, which enhance the catalytic performance by improving the dispersion of UiO-66 upon the introduction of BC. This work demonstrates biochar-supported UiO-66 as an effective strategy for enhancing catalytic efficiency in sustainable biomass valorization to platform chemicals.
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ChemNanoMat
·
2025
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IF 2.6
Muhammad Kashif Majeed,Arshad Hussain,Muhammad Akram,M.Umar Majeed,Muhammad Arshad,Adil Saleem,Rashid Iqbal
The precise manipulation of pore structure, organic linkers, and disposition of active and co-active sites in metal-organic frameworks (MOFs)-based materials allows for the design of materials with tailored catalytic properties. However, studies that address their kinetic, dynamic, and mechanistic roles in target reactions are scarce. The development of a new functionalization method to introduce acidity into MOFs is established for heterogeneous catalysis. Exploring the effect of ligand functionalization in MOF type UiO-66(Zr) impacts its ability to catalyze the dimerization reaction of cyclohexanone. Upon treatment with a series of linkers and the addition of HCl, chemically stable MOF structures such as UiO-66 can be protonated, resulting in an acidic group attached to aromatic terephthalate linkers in the structure. A general synthetic strategy has been developed to produce functionalized UiO-66-FG compounds [FG = NH2, NO2, Br, OH, and (OH)2]. The functionalized acidic frameworks present enhanced catalytic activity toward the self-condensation of cyclohexanone. Investigating these aspects can provide valuable insights into how the functionalization of MOFs performs in real-world self-condensation scenarios and help in optimizing their practical applications.
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ACS Applied Engineering Materials
·
2023
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IF 0
Minghui Wan,Saijie Song,Wenli Feng,Xiaoyuan Wang,Jian Shen
A pesticide delivery system (PDS) is an effective strategy to overcome the low efficiency of conventional pesticide formulations. UiO-66, a metal–organic framework (MOF), is a suitable nanocarrier for pesticide delivery due to its large surface area, good stability, and nontoxicity. In this work, we developed deltamethrin-loaded UiO-66 (DM@UiO-66) as a PDS for sustained DM release and enhanced pest control. DM was loaded on UiO-66 via a physical adsorption method, forming a stable DM@UiO-66 nanoformulation (loading capacity 1049.6 mg/g). Unlike the burst release of free DM, DM@UiO-66 exhibits sustained pesticide release performance, which can maintain effective insecticidal concentration for a long time. Biological assay results indicate that DM@UiO-66 possesses better insecticidal activity than free DM, and the nanoformulation is safe for maize seeds and seedlings. In addition, DM@UiO-66 contains no toxic organic solvents or additives, which makes it environmentally friendly. Thus, the UiO-66-based PDS will hold a great future in agriculture and pest control fields.
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ELECTROPHORESIS
·
2018
·Vol. 39
·期 20
·2619-2625
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IF 2.569
Pingxiu Tang,Rong Wang,Zilin Chen
The high stability and other properties of Zr(IV)-based metal organic frameworks(MOFs) make it a promising choice for chromatographic separation, while the application in open-tubular capillary electrochromatography (OT-CEC) separation has not been explored yet. Herein, we report the first example of the in-situ growth of UiO-66-NH 2 onto the capillary for open-tubular capillary electrochromatography. UiO-66-NH 2 consists of ZrCl 4 and 2-amino-1,4-benzenedicarboxylic acid, which is highly porous and stable in a variety of solvents. The prepared UiO-66-NH 2 modified capillary was characterized by scanning electron microscopy (SEM) and Fourier transform infrared spectra (FT-IR), and the results confirmed the successful growth of the UiO-66-NH 2 . The baseline separation of chlorobenzenes, phenoxyacids and two groups of phenols was achieved owing to the combined interaction of π-π interaction, hydrophobic interaction, molecular sieve effect, electrophoretic migration and hydrogen-bonding interaction etc. Besides, the prepared capillaries showed good reproducibility, with relative standard deviations (RSDs) for intra-day, inter-day and column-to-column runs in the range of 1.38–2.60%, 3.39–4.05%, and 3.47–5.03%, respectively. Our work indicates Zr(IV)-based MOFs are promising materials as stationary phase in CEC separation.
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JOURNAL OF MEMBRANE SCIENCE
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2022
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IF 10.53
Jiang Fan,Wufeng Wu,Zong Lu,Yanying Wei
The Metal-Organic Framework (MOF) materials are ideal molecular sieving membrane materials due to the regular pores with high-density and good designability, which have been widely studied in gas separation, desalination, and nanofiltration , etc. However, most preparation methods of MOF polycrystalline membranes are always time-consuming and the as-synthesized MOF membranes are thick. Here in this work, the ultrathin 210 nm-UiO-66 polycrystalline membranes are rapidly synthesized in 1 h, where sonication is utilized to generate massive tiny nucleation followed with rapid microwave-assisted membrane growth. The Na + rejection of the UiO-66 membrane maintains at 99.6% for 700 h long-term experiment with 0.16 L/(m 2 h bar) of water flux in forward osmosis, indicating the good quality and excellent stability of the as-synthesized membrane. This strategy is also expected to synthesize many other continuous defect-free MOF membranes with ultrathin thickness rapidly.
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TALANTA
·
2021
·
IF 6.057
Huazheng Yu,Yanhong Li,Aisheng Huang
Sialic acid (SA) is a crucial component of glycoproteins and glycolipids on the cellular membrane, which is essential for maintaining the function of cell membranes, such as cell recognition and communication. Simultaneously, sialic acid plays a significant role in many physiological and pathological processes. Hence, it is urgent to develop a simple and sensitive strategy for determining sialic acid. In this work, a new metal-organic framework called UiO-66-NH 2 @B(OH) 2 has been designed and synthesized for the recognition and detection of sialic acid. The boronic acid functional group in UiO-66-NH 2 @B(OH) 2 can bind to a diol moiety of the glycerol side chain of sialic acid, which will attenuate or even quench the fluorescence of UiO-66-NH 2 @B(OH) 2 , thus opening a new road to detect sialic acid. Based on the measurement results, sialic acid can be quantitatively measured in a linear range of 0.05–2.5 mmoL/L with the UiO-66-NH 2 @B(OH) 2 probe. The detection limit of sialic acid is as low as 0.025 mmol/L. Furthermore, the boronic-acid functionalized probe UiO-66-NH 2 @B(OH) 2 displays high sensitivity and high selectivity to recognize the sialic acid in mouse serum samples. Therefore, the developed UiO-66-NH 2 @B(OH) 2 can be used as a promising probe to identify and detect sialic acid in the practical application.
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