Journal of Cleaner Production
·
2023
·
IF 11.1
Miaolu He,Yushuang Li,Leihao Feng,Jiaqi Wang,Ze Liu,Lei Wang,Jin Wang,Rui Miao,Xudong Wang
The traditional thin-film composite (TFC) forward osmosis (FO) membrane has problems such as poor water permeability and low lithium concentration selectivity because the separation layer is too thick and has many defect pores. In this study, a thin and dense separation layer was obtained by constructing a sodium alginate (SA)/UiO-66-NH 2 interlayer to control the attachment amount and diffusion rate of m-phenylenediamine (MPD), which enhanced the performance of the membrane. This paper studies the effect and mechanism of the interlayer on the structure and separation performance of the FO membrane, and explores the lithium ion concentration performance of the interlayer membrane. According to the results, based on the strong interaction between the interlayer and MPD, the equilibrium concentration of MPD available for interfacial polymerization was increased and the diffusion rate of MPD was slowed, resulting in the generation of a thin and dense separation layer. Since the interlayer restricted the escape of bubbles formed in the interfacial polymerization, the separation layer showed a leaf-like structure with increased filtration area and water storage space. Due to the reduced thickness of the separation layer and its leaf-like structures, the water flux increased significantly, and the water flux of the interlayer membrane was 47.9% greater than that of the original membrane. Drawing upon the heightened density of the separation layer and secondary separation of the interlayer, the reverse solute flux was lowered by 37.4%. The interlayer membrane exhibited efficient Li + rejection (R>93%) and the concentration ratio of Li + was close to its theoretical concentration ratio at 1.46 ± 0.03.
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2019
·
IF 5.128
Lulu Yan,Tingting Duan,Tingting Huang,Bingbing Zhao,Yu Fan
This article proposes a novel strategy for producing highly dispersed H 3 PW 12 O 40 (HPW) on metal-organic frameworks (MOFs) via the anchoring action of amino groups originating from 2-amino terephthalic acid (APTA) in the MOF ligand. Under this method, amino groups are introduced into the linker of UiO-66 materials through a one-pot synthesis to disperse supported HPW, which has a negligible impact on the crystal structure of UiO-66. The acidic densities in the HPW/UiO-66 catalysts are effectively modified by adjusting the molar APTA/PTA (terephthalic acid) ratio in the mixed ligand and HPW loading. Consequently, the dispersion and stability of supported HPW are significantly enhanced, which make the as-prepared catalyst with 40 wt% of HPW present superior sec -butyl acetate (SBAC) yield (38.6 wt%) and selectivity (98 wt%) for the direct esterification of olefins. This strategy provides a new approach for preparing supported HPW with high dispersion and stability to be applied in olefin esterification.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Wen Li,Kuncan Wang,Junjie Huang,Xiao Liu,Dun Fu,Jiale Huang,Qingbiao Li,Guowu Zhan
Metal–organic frameworks have been exploited as excellent solid precursors and templates for the preparation integrated nanocatalysts with multicomponent and hierarchical structures. Herein, a novel synthetic protocol has been developed to fabricate versatile Zr-based solid solutions (such as ZnO–ZrO2, Co3O4–ZrO2, and CuO–ZrO2) via pyrolysis of Schiff base-modified UiO-66 octahedrons (size <100 nm), which were then utilized as efficient catalysts for CO2 hydrogenation. The Schiff base serves as an effective bridge to dope secondary metal ions into UiO-66 frameworks with controlled amounts of 0.13–8.8 wt %, which are initially hard to achieve. Interestingly, by simply changing the loading metal ions, the selectivity of C1 hydrogenation products can be facilely tuned. For instance, the maximum CO2 conversion of ZnO–ZrO2, Co3O4–ZrO2, and CuO–ZrO2 solid solutions were 5.8, 11.4, and 22.5%, with the main product selectivity of 70% CH3OH, 92.5% CH4, and 86.7% CO, respectively. Moreover, in situ diffuse reflectance infrared Fourier transform spectra characterization reveals that the significant difference in C1 product selectivity is mainly determined by the balance of *HCOO, *CH3O, and *CO intermediate species over the Zr-based solid solutions.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2019
·
IF 6.393
Xin Xiong,Yao Zhang,YinFang Wang,HaiFeng Sha,Nengqin Jia
By virtue of the metal organic framework UiO-66-NH 2, an ingenious electrochemiluminescence immunosensor was successfully constructed for subtle exploration of the breast cancer biomarker CA 15-3. In this protocol, Ru(bpy) 3 Cl 2 ·6H 2 O (Ru(bpy) 3 2+ ), as a conventional luminescent reagent, provides a stable and strong luminescent signal. The UiO-66-NH 2 serves as a carrier to provide a large specific surface area for enhancing the electrochemical luminescence signal response of Ru(bpy) 3 2+ . UiO-66-NH 2 , Ru(bpy) 3 2+ are fixed together with Nafion membrane, and CA 15-3 antibody is covalently conjugated onto the membrane through the amide reaction. Ru(bpy) 3 2+ @UiO-66-NH 2 is used as the detection system. The experimental results reveal that the ECL signal decreased obviously after the CA 15-3 antigen molecule is captured on the immunosensor, with the capture of manifesting the principle of electrochemical luminescence quenching detection. Under optimal conditions, the sensor is sensitive and selective for detecting CA 15-3 with the detection range from 5 × 10 −4 to 5 × 10 2 U mL -1 and the low LOD (1.7705 × 10 -5 U mL -1 ). Furthermore, multiple experiments elucidate that the as-prepared sensor could be used for susceptibly detect CA 15-3 in actual samples, which has underlying application prospects in biological analysis.
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Chao Yang,Hao Chen,Yuankai Li,Zhelin Su,Yeshuang Wang,Xufei Liu,Huiling Fan
The low sulfur selectivity of Fe-based H2S-selective catalytic oxidation catalysts is still a problem, especially at a high O2 content. This is alleviated here through anchoring FeOx nanoclusters on UiO-66 via the formation of Fe–O–Zr bonds. The introduced FeOx species exist in the form of FeIII and FeII. Therein the FeIII–O species are the predominant active sites for H2S-oxidation. The formed Fe–O–Zr bonds strengthen the redox cycle of FeIII/FeII through promoting electron transfer from Fe to Zr. The FeII–O species can activate molecular oxygen to oxidize H2S into elemental S, which accelerates the formation rate of atomic S, hindering its further oxidation into SO2. The combination of these factors empowers the catalysts, enabling 100% H2S conversion and 98.2% sulfur yield. The catalyst also has satisfactory stability with the sulfur selectivity only decreasing from 98.2% to 91.3% after the reaction going on 50 h. The decreased sulfur selectivity might be caused by the deterioration of pores and the deposition of elemental S on the surface. The former hinders the diffusion of sulfur oligomers timely from pores to the gas phase, while the latter is suspected to capture electrons to promote its further reaction with molecular oxygen.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Liwei Qian,Yuhao Zhang,Wenqi Song,Sufeng Zhang,Nan Zhang,Valentin Nica
Glycoproteins are essential in biological systems, yet their complex structures and diverse glycosylation patterns present challenges for efficient and specific recognition. Herein, molecularly imprinted polymers (MIPs) with high selectivity and adsorption capacity for glycoproteins were developed using two synergistic strategies. One strategy was to synthesize a boronic acid-containing ionic liquid (PBA-IL) functional monomer that combines long-range non-covalent interactions with short-range covalent bonds, enhancing the interaction modes with ovalbumin (OVA) to improve imprinting efficiency. The other strategy entailed constructing a composite carrier with high specific surface area (50.3 m 2 /g) and abundant active sites by in-situ growth of UiO-66 metal–organic framework crystals on a wood-derived cellulose sponge (WCS). This composite (WCS@UiO-66) was utilized in a template immobilization method combined with surface imprinting technique (TIM-SIT) to prepare the MIPs (WCS@UiO-66@MIPs). Molecular simulations indicated that PBA-IL formed stronger interactions with OVA compared to traditional monomer. Based on these characteristics, the WCS@UiO-66@MIPs achieved rapid adsorption equilibrium within 40 min, exhibiting surprisingly high adsorption capacity (up to 571 mg g −1 ) and recognition ability (imprinting factor of 5.09) for OVA. The competitive adsorption experiments also demonstrated the efficient extraction of OVA from biological samples by WCS@UiO-66@MIPs, confirming its exceptional specificity. Additionally, the osmotic separation experiments revealed that WCS@UiO-66@MIPs achieved a selective permeation factor of up to 7.68 for OVA in a binary protein mixture, further demonstrating their potential for large-scale continuous separation processes. Therefore, this work provides a promising strategy for the efficient and specific recognition of glycoproteins, advancing their application in biotechnology and analytical chemistry.
✓ 已验证
产品关联
DOI
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2013
·Vol. 19
·期 42
·14279-14285
·
IF 5.831
Dengrong Sun,Yanghe Fu,Wenjun Liu,Lin Ye,Dengke Wang,Lin Yang,Xianzhi Fu,Zhaohui Li
Graphical Higher CO 2 photoreduction activity than previously studied metal–organic framework (MOF) NH 2 -MIL-125(Ti) in the presence of triethanolamine (TEOA) as the sacrificial agent under visible light is exhibited by the amino-functionalized MOF NH 2 -Uio-66(Zr). The photoinduced electron transfer from 2-aminoterephthalate linkers to Zr oxo clusters was revealed for the first time by photoluminescence studies, and the generated Zr III was detected by ESR analysis (see figure). Metal–organic framework (MOF) NH 2 -Uio-66(Zr) exhibits photocatalytic activity for CO 2 reduction in the presence of triethanolamine as sacrificial agent under visible-light irradiation. Photoinduced electron transfer from the excited 2-aminoterephthalate (ATA) to Zr oxo clusters in NH 2 -Uio-66(Zr) was for the first time revealed by photoluminescence studies. Generation of Zr III and its involvement in photocatalytic CO 2 reduction was confirmed by ESR analysis. Moreover, NH 2 -Uio-66(Zr) with mixed ATA and 2,5-diaminoterephthalate (DTA) ligands was prepared and shown to exhibit higher performance for photocatalytic CO 2 reduction due to its enhanced light adsorption and increased adsorption of CO 2 . This study provides a better understanding of photocatalytic CO 2 reduction over MOF-based photocatalysts and also demonstrates the great potential of using MOFs as highly stable, molecularly tunable, and recyclable photocatalysts in CO 2 reduction.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2024
·Vol. 12
·期 35
·23940-23947
·
IF 10.7
Kai Chen,Qingqing Liu,Zhiying Qiu,Huan Zhang,Ning Gong,Lihua Zhu
Pt-PMo@UiO-66 catalysts synthesized via a solvothermal method utilizing phosphomolybdic acid as a stabilizing agent exhibit exceptional catalytic performance in the selective hydrogenation of nitroarenes. The nanostructure of the Pt-PMo@UiO-66 catalysts is demonstrated by ICP-OES, XRD, XPS, TEM, HRTEM, STEM-EDS and other characterization studies. The Pt nanoparticles (NPs) or clusters are mainly supported on the surface of UiO-66. There is a synergistic catalytic effect between Pt, phosphomolybdic acid and UiO-66, improving their catalytic hydrogenation performance (activity, selectivity and stability) for nitroarene hydrogenation. It is found that 0.32%Pt-PMo@UiO-66 has the best catalytic properties for nitroacetophenone hydrogenation, with 98.8% conversion and 99.6% selectivity to aminoacetophenone under relatively mild reaction conditions (1.75 h, 40 °C, 3.0 MPa H2). The turnover frequency (TOF) reaches 1498.0 h−1. The catalyst also shows high selectivity for the hydrogenation of halogen-containing nitroarenes without dehalogenation. The appropriate size of the Pt NPs (4.44 nm) and the electronic effect (electron transfer from Pt to Mo) improves the catalytic hydrogenation activity and selectivity of Pt-PMo@UiO-66 for the selective hydrogenation of nitroarenes under moderate reaction conditions.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Yu Yang,Meng Du,Jiaxin Liang,Qian Xu,Wei Liu,Ang Li
The flow-through electroactive membrane adsorption method has been proved to be a promising strategy to enrich low-concentration phosphate. However, the challenges of selective adsorption of phosphate and poor regeneration restrict its industrial application. Here, this study proposed a novel bimetallic Mg-UiO-66@rGO electrode material through the introduction of Mg(II) into UiO-66, which possessed remarkable adsorption selectivity and optimal reproducibility among the reported electrode materials. The maximum phosphate adsorption capacity of Mg-UiO-66(13)@rGO (Zr/Mg = 3:1) was 62.81 mg⋅g −1 at 3.2 V. Furthermore, it maintained the excellent adsorption properties in the presence of all competitive anions and after 30 times of continuous adsorption–desorption. In actual wastewater, Mg-UiO-66(13)@rGO still represented excellent adsorption kinetics of 0.51 mg⋅(g⋅min) −1 and equilibrium adsorption capacity of 61.2 mg⋅g −1 . The superior selectivity of Mg-UiO-66@rGO was attributed to the establishment of coordinative unsaturated metal sites (CUMSs), thus increasing the adsorption sites. The synergic effect of electric field facilitates the breaking and formation of coordination bonds between charged ions and deeper binding sites, boosting the adsorption–desorption ability. Notably, the structural stability is also a key factor in promoting repeated material regeneration. This study advances electrode material to a new level by introducing CUMSs and bimetallic synergies.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Xiao-hu Ma,Si-yuan He,Zhe-rui Zhang,Zhe Meng
Persistent light-emitting materials (PLMs), which have the potential to store and release light energy after light irradiation, are receiving increasing attention for their role in prolonging the lifetime of photogenerated electrons for the development of photocatalysts with round-the-clock applications. In this paper, a double S-scheme Sr 2 MgSi 2 O 7 :Eu 2+ ,Dy 3+ /ZnIn 2 S 4 /UiO-66-NH 2 (SZU) heterojunction with round-the-clock catalytic activity was prepared by hydrothermal self-assembly method. The photocatalytic performance of the SZU heterojunction for RhB(MB) degradation was significantly improved compared with the pristine ZnIn 2 S 4 and UiO-66-NH 2 . The SZU heterojunction has excellent catalytic degradation performance for RhB (MB), and the removal rate of RhB (MB) reaches 72.2 % (81.7 %) after visible light irradiation for 40 (60) minutes. After the end of light, the total removal rate of RhB (MB) reached 86.7 % (96.8 %) when the catalysis continued for several hours under dark conditions, which was 14 % and 15 % higher than that under visible light irradiation, respectively. Based on the characteristics of SMS photoluminescence, combined with a large number of photocatalytic experiments, The sustained photocatalytic activity was enhanced under both daytime and darkness conditions, not only because of the production of SZU complexes, which prolonged the visible light response of ZnIn 2 S 4 , but also because of the construction of double S-scheme heterojunctions, which facilitates the light storage capacity, charge transfer, and the separation of photo-induced charge carriers and effectively promoted the photocatalytic activity of the photocatalysts. This work contributes to a deeper understanding of the design of round-the-clock photocatalysts, and provides a useful exploration for the practical application of photocatalytic technology.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Guzheng Mao,Qiqi Kan,Zhongyuan Yue,Shengui Ju,Haoli Zhou,Wanqin Jin
Pervaporation (PV) is an energy-efficient membrane technology for separating organic mixtures. Traditional polymer membranes in the PV face limitations due to a trade-off between flux and separation factor. Mixed-matrix membranes (MMMs) fabricated using solution mixing or filler modification often suffer from interfacial defects or require additional complex preparation steps. This study introduces an in situ polymerization method that incorporates UiO-66-NH 2 into the polyamide polymerization process to fabricate UiO-66-NH 2 @polyamide (PA) MMMs for methanol and dimethyl carbonate separation, which effectively resolves the interfacial defect issues while eliminating additional filler modification steps. The trade-off issue is also overcome. Results show that in situ polymerization improves UiO-66-NH 2 dispersion in the polymer matrix and strengthens polymer–filler interactions. MMMs with 5 wt% UiO-66-NH 2 loading achieved a total flux of 11.5 kg/(m 2 ·h) and a separation factor of 12.5 at 30 °C, representing a 2.32-fold and 1.46-fold improvement over pure PA membranes. These findings demonstrate the significant benefits of in situ polymerization in enhancing MMM performance and simplifying fabrication, providing an efficient strategy for industrial PV applications.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Ruirui Li,Wei Zhuang,Yan Gao,Yahan Bai,Keke Zhang,Zhenfu Wang
Herein, UiO-66 was selected as the immobilization carrier of Rhizomucor miehei lipase (RML). After etching and hydrophobic modification, the functionalized UIO-66 (H-UIO-66-OPA) was utilized for RML immobilization and the obtained RML@H-UIO-66-OPA showed about 70 % relative activity after incubation at 60 °C, which was much better than RML (20 %). RML@H-UIO-66-OPA was used in the synthesis of 1,3-dioleic acid glycerol (1,3-DAG) and the effects of reaction conditions (temperature, enzyme addition, substrate molar ratio, and time) on 1,3-DAG yield were investigated. Under the optimal conditions (temperature of 65 °C, enzyme addition of 2 wt%, substrate molar ratio of 2:1, and reaction time of 4 h), 1,3-DAG yield reached 77 %. Finally, Box-Behnken experimental design method was utilized to optimize the process parameters for the preparation of 1,3-DAG, and the final 1,3-DAG content was 79.80 %, which demonstrated that the model could predict the relationship between the factors and be suitable for the process optimization in 1,3-DAG preparation.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）