JOURNAL OF MEMBRANE SCIENCE
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2024
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IF 8.4
Chenling Yao,Huan Zeng,Caiqin Wu,Di Wang,Wenbo Ma,Guilong Li,Jialing Zhou,Jian Wang
Converting the salinity gradient between seawater and river water into osmotic energy is one of the direct and effective ways to alleviate the energy crisis. High selectivity and permeability are two contradictory aspects in the design of composite membranes , and balancing the relationship between the two is the key to achieving efficient osmotic energy harvesting . Herein, a series of heterogeneous membranes consisting of UiO-66-NH 2 intercalated with poly (sodium 4-styrenesulfonate) (PSS) and anodized aluminum oxide (AAO) were designed to enhance the osmosis power generation capacity. The asymmetry of pore size, surface charge, and wettability of the composite membrane makes it behavior like a diodes-like ionic current rectification (ICR). The addition of PSS changes the ion selectivity and permeability of the composite membrane, thus enhancing the energy harvesting performance. The maximum power density of 6.32 W/m 2 is obtained under a 50-fold salinity gradient, which is 4.94 times that of the original composite membrane. This study provides a reasonable preparation strategy for functionalized MOF-based composite membranes for ion transport and efficient osmotic energy conversion.
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CHEMISTRY AND ECOLOGY
·
2024
·
IF 1.3
Zhenpeng Li,Dongmei Yan,Jun Li,Ziwei Mai,Fuchuan Huang
Hexavalent chromium (Cr(VI)) is regarded as a water pollutant because of its high toxicity in aquatic environments. In this study, polyethyleneimine-functionalised NH2-MIL-101(Cr) (PEI@NH2-MIL-101(Cr)) was fabricated by a facile wet impregnation method, and its effectiveness at removing Cr(VI) from wastewater was systematically investigated. As suggested by the experimental findings, pH was a significant determinant of Cr(VI) uptake by the fabricated PEI@NH2-MIL-101(Cr). Preferable depiction of adsorption system was achievable with the Langmuir adsorption model and the pseudo-order 2 kinetic model. At 288, 298, and 308 K, the highest adsorbability values were 241.55, 310.56, and 408.16 mg g−1, respectively. Processes like electrostatic attraction, reduction and chelation helped promote the Cr(VI) elimination. SO42− ions had a relatively large impact on the Cr(VI) adsorption compared with other coexisting ions such as NO3−, Cl− and H2PO4−1. Because of its properties of high adsorption capacity and Cr(VI) detoxification, the potential of PEI@NH2-MIL-101(Cr) in the Cr(VI) elimination from wastewater appears to be promising.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2025
·Vol. 36
·期 19
·1-15
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IF 2.8
Li Zi-Yan,Li Ya-Jun,Li Wei,Wang Ze-Hong,Zhao Zhao-Ye,Zhou Ting-Ting,Huang Yi-Rui,Wu Xiang-Feng,Zhang Peng-Liang,Zhen Zi-Yan,Ci Li-Jie
In this study, a photoelectrochemical sensor for the detection of glucose was developed by combining the unique properties of NH 2 -MIL-125 and Ti 3 C 2 film. The relationship between the microstructure of the samples and their performance in glucose detection was investigated. Experimental results demonstrated a linear decrease in the differential pulse voltammetry current of the Ti 3 C 2 /NH 2 -MIL-125-3 photoelectrochemical sensor with increasing glucose concentration. Below 200 μM, the relationship between DPV current and glucose concentration was found to be: I (mA) = − 3.86667 × 10 –8 ·c g (μM) + 3.66 × 10 –4 (c g denoted as the concentration of glucose). Above 200 μM, the relationship was: I (mA) = − 4.03049 × 10 –8 ·c g (μM) + 3.68268 × 10 –4 . Density functional theory calculations were in agreement with the experimental data. The Ti 3 C 2 /NH 2 -MIL-125-3 photoelectrochemical sensor demonstrates exceptional glucose detection capability. This technology has the potential to advance the development of MXenes/MOFs-based photoelectrochemical biosensors.
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CHIRALITY
·
2025
·Vol. 37
·期 8
·e70049
·
IF 3
Jia Huang,Yizhuo Ma,Maria Abbasi,Junzhe Qin,Mingxuan Li,Zi Yang,Xuran Sun,Wei Wang,Zhen Wang,Fang Liu,Luo Aiqin,Lina Geng
As enantiomers can have different pharmacological and toxicological impacts even though they have the analogous chemical composition, efficient chiral separation is crucial. Chromatography is one of the primary methods for separating enantiomers, and the key to chromatographic separation lies in the chiral stationary phase (CSP). Chiral porous materials have emerged as innovative chiral stationary phases and garnered extensive attention. Zr based MOF materials, have been regarded as one of the most stable metal–organic framework (MOF) materials. In this paper, after grafting with L-proline, UiO-66 was used for the first time for chiral gas chromatography separation. The newly developed CSP provided high resolution for xylenes within only 2–3 min. For substances like linalool, α-pinene, and xylenes, the UiO-66-NH 2 -L-Pro–coated capillary column acquired bas3ic resolution and showed outstanding enantiomeric and positional isomer isolation. Comprehensive characterizations, including SEM, XRD, FT-IR, TGA, N 2 adsorption–desorption isotherms, CD spectra, and XPS, were conducted to analyze the material stucture and chiral recognition mechanism. The chiral separation relies on transient diastereomeric complexes formed between L-proline and enantiomers, stabilized by hydrogen bonding, intermolecular forces, and steric constraints within UiO-66's micropores. These interactions enforce enantioselective discrimination via the pore's stereochemical filtering, enabling chiral resolution. This study is expected to provide significant value for both chromatographic chiral separation and large-scale chiral substance separation.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Xiangtao Tang,Lihong Lu,Fang Yang,Xingyu Zhong,Hongfa Shi,Wenqing Zhang,Lingfan Zhang
The treatment of radioactive wastewater containing 90 Sr required advanced adsorbents to address the limitations of the recyclable usage. In this study, a UiO-66-NH 2 @Chitosan/Loofah Fiber Composite (UNCL) was synthesized using an impregnation strategy, enabling easy separation from the solution and efficient Sr 2+ removal. By integrating the good adsorption activity of UiO-66-NH 2 , interfacial modification capability of chitosan, and macrostructural advantages of loofah fiber, the composite achieved enhanced mass transfer efficiency and structural stability. UNCL achieved adsorption equilibrium within 120 min, demonstrating rapid and efficient strontium capture capability. The material demonstrated robust performance under alkaline conditions, and retained high efficacy in real river water and seawater environments. Adsorption behavior aligned with the Sips isotherm model (R 2 = 0.999) and pseudo-second-order kinetics (R 2 = 0.995) with maximum adsorption capacity of 7.64 mg/g, confirming monolayer chemisorption. Mechanistic investigations, supported by FT-IR and XPS analyses, revealed a synergistic mechanism involving ion exchange, surface complexation and electrostatic interactions at multiple active sites. UNCL maintained approximately 90 % removal efficiency after five adsorption–desorption cycles and enabled facile separation from aqueous solutions through simple mechanical retrieval. These results demonstrated that UNCL combined adsorption ability, reusability, and environmental adaptability, positioning it as a promising and practical solution for Sr 2+ remediation.
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LANGMUIR
·
2025
·
IF 3.9
Shang Wu,Lihua Chen,Jiajia Wang,Qiyue Tong,Zhenyang Yu,Qinzheng Hu,Zhe Wang,Yuzhi Sun,Guihua Li,Quanlu Yang
NH2-UiO-66 has been recognized as a promising porous material due to its large specific surface area (SSA) and excellent structural stability. However, their poor electrochemical performance hinders their application in supercapacitors. In this study, NH2-UiO-66 was attached to the surface of NiCo-LDH nanoflower by employing the self-assembly strategy, which significantly inhibited the stacking of NiCo-LDH nanoflower, forming the NiCo-LDH/NH2-UiO-66 (NC/NU) composite. Owing to weakening of the aggregation effect, abundant redox-active sites, and ion diffusion channels of NH2-UiO-66, the obtained NC/NU composites exhibit a high specific capacitance of 867.4 F g–1 at 1 A g–1 and an outstanding cycling stability of 86.7% after 10,000 charge/discharge cycles. Additionally, derived 3D reticulated porous carbon (PCC) with ZIF-67 and sodium carboxymethyl cellulose (CMC) as precursors was synthesized by a two-step KOH activation strategy and used as an anode material. The hybrid supercapacitor (NC/NU-80//PCC-0.75) provides an energy density of 30.6 Wh kg–1 at a power density of 800.6 W kg–1, with a capacity retention of 96% after 5000 charge/discharge cycles. The obtained results demonstrate that NC/NU-80 nanoflower composites have considerable potential for application in the field of supercapacitors.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Zhiren Zhou,Lina Zou,Ping Zhang,Chunmei Li,Ye Zhu,Huanyu Ren,Zheng Li,Huiru Niu,Hao Liao,Xiaojing Zhang,Shanshan An,Fei Ren,Xiuhong Ge,Lang Cheng,Feiyan Yang,Hongzhi Pan,Shengzhong Rong,Dong Chang,Hongkun Ma
Survivin serves as a crucial biomarker for bladder cancer, so exploring the detection method is essential. Therefore, a sensitive ratiometric electrochemical immunosensor was developed. In brief, a double-layered amino graphene oxide (NH 2 -GO) sandwich enhanced by Fe-Ni@Ti 3 C 2 T x (NH 2 -GO/Fe-Ni@Ti 3 C 2 T x /NH 2 -GO) significantly amplified the detection signal. ferrocene@Au nanoparticles (Fc@AuNPs) provided a reference signal, and Ab 1 was anchored via an Au-N bond. Moreover, AuPt-methylene blue (AuPt-MB) served not only as a secondary signal but also anchored Ab 2 through Au-NH 2 and Pt-NH 2 bonds. Black phosphorus nanoplates (BPNPs) improved conductivity and provided additional binding sites for AuPt-MB. The immunosensor exhibited a broad detection range (0.001~1000 ng/mL) and a low detection limit (0.00065 ng/mL), facilitating successful survivin detection in human urine samples with promising clinical analysis applications.
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ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Tingting Hao,Shen Wang,Hongbo Xu,Xiang Zhang,Shlomo Magdassi,Lei Pan,Ying Song,Yao Li,Jiupeng Zhao
The application of flexible indium tin oxide (ITO)-free electrochromic devices (FCDs) has always been a research hotspot in flexible electronics. Recently, a silver nanowire (AgNW)-based transparent conductive film has raised great interest as an ITO-free substrate for FCDs. However, several challenges, such as the weak binding of AgNWs to the substrate, high junction resistance, and oxidation of AgNWs, remain. In this paper, a novel method for surface modification of AgNWs with N-aminoethyl-γ-aminopropyltrimethoxysilane [Si(NH2)] solution is proposed to enhance the bonding with the flexible substrates and the active materials, thereby inhibiting the delamination of AgNWs from the substrate and reducing the high junction resistance between nanowires. The TiO2/AgNW–Si(NH2)/poly(ethylene terephthalate) (PET) films show outstanding mechanical properties, of which the resistance remains almost unchanged after mechanical bending of 5000 cycles (ΔR/R0 ≈ 3.6%) and repeated peeling off cycles with 3M tape 100 times (ΔR/R0 ≈ 6.0%). In addition, we found that the oxygen-containing groups on the TiO2/AgNW–Si(NH2)/PET surface form hydrogen bonds with the TiO2 sol, resulting in tight contact between the TiO2 sol and the AgNWs, which prevents the AgNWs from oxidation. As a result, the TiO2/AgNW–Si(NH2)/PET film exhibited long-time aging (ΔR/R0 ≈ 4.9% in the air for 100 days) stability. A FCD was constructed with the TiO2/AgNW–Si(NH2)/PET film, which showed excellent electrochromic performance (94% retention) after 5000 bending cycles, indicating high stability and mechanical flexibility. These results present a promising solution to the transparent conductive films for flexible energy devices.
研究领域:
材料科学
·
柔性电子技术
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APPLIED CATALYSIS A-GENERAL
·
2026
·
IF 4.8
Ying Gao,Jinxing Long
Conversion of ethyl levulinate to GVL was proposed using Pd 4 /UiO-66-NH 2 . • Pd 4 /UiO-66-NH 2 was constructed via a post-synthetic modification strategy. • Synergistic effects between Pd species and acidic sites drive superior performance. • GVL yield of 90% with 98.9% selectivity was achieved under 170 ℃ and 1.0 MPa H 2 . • The catalyst shows good recyclability, and can be reused for at least five runs. An efficient strategy is proposed for direct hydrogenation of ethyl levulinate (EL) to γ-valerolactone (GVL) using a highly dispersed palladium nanoparticles supported on the UiO-66-NH 2 framework (Pd/UiO-66-NH 2 ), which was prepared via a facile post-synthetic modification by anchoring palladium (Pd) nanoparticles on the framework's native -NH 2 groups. Under optimized conditions (170 °C, 1.0 MPa H 2 ), 90% yield and 98.9% selectivity of GVL were shown when the reaction was catalyzed by Pd 4 /UiO-66-NH 2 in cyclohexane. Catalyst characterization using XRD, N 2 adsorption-desorption, FT-IR, TEM, TGA, XPS and H 2 -TPR, confirmed that an intensive synergistic effect existed between the Pd and the acidic sites, which is responsible for the superior performance of Pd@UiO-66-NH 2 . The solvent effect and the feedstock adaptability were also investigated. Furthermore, the catalyst of Pd 4 /UiO-66-NH 2 demonstrated good stability and reusability, where no significant activity loss was shown even after five consecutive cycles. Therefore, this study provides new insights for efficient upgrading biochemical. Download: Download high-res image (188KB) Download: Download full-size image
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CHINESE JOURNAL OF ANALYTICAL CHEMISTRY
·
2022
·
IF 1.193
Xin Yang,Xin-Yi Yu,Qing Wang,Jie Zou,Gui-Ping Liao,Meng-Tian Li,Xin-Li Liu,Hui Xia,Fu-Jian Xu
Herein, a label-free, sensitive, and selective fluorescence probe for the detection of trace nitrite in water sample by metal–organic cages (ZrT-1-NH 2 ) was reported. The fluorescence emission of as-prepared ZrT-1-NH 2 was 450 nm upon the excitation of 373 nm with a quantum yield of about 8.6%, which can be quenched by the addition of nitrite. The proposed sensor owned the advantages of high sensitivity (limit of detection = 0.5 µM), quick response (100 s), and excellent selectivity in the presence of various ions. The fluorescence quenching was due to the diazotization and reduction reaction of –NH 2 with the preliminary studying. Under the optimized condition, the sensor was successfully exemplified by real water samples and comparative performance was achieved.
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BIOTECHNOLOGY AND BIOPROCESS ENGINEERING
·
2022
·Vol. 27
·期 1
·135-144
·
IF 3.386
Wang Zichen,Liu Yang,Li Jinhong,Meng Guoqing,Zhu Daoyu,Cui Jiandong,Jia Shiru
As a series of metal organic framework (MOFs), materials of institute lavoisier frameworks (MILs) are expected to be excellent supports for enzyme immobilization due to their good water-stability and acid tolerance. However, enzyme loading on MIL-125-NH 2 is very low due to small pore size and few amino groups on the surface of the MIL-125-NH 2 . In this work, catalase (CAT) was immobilized on the MIL-125-NH 2 and amino functionalized MIL-125-NH 2 by adsorption (CAT@MIL-125-NH 2 ) and covalent binding (CAT@Amino MIL-125-NH 2 ), respectively. Compared with the CAT@MIL-125-NH 2 and free CAT, the CAT@Amino MIL-125-NH 2 displayed high activity recovery, good pH stability, stability against denaturants, and thermostability. Furthermore, activity recovery of CAT@Amino MIL-125-NH 2 was 56% higher than CAT@MIL-125-NH 2 . The CAT@Amino MIL-125-NH 2 still retained 50% residual activity for 14 days at room temperature, whereas free CAT lost activity after storage for 1 day at the same storage conditions. Furthermore, the CAT@Amino MIL-125-NH 2 maintained 62% of its initial activity after 4 consecutive uses, showing good reusability. The results showed that the amino functionalized MIL-125-NH 2 is an excellent carrier of enzyme immobilization.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Xinru Zhang,Xiaofeng Ren,Yonghong Wang,Jinping Li
Mixed matrix composite membranes (MMCMs) for CO 2 capture have great potential in carbon neutral goal. However, simultaneous enhancement in permeance and selectivity is very difficult, since mismatching pore and chemical structures of filler with polymer matrix are the stumbling block. Herein, novel core–shell MOFs@COFs hybrids were prepared by growing hierarchical pore covalent organic frameworks (COFs, nitrogen-enriched nanoporous polytriazine (NENP)) on the surface of metal organic framework (MOFs, zeolite imidazolate framework-8 (ZIF-8)), where ethylenediamine were impregnated into NENP pore to adjust the chemistry environment of the shell. Subsequently, a porous polysulfone (PSf) membrane-supported MMCMs were developed by a coating method using a mixed dispersion of ZIF-8@NENP-NH 2 and polyvinylamine (PVAm), which was used to efficiently separate CO 2 from N 2 . The rough COFs layer (NENP-NH 2 ) was closely wrapped on the smooth surface of ZIF-8 as identified by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and N 2 adsorption. Even-distributed ZIF-8@NENP-NH 2 had well miscibility with the PVAm matrix from hydrogen bonding as evidenced by SEM, attenuated total reflectance-FTIR and differential scanning calorimetry. The CO 2 permeance as high as 301 GPU accompanied with a selectivity of 91 was obtained for MMCMs loaded with 7 wt% ZIF-8@NENP-NH 2 , which were enhanced by 296.1% and 89.6%, respectively, when compared with the pristine PVAm membrane, transcending 2019 upper bound. We assume that the surface chemistry environment in hierarchical pore of the shell and molecular sieving pore in the core in the short-range order facilitate CO 2 permeation. Furthermore, this membrane maintained an average CO 2 permeance of 369 GPU and a CO 2 /N 2 selectivity of 97.3 for over 360 h using CO 2 /N 2 mixed gas as feed gas.
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