POLYMER BULLETIN
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2025
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IF 4
Zhang Chengpeng,Bei Pengzhi,Liu Hongjing,Zhao Xu,Shi Meiling,Jing Xiaochun,Li Zhao,Yao Hui
A novel porous liquid, M2070-UiO-66-OH@[BMim][PF 6 ], has been synthesized using zirconium-based metal–organic framework (UiO-66-OH), 1-butyl-3-methylimidazolium hexafluorophosphate ([BMim][PF 6 ]) and polyetheramine M2070. To enhance the CO 2 separation performance, M2070-UiO-66-OH@[BMim][PF 6 ] was incorporated as a filler into a mixed matrix membrane (MMM) using polyether block amide (Pebax-1657) as the membrane matrix. The properties of the synthesized M2070-UiO-66-OH@[BMim][PF 6 ] and the resulting MMMs have been characterized through FTIR, TGA, DSC, and SEM analyses. The results of porous liquid stability revealed that grafting polyetheramine M2070 onto the surface of UiO-66-OH@[BMim][PF 6 ] significantly increased the steric hindrance, thereby preventing agglomeration within the membrane. Additionally, the functional groups (amino and ether) present in M2070-UiO-66-OH@[BMim][PF 6 ] contributed to an increased number of active sites for CO 2 adsorption, facilitating enhanced CO 2 transport through the membrane. Compared to the Pebax membrane, the MMM containing 3% M2070-UiO-66-OH@[BMim][PF 6 ] exhibited significantly improved CO 2 permeability of 104.07 Barrer (an increase of 73.22%) and CO 2 /N 2 selectivity of 92.37 (an increase of 148.95%) at 30 °C and 0.3 MPa, surpassing the 2008 Robeson upper bound. These findings suggest that M2070-UiO-66-OH@[BMim][PF 6 ] is a highly promising additive for the fabrication of mixed matrix membranes with superior CO 2 separation performance. Graphical abstract A porous liquid, (M2070-UiO-66-OH@[BMim][PF 6 ]) has been prepared using UiO-66-OH@[BMim][PF 6 ] as the core and polyetheramine M2070 as the canopy. Afterwards, M2070-UiO-66-OH@[BMim][PF 6 ] has been added to the Pebax matrix to prepare M2070-UiO-66-OH@[BMim][PF 6 ]/Pebax mixed matrix membranes, which have been subjected to gas separation studies.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
JOURNAL OF CHROMATOGRAPHY A
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2025
·
IF 4
Xuejing Lou,Yingge Hao,Huina Zhou,Zhen Song,Youmei Wang,Minghua Lu
The creation of defects in crystalline structures can tune metal-organic frameworks (MOFs) properties, such as improving their adsorptive and catalytic performance with producing more porosity and active sites. In this work, the bimetallic UiO-66 containing Zn and Zr was prepared. And then UiO-66 with missing cluster defects (UiO-66-1/3) were obtained by acid washing to remove the Zn nodes. UiO-66-1/3 was used as sorbent of dispersive solid-phase extraction (dSPE) to extract and enrich (BUs). Combination with high-performance liquid chromatography-diode array detector (HPLC-DAD) was developed to detect trace BUs in soil samples. Adsorption equilibrium can be reached in 3 min. The method possesses high enrichment factor (202-325), low detection limit (0.005-0.04 ng·mL -1 ), and wide linear range (0.02-200 ng·mL -1 ). In addition, the recovery rate of UiO-66-1/3 as an adsorbent was still higher than 95% after reused for 16 times. This work provides a new material for the enrichment and detection of benzoylurea insecticides in the environment.
研究领域:
环境科学
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分析化学
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DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2020
·
IF 7.489
Xiaodong Zhang,Liang Song,Fukun Bi,Dongfeng Zhang,Yuxin Wang,Lifeng Cui
In this paper, dispersed Ag nanoparticles supported on UiO-66 derivative were prepared and the effect of Ag loading on the structure and performance of the catalysts for toluene oxidation were studied. The characteristics of the catalysts were studied by XRD, SEM, TEM, HRTEM, BET, ICP-OES, XPS, UV–vis and in situ DRIFTS. It was observed that UiO-66 structure of 2 wt% Ag catalyst (2Ag-U) was not damaged. When Ag loading was further increased to 10 wt% (10Ag-U), framework of UiO-66 collapsed and uniform Ag nanoparticles were dispersed on the surface of support. Further increasing Ag to 14 wt% (14Ag-U), large Ag nanoparticles were observed, and Ag species migrated to the bulk phase of the support, resulting in the decrease of surface Ag content. The 10Ag-U catalyst showed excellent catalytic performance due to higher lattice oxygen and surface Ag 0 content. In addition, in situ DRIFTS analysis was used to explore toluene-catalyzed intermediates. It was found that toluene was converted to benzaldehyde and benzoic acid, eventually forming CO 2 and H 2 O.
研究领域:
材料科学
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环境科学
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化学工程
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DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2021
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IF 7.46
Xia Gao,Guangming Sun,Xinke Wang,Xiaodong Lin,Shuo Wang,Yaqing Liu
As a vital signaling molecules, hydrogen sulfide (H 2 S) with abnormal concentrations is correlated with many diseases. Therefore, development of novel assays for quantitative and selective detection of H 2 S is important. Herein, we synthesized a host-guest metal-organic framework (MOF), i.e., RhB/UiO-66-N 3 (here, RhB means rhodamine B) by a mildly and simply way, as reaction-based ratiometric fluorescent nanosensor for selective detection and intracellular imaging of H 2 S. In the presence of H 2 S, the RhB/UiO-66-N 3 exhibits dual emissions at 425 nm and 575 nm under irradiation of single excitation wavelength. The blue fluorescence at 425 nm (F 425 ) is attributed to the H 2 S-mediated biorthogonal reduction of azide to amine, and the red fluorescence at 575 nm (F 575 ) originating from RhB is served as an internal reference. With increasing concentrations of H 2 S, the intensity of blue fluorescence increases while the intensity of red fluorescence has no obvious change. With F 425 /F 575 as readout, turn-on and ratiometric fluorescence detection of H 2 S was achieved with good selectivity and sensitivity. Interestingly, RhB/UiO-66-N 3 can be tuned from microscale to nanoscale sizes, and endows high stability under physiological conditions. The exogenous and endogenous H 2 S in live cells has been further targeted and imaged, demonstrating its considerable potential for extensive applications.
研究领域:
生物化学
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医学
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材料科学
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DOI
高影响因子
MICROCHIMICA ACTA
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2021
·Vol. 188
·期 2
·1-11
·
IF 5.833
Li Jingxian,Jiang Ding,Shan Xueling,Wang Wenchang,Ou Guofu,Jin Haozhe,Chen Zhidong
A novel aptasensor has been fabricated based on the resonance energy transform (RET) system from MoS 2 QDs-PATP/PTCA (donor) to NH 2 -UiO-66 (acceptor). The electrochemiluminescence (ECL) signal of PTCA was greatly amplified due to the decoration of MoS 2 QDs-PATP, and the NH 2 -UiO-66 was utilized to label the signal probe DNA (pDNA), which hybridizes with the exposed aptamer anchored on the surface of MoS 2 QDs-PATP/PTCA. With the target acetamiprid, the specific binding of acetamiprid to aptamer causes the connection between the donor and the acceptor to be interrupted and produce an “on” ECL signal. Thus, an “off-on” ECL sensing platform for sensitive and selective acetamiprid assay was designed. Under the optimal condition, the ECL signal of the aptasensor was found to be linearly related to the logarithm of the acetamiprid concentration ranging from 0.1 fM to 0.1 μM with a detection limit of 0.064 fM. More importantly, the recovery rate of the ECL aptasensor was calculated to be 98.7 ~ 106% with a RSD lower 5.1% for the residual acetamiprid assay in real food samples, which indicated that the aptasensor has high potential for practical applications. Graphical abstract
研究领域:
分析化学
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环境科学
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食品科学
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DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2020
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IF 9.038
Linna Song,Tianyu Zhao,Dongzhi Yang,Xuejiao Wang,Xinmin Hao,Yaxin Liu,Shiyi Zhang,Zhong-Zhen Yu
Lightweight and wearable fabrics with rapid self-detoxification functions are highly desired to resist chemical warfare agents (CWAs). Metal organic frameworks (MOFs) with high specific surface area and customizability are singularly attractive because of their ability to effectively capture and catalytically degrade CWAs. Herein, photothermal graphene-based nanocomposite fabrics are designed by wet-spinning and chemical reduction of graphene oxide fibers followed by in situ growth of UiO-66-NH 2 . The flexible graphene fabrics decorated with UiO-66-NH 2 nanoparticles exhibit an ultrafast photothermal catalytic decontamination of dimethyl 4-nitrophenyl phosphate (DMNP), a typical simulant of CWAs. The half-life of the degradation reaction decreases from 3.4 to 1.6 min under simulated solar light irradiation, a significant gain over the values reported in the literature. Furthermore, DMNP can be degraded in 20 min by the graphene/UiO-66-NH 2 fabric, and even after 5 cycles the degradation efficiency still retains more than 92 %. More importantly, the photothermal conversion of graphene and its instantaneous heat transfer to the UiO-66-NH 2 catalyst effectively accelerate the catalytic reaction kinetics, achieving the fast detoxification of DMNP. The combination of catalytic degradation of MOFs with photothermal conversion effect of graphene makes the lightweight and flexible fabrics promising for protection against CWAs and other pollutants.
研究领域:
材料科学
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环境科学
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化学工程
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2019
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IF 7.015
Hui Wang,Sihan Tang,Yunxia Ni,Chongrui Zhang,Xiangwei Zhu,Qiang Zhao
Interface compatibility between hydrophilic metal-organic frameworks (MOFs) and hydrophobic polydimethylsiloxane (PDMS) is less effectively reconciled through supramolecular modifications such as surfactant and polymer wrapping. Here we report a covalent cross-linking strategy to strengthen MOFs ~ PDMS interfaces. Zirconium MOFs (UiO-66-NH 2 ) were modified with trimethoxysilan (TMS), which could further react with silanol terminated PDMS to enhance UiO-66 ~ PDMS interface compatibility. High content UiO-66-TMS (up to 50 wt%) were loaded into PDMS while retaining good membrane formation ability, mechanical properties and pervaporation selectivity, in contrast to pristine UiO-66-NH 2 that decreases membrane strength and separation performances even at much lower loading content (10 wt%). Flux of mixed matrix membranes in dehydrating ethanol-water mixtures was highly improved while retaining the selectivity. It allows for the efficient production of concentrated ethanol (equivalent flux: 2234 g/m 2 h; ethanol in permeate: 53 wt%) from dilute feed through two-times consecutive pervaporation at 40 °C. Moreover, the membrane with covalently enhanced interfaces exhibit stable performance during 100 h continuous operation.
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2022
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IF 9.136
Zhimin Guo,Nan Li,Shixiang Zuo,Chenghong Qiang,Wei Zhan,Zhengping Li,Jiangquan Ma
Piezoelectric materials, which could collect and convert mechanical energy into electrical energy, have recently emerged as promising catalysts for pollutants removal sustainably. Unfortunately, it remains a challenge to enhance the intrinsic piezoelectric property of piezoelectric materials. Herein, for the first time, the polar molecule adenine was introduced as a linking agent in the synthesis process of Zr-based UiO-66 (denoted as AD-U) to enhance the structure asymmetry and piezoelectric properties of UiO-66. The piezoresponse force microscopy (PFM) and ferroelectric hysteresis loop demonstrated that AD-U catalyst exhibited significantly enhanced piezoelectric potential than UiO-66. Furthermore, a series of electrochemical characterization evidenced that AD-U displayed higher charge separation efficiency than UiO-66. As expect, the optimized AD-U shown promoted diclofenac sodium (DCF) piezoelectric degradation efficiency by harvesting stirring energy compared with pure UiO-66. The electron paramagnetic resonance (EPR) spectra and trapping agent experiments convinced that h + play the major role for destroying the DCF molecules. Moreover, three possible degradation pathways of DCF were put forward by DFT and liquid chromatography mass system (LC-MS). Our work offers a new pathway to enhance piezoelectric property of MOFs and extend the application of MOFs in the field of piezocatalysis.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
CATALYSIS LETTERS
·
2020
·Vol. 151
·期 3
·734-747
·
IF 2.482
Zhang Xiaorui,Chen Chen,Jiang Caiyun,Zhou Haifei,Cao Wang,Wang Yuping
Abstract A new type of Ag 3 PO 4 /UiO-66-NH 2 Z-scheme heterojunction nanocomposite with visible light catalytic activity was successfully prepared. The synthesis of the composite was confirmed by XRD, FT-IR, SEM, TEM, EDS, XPS. The Ag 3 PO 4 /UiO-66-NH 2 Z-scheme heterojunction can effectively improve the utilization of visible light. The optimal Ag/U/1/4 composite has the highest degradation efficiency for methylene blue (MB, 30 mg/L) in 90 min (80%) and Norfloxacin (NOR, 10 mg/L) in 150 min (85%). The decrease of Nyquist radius and the enhancement of photocurrent response indicated that the combination of photogenerated electron–hole pair in Ag 3 PO 4 /UiO-66-NH 2 composite material is significantly inhibited. N 2 adsorption–desorption and zeta potential results indicated that biggish specific surface area and negative zeta potential value are more favorable for the adsorption of the cationic dye MB. The cyclic test verified the good stability of Ag 3 PO 4 /UiO-66-NH 2 heterojunction material. Furthermore, the photocatalytic degradation mechanism of MB was discussed by introducing different traps to inhibit the possible active substances in the degradation process. This work testified that an efficient photocatalytic composite based on metal–organic frameworks can be used for the degradation of pollutants. Graphic Abstract
研究领域:
材料科学
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环境科学
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光催化
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Wenwen Li,Chuncai Zhou,Chen Li,Wenrui Zhu,Jiaqian Shi,Guijian Liu
To alleviate the supply–demand contradiction of gallium metal (Ga), this study reports a method of preparing 2-CNT/UiO-66-NH 2 composite materials by combining carbon nanotubes (CNTs) with UiO-66 series metal–organic frameworks (MOFs) to improve the recovery and utilization efficiency of Ga in solution. The adsorbent material is used for selective adsorption and recovery of Ga in aqueous solutions. The physical properties of the composite adsorbent, such as morphology, structure, and elemental composition, were explored by analyzing the surface characteristics of the samples. The impacts of variables like the amount of adsorbent used, time, solution concentration, pH value, and coexisting ions on adsorption efficiency were explored during the experiment. The results indicate that ion exchange and chelation play a major role in the adsorption of Ga by 2-CNT/UiO-66-NH 2 , and Ga ions can be separated and recovered from the mixed solution through selective adsorption. At 313 K and pH = 8, the greatest amount of adsorption is 925.44 mg/g, and the rate at which it is absorbed can reach 99% when the adsorption time is only 1 h. The hybrid absorbent generally has a high adsorption efficiency and good selective adsorption performance for Ga, providing more efficient and economical technical assistance for the future recovery and exploitation of Ga supplies.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
Small
·
2024
·Vol. 20
·期 34
·2401914
·
IF 13
Zhaohui Fang,Xiaoyang Yue,Quanjun Xiang
Metal halide perovskite quantum dots (QDs) are widely studied in the field of photocatalytic CO 2 due to their strong light absorption and long carrier migration length. However, it can not exhibit high catalytic performance because of the radiative recombination and the lack of effective catalytic sites. Metal organic frameworks (MOFs) encapsulated QDs can not only solve the aforementioned problems, but also maintain their own unique characteristics with ultra-high specific surfaces area and abundant metal sites. In this work, lead-free bismuth-based halide perovskite QDs are encapsulated into Zr-based MOF (UiO-66), which combines the advantages with high power conversion efficiency of QDs and the high surface area and porosity of UiO-66. In addition, benefiting from the close contact between the Cs 3 Bi 2 Br 9 QDs and the UiO-66 enables the photogenerated electrons in the QDs to be rapidly transferred to the MOF. As a result, the Cs 3 Bi 2 Br 9 @UiO-66 composite exhibits a higher yield for photocatalytic CO 2 reduction than that of the prepared large-sized composite of Cs 3 Bi 2 Br 9 and UiO-66.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYTICAL SCIENCES
·
2024
·Vol. 40
·期 6
·1081-1087
·
IF 1.8
Mei Xuqiao,Zeng Zhenhua,Xu Wenxin,Yang Huicong,Zheng Yuanhai,Gao Haimin,Wu Chuncai,Zheng Yanping,Xu Qiaoli,Wang Guowei,Xu Yuhuang,Wu Ayang
CA125 (carbohydrate antigen 125) is an important biomarker of ovarian cancer, so developing effective method for its detection is of great significance. In the present work, a novel sandwich-like electrochemical immunosensor (STEM) of CA125 was constructed by preparing nanoribbon-like Ti 3 C 2 T x MXenes (Ti 3 C 2 T x NR) to immobilize primary antibody (PAb) of CA125 and UIO-66-NH 2 MOFs structure to immobilize second antibody (SAb) and electroactive toluidine blue (Tb) probe. In this designed STEM assay, the as-prepared Ti 3 C 2 T x NR nanohybrid offers the advantages in large surface area and conductivity as carrier, and UIO-66-NH 2 provided an ideal platform to accommodate SAb and a large number of Tb molecules as signal amplifier. In the presence of CA125, the peak currents of Tb from the formed STEM structure increase with the increase of CA125 level. After optimizing the related control conditions, a wide linear range (0.2–150.0 U mL −1 ) and a very low detection limit (0.05 U mL −1 ) of CA125 were achieved. It’s thus expected the developed STEM strategy has important applications for the detection of CA125. Graphical abstract
研究领域:
生物医学工程
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分析化学
·
肿瘤学
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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）