Molecular Catalysis
·
2024
·
IF 3.9
Pushuang Xing,Cong Li,Yixin Chen,Rong-Lan Zhang
PMoV 2 was encapsulated in four MOFs (MIL-101, HKUST-1, UiO-67, ZIF-8) with different cavity sizes and window sizes using a hydrothermal synthesis method. Then, a layer of mesoporous silica was coated on the surface of the MOFs to obtain four designed three-layer encapsulated catalysts 30%PMoV 2 @MOF@mSiO 2 . The physicochemical properties of the catalysts were characterized through various characterization methods, and the influence of different MOF window sizes of the four catalysts on the removal rate of four thiophene sulfides was investigated. The optimal reaction conditions were also explored for the optimal catalyst. The results indicate that under simulated fuel of 2400 ppm, 30%PMoV 2 @UiO-67@mSiO 2 owns the highest catalytic activity. Under optimal conditions, the total removal rate of four thiophene compounds was 91.52 %, and after ten cycles, the efficiency could still reach 86.24 %. This is attributed to the sufficient cavity size of UiO-67, which provides assurance for the loading of PMoV 2 and the large window size, making it possible for the smooth reaction between sulfides and PMoV 2 .
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MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Suqi Liu,Xiaowei Wu,Shihao Chen,Cong Liu,Wanqi Zhang,Mingyi Yang,Jiyu Cheng,Guoquan Lu,Zhenhe Wang,Wei Chen,Yuge Guan,Linjiang Pang,Xinghua Lu
Linalool, a terpenoid alcohol with bacteriostatic properties, was detected in sweetpotato suffering from black spot disease. In this research, a composite material based on HKUST-1/MWCNT-gel@MIP was employed to detect the linalool content in these infected sweetpotatoes. The micro-morphology and crystal structure of the composite were characterized using scanning electron microscopy (SEM), fourier transform infrared (FTIR), and x-ray diffraction (XRD). Experimental results demonstrated that the quartz crystal microbalance (QCM) gas sensor of HKUST-1/MWCNT-gel@MIP composite exhibited high sensitivity (0.873 Hz/ppm), a low detection limit (0.237 ppm), a small standard deviation (0.83 %), good reproducibility, and outstanding selectivity. The QCM gas sensor data from actual samples showed a strong correlation with gas chromatography-mass spectrometry (GC–MS) results (r = −0.976, p < 0.01), demonstrating its exceptional ability to identify linalool. Thus, it can be used for early detection of sweetpotato black spot disease.
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Journal of Environmental Chemical Engineering
·
2022
·
IF 7.968
Xian Liu,Like Chen,Yibo Gao,Jiebin Li,Junyong Sun,Tian Gan
In this context, an innovative design of a molecularly imprinted polymer (MIP) capped Au@HKUST− 1 nanocapsules−based electrode was described for highly sensitive and selective detection of isoproturon herbicide. The Au@HKUST− 1 nanocapsules were constructed by in−situ growth of nanoscaled HKUST− 1 crystals on Cu 2 O core materials and subsequent encapsulation of Au nanoparticles inside the hollow HKUST− 1 walls via galvanic replacement reaction between AuCl 4 − and Cu 2 O. After a further surface imprinting−directing polymerization process in the presence of hydrophobic Au@HKUST− 1, a high−performance electrochemical sensing platform was obtained and used for recognition and quantification of isoproturon. Under the optimal experimental conditions, a linear relationship was observed covering the linear range of 0.0010 − 45 μM with an ultra−low detection limit of 0.45 nM. In addition, the Au@HKUST− 1 @MIP modified electrode had higher sensing specificity for isoproturon in the application of water samples with recoveries in the range of 99.07 − 105.8% and a relative standard deviation of < 4%.
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FUEL
·
2021
·
IF 6.609
Liying Guo,Jinghua Du,Chengbin Li,Gaohong He,Yonghou Xiao
Developing high-efficiency adsorbents is crucial for removing aromatic sulfur containing compounds from the fossil fuels. HKUST-1 is considered as a promising candidate of adsorbents for deep desulfurization. However, the typical HKUST-1 possesses only micropores, which restricts the diffusion and limits the desulfurization capacity. Herein, we proposed a mixed-linker defect strategy to construct a bimodal micro-mesoporous HKUST-1 to enhance adsorptive removal of benzothiophene (BT) from fuels. A rapid microwave-assisted synthetic route was developed for preparing a series of micro-meso porous OH-HKUST-1 -x ( x = 0.1, 0.2 and 0.3) by adjusting the ratio of 5-hydroxyisophthalic acid to benzene-1,3,5-tricarboxylate acid. This series of hierarchically porous metal-organic frameworks (MOFs) features 0.7–0.8 nm and 3.4–3.8 nm micropore and mesopore, respectively. The effects of linker defects on the chemical and physical properties of the materials were systematically studied. The X-ray diffraction patterns showed that the as-synthesized OH-HKUST-1 -x containing hydroxyl defects still retained the original crystal structure. The OH-HKUST-1 -x exhibited a higher desulfurization efficiency in comparison with HKUST-1, because with increasing the mole ratio of the mixed linkers, larger pore diameters were generated. The bimodal micro-mesoporous structure facilitates adsorbates diffusion and leads to higher exposure of the unsaturated adsorptive site of Cu 2+ than the microporous structure. The as-synthesized OH-HKUST-1-0.2 displayed the best performance towards adsorptive removal of BT, the static and breakthrough adsorption capacity achieved 26.30 mg S g −1 and 0.0490 mmol g −1 , respectively. Additionally, after the OH-HKUST-1-0.2 was regenerated six times it still had a desulfurization performance as 88.3% of the fresh adsorbent.
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JOURNAL OF HAZARDOUS MATERIALS
·
2019
·
IF 7.65
Rongzheng Zhang,Lei Wang,Juan Han,Jiacong Wu,Chunmei Li,Liang Ni,Yun Wang
Enhancing the catalytic activity and stability of enzymes is of great importance in the development of green chemical and cost-effective application, with removal of bisphenol A (BPA) as a prominent example. Engineering immobilization carriers and immobilization methods of enzymes endows great potential to achieve above goal. Until now, these reports have focused on employing the metal-organic frameworks (MOFs) to increase the stability and reusability of enzymes, an enhancement in its catalytic activity has yet to be addressed. This work introduced a biomimetic mineralization process for facile synthesis of laccase@HKUST-1 biocomposite under mild condition. By exploiting the activity of laccase@HKUST-1, we demonstrated, for the first time, that the integration of laccase and HKUST-1 containing cofactor Cu 2+ ions leaded to 1.5-fold enhancement in the catalytic activity compared with free laccase, which was due to the synergistic enhancement of substrate oxidation. Indeed, the laccase@HKUST-1 biocomposite could function as active biocatalysts under biologically challenging conditions, such as acidic condition, high temperature, organic solvent, and continuous operation. The oxidation of phenols, such as BPA, with laccase@HKUST-1 reached higher catalytic performance than free laccase, and gave 100% degradation efficiency within 4 h. This study provides a feasible method to improve the activity and stability of laccase, which enable completely remove of BPA from the environment.
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PubMed
高影响因子
TALANTA
·
2024
·
IF 5.6
Beibei Wang,Wenrui Zhao,Lin Wang,Kai Kang,Xianrui Li,Duo Zhang,Jujie Ren,Xueping Ji
Herein, a highly novel and effective electrochemiluminescence (ECL) sensor based on metal-organic framework (MOF, HKUST-1) derived CuO nanoneedles (HKUST-1 derived CuO NNs), gold nanoparticles (AuNPs) and TiO 2 was developed for ultrasensitive detection of catechol and luteolin. The HKUST-1 derived CuO NNs were employed as luminophore for the first time, which were successfully fabricated by using HKUST-1 as precursor. The results revealed that the HKUST-1 derived CuO NNs exhibit excellent ECL activity ascribed to its abundant active site and the high specific surface area, thus obviously promoting the separation and transfer of charge and further improving the current density of ECL sensor. To binary-amplify the signal of the ECL sensor, the AuNPs and TiO 2 nano-materials with good biocompatibility, great electron transport efficiency and high catalytic activity were used as co-reaction accelerators in the ECL process. Dependent on the above brilliant strategy, the proposed ECL sensor achieved wide linear ranges from 3 × 10 −9 – 1 × 10 −4 M for catechol and 1 × 10 −8 – 2 × 10 −4 M for luteolin, with the detection limits of 1.5 × 10 −9 M for catechol and 5.3 × 10 −9 M for luteolin, respectively. Furthermore, the ECL sensor exhibited outstanding selectivity, repeatability, stability and obtained great feedback on determination of catechol and luteolin in actual samples. The method not only filled a gap in the ECL application of MOF-derived materials but also provided a novel sight for design other highly efficient luminescent materials.
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RSC Advances
·
2014
·Vol. 5
·期 7
·5164-5172
·
IF 3.708
Yuhao Xiong,Fanggui Ye,Cong Zhang,Shufen Shen,Linjing Su,Shulin Zhao
A novel and inexpensive approach was adopted to develop magnetic porous γ-Fe2O3/C@HKUST-1 composites for the adsorption of dyes and heavy metal ions from aqueous solution. The γ-Fe2O3/C with unique functional groups present such as –OH and –NH2 was used as the support to directly grow HKUST-1 by a stepwise liquid-phase epitaxy process. The crystallographic, morphology, and magnetic properties as well as porosity of the as-synthesized γ-Fe2O3/C @HKUST-1 composites were carefully studied by XRD, SEM, TEM, XPS, TGA, and BET. The results indicated that the BET surface area, micropore volume, and saturation magnetization of the γ-Fe2O3/C @HKUST-1 are 993.4 m2 g−1, 0.69 cm3 g−1, and 12.6 emu g−1, respectively. In addition, a uniform distribution of ultrafine γ-Fe2O3 nanoparticles with an average diameter of 2–3 nm was observed in the γ-Fe2O3/C@HKUST-1 composites. Our results showed that methylene blue (MB) and Cr(VI) (used as a model for typical dye pollutants and heavy metal ions) are effectively removed from aqueous solutions by γ-Fe2O3/C@HKUST-1. The maximum adsorption capacities were 370.2 and 101.4 mg g−1 of adsorbent for MB and Cr(VI), respectively. Moreover, a removal efficiency of about 90% was retained after five cycles of consecutive adsorption–desorption. The adsorption kinetics data were well described by a pseudo-second-order model (R2 > 0.99), and equilibrium data were well fitted to the Langmuir isotherm model (R2 > 0.99). Finally, our results suggested that the γ-Fe2O3/C@HKUST-1 composites have a great potential to be employed for treatment of wastewater containing MB and Cr(VI).
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Journal of Materials Chemistry A
·
2020
·Vol. 9
·期 7
·4066-4074
·
IF 11.301
Hanzhuo Zhang,Yaseen Muhammad,Xinfang Cui,Zhengsheng Zhang,Long Liu,Zhe Chu,Jing Li,Yanjuan Zhang,Syed Jalil Shah,Zhenxia Zhao
Carboxymethyl cellulose-foam-supported HKUST-1@graphdiyne (HK@GDY/CMC-B) was constructed with high thermal conductivity and directional channels to enhance the ad-/de-sorption efficiency of acetaldehyde. Characterization results showed that (1) HKUST-1 grew within CMC and GDY via an in situ tri-phase cross-linking strategy, forming a special “alkynyl|Cu|COOH” interface, which maintained the high BET surface area (945.1 m2 g−1) of the HK@GDY/CMC-B foam and established a tight connection among the different components of the composite; (2) the π-conjugated carbon structure of GDY and the unique “alkynyl|Cu|COOH” interface within HK@GDY/CMC-B accelerated the phonon conduction and significantly enhanced the thermal conductivity of HK@GDY/CMC-B (336 mW m−1 K−1); (3) the directional channels and the hierarchical pore structure with a unique interface in the HK@GDY/CMC-B foam facilitated the diffusion and adsorption of VOCs; (4) the compact “alkynyl|Cu|COOH” interface generated more unsaturated Cu(II) and Cu(I) sites and increased adsorbent surface polarity to capture acetaldehyde. Consequently, the obtained HK@GDY/CMC-B exhibited an excellent acetaldehyde adsorption capacity of up to 11.0 mmol g−1, which was 1.3–3.4 times higher than that of many state-of-the-art adsorbents. Kinetics performance data revealed that the diffusivity of acetaldehyde on the HK@GDY/CMC-B foam increased by 60% compared to that of the pristine HKUST-1. Similarly, the desorption rate of HK@GDY/CMC-B was 2.2–6.5 times faster than that of several state-of-the-art adsorbents under similar temperature programmed desorption. This greatly realized an energy-conserving approach for adsorbent regeneration. Based on these findings, the current tri-phase cross-linking strategy can be deemed as an efficient tactic to further improve the adsorption efficiency of MOFs for fast adsorption of VOCs on the commercial level.
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JOURNAL OF CHROMATOGRAPHY A
·
2015
·
IF 4.169
Tao Bao,Juan Zhang,Wenpeng Zhang,Zilin Chen
Much attention is being paid to applying metal–organic frameworks (MOFs) as stationary phases in chromatography because of their fascinating properties, such as large surface-to-volume ratios, high levels of porosity, and selective adsorption. HKUST-1 is one of the best-studied face-centered-cubic MOF containing nano-sized channels and side pockets for film growth. However, growth of HKUST-1 framework inside capillary column as stationary phase for capillary electrochromatography is a challenge work. In this work, we carry out the growth of HKUST-1 on the inner wall of capillary by using liquid-phase epitaxy process at room temperature. The fabricated HKUST-1@capillary can be successfully used for the separation of substituted benzene including methylbenzene, ethylbenzene, styrene, chlorobenzene, bromobenzene, o -dichlorobenzene, benzene series, phenolic acids, and benzoic acids derivates. High column efficiency of 1.5 × 10 5 N/m for methylbenzene was achieved. The formation of HKUST-1 grown in the capillary was confirmed and characterized by scanning electron microscopy images, Fourier transform infrared spectra and X-ray diffraction. The column showed long lifetime and excellent stability. The relative standard deviations for intra-day and inter-day repeatability of the HKUST-1@capillary were lower than 7%.
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CHEMOSPHERE
·
2021
·
IF 7.086
Da Wang,Jinli Xu,Ying Zhu,Lingsha Wen,Jiexu Ye,Yi Shen,Tao Zeng,Xiaohui Lu,Jun Ma,Lizhang Wang,Shuang Song
A novel electrode composed of Cu nanosheets constructed from nanoparticles was synthesized by in situ electrochemical derivation from the metal-organic framework (MOF) HKUST-1. The prepared derivative electrode (HE-Cu) exhibited higher Faradaic efficiency (FE, 56.0%) of electrochemical CO 2 reduction (CO 2 R) compared with that of pristine Cu foil (p-Cu, 32.3%) at an overpotential of −1.03 V vs. a reversible hydrogen electrode (RHE). HE-Cu also exhibited lower onset potential of CO 2 R as well as inhibiting the H 2 evolution reaction. Electrochemical measurements revealed that HE-Cu exhibited higher CO 2 adsorption (1.58-fold) and a larger electrochemical active surface area (1.24-fold) compared with p-Cu. Physicochemical characterization and Tafel analysis showed that stepped Cu (211) surfaces, (200) facets and Cu edge atoms on HE-Cu contributed significantly to the enhanced CO 2 R activity and/or HCOOH and/or C2 product selectivity . The FEs of HCOOH and C2 products for HE-Cu increased 1.57-fold and 10.6-fold at an overpotential of −1.19 V vs. RHE compared with p-Cu. Although CH 4 was produced on p-Cu, its formation was totally suppressed on HE-Cu due to the increase of edge sites and (200) facets. Our study demonstrates that electroreduction of MOFs is a promising method to prepare novel and stable electrochemical catalysts with unique surface structures. The fabricated derivative electrode not only promoted electrochemical CO 2 R activity but also exhibited high C2 product selectivity.
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CATALYSIS LETTERS
·
2019
·Vol. 150
·期 3
·815-825
·
IF 2.372
Huang Yan-Feng,Zhang Lu,Ma Li,Li Ying,Zhong Chongli
Abstract Fe 3 O 4 @Cu/C and Fe 3 O 4 @CuO composites were achieved using nanoparticle-encapsulated MOFs Fe 3 O 4 @HKUST-1 as both a precursor and a self-sacrificing template. Fe 3 O 4 @HKUST-1 was thermally converted into magnetic Fe 3 O 4 @Cu/C and Fe 3 O 4 @CuO composites in different atmosphere (N 2 and air). The resulting composites not only kept superparamagnetic characteristics, but also exhibited improved peroxidase-like catalytic activity and high stability when compared to the precursor Fe 3 O 4 @HKUST-1. The morphology, crystal structure, magnetic and porous properties of Fe 3 O 4 @Cu/C and Fe 3 O 4 @CuO composites were characterized, and the kinetics parameters and the influence factors on the peroxidase-mimicking activity such as temperature, pH and H 2 O 2 concentration were evaluated. On account of the excellent peroxidase-like activity, the as-prepared Fe 3 O 4 @Cu/C and Fe 3 O 4 @CuO composites were successfully used for the catalytic removal of methylene blue (MB) dye with H 2 O 2 oxidant. This work provides an effective way to fabricate highly reactive MOFs-derived biomimetic catalysts, which have potential applications in bioassays and pollutant degradation. Graphic Abstract Fe 3 O 4 @Cu/C and Fe 3 O 4 @CuO composites were achieved using Fe 3 O 4 nanoparticle-encapsulated HKUST-1 as self-sacrificial templates and demonstrated excellent peroxidase-like activity.
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COLLOIDS AND SURFACES B-BIOINTERFACES
·
2025
·
IF 5.6
Peixuan Zou,Yusong Pan,Wenjie Luo,Run Huang,Xiuling Lin,Yinghai Xie
Chemo-photothermal synergistic therapy is an effective method for tumor treatment. Herein, the CuS/HKUST-1@PDA drug carrier was successfully prepared by a simple combination of in-situ partial vulcanization and in-situ polymerization technologies. The micro-structure, morphology, and functional groups of the prepared samples were characterized by XRD, SEM, TEM, BET, and FTIR technologies. The drug loading experiment verified that the CuS/HKUST-1@PDA possesses an excellent doxorubicin (DOX) drug loading capacity, whose drug loading capacity is as high as 88.7 %. The drug release indicated that CuS/HKUST-1@PDA drug carrier inherited pH-responsive drug release behavior, which it can release DOX in acidic conditions resembling the tumor microenvironment, while effectively containing the drug within the PDA coating under neutral conditions. The CuS/HKUST-1@PDA drug carrier demonstrated outstanding biocompatibility, sustaining cell viability above 80 % across a concentration range of 1.5–15 μg/mL. Moreover, the drug carrier realized chemo-Photothermal synergistic therapy triggered by near-infrared light in tumor treatment, reducing tumor cell viability to 28 % during in vitro cellular experiments. The innovative design and effective tumor treatment ability of the CuS/HKUST-1@PDA drug carrier highlight its significant potential in anticancer therapy.
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