INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2023
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IF 8.2
Huanggen Yang,Pei Zhang,Qi Zheng,Muhammad Usman Hameed,Saleem Raza
The presence of pollutants in drinking water has become a significant concern recently. Various substances, including activated carbon, membranes, biochar, etc., are used to remove these pollutants. In the present study, a new composite comprising cotton fabric and a mixture of Metal-Organic Frameworks (MOFs) was synthesized and used as an adsorbent for eliminating pollutants from wastewater. At first, the UiO-66 MOFs were prepared by a simple method of reacting Zirconium (IV) chloride (ZrCl 4 ) and p-Phthalic acid (PTA) after successful preparation of UiO-66 then modified its surface with amino functional groups by reacting with APTES to obtain UiO-66-NH 2 . Moreover, the cellulose cotton fabric (CF) surface was modified with Polydopamine (PDA) and obtained CF@PDA. Further, with the help of EDC-HCl and NHS, the UiO-66-NH 2 grafted on the surface of the CF@PDA and finally obtained CF@PDA/UiO-66-NH 2 . In addition, the adsorption study was performed toward RhB dye and Pb(II) metal ion pollutants. The maximum adsorption toward RhB dye was 68.5 mg/g, while toward Pb(II) metal ions was 65 mg/g. In addition, the kinetic study was also conducted and the result favoured the Pseudo-second order kinetic study. The adsorption isotherm was also studied and the Langmuir model was more fitted as compared with the Freundlich model. Moreover, the material has excellent regeneration and recycling ability after ten cycles. The significant adsorption ability, the novel combination of cotton and MOFs, and the recycling feature make our material CF@PDA/UiO-66-NH 2 a promising potential absorbent material for wastewater treatment and even in other important areas of water research.
研究领域:
环境科学
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材料科学
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化学工程
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水处理
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DOI
PubMed
高影响因子
Journal of Environmental Sciences
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2022
·
IF 6.796
Ping Chen,Yalan Wang,Xiaoqin Zhuang,Haijin Liu,Guoguang Liu,Wenying Lv
Zr-based metal-organic frameworks (MOFs) have been developed in recent years to treat heavy metals, e.g. hexavalent chromium Cr 6+ pollution, which damages the surrounding ecosystem and threaten human health. This kind of MOF is stable and convenient to prepare, but has the disadvantage of low adsorption capacity, limiting its wide application. To this end, a novel formic acid and amino modified MOFs were prepared, referred to as Form-UiO-66-NH 2 . Due to the modification of formic acid, its specific surface area, pore size, and crystal size were effectively expanded, and the adsorption capacity of Cr 6+ was significantly enhanced. Under optimal conditions, Form-UiO-66-NH 2 exhibited an excellent adsorption capacity (338.98 mg/g), ∼10 times higher than that reported for unmodified Zr-based MOFs and most other adsorbents. An in-depth study on the photoelectronic properties and pH confirmed that the adsorption mechanism of Form-UiO-66-NH 2 to Cr 6+ was electrostatic adsorption. After modification, the improvement of Cr 6+ adsorption capacity by Form-UiO-66-NH 2 was attributed to the expansion of its specific surface area and the increase in its surface charge. The present study revealed an important finding that Form-UiO-66-NH 2 elucidated selective adsorption to Cr 6+ in mixed wastewater containing toxic heavy metal ions and common nonmetallic water quality factors . This research provided a new acid and amino functionalization perspective for improving the adsorption capacity of Zr-based MOF adsorbents while simultaneously demonstrating their pertinence to target contaminant adsorption.
研究领域:
环境科学
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材料科学
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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 DISPERSION SCIENCE AND TECHNOLOGY
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2023
·
IF 2.2
Shanghai Dong,Liying Wang,Weiyi Lou,Yunxin Shi,Lu Li,Zhenzhu Cao,Yongfeng Zhang,Junmin Sun
Nowadays, more and more regions of the earth are facing energy crisis and environmental pollution issues. Photocatalytic technology converts solar energy into chemical energy in an environmentally friendly way, which is considered as an effective method to solve such issues. In this work, a series of TiO2/Bi-MOFs (TiO2/Bismuth based metal-organic frameworks) composites were successfully prepared by a simple one-pot solvothermal method, and the photocatalytic activity of the composites was evaluated by photocatalytic degradation of rhodamine B (RhB) dye under visible light, and the catalytic activities of the samples were also investigated for methyl orange (MO), methylene blue (MB) and tetracycline (TC). The samples were characterized by using various analytical techniques. The composites exhibited better catalytic properties compared with the original single component, which was attributed to the high dispersion of TiO2 and the synergistic effect of efficient interfacial charge transfer between TiO2 and Bi-BTC (BTC: benzene-1,3,5-tricarboxylate, Scheme 1). Among the results, the photocatalytic degradation efficiencies of 25-T/B (T/B, TiO2/Bi-BTC: TiO2/bismuth homobenzotrizoate composites), 35-T/D (T/D, TiO2/Bi-BDC: TiO2/bismuth terephthalate composites) and 25-T/P (T/P, TiO2/Bi-BPDC: TiO2/bismuth biphenyldicarboxylate composites) for RhB were all 99% after 40 min of visible light irradiation. Furthermore, the degradation efficiency of 25-T/B for RhB could maintain high catalytic activity after five cycles, indicating the high stability of the catalyst. Overall, the materials presented in this work are a series of reusable, high catalytic activity and economical photocatalysts for water purification, and the effects of different ligands on the photocatalytic activity of TiO2/Bi-MOFs composites were investigated.
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
Nano-Micro Letters
·
2024
·Vol. 16
·期 1
·1-15
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IF 31.6
Huang Mengqiu,Li Bangxin,Qian Yuetong,Wang Lei,Zhang Huibin,Yang Chendi,Rao Longjun,Zhou Gang,Liang Chongyun,Che Renchao
Metal–organic frameworks-derived CoNiM@C (M = Cu, Zn, Fe, Mn) microspheres were successfully fabricated with custom-built magnetic alloy-carbon heterogeneous interfaces.
Flower-like CoNiMn@C microspheres achieve broadband electromagnetic wave absorption with effective absorption bandwidth of 5.8 GHz at only 2.0 mm thickness.
Visual interface charge distribution and hierarchical magnetic coupling were observed to elucidate the electromagnetic energy absorption mechanism.
研究领域:
材料科学
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电磁学
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DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
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2020
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IF 6.182
Yuehong Xie,Chao Feng,Yuan Guo,Shiang Li,Cheng Guo,Yi Zhang,Jide Wang
This paper introduces a facile strategy to fabricate trifunctional electocatalysts through one pool treatment on MOFs to obtain carbon nanotube coated ultrafine CoNi alloy (CoNi@NCNTs) nanocomposites with N-doped rich-defect and abundant cavity structure. During the pyrolysis process, volatile CNx species from dicyandiamide were trapped by ZIF-67@Ni-ZIF nanosheets, simultaneously introducing nitrogen atom into carbon matrix to achieve the rich-defect porous nanotubes and abundant cavity structure. The as-prepared nanomaterials can simultaneously boost the ORR, OER and HER catalytic activity with strong durability. Significantly, the CoNi@NCNTs-700 exhibits excellent electrocatalytic activity including half-wave potential (E ORR, 1/2 ) of 0.80 V, lower operating voltage (E OER, 10 ) of 1.60 V at 10 mA cm −2 and potential difference (ΔE) of 0.80 V between E OER, 10 to E ORR, 1/2 in 0.1 M KOH, and low overpotential (E HER, 10 ) of −0.130 V reaching 10 mA cm −2 in acidic medium. The remarkable activity is ascribed to defect-rich porous carbon nanotubes structure and the synergistic effect between CoNi alloy nanoparticles, N-dope carbon and CoNi-Nx. And hollow structure facilitates to improve conductivity and stability. This work offers a useful archetypical template to design and construct efficient and stable trifunctional electrocatalysts, illustrating its viability for practical applications of energy conversion and storage devices.
研究领域:
材料科学
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电化学
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能源转换与存储
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DOI
高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
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2025
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IF 2.9
Qiang Xiong,Mengqi Liao,Haohao Ling,Hanhui Yu,Yingting Luo,Zhen Li
Full-scale water electrolysis for hydrogen production represents a critical component of clean energy systems. This study introduces a novel MOFs-derived catalyst that achieves full water electrolysis performance comparable to commercial catalysts but at a significantly reduced cost, offering a promising alternative for hydrogen production via water electrolysis. The hydrothermal method was employed to incorporate citric acid into the ZIF8@ZIF67 metal-organic framework. Following carbonization, the resulting catalyst effectively exposed cobalt active sites and markedly enhanced the specific surface area. A thorough investigation was conducted into the structural features and electrocatalytic properties of the catalyst. The catalyst demonstrated superior oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) activities, enabling highly efficient water electrolysis. At a current density of 10 mA cm⁻², the overpotential for OER was as low as 361 mV, while the HER overpotential was 168 mV. During overall water electrolysis, the catalyst achieved a voltage of 1.637 V, which is comparable to that of commercial catalysts (1.625 V).
研究领域:
能源材料
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电化学
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催化
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氢能
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纳米材料
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DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
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2022
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IF 7.336
Wenhui Fang,Jiaqi Dang,Ye Hu,Ying Wu,Shixian Xin,Bozhen Chen,Hong Zhao,Zengxi Li
Substituting oxygen evolution reaction (OER) by hydrazine oxidation reaction (HzOR) is a very efficient energy-saving strategy for water electrolysis. Therefore, exploring low-cost and efficient catalysts for HzOR and hydrogen evolution reaction (HER) is very significant to address the great challenge for hydrogen production . Herein, a series of vanadium-cobalt bimetal-organic frameworks [V x -Co-MOFs: x represents the mass fraction of V element: V/(V+Co)] are synthesized through a one-pot hydrothermal method . The V 41.7wt% -Co-MOF exhibits excellent multifunctional catalytic activity. The overall hydrazine splitting (OHzS) delivers 10 mA cm −2 at an ultralow cell voltage of 0.21 V. The superior performance can be ascribed to that the presence of cobalt-vanadium bimetals, which leads to the lattice disorder, an increase in specific surface area and mesoporous structure in V 41.7wt% -Co-MOF, thus ensuring the exposure of more active sites. Particularly, the in-situ Raman test indicates that V 41.7wt% -Co-MOF is partially converted into Co(OH) 2 in the process of electrolysis to form a heterostructure. DFT calculations further show the charge transfer between Co and V, along with the good synergy between V-Co-MOF and Co(OH) 2 improves the HER and HzOR performance of V 41.7wt% -Co-MOF. This study provides a promising Co-V based catalyst for energy saving hydrogen production .
研究领域:
催化
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材料科学
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能源材料
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电化学
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产品关联
DOI
高影响因子
CHINESE JOURNAL OF CATALYSIS
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2022
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IF 12.92
Linlin Wang,Xin Li,Leiduan Hao,Song Hong,Alex W. Robertson,Zhenyu Sun
To facilitate the electrochemical CO 2 reduction (ECR) to fuels and valuable chemicals, the development of active, low cost, and selective catalysts is crucial. We report a novel ECR catalyst consisting of CuO nanoparticles with sizes ranging from 1.4 to 3.3 nm anchored on Cu metal-organic framework (Cu-MOF) nanosheets obtained through a one-step facile solvothermal method. The nanocomposites provide multiple sites for efficient ambient ECR, delivering an average C 2 H 4 faradaic efficiency (FE) of ~50.0% at –1.1 V (referred to the reversible hydrogen electrode) in 0.1 mol/L aqueous KHCO 3 using a two-compartment cell, in stark contrast to a C 2 H 4 FE of 25.5% and 37.6% over individual CuO and Cu-MOF respectively, also surpassing most newly reported Cu-based materials under similar cathodic voltages. The C 2 H 4 FE remains at over 45.0% even after 10.0 h of successive polarization. Also, a ~7.0 mA cm −2 C 2 H 4 partial geometric current density and 27.7% half-cell C 2 H 4 power conversion efficiency are achieved. The good electrocatalytic performance can be attributed to the interface between CuO and Cu-MOF, with accessible metallic moieties and the unique two-dimensional structure of the Cu-MOF enhancing the adsorption and activation of CO 2 molecules. This finding offers a simple avenue to upgrading CO 2 to value-added hydrocarbons by rational design of MOF-based composites.
研究领域:
材料科学
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电化学
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纳米技术
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催化
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产品关联
DOI
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
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2020
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IF 4.551
Yunlei Zhang,Wen Guan,Hongyao Song,Yanan Wei,Pei Jin,Bing Li,Changhao Yan,Jianming Pan,Yongsheng Yan
Chemically functional microporous metal-organic frameworks (MOFs) crystals are attractive for catalysis applications, and recent results show that they can be immobilized on high stability substrates, such as carbon materials. In this work, g-C 3 N 4 supported UiO-66-type MOFs catalysts with only acid, base or acid-base bi-functional active sites, have been successfully synthesized via a green (aqueous solutions), mild (90 °C, atmospheric pressure), and one-pot modulated hydrothermal (MHT) method. The physical and chemical properties of the obtained catalysts were systematically characterized by different characterization methods. The results indicated that the synthesized catalysts have microporous structure, excellent thermostability and acid-base bi-functional active sites. One-pot synthesis of 5-hydroxymethylfurfural (5-HMF) from glucose was performed to investigate the activities of synthesized catalysts. Benefiting from the synergistic effects of the acid-base bi-functional active sites, the highest 5-HMF yield of 54.9% was achieved in an isopropanol-mediated DMSO system, under the optimal conditions. Moderate to excellent yields of 5-HMF were also obtained from one-pot conversions of other carbohydrates, including inulin , sucrose, cellobiose, maltose and starch , with our developed catalytic system. The one-pot production of 5-HMF from cellulose was also smoothly processed by the g-C 3 N 4 supported UiO-66-type MOFs catalysts in an IL-based system. This work offers a versatile strategy for developing supported UiO-66-type MOFs catalyst for a wide range of biomass transformation to platform chemicals.
研究领域:
催化化学
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生物质转化
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产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2018
·Vol. 28
·期 16
·1707356
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IF 13.325
Zhe Wang,Shuanggang Hu,Jian Yang,Ajuan Liang,Yongsheng Li,Qixin Zhuang,Jinlou Gu
Introduction of large pore in the primitive microporous metal–organic frameworks (MOFs) with tailorable particle size can endow them with desired properties for potential applications in the intracellular delivery of membrane-impermeable proteins. However, no research is found to focus on this topic until now. Herein, a monocarboxylic acid (MA) and organic base comodulation strategy is developed to synthesize the hierarchically porous UiO-66 nanoparticles. MA of dodecanoic acid is utilized to control the pore size while trimethylamine (TEA) plays a key role in modulating the nucleation of crystallization to regulate the particle size. In comparison with microporous UiO-66, a model protein of cytochrome c (Cyt c) could be efficiently loaded into the mesoporous MOFs (mesoMOFs). The size-dependent cellular uptake is also evaluated, and it is verified that mesoMOFs with particle size of 90 nm could be endocytosed into living cells with highest efficiency. These outstanding merits enable the current mesoMOFs not only to exhibit efficient encapsulation of Cyt c but also facilitate the protein delivery into the cytosol and subsequent endosomal escape. Given the exceptional chemical stability, hierarchically porous structure as well as tunable particle size, the elaborated mesoUiO-66 nanoparticles might offer a promising platform for a variety of biomedical applications.
研究领域:
材料科学
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纳米技术
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生物医学工程
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药物递送系统
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产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
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2025
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IF 7.3
Hongqi Liang,Fenglong Chen,Zhizhuo Liu,Litao Tian,Jingmei Xu
The design and preparation of low-cost and high-stability proton exchange membranes (PEMs) play an indispensable role in sustainable development and application expansion. In this study, sulfonic acid-amino difunctionalized hydrophilic metal–organic frameworks (MOFs) (named as TA-SNU6) were designed and synthesized as proton transport carriers to be incorporated into sulfonated poly(aryl ether ketone sulfone) (SPAEKS) to obtain high proton conductivity and single-cell performance. The experimental results show that abundant hydroxyl and acid–base groups significantly increase the proton transport efficiency in PEMs and improve the hydrophilicity and electrochemical performance of PEMs. The single-cell performance of the STSN-1% membrane was about 1.8 W cm–2. The proton conductivity was up to 190 mS cm–1, the mechanical properties were significantly improved, and the tensile strength reached 48 MPa. SPAEKS polymer with a specified degree of sulfonation was prepared by a stepwise polycondensation reaction, which showed excellent comprehensive properties after adding TA-SNU6 fillers. The STSN-1% composite membrane performs better than Nafion 211 and Nafion 117 in fuel cells. Therefore, it can be seen that this work has achieved certain results, which makes PEMs have excellent electrochemical performance, and provides a reference for the development of high-performance PEMs.
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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2019
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IF 5.107
Yuanming Tan,Zhongqiao Sun,Hao Meng,Yide Han,Junbiao Wu,Junli Xu,Yan Xu,Xia Zhang
MOFs/polymer hybrid membranes combine the special surface activity of MOFs and the excellent carries nature of porous polymer and thus exhibit unexpected adsorption/separation performances in the solid-phase extraction. In this paper, a new kind of MOFs/polymer composite membrane , MIL-68(Al)/PVDF have been fabricated for the first time through blending the MIL-68(Al) nanoparticles and polyvinylidene fluoride (PVDF) casting solution and following the lyotropic phase transition. Some means such as SEM, XRD and FT-IR are used to character the structure of these hybrid membranes. The membrane performances including the hydrophilic/hydrophobic properties, membrane porosity and membrane water flux are also measured. The effects of doping amount of MIL-68(Al) on the structure and performances of MIL-68(Al)/PVDF hybrid membranes are discussed. Two persistent organic pollutants : p -nitrophenol (PNP) and methylene blue (MB) are chosen as main adsorption objects to evaluate the adsorption activity of MIL-68(Al)/PVDF hybrid membranes. The influences of various conditions on the adsorption activities are investigated in detail and the optimum adsorption conditions are determined. All the MIL-68(Al)/PVDF hybrid membranes exhibit enhanced adsorption capacity compared to pristine PVDF, and the adsorption activities of hybrid membranes are promoted continually with the increasing doping contents of MIL-68(Al). The adsorption thermodynamics analysis indicates that the adsorption process is mainly characterized by Langmuir monolayer adsorption and chemical adsorption . The coordination bonding formed between NO 2 of PNP and Al(III) of MIL-68(Al), and the acid-base interaction between the sulfur of MB and Al(III) of MIL-68(Al) may be responsible to the highest removal efficiency of PNP and MB. The good dynamics adsorption and regeneration performances indicate the prospect applications of these MOFs/PVDF hybrid membranes in the separation of organic contaminants from industrial waste water.
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
高影响因子
危险品化学品经营许可证（带存储）