DALTON TRANSACTIONS
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2018
·Vol. 47
·期 18
·6394-6403
·
IF 4.099
Yanqin Li,Qi Gao,Lijuan Zhang,Yunshan Zhou,Yuxu Zhong,Ying Ying,Mingcai Zhang,Chunqian Huang,Yong'an Wang
Currently extensive effort is compulsively expended to decontaminate efficiently banned chemical war agents. In this work, H5PV2Mo10O40 molecules have been encapsulated in mesoporous MIL-101(Cr), which features two types of mesoporous cages (internal diameters of 29 Å and 34 Å) and microporous windows (diameters of 12 Å and 16 Å), leading to the formation of a new composite H5PV2Mo10O40@MIL-101(Cr) through a simple impregnation method. The composite was characterized thoroughly by elemental analysis, FT-IR spectroscopy, powder X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectroscopy, TG/DTA, and textural analysis thereby confirming the encapsulation of the H5PV2Mo10O40 into MIL-101(Cr). The decontamination efficiency of sulfur mustard (4 μL HD in 40 μL of petroleum ether) by 20 mg of the composite is found to be 97.39% in 120 min under ambient conditions. GC-MS analysis on the decontaminated products using 2-chloroethyl ethyl sulfide (CEES), which has been widely used as a simulant of sulfur mustard, showed that MIL-101(Cr) just decontaminates CEES by adsorption, while CEES can be decontaminated under ambient conditions by a synergetic combination of adsorption of MIL-101(Cr) and subsequent chemical oxidation degradation to nontoxic 2-chloroethyl ethyl sulfoxide (CEESO) due to the presence of highly dispersed H5PV2Mo10O40 within the composites.
研究领域:
材料科学
·
化学工程
·
环境科学
✓ 已验证
DOI
高影响因子
Frontiers in Chemistry
·
2021
·
IF 5.221
Zhang Hui,Zhou Liang,Li Jing,Rong Sijia,Jiang Jianping,Liu Shengquan
Herein, we report a novel carboxymethyl cellulose (CMC)/MIL-101 (Fe)/poly(β-cyclodextrin) (β-CDP) hydrogel with high photocatalytic activity. β-CDP can significantly enhance the photoactivity of MIL-101(Fe) in the hydrogel prepared by a simple solvothermal method. The structure and property of this composite hydrogel were characterized by Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. Tetracycline was selected as a model pharmaceutical antibiotic to evaluate the photocatalytic activity of the composite hydrogel under visible light irradiation and darkness, respectively. This composite hydrogel shows excellent activity for degrading pharmaceutical antibiotics under visible light irradiation. The increased photocatalytic activity can be attributed to β-CDP, which acts as a promoter and affords an efficient separation of photogenerated electron-hole pairs of MIL-101(Fe). Moreover, the composite hydrogel is shown to have good water retainability. The hydrogel is inexpensive and shows high photocatalytic activity. Hence, it can be used as an efficient photocatalytic material.
研究领域:
环境科学
·
材料科学
·
药学
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Yi-Hao Tong,Yu-Zhe Wu,Zhen-Liang Xu,Li-Han Luo,Sun-Jie Xu
This work was expected to develop a new loose NF membrane with facile materials to conduct dye/salt separation and endow it with versatile capacities to offer an applicable solution to treat textile wastewater. Ethylene vinyl alcohol (EVAL) was first chosen to fabricate loose nanofiltration (NF) membrane through non-solvent induced phase separation (NIPS) method. Besides, MIL-101(Fe) showed outstanding photocatalytic capacity in degrading organic molecules while a low-cost bio-inspired coating, catechol, was utilized to modify MIL-101(Fe). A combination of modified MIL-101(Fe) and EVAL could have a high water permeability (43.2 L·m −2 ·h −1 ·bar −1 ) with superior rejection to small molecule negative charged dyes (Chlorazol black T: 99.8%, Congo Red: 99.7%, Eriochrome black T: 98.4%) and low rejection to various salts (Na 2 SO 4 : 4.8 %, NaCl: 2.1 %, MgCl 2 : 2.9%, MgSO 4 : 4.9% and CaCl 2 : 3.3%). Meanwhile, the EVAL loose NF membrane with the best performance had excellent antifouling capacity and long-term stability in EBT/Na 2 SO 4 separation. Moreover, the membrane could degrade dyes to self-clean the membrane surface through photocatalytic process, which originated from the Fe-O clusters in MIL-101(Fe).
研究领域:
环境科学
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材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2022
·
IF 9.224
Yue Hu,Zhou Fang,Xinyi Wan,Xu Ma,Yuqi Wang,Mengyang Dong,Zhizhen Ye,Xinsheng Peng
Developing efficient water adsorbents for solar-driven atmospheric water harvesting (AWH) still remains a challenge due to the poor photothermal heating ability and slow sorption kinetics of most adsorbents. Postsynthetic ligand exchange (LE) provides an alternative strategy to prepare metal–organic framework (MOF) materials with varied structures and functions. In this work, multifunctional hollow MIL-101(Cr) with ferrocene dicarboxylic acid (Fc(COOH)2) ligand exchanged (HMF) nanospheres are prepared and utilized for efficient AWH. The resulted HMF nanospheres present great visible light absorption (>80%) and photothermal conversion ability (61.6%) due to the introduced Fc(COOH)2 ligand. The water adsorption and desorption rates of the HMF nanosorbent are 2.3 times and 4.5 times that of MIL-101(Cr). The fast water capture and solar-driven release kinetics of HMF nanosorbents indicate its great potential for actual water harvesting. The outdoor water collection experiment demonstrates that the areal water harvesting capacity of the HMF nanosorbent is 1720 g m–2 per cycle with packed thickness of 8 mm. HMF nanosorbents also demonstrate good antibacterial activity (91.4%), which is beneficial to the collection of healthy and safe water. This work provides a facile and practical method to design multifunctional MOFs from the molecular level by LE and to achieve solar-driven AWH and other fields.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Tian Zhao,Saiqun Nie,Pengcheng Xiao,Shilin Peng,Jiayao Chen,Jiangrong Yu,Fuli Luo,Yi Chen
The formation of zinc dendrites and by-products significantly affects the cycling performance of aqueous zinc-ion batteries (AZIBs). This study presents the first application of MIL-101(Cr) as a separator material in AZIBs, investigating the impact of various MIL-101(Cr) morphologies in cellulose-based separators on battery performance. The findings demonstrate that separators incorporating spherical MIL-101(Cr) morphology considerably enhance ion conductivity and the transport rate of Zn 2+ ions while effectively inhibiting corrosion reactions and dendrite growth. Notably, the spherical MIL-101(Cr)-based separator exhibited more than double the cycle life of Zn//Zn symmetric cells compared to those made from octahedral and nano-fusion morphologies, achieving over 750 h of operation. Additionally, a Zn//MnO₂ full cells utilizing this separator achieved a remarkable capacity retention of 83.6 % after 400 cycles, with a close-to-100 % Coulombic efficiency. This research underscores the critical role of MIL-101(Cr) morphology in enhancing the performance of AZIB separators, paving the way for innovative designs in future metal-organic framework (MOF)-based separators.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Chunlai Liu,Na Wang,Zelin Meng,Mingyang Song,Heming Zhao,Jianglei Hu,Fengwei Shi
The Knoevenagel reaction is one of the most significant reactions in the industrial synthesis of organic materials, pharmaceuticals, and biological compounds. In this study, 2-cyanoethyltriethoxysilane (CTES) was employed as a functionalizing agent to prepare carboxyl-functionalized silica (SBA-16-Cx) using a one-pot method. Subsequently, carboxyl groups served as anchoring points for Cr³⁺, and MOFs-modified SBA-16 (SBA-16-Cx@MIL) was obtained by in situ synthesis. The resulting materials were characterized using FT-IR, XPS, XRD, N 2 adsorption-desorption analysis, SEM, TEM, 13 C MAS NMR, and TG, which confirmed the successful synthesis of MIL-101 on the support. Meanwhile, the pore size of the composite was reduced from 5.1 nm (SBA-16) to 0.6 nm (SBA-16-C1.0@MIL). The condensation reaction of benzaldehyde with malononitrile was selected as a model reaction. The effects of various factors, including solvents, reactants molar ratios, temperature, catalyst dosage, and reaction time, on the reaction were studied. Under optimized conditions, the conversion rate of benzaldehyde reached 100 % and the catalyst demonstrated excellent stability for repeated use. The reaction follows second-order kinetics (R 2 >0.99), and the activation energy of the reaction was 17.18 kJ/mol. Finally, the mechanism of the catalytic process was proposed. This work provides a green catalytic route for the synthesis of α,β-unsaturated carbonyl compounds.
研究领域:
材料科学
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催化化学
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有机合成
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2020
·Vol. 25
·期 17
·3975
·
IF 3.267
Zhongbao Liu,Banghua Zhao,Yong Huang,Xin Qi,Fengfei Lou
An MIL-101(Cr) powder material was successfully prepared using the hydrothermal synthesis method, and then the original MIL-101(Cr) was combined with different mass fractions of CaCl2using the immersion method to obtain a MIL-101(Cr)/CaCl2composite material. The physical properties of the adsorbent were determined by X-ray powder diffraction (XRD), an N2 adsorption desorption isotherm test, and thermogravimetric analysis (TG). The water vapor adsorption performance of the metal-organic frameworks MOFs was tested with a gravimetric water vapor adsorption instrument to analyze its water vapor adsorption mechanism. Based on the SIMULINK platform in the MATLAB software, a simulation model of the coefficient of performance (COP) and cooling capacity of the adsorption refrigeration system was established, and the variation trends of the COP and cooling capacity of the adsorption refrigeration system under different evaporation/condensation/adsorption/desorption temperatures was theoretically studied. MIL101-(Cr)/CaCl2-20% was selected as the adsorption material in the adsorption refrigeration system through the physical characterization of composite materials with different CaCl2concentrations by means of adsorption water vapor test experiments. A closed adsorption system performance test device was built based on the liquid level method. The cooling power per unit and adsorbent mass (COP and SCP) of the system were tested at different evaporation temperatures (288 K/293 K/298 K); the adsorption temperature was 298 K, the condensation temperature was 308 K, and the desorption temperature was 353 K. The experimental results showed that COP and SCP increased with the increase in the evaporation temperature. When the evaporation temperature was 298 K, the level of COP was 0.172, and the level of SCP was 136.9 W/kg. The COP and SCP of the system were tested at different adsorption temperatures (293 K/298 K/303 K); the evaporation temperature was 288 K, the condensation temperature was 308 K, and the desorption temperature was 353 K. The experimental results showed that the levels of COP and SCP decreased with the increase in the adsorption temperature. When the adsorption temperature was 293 K, the level of COP was 0.18, and the level of SCP was 142.4 W/kg.
研究领域:
材料科学
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热力学工程
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吸附技术
✓ 已验证
DOI
高影响因子
Polymers
·
2018
·Vol. 10
·期 7
·750
·
IF 2.935
Nan Wang,Li-Ye Yang,Yang-guang Wang,Xiao-kun Ouyang
In this work, a tetraethylenepentamine (TEPA)-grafted metal-organic framework material (MIL-101) was synthesized. The introduction of TEPA increased the abundance of functional groups on the MIL-101. As a powdery adsorbent, MIL-101-TEPA can be difficult to separate. In order to solve this problem, we combined MIL-101-TEPA with sodium alginate (SA) and injected the mixture into a CaCl2solution to solidify the powder into beads with a particle size of 3 mm. The easily recovered adsorbent was applied to the adsorption of Pb(II) from water. The structure and characterization of the adsorbent were investigated through scanning electron microscope (SEM), Fourier-transform infrared spectroscopy (FTIR), X-Ray diffraction (XRD), thermogravimetric analysis (TGA), and X-ray photoelectron spectroscopy (XPS). We also optimized the adsorption conditions. The results of the study showed that the adsorption process was chemisorptive and endothermic in nature. The maximum adsorption capacity of the composite beads was 558.6 mg/g. Meanwhile MIL-101-TEPA@CA showed good repeatable utilization.Keywords:sodium alginate;functional MIL-101;composite beads;adsorption;Pb(II)
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NANO
·
2018
·
IF 1.1
Shipeng Yang,Siwei Peng,Chunhui Zhang,Xuwen He,Yaqi Cai
Nanoparticles of the semiconductor catalyst Cd x Zn 1 − x S were embedded into the metal organic framework MIL-101(Cr) to obtain Cd x Zn 1 − x S@MIL-101(Cr) nanocomposites. These materials not only possess high surface areas and mesopores but also show good utilization of light energy. The ultraviolet-visible diffuse reflectance patterns of Cd x Zn 1 − x S@MIL-101(Cr) nanocomposites showed that Cd 0 . 8 Zn 0 . 2 S@MIL-101(Cr) possessed good visible light response ability among the synthesized nanocomposites. The photocatalytic performance of the Cd x Zn 1 − x S@MIL-101(Cr) nanocomposites were tested via degradation and mineralization of methylene blue in neutral water solution under light irradiation using a 300W xenon lamp. As a result, using Cd 0 . 8 Zn 0 . 2 S@MIL-101(Cr) as a catalyst, 99.2% of methylene blue was mineralized within 30 min. Due to the synergistic effect of adsorption by the MIL-101(Cr) component and photocatalytic degradation provided by the Cd 0 . 8 Zn 0 . 2 S component, the Cd 0 . 8 Zn 0 . 2 S@MIL-101(Cr) catalyst displayed superior photocatalytic performance relative to Cd 0 . 8 Zn 0 . 2 S and MIL-101(Cr). Furthermore, Cd 0 . 8 Zn 0 . 2 S@MIL-101(Cr) possessed excellent stability during photodegradation and exhibited good reusability. The remarkable photocatalytic performance of Cd 0 . 8 Zn 0 . 2 S@MIL-101(Cr) is likely due to the effective transfer of electrons and holes at the heterojunction interfaces.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2023
·
IF 5.9
Dongmei Jia,Yuejin Li,Huamin Cai,Yongzheng Duan,Jing Li,Chen Ling
Capture of heavy metal ions from aqueous solutions is a critical but challenging step in environmental treatment. In this work, NH2-MIL-101(Fe) nanoparticles were synthesized by simple solvothermal methods and applied to capture Cr(VI) anions from aqueous solutions. The results revealed that NH2-MIL-101(Fe) exhibited a high capture capacity (375.2 mg g–1) and an ultrafast capture rate (4 min reaching equilibrium). The competitive effects of coexisting ions such as Cl–, HCO3–, PO43–, Cd2+, Ca2+, and Cu2+ on Cr(VI) are very weak, suggesting that the adsorption selectivity significantly enhanced by loading amino groups on MIL-101(Fe). Density functional theory (DFT) calculation was performed to better understand the adsorption mechanism of Cr(VI), showing that the amino groups could increase the adsorption energy of Cr(VI) for enhancing the adsorption capacity. Based on powder X-ray diffraction, X-ray photoelectron spectroscopy, and DFT calculations, the Cr(VI) capture mechanism by NH2-MIL-101(Fe) nanoparticles was a combination of coordination between Fe and Cr(VI), electrostatic interaction between Cr2O72– and the protonated amino group, and reduction of Cr(VI) to Cr(III).
研究领域:
环境科学
·
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of the Iranian Chemical Society
·
2020
·Vol. 18
·期 1
·159-166
·
IF 1.552
Xu Wenjing,Ye Liuqing,Li Wei,Zhang Zhanying
MIL-101(Cr) morphology was modulated by addition of sodium stearate (SS) and cetyltrimethylammonium bromide (CTAB) in the precursor solution. The resulting SS modulation MIL-101(Cr) (SS@MIL-0.1 and SS@MIL-0.2) are quasi-spherical, and the CTAB modulation MIL-101(Cr) (CTAB@MIL-0.2) has a regular octahedral shape, similar to the pure MIL-101(Cr). Their particles after modification are reduced, and the structures of MIL-101(Cr) crystals are not destroyed. These modifications improve their adsorption capacity for methyl orange (MO). The maximum adsorption capacity of MO on the CTAB@MIL-0.2 and SS@MIL-0.2 can reach 645.2 and 454.5 mg g −1 , respectively, superior to many adsorbents reported in the literatures. The CTAB@MIL-0.2 and SS@MIL-0.2 exhibit outstanding selective adsorption of MO from the mixed solution of MO and methylene blue (MB). Our work may provide a feasible method to obtain MIL-101(Cr) with different morphologies, especially quasi-spherical, and open up a new doorway for utilizing MIL-101(Cr).
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2015
·
IF 3.368
Shutao Gao,Tao Feng,Cheng Feng,Ningzhao Shang,Chun Wang
In this paper, a novel visible-light responsive photocatalyst of Ag/AgCl@MIL-101 was synthesized via vapor diffusion-photoreduction strategy. The as-prepared composite material was characterized using X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectroscopy, transmission electron microscopy, ultraviolet–visible diffuse reflection spectra and X-ray photoelectron spectroscopy. Due to the synergistic effect between Ag/AgCl and MIL-101, the composite photocatalyst exhibited an enhanced and stable photoactivity for the degradation of Rhodamine B under visible light irradiation. The relationship between the photocatalytic activity and the structure of Ag/AgCl@MIL-101 hybrid material was discussed and the possible reaction mechanism was proposed.
研究领域:
材料化学
·
环境催化
·
纳米材料
·
光催化
·
多孔框架材料
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）