INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2020
·
IF 3.573
Chaofeng Zhang,Yaozong Yang,Linfeng Li,Jiandong Zhang,Shuangping Huang,Ruifeng Li
Polyoxymethylene dimethyl ether (PODEn) is a promising ether fuel. Especially PODE3–5 can be directly mixed into diesel without modification of the diesel engine’s infrastructure for improving thermal efficiency, and significant reduction in particulate matter (PM) and nitrogen oxides (NOx) emissions. In this paper, a series of heterogeneous catalysts, the imidazole sulfonate ionic liquids (ILs) encapsulated in the cages of metal–organic frameworks (MOFs) MIL-100(Fe), were used successfully and efficiently in the synthesis of polyoxymethylene dimethyl ethers (PODEn) from methanol and trioxane (TOX). These catalysts have exhibited excellent catalytic properties because of strong Brønsted acid sites. MIL-100(Fe)@[BSO3HIm][CF3SO3] shows the best catalytic activity with 96.98% conversation of TOX and 47.49% selectivity of the desired product PODE3–5 under a mild reaction condition. Of importance is that the catalyst is recovered easily and reused.
研究领域:
化学工程
·
催化材料
·
绿色化学
✓ 已验证
产品关联
DOI
高影响因子
INDOOR AND BUILT ENVIRONMENT
·
2025
·
IF 2.9
Pengfei Zhang,Wenjian Han,Bo Zhou,Haiqian Zhao
The metal-organic framework MIL-100(Fe) is a novel humidity-regulating material, but it has poor water vapour desorption performance. To address this issue, MIL-100(Fe) was modified using 20% lithium chloride (LiCl), forming stable coordination bonds through ion-dipole interactions. These bonds attract water molecules, enhancing the adsorption capacity and improving the structural stability of the material. After modification, its moisture capacity was increased by 2.42 times, and the desorption amount was increased by 7.22 times, with an overall improvement in moisture adsorption–desorption equilibrium. However, the use of inorganic salts presents a leakage problem in high-humidity environments. To counter this, a 3% ethyl cellulose (EC) coating was applied to the modified MIL-100(Fe). Through surface interactions, this modification improved the material's adsorption performance in non-polar environments, preventing deliquescence in long-term high-humidity conditions. The hydrophobic angle of the modified composite material reached 93°, making the surface hydrophobic. The moisture capacity of the composite material was 1.83 times that of the pure MOF, and the desorption amount was increased by 5.2 times, significantly enhancing the material's environmental humidity regulation performance. Additionally, the material demonstrated good reusability, extending its lifespan, making it suitable for use as an intelligent humidity control material in construction.
研究领域:
材料科学
·
环境功能材料
·
纳米多孔材料
·
建筑节能
·
智能响应材料
✓ 已验证
DOI
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2020
·
IF 4.551
Yanshu Luo,Bingqiong Tan,Xianghui Liang,Shuangfeng Wang,Xuenong Gao,Zhengguo Zhang,Yutang Fang
Metal organic frameworks (MOFs) MIL-100(Fe) is considered to be a promising porous adsorbent for dehumidification due to its good hydrophilicity and hydrothermal stability. However, the powdery MIL-100(Fe) prepared by the conventional hydrothermal method is not suitable for industrial rotary desiccant dehumidifier. In order to produce a high-performance rotor core component, a new dry gel conversion in situ synthesis strategy for glass-fiber MIL-100(Fe) monolithic adsorbent was proposed in this paper. The effects of the reaction sol concentration on the crystalline phase, morphology, pore structure , adsorption/desorption performance and the cycling stability of the monolith were discussed in detail. The results showed that MIL-100(Fe) crystals which evenly dispersed in the surface and voids of glass fiber, could be conveniently synthesized in the reaction sols with molar ratios of 1Fe (III)/0.67BTC/xH 2 O (x = 93–185). Among them, the MIL-100(Fe) monolith obtained at x = 93 exhibited a high loading (85.7%), large BET specific surface area (1441 m 2 /g), S-shaped water vapor adsorption isotherm and high saturated adsorption ratio (0.496 g/g) at 298 K and 60% RH , low desorption activation energy (48.28 kJ/mol) as well as a reliable cycling stability. Favorable adsorption/desorption performance of MIL-100(Fe) monolith and convenient dry gel preparation process provide a guidance for the manufacture of high-performance dehumidification rotary wheel.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 43
·37110-37117
·
IF 3.289
Mingjuan Han,Zheng Gu,Chong Chen,Zuowang Wu,Yigen Que,Qiang Wang,Hui Wan,Guofeng Guan
A new, simple and effective strategy to confine dicationic acid ionic liquids (DAILs, 1,4-bis[3-(propyl-3-sulfonate) imidazolium] butane hydrogen sulfate) in the cages of MIL-100(Fe) frameworks was constructed. The target catalyst, defined as MIL-100(Fe)@DAILs, was characterized by XRD, FTIR, SEM, TEM, EA, TGA and N2 adsorption–desorption. Meanwhile, the catalytic activity of the MIL-100(Fe)@DAILs catalyst was evaluated by the esterification reaction with oleic acid and methanol. The results indicated that the DAILs had been effectively encapsulated within the cages of the MIL-100(Fe) frameworks. Moreover, the influence of reaction time, reaction temperature, molar ratio of methanol to oleic acid and catalyst dosage on the conversion of oleic acid was studied by univariate analysis. The conversion of oleic acid decreased from 93.5% to 86.0% when the catalyst was reused five times, which indicated that the target catalyst possessed higher catalytic activity and superior catalytic activity. Finally, an esterification mechanism catalyzed by this novel catalyst was illustrated.
研究领域:
化学工程
·
催化材料
·
可再生能源
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2022
·
IF 9.224
Jiabi Xu,Jiayi Peng,Xiangting Wang,Xiaohong Hou
Nanozymes have gradually become a research hotspot in the field of enzymology, benefiting from their low cost, high stability, and availability. To break through the limitation that conventional nanozymes exert peroxidase-like (POD-like) activity under only acidic conditions, we rationally designed Fe3O4@MIL-100(Fe) with excellent superparamagnetism and catalytic activity. An optimization of the microwave-assisted in situ synthesis conditions was carried out to obtain the highest POD-like activity of the nanozyme under nearly neutral conditions. Adenosine triphosphate (ATP) was appointed as an auxiliary regulator to further amplify the activity of the nanozyme Fe3O4@MIL-100(Fe). A series of behaviors related to enzymology and the mechanism of ATP-assisted enhancement were further explored. Consequently, a colorimetric sensing strategy was proposed for the one-step detection of cholesterol with a linear range of 0.05–0.4 mM and a limit of detection (LOD) of 1.3 μM (3.3 δ/S). The result of the present work implied that the established one-step platform could be successfully applied to the detection of cholesterol in actual samples. From the nanozyme synthesis to the colorimetric sensing process, the concepts of time savings and straightforwardness were always upheld and satisfactorily implemented. Most importantly, Fe3O4@MIL-100(Fe) could be a great potential biocatalyst candidate for the development of the corresponding commercial kits.
研究领域:
生物化学
·
医学诊断
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2012
·
IF 4.531
Yan-Yan Fu,Cheng-Xiong Yang,Xiu-Ping Yan
Metal-organic framework MIL-100(Fe) was explored as a novel stationary phase for both normal-phase and reverse-phase high performance liquid chromatography. Two groups of analytes (benzene, toluene, ethylbenzene, naphthalene and 1-chloronaphthalene; aniline, acetanilide, 2-nitroaniline and 1-naphthylamine) were used to test the separation performance of MIL-100(Fe) in the reverse-phase mode, while the isomers of chloroaniline or toluidine were employed to evaluate its performance in the normal-phase mode. The MIL-100(Fe) packed column gave a baseline separation of all the tested analytes with good precision. The separation was controlled by negative enthalpy change and entropy change in the reverse-phase mode, but positive enthalpy change and entropy change in the normal-phase mode. The relative standard deviations of retention time, peak area, peak height, and half peak width for eleven replicate separations of the tested analytes were 0.2–0.7%, 0.5–3.6%, 0.6–2.3% and 0.8–1.7%, respectively. The mesoporous cages, accessible windows, excellent chemical and solvent stability, metal active sites and aromatic pore walls make MIL-100(Fe) a good candidate as a novel stationary phase for both normal-phase and reverse-phase high performance liquid chromatography.
研究领域:
分析化学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Bo Xue,Chuanruo Yang,Pengtao Guo,Ting Wang,Gan Li,Dahuan Liu
The low efficiency of photogenerated carriers separation and slow cycling of Fe 2+ /Fe 3+ in Fe-based metal–organic frameworks (MOFs) have limited the improvement of their photo-Fenton activity. Therefore, in this work, MIL-100/BiOBr heterogeneous photo-Fenton catalyst was constructed by compositing MIL-100 with BiOBr nanosheets through a simple solvent evaporation method. In this system, the type II heterojunctions formed by the close contact of MIL-100 and BiOBr can promote the separation of photogenerated carriers and accelerate the redox cyclic of Fe 2+ /Fe 3+ , thereby significantly enhancing the photo-Fenton activity. Under visible light irradiation for 60 min, the best removal rate of tetracycline hydrochloride (TCH) by MIL-100/BiOBr is 94.3 %. Remarkably, the MIL-100/BiOBr exhibits a nearly fourfold increase in degradation rate constant compared to MIL-100 at photo-Fenton system. In addition, the catalysts can maintain high degradation performance over a wide pH range (3–9) and the co-existence of different anions. An in-depth investigation of the degradation mechanism reveals that superoxide radicals ( · O 2 – ) and hydroxyl radicals (·OH) play major roles in the photo-Fenton system. Based on this, the possible degradation pathways were proposed. Therefore, this study provides a new strategy for Fe-based MOFs to remove emerging pollutants from wastewater by photo-Fenton reaction.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2022
·
IF 14.224
Rongsheng Ning,Heliang Pang,Zhongsen Yan,Zhenyu Lu,Qiankun Wang,Zengling Wu,Wenxin Dai,Lingshan Liu,Zhongsheng Li,Gongduan Fan,Xianzhi Fu
The development of high efficient photocatalysts for antibiotics contamination in water remains a severe challenge. In this study, a novel step-scheme (S-scheme) photocatalytic heterojunction nanocomposites were fabricated from integrating AgCl nanoparticles on the MIL-100(Fe) octahedron surface through facile multi-stage stirring strategy. The S-scheme heterojunction structure in AgCl/MIL-100(Fe) (AM) nanocomposite provided a more rational utilization of electrons (e - ) and holes (h + ), accelerated the carrier transport at the junction interface, and enhanced the overall photocatalytic performance of nanomaterials . The visible-light-driven photocatalysts were used to degrade sulfamethazine (SMZ) which attained a high removal efficiency (99.9%). The reaction mechanisms of SMZ degradation in the AM photocatalytic system were explored by electron spin resonance (ESR) and active species capture experiments, which superoxide radical (•O 2 - ), hydroxyl radical (•OH), and h + performed as major roles. More importantly, the SMZ degradation pathway and toxicity assessment were proposed. There were four main pathways of SMZ degradation, including the processes of oxidation , hydroxylation, denitrification, and desulfonation. The toxicity of the final products in each pathway was lower than that of the parent according to the toxicity evaluation results. Therefore, this work might provide new insights into the environmentally-friendly photocatalytic processes of S-scheme AM nanocomposites for the efficient degradation of antibiotics pollutants.
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
Journal of Materials Chemistry A
·
2024
·Vol. 12
·期 21
·12712-12720
·
IF 10.7
Tianhao Yu,Peng Gao,Hong Du,Ling Dong
Metal–organic frameworks (MOFs) have recently been reported as promising catalysts for the oxygen evolution reaction (OER). Hence, we chose hydroxyl-rich 2,5-dihydroxyterephthalic acid as the ligand to prepare a novel MIL-100 and wrapped it on the NiCo-ZIF-67 surface to obtain an amorphous hollow material (NiCo-ZIF-67@Fe-MIL-100, denoted as NiCo-ZIF@MIL). The composite material presents a low overpotential (η ≈ 139 mV @ 10 mA cm−2), a small Tafel slope (119 mV dec−1) and great stability for the OER in 1 M KOH solution. Density Functional Theory (DFT) calculations show that the hydroxyl-rich structure, which accelerates OH− transfer and promotes the formation of the Co–O–Fe bridge, effectively reduces the reaction energy barrier (from 2.67 eV for NiCo-ZIF-67 to 2.08 eV for NiCo-ZIF@MIL). This work provides an important reference for the development of double-MOF materials.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 18
·8566-8577
·
IF 3.3
Tingting Tang,Bo Jin,Ping Zhao
Aromatic nitro compounds are the main components of explosives. They are not only explosive and dangerous but also have high toxicity and high stability in the human body, soil, and water resources, destroying the ecological environment. Herein, a simple hydrothermal method is used to successfully prepare layered MIL-100 (Fe). A series of aromatic nitro compounds including p-nitrophenol (PNP), nitrobenzene (NB), dinitrotoluene (2,4-DNT), dinitrophenol (2,4-DNP), and 2,4,6-trinitrophenol (2,4,6-TNP) were degraded by the photo-Fenton method. The MIL-100 (Fe) photo-Fenton agent can almost completely degrade PNP within 2 min. Similarly, it has a good degradation effect on other pollutants. Finally, the mechanism of the photo-Fenton reaction was discussed by product analysis and free radical capture experiments after the photochemical reaction. This study demonstrates the potential application value of MIL-100 (Fe) as a photo-Fenton reagent to degrade nitroaromatic explosives.
研究领域:
环境化学
·
材料科学
·
催化化学
·
环境污染与控制
·
应用化学
✓ 已验证
DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2022
·
IF 3.841
Chenyan Wu,Qianhong Shen,Suhua Zheng,Xinyu Zhang,Jiansong Sheng,Hui Yang
A novel Bi 2 Sn 2 O 7 @MIL-100(Fe) composite photocatalyst was fabricated by loading Bi 2 Sn 2 O 7 nanoparticles on the surface of mesoporous MIL-100(Fe). The structure-property relationships of such composite photocatalyst were studied. The results exhibit that the formed Bi 2 Sn 2 O 7 @MIL-100(Fe) heterojunction promote the separation of photo-generated carriers, leading to the enrichment of photo-generated electrons on MIL-100(Fe). Meanwhile, MIL-100(Fe) can provide more active sites for photocatalytic reaction due to its extraordinary specific surface area. Therefore, the Bi 2 Sn 2 O 7 @MIL-100(Fe) composite photocatalyst exhibits excellent superoxide-radical-dominated photocatalytic activity and is more propitious to degrading the contaminants such as ciprofloxacin, which can be efficiently degraded in the absence of superoxide radicals. The Bi 2 Sn 2 O 7 @MIL-100(Fe) composite reveals enhanced photocatalytic activity for degrading ciprofloxacin with rate constant (0.0143 min −1 ) 1.96 and 3.86 times higher than that of pure MIL-100(Fe) (0.0073 min −1 ) and pure Bi 2 Sn 2 O 7 (0.0037 min −1 ), respectively.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Nano Research
·
2017
·Vol. 11
·期 2
·1109-1123
·
IF 7.354
Liang Ruowen,Huang Renkun,Ying Shaoming,Wang Xuxu,Yan Guiyang,Wu Ling
A simple, facile in situ reduction approach is reported for the synthesis of Pd-nanoparticle-decorated phosphotungstic acid (PTA)-MIL-100(Fe) nanocomposites (Pd-H 3 PW 12 O 40 -MIL-100(Fe), denoted Pd-PTA-MIL-100(Fe)). During the in situ synthesis, PTA is encapsulated into the matrix of MIL-100(Fe) and serves as a UV-switchable reducing agent, resulting in highly dispersed Pd NPs. Using the photocatalytic degradation of pharmaceuticals and personal care products as model reactions, the ternary Pd-PTA-MIL-100(Fe) hybrids exhibited enhanced photocatalytic activity compared with their foundation matrices, the binary PTA-MIL-100(Fe) nanocomposite. Based on photoelectrochemical analyses, the improved photocatalytic performance can be attributed to the well-known electronic conductivity of the Pd NPs, the fast electron transport of PTA, the intense visible-light absorption of MIL-100(Fe), and the matched energy levels of the three components: MIL-100(Fe), PTA, and Pd NPs. Importantly, almost no Fe and W ions were leached from the samples during the reaction, demonstrating the photostability of the Pd-PTA-MIL-100(Fe) composite. In addition, possible photocatalytic reactions mechanisms have also been investigated.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）