JOURNAL OF NANOPARTICLE RESEARCH
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2013
·Vol. 15
·期 10
·1-6
·
IF 2.175
Zhang Ying,Chen Yu,Zhang Yupeng,Cong Huahua,Fu Bo,Wen Shanpeng,Ruan Shengping
A novel porous nanosized humidity-sensing material of amine-functionalized titanium metal organic framework (MOF), NH 2 -MIL-125(Ti), was investigated. NH 2 -MIL-125(Ti) nanoparticles with high phase purity and good physicochemical property were synthesized by a simple hydrothermal method. The nanosized MOF was characterized by X-ray diffraction and scanning electron microscope. The average size of the MOF nanoparticles is around 300 nm. Then NH 2 -MIL-125(Ti) humidity sensor was fabricated by coating the nanosized materials on interdigitated electrodes. The humidity sensor based on NH 2 -MIL-125(Ti) shows good linearity of RH (11–95 % RH), as well as fast response and recovery time. The RH detecting range is from 11 to 95 % RH at 100 Hz. The response and recovery time are about 45 and 50 s, respectively. Moreover, the sensing mechanism was discussed by complex impedance analysis in detail. These results indicate the potential application of NH 2 -MIL-125(Ti) in humidity sensors.
研究领域:
生物医学工程
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材料科学
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传感器技术
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纳米技术
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2018
·
IF 11.698
Munir Ahmad,Shuo Chen,Fei Ye,Xie Quan,Shahzad Afzal,Hongtao Yu,Xueyang Zhao
Metal-organic frameworks (MOFs) have received significant interest as a promising photocatalyst for environmental remediation due to its high surface area and porous nature. The small pores (<2 nm) in microporous MOFs help the adsorption of small molecules but limits diffusion and accessing of bigger molecules from MOF cavities, thus preventing their applications in some situation. The aim of this work is to fabricate mesoporous MOF composite with larger pore sizes (>2 nm) and open pore cavities that can provide right pathways for ingoing and outgoing of molecules during catalysis. Herein, we successfully report stable mesoporous MIL-100(Fe) loaded with ZnO NS by an in situ self-assembly method. The prepared samples were characterized by Brunauer–Emmett–Teller (BET) and N 2 adsorption-desorption isotherm to study their surface area and porosity. The catalytic performance of mesoporous MIL-100(Fe) was approximately 2–3 order of magnitude more than that of microporous MIL-100(Fe). Such higher catalytic activity in mesoporous MIL-100(Fe) can be ascribed to its mesocellular structure which can improve the molecular diffusion and accessibility inside MOF channels. The charge separation efficiency and photo-Fenton activity of mesoporous MIL-100(Fe) can further be increased by introduction of certain amount of ZnO NS and H 2 O 2 . Moreover, the as synthesized sample shows higher photo-Fenton degradation efficiency at lower pH value with certain amount of H 2 O 2 . Lastly, the possible catalytic mechanism has been tentatively proposed. This study not only used for the pollutants degradation but also provide useful platform for the application of mesoporous MOFs as an efficient photo-Fenton activity to various other fields.
研究领域:
环境科学
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材料科学
✓ 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
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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
·
有机合成
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2016
·
IF 8.328
Zhiwang Yang,Xueqing Xu,Xixi Liang,Cheng Lei,Yuhan Cui,Wenhua Wu,Yaoxia Yang,Zhe Zhang,Ziqiang Lei
Photocatalytic synthesis using visible light is a desirable chemical process because of its potential to utilize sunlight. A heterostructured MIL-125/Ag/g-C 3 N 4 nanocomposite was implemented as an efficient bifunctional visible-light response catalyst for the photoreduction of nitrocompounds and the oxidation of alcohols. The photocatalyst was prepared via an accessible method and characterized by XRD, SEM, TEM, XPS, FT-IR, N 2 adsorption–desorption isotherm, UV–vis DRS, PL and EIS. The reactive efficiency of the photocatalyst depends on two primary factors, one is the light adsorption of catalysts, Ag nanoparticles (NPs) were photodeposited on the surface of g-C 3 N 4 and MIL-125 to increase visible-light absorption via the surface plasmon resonance. And the other is the separation efficiency of the photogenerated charge carrier. As an electron-conduction bridge in the interface between MIL-125 and g-C 3 N 4 , Ag NPs could facilitate the direct migration of photoinduced electrons from g-C 3 N 4 to MIL-125 and retard the recombination of electron-holes. Therefore, the MIL-125/Ag/g-C 3 N 4 sample shows highest photocatalytic activity compared with MIL-125, g-C 3 N 4 , MIL-125/Ag and MIL-125/g-C 3 N 4 . A corresponding photocatalytic mechanism of these reactions was discussed in detail. Moreover, the photoreduction of nitrocompounds and oxidation of the alcohols with superior conversions and selectivities were obtained, and the catalyst can be recycled four times. It is concluded that MIL-125/Ag/g-C 3 N 4 would be a promising visible light photocatalyst in the field of selective organic transformations.
研究领域:
材料科学
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化学工程
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2019
·
IF 7.65
Sijia Li,Jianan Cui,Xia Wu,Xuan Zhang,Qi Hu,Xiaohong Hou
Metal-Organic Frameworks (MOFs) are efficient adsorbent and catalyst, however, the prepare of MOFs can be extremely time consuming. The rapid in situ microwave synthesis process offers the possibility of MOFs to a large-scale application. In this study, Fe 3 O 4 @MIL-100(Fe) was rapidly prepared via microwave in 30 min using Fe 3 O 4 as metal precursor and applied as the adsorbent and photocatalyst to remove diclofenac sodium (DCF) from water. Fe 3 O 4 @MIL-100(Fe) exhibited an excellent adsorption effect to DCF with the maximum adsorption capacities of 400 mg/L. The presence of H 2 O 2 could promote the removal of DCF during photocatalytic process. Approximately 99.4% of the DCF was removed in Fe 3 O 4 @MIL-100(Fe)/vis/H 2 O 2 system via adsorption removal and consequent photocatalytic degradation . The high efficiency was attributed to the large BET surface area (1244.62 m 2 /g) and abundant iron metal sites (Fe(III) and Fe(II)) of Fe 3 O 4 @MIL-100(Fe). The adsorptive, photocatalytic property of Fe 3 O 4 @MIL-100(Fe) and the Fenton-like reaction were the main mechanisms for DCF removal. TOC analyzer was served to assess the mineralization of solutions treated by Fe 3 O 4 @MIL-100(Fe)/vis/H 2 O 2 in 12 h. High elimination of TOC (87.8%) was observed during the DCF mineralization process. In addition, the major products were illuminated using HPLC-Q-TOF-MS and DCF degradation pathways were also proposed.
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
Materials Science and Engineering B-Advanced Functional Solid-State Materials
·
2024
·
IF 3.9
Kashif Nawaz Khattak,Maosen Zhang,Caixia Deng,Shuang Li,Ling Jiang,Pran Gopal Karmaker,Xiupei Yang
In this work, the hybrid material NH 2 -MIL-125(Ti)@TpPa-NO 2 was synthesized by grafting an amino-functionalized titanium-based metal–organic framework (NH 2 -MIL-125(Ti)) with 2,4,6-tri(4-pyridyl)-1,3,5-triazine-nitro (TpPa-NO 2 ) moieties. The resulting composite material exhibited remarkable removal efficiency owing to the synergistic effects derived from the combination of the NH 2 -MIL-125(Ti) and TpPa-NO 2 components. The material demonstrated excellent stability and recyclability, making it a promising candidate for the treatment of wastewater containing rhodamine-B (Rhd-B). Some characterization techniques were employed to elucidate the structural features and surface morphology of the hybrid material. The adsorption capacity of NH 2 -MIL-125(Ti)@TpPa-NO 2 for Rhd-B dye was evaluated, and the results revealed an exceptional removal efficiency of 99.96 % and a high adsorption capacity of 25.54 mg/g, highlighting the superior adsorption performance of the material. The adsorption process was found to follow Langmuir isotherm and pseudo-second-order kinetics, indicating that chemisorption is the predominant mechanism governing the uptake of Rhd-B dye onto NH 2 -MIL-125(Ti)@TpPa-NO 2 .
研究领域:
材料科学
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环境科学
✓ 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
·
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
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环境科学
✓ 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
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环境科学
✓ 已验证
DOI
高影响因子
ACS Applied Nano Materials
·
2024
·
IF 5.3
Baixin Liu,Xuelian Chen,Guojuan Hai,Wenwen Zhao,Kai Li,Zhicong Yuan,Xiaoyong Zhang
The design and synthesis of metal–organic frameworks (MOFs) for direct use as electrode materials are crucial for enhancing the electrocatalytic oxygen evolution reaction (OER). Herein, the ultrathin MIL-53(Fe) nanosheet arrays with enriched coordinatively unsaturated metal sites (denoted as MIL-53(Fe)/NF-B0.2-2) are obtained under the inhibition and modulation of benzoic acid (BA) ligands via a substitution-suppression process. The results confirm that this unique ultrathin structure effectively increases the electrochemical active surface areas (ECSA) and exposes the coordinatively unsaturated metal sites. More importantly, the enriched coordinatively unsaturated metal sites acting as active sites facilitate the adsorption of OH– during the OER process. Additionally, MIL-53(Fe)/NF-B0.2-2, with its optimized energy band structure, exhibits superior charge transfer ability and diffusion processes, significantly improving the reaction kinetics in alkaline electrolytes. As a result, the MIL-53(Fe)/NF-B0.2-2 electrode only requires extremely low overpotentials of 190 and 229 mV to reach current densities of 10 and 100 mA cm–2 for OER, respectively. This research not only proposes a novel strategy for designing efficient electrocatalysts but also provides insights into the structure–activity relationship, advancing the rational design of MOFs as effective electrode materials.
研究领域:
材料科学
·
电化学
·
能源催化
✓ 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）