RSC Advances
·
2018
·Vol. 8
·期 49
·27623-27630
·
IF 2.936
Xiaoli Huang,Qi Hu,Lei Gao,Qirui Hao,Peng Wang,Dongli Qin
A metal–organic framework, MIL-101(Cr), was used to adsorb sulfamethoxazole (SMZ) in water and activated persulfate (PS) oxidation was investigated to regenerate SMZ-saturated MIL-101(Cr). Adsorption and oxidation were combined in this study. MIL-101(Cr) was characterized by SEM, BET, XPS and FT-IR analyses. Effects of various operating parameters on adsorption efficiency were studied. The dosages of persulfate for SMZ desorption and oxidation were investigated. The results showed that the recommended pH was 6–8 for SMZ adsorption and optimum MIL-101(Cr) dosage was 0.1 g L−1. SMZ adsorption by MIL-101(Cr) was a spontaneous process and nearly exothermic. Saturation adsorption capacity was achieved in 180 s and the adsorption followed the pseudo-second-order model. The maximum adsorption amount of MIL-101(Cr) to SMZ was 181.82 mg g−1 (Langmuir). MIL-101(Cr) also showed good adsorption capacities for sulfachloropyridazine (SCP), sulfamonomethoxine (SMM), and sulfadimethoxine (SDM). Persulfate was helpful for SMZ desorption from the surface of saturated MIL-101(Cr) and sufficient persulfate could simultaneously oxidize the SMZ. XPS analysis showed that the structure of MIL-101(Cr) was stable after the persulfate oxidation process. Regenerated MIL-101(Cr) had the same level of adsorption capacity as fresh MIL-101(Cr). An adsorption–oxidation combined process may be set up based on the results. This study provides basic data for the deep treatment of organic micropollutants in urban water bodies.
研究领域:
环境科学
·
水处理工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
·
2025
·Vol. 131
·期 6
·1-12
·
IF 2.8
Cai Hongxin,Yu Hang,Liu Yuanyuan,Yan Lingling,Chen Liang,Hu Qiang,Wang Lingli,Li Bin
A series of FeCl 3 doped MIL-101(Cr)/silicon nanoporous pillar array (FeCl 3 /MIL-101(Cr)/Si-NPA) humidity sensors were prepared by growing FeCl 3 doped MIL-101(Cr) on Si-NPA via a facile spin-coating method. Systematically evaluation of capacitive sensing performance demonstrated that FeCl 3 incorporation significantly enhanced humidity sensitivity. This improvement can be attributed to the increased hydrophilicity of the MIL-101(Cr)/Si-NPA composite membranes induced by FeCl 3 , as confirmed by the water contact angle test results. Notably, the 8 wt.% FeCl 3 /MIL-101(Cr)/Si-NPA humidity sensor exhibited the best comprehensive sensing properties, with excellent linearity (R 2 = 0.991) in the 11–75% relative humidity (RH) range. The capacitance of the humidity sensor increased by nearly three orders of magnitude from 11% RH to 75% RH at 300 Hz. Additionally, the humidity sensor displayed fast response (46 s) and recovery (6 s) times, as well as excellent reproducibility. The sensing mechanism was explored through the analysis of complex impedance curves. These finding indicate that the 8 wt.% FeCl 3 /MIL-101(Cr)/Si-NPA sensor holds considerable promise for humidity sensing applications.
研究领域:
材料科学
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
Desalination and Water Treatment
·
2024
·
IF 1
Shanshan Chen,Kang Wen,Xiaoting Zhang,Ruize Zhang,Runping Han
Metal organic frameworks are attracting scientific interest in adsorption applications owing to their large surface area and controllable pore size or shape over both microporous and mesoporous domains. Based on this, an iron(III) trimesic acid MIL-100(Fe) was facilely synthesized by hydrothermal treatment and used as adsorbent to remove neutral red (NR) from aqueous solution. MIL-100(Fe) was characterized using X-ray diffraction, scanning electron microscopy and transform infrared spectroscopy. MIL-100(Fe) was studied in view of the adsorption isotherms, thermodynamics, kinetics, and regeneration of the adsorbent. The adsorption kinetics data of NR were found to be in agreement with pseudo-second-order model. Temkin model was observed to be more suitable than Freundlich and Langmuir models in describing the adsorption isotherm. The maximum adsorption quantity was 333 mg g –1 at 313 K from Langmuir model. Thermodynamic parameters indicated that the NR adsorption process was endothermic and spontaneous. The NR-loaded MIL-100(Fe) adsorbent was regenerated and reused using pH = 2, 75% ethanol. A single-stage batch design for NR adsorption onto MIL-100(Fe) was also presented based on Temkin isotherm model equation. Based on the findings, MIL-100(Fe) is a promising adsorbent for the removal of cationic dyes from solution and thus can be used in practical application.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Manquan Fang,Guanghui Zhang,Yuting Liu,Renjin Xiong,Wenqing Wu,Feilong Yang,Lang Liu,Jinxun Chen,Jiding Li
Membrane gas separation offers high energy efficiency, easy operation, and reduced environmental impacts for vast hydrocarbon recovery in the petrochemical industry. However, the recovery of real light hydrocarbon mixtures (e.g., olefin/nitrogen) remains challenging for lack of high-performance membranes with sufficient reverse selectivity (large molecules permeate faster) and permeability. Here, we report the incorporation of fine-tuned, giant-pore featured MIL-101 nanocrystals into rubbery polymers to fabricate hybrid membranes, which successfully exploited the giant-pore channels and large sorption volume of the MIL-101 pore system. The synthesized MIL-101/poly(dimethylsiloxane) (PDMS) hybrid membranes demonstrated remarkably simultaneous improvement of gas permeance and separation factor for the model gas mixture propylene/nitrogen. Compared with the pristine PDMS, the propylene permeance and separation factor could be improved by more than 50% by adjusting MIL-101 loading and operating conditions. By consulting molecular simulations and gas sorption analysis, we verified that the giant-pore system of MIL-101 and the elastic PDMS chains exhibited a synergistic effect on improving both hydrocarbon solution and diffusion. Pore properties of MIL-101 contributed favorably to accelerated propylene diffusion in MIL-101 that is 236% faster than that in PDMS. In the meantime, MIL-101 reinforced the hydrocarbon solution additionally to PDMS, which further facilitated hydrocarbon transport.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2024
·
IF 5.7
Shizhen Song,Tengfei Zheng,Bo Li,Hangcheng Yang,Qin-Xiang Jia,Zhuting Hao,Wen Zhang,Ying Zhang
Solvent vapor-driven soft actuators have been seen as promising devices for human-environment interaction and gained considerable attention in recent years. Considering the limited types of response solvent and the lack of quantification, MOF/polymer intelligent soft actuators may be a potential candidate of the fabrication of the bio solvent-driven actuators. Thus, this paper present a multiple solvent-driven soft actuator based on MIL-88B/PVDF asymmetric film, and also the comparison to the analogs based on other MIL-88(Fe) series flexible MOFs (including MIL-88A, 88C and 88D) was made for the deformation-structure relationship and the solvent-driven mechanism investigation. The deformation behavior to various organic solvent (including methanol, toluene and chloroform) of the MIL-88(Fe)/PVDF composite films have been investigated, and the structure and composition of the MIL88(Fe) fillers and the composite films were also characterized by SEM, FT-IR, and XRD. Based on the above results, the MIL-88B/PVDF composite which shows the diversity of response objects and the fast deformation response to most of the organic solvents through the solvent swelling/adsorption of the MOF skeleton, was used to fabricate a monolayer soft film composed by MIL-88B, carbon black (CB) and PVDF, namely MIL-88B/CB/PVDF. The MIL-88B/CB/PVDF film not only realizes the excellent deformation-discolor dual-responsive to methanol atmosphere with the visible deformation which could being quickly achieved within 1s under 10 vol % methanol atmosphere and the maximum crimp angle being up to 558o within about 50 s, and also a wide color change range including six view angle-dependent high saturation color (red, orange, yellow, green, blue and purple), but also shows an approximate linear relationship to three of the organic solvents (methanol, toluene and chloroform) between the maximum curl angle and the solvent concentration. Furthermore, several smart devices have also been fabricated, including the methanol-driven bionic petals, worm robot, alertor and LIG sensor. Therefore, such soft composites of flexible MOF and polymer have great potential in bio-robot and this work may provide new design strategy for the MOFs/polymer smart materials.
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
·
2017
·Vol. 7
·期 10
·5621-5627
·
IF 3.108
Shan Huang,Kai-Li Yang,Xiao-Fang Liu,Hu Pan,Heng Zhang,Song Yang
MIL-100(Fe) was used for the first time in the catalytic transformation of hexose sugars into lactic acid (LA). The as-synthesized MIL-100(Fe) was systematically characterized, and its superior morphological and textural properties were demonstrated to contribute greatly to the pronounced catalytic performance in fructose-to-LA conversion (up to 32% yield), as compared with other catalysts like Cu-BTC and MIL-100(Cr). The effects of reaction conditions including temperature, reaction time, and substrate loading were explored. In addition, MIL-100(Fe) could be easily reused for 4 cycles with no evident decrease in catalytic activity.
研究领域:
化学工程
·
催化
·
生物化学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Jun-Qing Ye,Bin Cheng,Yunfei Bu,Jun-Feng Qian,Qian Liang,Ming-Yang He,Qun Chen
The development of high-efficiency photocatalysts for water splitting to hydrogen (H 2 ) is crucial for alleviating energy crisis and environmental problems. In this study, a novel type-II ternary heterojunction photocatalyst, CDs/NH 2 -MIL-125 (Ti)/Cu 2 O, was fabricated through the integration of NH 2 -MIL-125 (Ti) with Cu 2 O and carbon dots (CDs), exhibited excellent photocatalytic H 2 production rate of 12817.1 μmol/g/h with apparent quantum efficiency (AQE) of 17.13 % under visible light irradiation. Characterization revealed a uniform and dense structural integration with a high Brunauer-Emmett-Teller (BET) surface area of 275.9 m 2 g −1 and a suitable energy band gap of 2.18 eV. Furthermore, the heterostructures promoted efficient photo-generated carrier separation and enhanced reduction capabilities . Notably, CDs, serving as cocatalysts or electron acceptors, improved visible light utilization and electron migration, significantly boosting H 2 production. Insights from electron spin resonance (ESR) and density functional theory (DFT) calculations supported the migration mechanisms of electrons. This work presents a significant advance in photocatalytic technology for sustainable energy by designing high-performance CDs-modified heterojunction photocatalysts.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS CHEMISTRY
·
2012
·Vol. 22
·期 34
·17833-17841
·
IF 5.968
Cheng-Xiong Yang,Xiu-Ping Yan
The adsorption and extraction of fullerenes on the metal–organic framework MIL-101(Cr) were studied in detail in terms of kinetics, thermodynamics, adsorption isotherms, competitive adsorption, and breakthrough curves. The adsorption of C60 and C70 on MIL-101(Cr) follows a pseudo-second-order kinetic model. The adsorption rate constant for C70 is 3 to 5 times that for C60, showing faster and easier adsorption of C70 over C60 on MIL-101(Cr). Intraparticle diffusion model analysis reveals that the adsorption of C60 and C70 on MIL-101(Cr) proceeds by two phases, surface sorption and intraparticle/pore diffusion. The adsorption of fullerenes on MIL-101(Cr) is controlled by entropy changes. The maximum adsorption capacity for C70 at 30 °C (198.4 mg g−1) is 29 times that for C60 (6.76 mg g−1). MIL-101(Cr) shows much more favorable adsorption of C70 and higher fullerenes than C60 with a high selectivity (αC70/C60 = 24). Selective extraction of C70 and higher fullerenes from crude carbon soot can be easily achieved on MIL-101(Cr) via a simple adsorption–desorption process. The used MIL-101(Cr) can be regenerated by washing with o-dichlorobenzene under ultrasonication. The high selectivity, fast adsorption, easy desorption, and excellent reusability makes MIL-101(Cr) attractive as a novel adsorbent for the enrichment and extraction of C70 and higher fullerenes.
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
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Yumeng Zhao,Guoshu Gao,Peng Zhu,Cun Liu,Xiongfu Zhang,Feichao Wu,Guohui Yang
Metal-organic framework (MOF) membranes hold great potential for acetic acid dehydration by pervaporation. However, it remains challenging to develop stable MOF membranes suitable for this application due to the corrosion of membranes by acetic acid. Herein, we report a robust aluminum (Al)-based MIL-96 membrane on porous ceramic tubes for acetic acid pervaporation dehydration. It is prepared by an induction strategy with Al-Sol@MIL-96-C layer, obtained by calcining an Al-based sol layer containing small MIL-96 seeds. The induced layer possesses a sponge-like structure and high reactivity, favoring the uniform growth of MIL-96 crystals and establishing a strong connection between the membrane layer and the support. The achieved MIL-96 membrane, with a thickness of ∼2 μm, exhibits excellent performance in separating 90 wt% acetic acid/water mixtures by pervaporation, showing a high separation factor of ∼3000 with a permeation flux of 1.54 kg/(m 2 ·h). Notably, due to the connectivity of the Al-Sol@MIL-96-C layer, these membranes show long-term operational stability for over 200 h, as well as great tolerance to ultrasonic treatment, highlighting the enormous potential for applications. This work provides a feasible approach to fabricate robust MOF membranes for pervaporation separation of acetic acid/water mixtures.
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
Journal of Inorganic and Organometallic Polymers and Materials
·
2025
·
IF 4.9
Yu Qinyuan,Li Jiahui,Wang Yufen,Wei Xuedong
Transition metal sulfides (TMS) have drawn increasing research interest owing to their unique electronic structure. They hold broad prospects in accelerating the sluggish oxygen evolution reaction (OER) during water electrolysis. Metal-organic frameworks (MOFs) feature controllable electronic structures and specific surface areas, which facilitate the adsorption of reactants and expedite interfacial electron transfer. Leveraging the above-mentioned advantages of the two materials, a kind of composite electrocatalyst, CuCo 2 S 4 @MIL-53(Fe)/NF, was synthesized by growing MIL-53(Fe) in-situ onto CuCo 2 S 4 nanowires supported on nickel foam. This composite electrocatalyst can accelerate charge transfer, significantly increase the number of active sites, and enhance both electrocatalytic activity and stability. The electrocatalyst CuCo 2 S 4 @MIL-53(Fe)/NF can drive the OER with an overpotential of 390 mV at a current density of 100 mA·cm −2 . Moreover, it still demonstrates excellent catalytic activity after 75 h of testing. This study not only broadens the avenues for sulfide composites but also provides an experimental basis and support for the direct combination of metal chalcogenides and Fe-based MOFs as electrocatalysts.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Xin-Ru Chen,Heng Mao,Qiu-Ying Zhang,Wei-Min Liu,Shen-Hui Li,Qian-Qian Li,Li-Hao Xu,Yan-Mei Zhang,Xin-Yue Zhang,Jun-Jie Liu,Ao Kou,Zhi-Ping Zhao
Interfacial engineering in mixed matrix membranes (MMMs) is essential to attain superior separation performance and ensure long-term operational stability. In this research, a range of novel MMMs were designed and fabricated for pervaporation (PV) separation of n-butanol/water solution by introducing the MIL-53(Al) particles and three variants (i.e., MIL-53(Al)–NH 2 , MIL-53(Al)–NO 2 , MIL-53(Al)–OH) into PEBA polymer matrix. These four MIL-53(Al) counterparts were synthesized via a microwave-assisted solvothermal method by selectively functionalizing the terephthalic acid linkers with different chemical groups. The functional MIL-53(Al) variants were employed to explore the relationship between membrane microstructures and PV performance by manipulating the interfacial interactions with PEBA matrix. The findings reveal that incorporating MIL-53(Al) variants not only displayed excellent interfacial compatibility and uniform dispersion within PEBA matrix, but also constructed the preferential transport pathways for n-butanol over water molecules. Impressively, in a 1 wt% n-butanol aqueous solution at 40 °C, the resultant membrane attained a permeation flux of 1483.3 g·m -2 ·h -1 and a separation factor of 18.1. Compared to the PEBA/PVDF membrane, the total flux was enhanced by 17.1 %, and the separation factor was improved by 46.4 %. Moreover, the embedding MIL-53(Al) variants boosted thermal and mechanical properties of the membrane, endowing it with considerable potential for practical applications.
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
Carbon Energy
·
2025
·
IF 24.2
Ze Liu,Kaiyong Feng,Fengjun Deng,Xiaochen Zhang,Jiangchang Chen,Yingjian Yu
Silicon–air (Si–air) batteries have received significant attention owing to their high theoretical energy density and safety profile. However, the actual energy density of the Si–air battery remains significantly lower than the theoretical value, primarily due to corrosion issues and passivation. This study used various metal–organic framework (MOF) materials, such as MIL-53(Al), MIL-88(Fe), and MIL-101(Cr), to modify Si anodes. The MOFs were fabricated to have different morphologies, particle sizes, and pore sizes by altering their central metal nodes and ligands. This approach aimed to modulate the adsorption behavior of H 2 O, SiO 2 , and OH − , thereby mitigating corrosion and passivation reactions. Under a constant current of 150 μA, Si–air batteries with MIL-53(Al)@Si, MIL-88(Fe)@Si, and MIL-101(Cr)@Si as anodes demonstrated lifetimes of 293, 412, and 336 h, respectively, surpassing the 276 h observed with pristine silicon anodes. Among these composite anodes, MIL-88(Fe)@Si displayed the best performance due to its superior hydrophobicity and optimal pore size, which enhance OH − migration. This study offers a promising strategy for enhancing Si–air battery performance by developing an anodic protective layer with selective screening properties.
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
危险品化学品经营许可证（带存储）