Journal of the Taiwan Institute of Chemical Engineers
·
2021
·
IF 5.876
Lihua Qi,Hailin Jiang,Tianni Lin,Xinyu Chang,Bolong Jiang
Background The aim of this study was to develop a class of novel MIL-53(Al) based composite with high phenolic compound adsorption capacity to treat highly toxic phenolic wastewater. Method MIL-53(Al)@AC-x composites with different AC loading ( x ) were constructed by combining MIL-53(Al) with cheap biomass AC derived from cheap rice husk. The adsorbents were characterized by various methods. Significant findings The results showed that the surface area and pore volume of all MIL-53(Al)@AC-x composites increased remarkably, which are much higher than those of pristine AC and MIL-53(Al). The p-nitrophenol adsorption rate of MIL-53(Al)@AC-10 was higher than pristine MIL-53(Al) by 36%. The adsorption performance decreased in the order of MIL-53(Al)@AC-10 > MIL-53(Al)@AC-15 > MIL-53(Al)@AC-5 > MIL-53(Al). The maximum adsorption capacity for p-nitrophenol of MIL-53(Al)@AC-10 reached 250 mg.g −1 , which are higher than the data reported in most literature. The fabrication of AC into MIL-53(Al) is a promising method to obtain a composite with high adsorption capacity and stability. The adsorption kinetics and isotherms fitted well with pseudo-second-order model and Langmiur model. The adsorption is mainly through the π-π and hydrogen bond interactions, and hydrophobic effect.
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高影响因子
ANALYST
·
2013
·Vol. 138
·期 16
·4526-4531
·
IF 3.969
Ya Li Liu,Xi Juan Zhao,Xiao Xi Yang,Yuan Fang Li
In this paper, a nanosized porous metal–organic framework, Fe-MIL-88NH2, was facilely prepared with a uniform octahedral shape by the addition of acetic acid, and for the first time was demonstrated to possess intrinsic peroxidase-like activity. Kinetic analysis and electron spin resonance measurements indicated that the catalytic behavior was consistent with typical Michaelis–Menten kinetics and follows a ping-pong mechanism. As a novel peroxidase mimic material, Fe-MIL-88NH2 shows the advantages of high catalytic efficiency, ultrahigh stability and high biocompatibility in aqueous medium compared with natural enzymes and other peroxidase nanomimetics. Here, Fe-MIL-88NH2 was used to quickly catalyze oxidation of the peroxidase substrate 3,3′,5,5′-tetramethylbenzidine (TMB) in the presence of H2O2 to produce a colored product, which provided a simple, sensitive and selective method for the colorimetric detection of glucose. Glucose could be linearly detected in the range from 2.0 × 10−6 to 3.0 × 10−4 M with a detection limit of 4.8 × 10−7 M, and the color variation for glucose response was also obvious by visual observation at concentrations as low as 2.0 × 10−6 M. More importantly, the colorimetric method could be successfully applied to the determination of glucose in diluted serum samples.
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高影响因子
Journal of Environmental Sciences
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2021
·
IF 5.565
Jiaqi Shi,Rui Han,Shuangchun Lu,Qingling Liu
A series of highly-hydrophobic MIL-53-Al (MIL = Materials of Institut Lavoisier) frameworks synthesized via decoration of the Al-OH groups by alkyl phosphonic acid were developed as adsorbents for removing acetone from humid gas streams. The newly prepared materials were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscope (SEM), N 2 adsorption-desorption and thermogravimetric analysis (TGA). Their adsorption behaviors toward acetone vapor under dry and wet conditions were studied subsequently. Results showed that alkyl phosphonic acid was successfully grafted into MIL-53-Al skeleton through coordinating interaction with Al 3+ generating MIL-53-Al@C x ( x = 12, 14, 18). The MIL-53-Al@C x exhibited similar crystal structure and thermal stability to parent MIL-53-Al. Furthermore, the modified materials showed significantly enhanced hydrophobicity . The water vapor uptake of MIL-53-Al@C 14 decreased by 72.55% at 75% relative humidity (RH). Dynamic adsorption experiments demonstrated that water vapor had almost no effect on the acetone adsorption performance of MIL-53-Al@C 14 . Under the condition of 90% RH, the acetone adsorption capacity of MIL-53-Al@C 14 was 102.98% higher than that of MIL-53-Al. Notably, MIL-53-Al@C 14 presented excellent adsorption reversibility and regeneration performance in 10 adsorption-desorption cycles. Taken together, the strategy of metal-OH group modification is an attractive way to improve the acetone adsorption performance over metal-organic frameworks (MOFs) under humid conditions. Besides, MIL-53-Al@C 14 would be deemed as a promising candidate for capturing acetone in high moisture environment.
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高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Yingying Du,Qing Liu,Yong Zhao,Gangbing Zhu,Zongmian Zhang,Yinhui Yi
Tetracycline (TC) is an effective antibiotic that is extensively used. However, incomplete use of TC would leave residues in various environmental substrates, and excessive accumulation of TC can cause permanent damage to organisms and human health. Consequently, it is crucial to develop a fast and simple TC detection technique. In this work, a hydrothermal approach was used to create an amino functionalized bimetallic organic framework of iron and nickel (MIL(Fe 3 Ni)-88B) for homogeneous electrochemical (HEC) and colorimetric detection of TC. The synergistic effects of Ni and Fe enhance the redox capacity of MIL(Fe 3 Ni)-88B, and the amino group on its surface can bind with TC through a hydrogen-bonding interaction, which causes the electronic interactions and further enhance the peroxidase-like (POD-like) activity of MIL(Fe 3 Ni)-88B. Thus, with H 2 O 2 and o-phenylenediamine (OPD) as reaction substrate, the Fenton reaction is enhanced by the transfer of the electron between TC and MIL(Fe 3 Ni)-88B, enabling HEC detection of TC. Meanwhile, OPD could be oxidized to yellow 2,3-diaminophenylazine (DAP) under the catalysis reaction, providing feasibility for colorimetric detection of TC. The constructed dual-model analysis of TC achieves a wide linear range of 0.01 ∼ 10.0 μM for HEC detection and 0.25 ∼ 25.0 μM for colorimetric method, respectively, coupled with the low detection limits of 0.003 and 0.086 μM. Additionally, due to the unique structure of MIL(Fe 3 Ni)-88B, it can be used for highly effective detection of TC in water samples, and the detection of TC in real water samples based on the dual-model strategy has high recoveries between 97.04 % and 103.76 %.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Yanni Jiang,Zhongjuan Wang,Jianbo Huang,Feng Yan,Ye Du,Chuanshu He,Yang Liu,Gang Yao,Bo Lai
Singlet oxygen ( 1 O 2 ) is an effective reactive oxygen species in disinfection due to its long lifetime and sensitivity to bacteria. This study tried to develop a 1 O 2 dominated process for bacterial inactivation by visible light (vis) photocatalysis assisted by PMS. A novel CuS-modified MIL-101(Fe) (CSMF) photocatalyst was synthesized for the first time. Compared with MIL-101(Fe), CuS-modified MIL-101(Fe) enhanced the photocatalytic performance by increasing absorption of visible light, narrowing down the bandgap and promoting photo carrier separation efficiency. 7.5-log Gram-negative Escherichia coli (E. coli) could be inactivated by Vis/CSMF/PMS system within 40 min, showing much better performance of 3.5-log E. coli inactivated by Vis/PMS system. The Vis/CSMF/PMS system is applicable in a broad pH range from 3.0 to 9.0, remaining quite steady disinfection efficiency after regenerations of the catalyst. Quenching experiments and electron paramagnetic resonance (EPR) analysis demonstrated 1 O 2 was the dominated ROS rather than OH • and SO 4 •− . Three pathways, including photo-generated electrons (e − ) and O 2 dependent pathway, photo-generated holes (h + ) dependent pathway and CSMF enhanced PMS dissociation pathway, were evidenced to responsible for 1 O 2 formation by aeration experiments and specific 1 O 2 fluorescence probe. 1 O 2 in water attacked the bacterial cell membranes first, got inside the cell and up-regulated the level of intracellular ROS, which further led to cell membrane damage and DNA degradation so as to irreversible cell death. In addition, the developed Vis/CSMF/PMS system could also efficiently inactivate gram-positive bacteria Staphylococcus aureus and fecal coliform bacteria in practical wastewater, suggesting its wide applicability as a promising alternative to conventional disinfection process.
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高影响因子
Molecular Catalysis
·
2025
·
IF 4.9
Xuetong Liu,Chi Zhang,Nuoyan Li,Runfeng Li,Songlin Lei,Wei Hong,Shuguang Deng,Jun Wang
Herein, a novel and flexible self-supporting gas diffusion electrode (GDE) was fabricated, which including an electrodeposited Bi nanocomposite as a catalyst layer and MIL-101 derived porous carbon in the gas diffusion layer (GDL). Compared with the conventional fabrication of GDE electrodes, the electrodeposition approach can avoid the tedious drop-casting processes of the catalyst layer (CL). The in situ growth mode by electrodeposition can also ensure the firmly interaction between CL and current collector, thus enhancing the stability of the electrode. Meanwhile, the porous carbon derived from MIL-101 which with a high specific area is conducive for the CO 2 enrichment on the electrode, thus facilitate the reaction with high current density. Owe to the special structure, the resultant catalyst showed excellent performance for electrocatalytic CO 2 reduction reaction (CO 2 RR) with enhanced formic acid generation. Notably, at -1.37 V ( vs. RHE), a large current density of 400 mA cm -2 and a high formate Faraday efficiency (FE formate ) of 96.5 % were achieved, and the yield of formic acid reached 46.5 mmol cm -2 h -1 , which is superior to most electrocatalytic catalysts for CO 2 RR. In addition, the FE formate value remained high (>90 %) over a wide voltage window of 800 mV, and the catalyst also maintained stable operation at industrial current density for 70 h. This work provides a new strategy for the design of GDEs with novel structure to achieve high activity and durability for different electrocatalysis.
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Water
·
2025
·Vol. 17
·期 9
·1309
·
IF 3
Xiaoyan Ma,Rongbin Quan,Wenqing Cao,Weijie Zhang,Su Jiang,Jiao Feng,Jiulong Wang,Stefanos Giannakis
Electrochemical reduction is a promising strategy for the dechlorination of halogenated organic compounds, offering advantages such as enhanced electron transfer efficiency and increased hydrogen atom concentration. It has garnered significant attention for application in mitigating halogenated disinfection by-products (DBPs) in drinking water, owing to its high efficiency and simple operation. In this study, trichloroacetic acid (TCAA), a representative DBP, was selected as the target contaminant. A novel composite cathode comprising a metal–organic framework MIL-53(Fe)@C supported on an Nd magnet (MIL-53(Fe)@C-MAG) and its dechlorination performance for TCAA were systematically investigated. The innovative aspect of this study is the magnetic attachment of the MOF catalyst to the carbonized cathode surface treated through carbonization, which fundamentally differs from conventional solvent-based adhesion methods. Compared to the bare electrode, the MIL-53(Fe)@C-MAG achieved a TCAA removal efficiency exceeding 96.03% within 8 h of contact time. The structural characterization revealed that the α-Fe0crystalline phase serves as the primary active center within the MIL-53(Fe)@C catalyst, facilitating efficient electron transfer and TCAA degradation. The scavenger experiments revealed that TCAA reduction involves a dual pathway: direct electron transfer and atomic hydrogen generation. The modified MIL-53(Fe)@C-MAG electrode exhibited robust electrolytic performance over a broad pH range of 3–7, with TCAA removal efficiency showing a positive correlation with current density within the range of 10–50 mA/cm2. Furthermore, the electrode maintained exceptional stability, retaining more than 90% removal efficiency after five consecutive operational cycles. The versatility of the system was further validated by the rapid and efficient dechlorination of various chlorinated DBPs, demonstrating the broad applicability of the electrode. The innovative magnetic composite electrode demonstrates a significant advancement in electrochemical dechlorination technology, offering a reliable and efficient solution for the purification of drinking water contaminated with diverse halogenated DBPs. These results provide valuable insights into the development of electrolysis for dechlorination in water treatment applications.
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MATERIALS & DESIGN
·
2022
·
IF 9.417
Zhiming Hu,Caina Xu,Yonghao Liang,Taiyuan Liu,Huayu Tian,Yingchao Zhang
Compared with visceral cancers, breast cancer is epidermal and can be efficiently eliminated by photoacoustic imaging (PAI)-guided cancer therapy. In this study, we developed multifunctional nanoparticles (DMTH NPs) by loading doxorubicin (DOX) into MIL-100, which were modified with tannic acid (TA) and hyaluronic acid (HA) using a simple and convenient method. MIL-100 (Fe) in DMTH NPs allowed for chemodynamic therapy by converting endogenous hydrogen peroxide (H 2 O 2 ) into •OH through a Fenton-like reaction to assist DOX in killing cancer cells. DMTH NPs had high DOX loading efficiency for chemotherapeutic function and had the ability for photoacoustic imaging (PAI) and photothermal therapy (PTT) after being modified by TA. Specifically, DMTH NPs targeted tumors and had low toxicity in vivo . Ultimately, the released DOX and •OH cooperated in killing MCF-7 cells effectively in vitro . The enhanced and precise breast cancer treatment was achieved using a PAI-guided chemodynamic/chemo/photothermal synergistic therapy under laser irradiation in vivo . Overall, this work presented an innovative strategy for designing multifunctional nanoparticles for effective imaging-guided combination therapies to combat breast cancer.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Junyan Liu,Liting Xu,Xingwei Li
Supports play a key role in the performance of platinum-based catalysts. In this work, using NH 2 -MIL-125 as the precursor, mixed-phase TiO 2 coated by nitrogen-doped carbon (TiO 2 @NC) is successfully prepared, and used to support platinum (Pt/TiO 2 @NC) for methanol oxidation reaction. In 0.5 M H 2 SO 4 solution containing 0.5 M CH 3 OH, the area specific activity of Pt/TiO 2 @NC catalyst (1.186 mA cm -2 Pt) is 4.4 times that of commercial Pt/C (0.272 mA cm -2 Pt). At a fixed potential of 0.15 V (vs. Hg/Hg 2 SO 4 ), the current density of Pt/TiO 2 @NC is still 3.6 times that of Pt/C after 3600 s of polarization. Meanwhile, Pt/TiO 2 @NC has also a low tafel slope, a large exchange current density and a high charge transfer coefficient. A large number of Ti-OH groups can alleviate poisoning effect caused by the produced "CO ads " intermediate during methanol oxidation reaction. Nitrogen-doped carbon not only improves the conductivity of TiO 2 support, but provides strong anchor sites for the nucleation of Pt nanoparticles , resulting in an enhanced catalytic activity of Pt/TiO 2 @NC.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Chuanxin Teng,Qingli Xie,Rongping Yang,Shiji Deng,Kaiwei Li,Hanli Qiao,Xuehao Hu,Libo Yuan,Xiaogang Xue
Tetracycline (TC) detection is crucial for food safety, ecological balance, and human health. This study proposes an evanescent wave enhanced micro-structure polymer optical fiber (POF) sensor for highly sensitive detection of TC by employing the C 3 N 4 -MIL-53 heterostructure. The micro-structure composed of a side-polish region and micro-grooves, which can effectively enhance the intensity of POF's evanescent wave. The C 3 N 4 -MIL-53 heterostructure was fabricated and modified on the side-polish region as the sensitive film for selective adsorption and enrichment of TC molecules. This molecular adsorption process induced localized refractive index increases in the film, which subsequently led to an attenuation of the transmitted light. A theoretical model was established to illustrate the enhanced sensing principle of the micro-structure on POF and the structural parameters of the sensors are experimentally optimized. The sensor demonstrates the rapid detection capability of TC, and the sensitivity of the sensor reaches to −0.00155 ppm −1 with range of 5–20 ppm, and the LOD is 0.005 ppm. The proposed micro-structure POF sensor features easy fabrication and low-cost, which provides a new approach for TC detection.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Tianyang Zhao,Chengbo Jia,Haoran Sun,Run Li,Zezhou Zhang,Yu Wang,Jialin Guo,Feng Tian,Chunfeng Song
The mixed matrix membrane (MMM) can combine the advantages of organic matrix and inorganic fillers, but it has the problem of limited compatibility between the fillers and the matrix. In this work, we constructed a metal-organic framework material (MOF) with a functional shell. Through the induced grafting effect of surfactants, a layer of zeolite imidazolate framework structure material (ZIF-8) was formed on the chromium-based metal-organic framework material (MIL-101(Cr)). Utilizing the microporous structure of the shell ZIF-8 and the micropore-mesopore structure of the core MIL-101(Cr), a “separation-diffusion” gas mass transfer pathway was formed within the membrane, effectively enhancing the CO 2 separation and purification performance of the membrane. Then, the MIL@ZIF filler was incorporated into the cross-linked PEO polymer matrix to obtain the XLPEO/MIL@ZIF membrane. It was demonstrated that the MIL@ZIF core-shell filler has a more excellent ability to enhance the gas separation performance of the membrane compared to the single MIL-101(Cr) and ZIF fillers. Under the optimal loading condition, the XLPEO/MIL@ZIF membrane achieves a CO 2 permeability of 328 Barrer and a CO 2 /N 2 selectivity of 93.1, which are 83.2 % and 72.1 % higher than the pure membrane, surpassing the upper limit (2019). This filler preparation strategy and MMM preparation method provide a promising direction for subsequent related research.
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高影响因子
ACS Omega
·
2025
·
IF 4.3
Dandan Hao,Bing Yu,Tong Zhao,Meisi Chen
In response to the pollution of airborne inhalable particulate matter (PM) and the demand for high-efficiency, low-resistance filtration materials, this study prepared a CS/NP-2.5 paper-based filter by incorporating NH2-MIL-53 into pulp fibers and introducing chitosan (CS) as a carrier. Characterization results show that the composite material forms a complex three-dimensional network structure, significantly enhancing PM capture efficiency. The removal rates for PM2.5 and PM10 reached 98.41% and 99.05%, respectively, with a pressure drop of only 24.10 Pa, which is an improvement of approximately 7% compared to the directly doped NP-2.5 (PM2.5 removal rate of 91.57%). CS enhanced the loading stability of the MOFs on the fibers; after 10 cycle tests, the filtration efficiency was still maintained above 94%, demonstrating excellent reusability. This study, through green synthesis and functional synergy, provides a new approach for the design of high-efficiency paper-based filtration materials.
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PubMed
高影响因子
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