CHEMICAL ENGINEERING SCIENCE
·
2024
·
IF 4.1
Chengming Guo,Pengtao Guo,Youbin Zhou,Xin Yan,Huifang Li,Dahuan Liu
Porous adsorbents are widely used for the adsorptive separation of carbon dioxide (CO 2 ) from gas mixtures, offering a promising solution to address both the energy crisis and environmental issues. However, developing highly efficient CO 2 selective adsorbents has been challenging due to the similar physicochemical properties of CO 2 and other gases. To overcome this challenge, we herein have developed a core–shell composite utilizing ionic liquids (ILs) and metal–organic frameworks (MOFs) based on the dissolution-diffusion mechanism. The unique solubility differences of ILs for various gas molecules, particularly their strong solubility for CO 2 , allow only CO 2 to be adsorbed while excluding other gases. As a result, the composite exhibits a remarkable separation selectivity for CO 2 /C 2 H 2 , CO 2 /CH 4 and CO 2 /N 2 . Breakthrough experiments have verified the outstanding performance of this core–shell composite in separating gas mixtures containing CO 2 impurities. Remarkably, this composite can be synthesized by a simple method, which is more practical for large-scale production.
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高影响因子
MOLECULES
·
2024
·Vol. 29
·期 8
·1851
·
IF 4.2
Jian Yan,Wenjia Li,Yingyin Yu,Guangyu Huang,Junjie Peng,Daofei Lv,Xin Chen,Xun Wang,Zewei Liu
Atmospheric water harvesting (AWH) is considered a promising strategy for sustainable freshwater production in landlocked and arid regions. Hygroscopic salt-based composite sorbents have attracted widespread attention for their water harvesting performance, but suffer from aggregation and leakage issues due to the salting-out effect. In this study, we synthesized a PML hydrogel composite by incorporating zwitterionic hydrogel (PDMAPS) and MIL-101(Cr) as a host for LiCl. The PML hydrogel was characterized using various techniques including X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared (FTIR), and thermogravimetric analysis (TGA). The swelling properties and water vapor adsorption-desorption properties of the PML hydrogel were also assessed. The results demonstrate that the MIL-101(Cr) was uniformly embedded into PDMAP hydrogel, and the PML hydrogel exhibits a swelling ratio of 2.29 due to the salting-in behavior. The PML hydrogel exhibited exceptional water vapor sorption capacity of 0.614 g/g at 298 K, RH = 40% and 1.827 g/g at 298 K, RH = 90%. It reached 80% of its saturated adsorption capacity within 117 and 149 min at 298 K, RH = 30% and 90%, respectively. Additionally, the PML hydrogel showed excellent reversibility in terms of water vapor adsorption after ten consecutive cycles of adsorption-desorption. The remarkable adsorption capacity, favorable adsorption-desorption rate, and regeneration stability make the PML hydrogel a potential candidate for AWH. This polymer-MOF synergistic strategy for immobilization of LiCl in this work offers new insights into designing advanced materials for AWH.
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PubMed
高影响因子
FOOD CONTROL
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2024
·
IF 5.6
Xia Xu,Xin Liu,Yixing Qiu,Yufan Song,Xuxia Zhou,Yuting Ding
The accurate determination of histamine in fish is imperative for food safety, given the toxic nature of this biogenic amine . This study presents an innovative colorimetric aptasensor for the ultrasensitive detection of histamine in fish, utilizing nanozymes based on magnetic metal-organic frameworks coated with Pt nanoparticles (Fe 3 O 4 @MOF@Pt), which exhibit high peroxidase-like catalytic activity, magnetism, and superior optical properties. The surface of Fe 3 O 4 @MOF@Pt nanozymes were modified with DNA strands complementary to the histamine aptamer , creating effective colorimetric probes. In the presence of histamine, these colorimetric probes compete with histamine molecules for aptamer binding on the enzyme plate. Color development is triggered by adding a TMB and H 2 O 2 substrate solution to the enzyme plate. This competitive binding-based aptasensor allows for rapid and accurate histamine quantification within a linear range of 10 pM to 10 μM, and a notable detection limit of 6.23 pM. Furthermore, the sensor demonstrated excellent specificity, distinguishing histamine from l -histidine and other biogenic amines. Tested on mackerel samples, the aptasensor showed spiked recoveries of 91.4%–109.6%, validating its practical applicability. This sensor offers an ultrasensitive, specific, and reusable tool for histamine detection, representing a significant advancement in ensuring the safety of fish products.
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高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2024
·
IF 4.1
Jinting Zhu,Linhan Fan,Wenqing Li,Xinru Qi,Changyan Sun,Wenjun Li,Zhidong Chang
The accumulation of heavy metal ions in nature will not only lead to the further deterioration of the environment, but also directly do harm to human health. And as a gas pollutant, excessive inhalation of formaldehyde is also harmful to human health. Herein, a novel Eu-MOF was synthesized by solvothermal method using Eu 3+ , 2-pyridine-4-yl-3H-benzimidazole-5-carboxylic acid (HL) and 1,10-phenanthroline (phen), which can be used as a ratio fluorescent probe to detect Hg 2+ , Cd 2+ and formaldehyde, and the limits of detection(LOD) can reach 34, 9.91 and 194 nM respectively. Among them, the LOD of Eu-MOF for Cd 2+ has reached the lowest level at present. Noticeable, Eu-MOF can detect formaldehyde in both liquid and gas phases, and the response time is extremely short. In addition, Eu-MOF has been applied to trace detection of Hg 2+ and Cd 2+ in tap water, lake water and sea water with satisfactory recoveries (ranging from 98.10 % to 103.0 %). A program has been developed for quickly calculating the concentration of the substances to be detected by capturing the fluorescent color of the solvents under the ultraviolet light.
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Nanomedicine-Nanotechnology Biology and Medicine
·
2024
·
IF 4.2
Yuan Gao,Jun Wang,Weiwei Zhang,Fei Ge,Wanzhen Li,Feiyang Xu,Ting Cui,Xing Li,Kai Yang,Yugui Tao
Calcium overload therapy refers to the condition of intracellular Ca 2+ overload, which causes mitochondrial damage and leads to the uncontrolled release of apoptotic factors into the cytoplasm through the open mitochondrial permeability pore. Based on this, it is playing an increasingly important role in the field of oncology due to its good efficacy and small side effects. However, the regulation of calcium homeostasis by cancer cells themselves, insufficient calcium ions (Ca 2+ ) in tumor sites and low efficiency of calcium entering tumor have limited its efficacy, resulting in unsatisfactory therapeutic effect. Therefore, a novel CAP/BSA@TCP-ZIF-8 nanoparticle drug carrier system was constructed that can provide Ca 2+ from exogenous sources for pH-controlled degradation and drug release at the same time. Both in vivo and in vitro experiments have proved that the nanomaterial can activate TRPV1 channels and provide exogenous Ca 2+ to cause Ca 2+ overload and apoptosis, thus achieving anti-tumor effects.
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PubMed
高影响因子
CARBON
·
2024
·
IF 10.5
Luyao Han,Haibo Yang,Zhixin Cai,Ying Lin
Although carbon fibers have significant dielectric loss, poor impedance matching often results in a narrow effective absorption bandwidth, which in turn induces unsatisfactory microwave absorption (MA). The composition and microstructure are remarkably critical factors in order to optimize the MA performance. Herein, the flexible magnetic carbon nanofibers (CoFe@CNFs) were prepared based on one-dimensional carbon nanofibers and core-shell MOF derivatives by electrospinning technology and subsequent high-temperature heat treatment. The integration of core-shell ZIF-67@ CoFe-PBA derivatives, the three-dimensionalconductive network of carbon nanofibers and the synergistic magnetic loss and dielectric loss significantly optimizes the impedance matching, which enables the CoFe@CNFs to simultaneously achieve favorable MA performance and lightweight characteristics. The CoFe@CNFs show a minimum reflection loss value of −47.9 dB and the maximum effective absorption bandwidth of 6.5 GHz when the filling ratio is only 7.5 wt%. In addition, the complex composition and unique microstructure endow the composites with excellent flexibility. This work provides a meaningful guidance for constructing lightweight MA materials with broadband absorption characteristics.
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高影响因子
RSC Advances
·
2014
·Vol. 4
·期 79
·41902-41909
·
IF 3.708
Tian Jin,Qiang Yang,Chun Meng,Jian Xu,Honglai Liu,Jun Hu,Hao Ling
The world is becoming more stringent on lowering the sulfur concentrations in fuels. To fulfill this expectation, a new type of magnetic desulfurization adsorbent, Fe3O4@PAA@MOF-199, was designed and fabricated using a facile two-step assembly approach, in which PAA inventively acted like a bridge to incorporate different amounts of magnetite Fe3O4 into a MOF-199 crystal matrix. Fe3O4@PAA@MOF-199s were demonstrated to be efficient adsorbents for the removal of S-compounds, such as thiophene, benzothiophene (BT) and dibenzothiophene (DBT), from a model fuel, and the sulfur saturated adsorption capacity followed the order of DBT > BT > thiophene. The magnetization of Fe3O4@PAA@MOF-199s ensured that the adsorbents had good performance in magnetic separation. The relative high adsorption capacity, the separation efficiency, as well as the stable recyclability indicated that magnetic Fe3O4@PAA@MOF-199 would be a promising adsorbent in adsorptive desulfurization.
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高影响因子
Journal of Materials Chemistry A
·
2017
·Vol. 5
·期 20
·9544-9552
·
IF 8.867
Ying Pan,Yuxin Zhao,Shanjun Mu,Yu Wang,Chunming Jiang,Quanzhen Liu,Qianrong Fang,Ming Xue,Shilun Qiu
A new strategy was developed to introduce active site K+ into the pores of MOF precursors, and various N-doped hierarchical porous carbons were prepared in a one-step synthetic route. The effect of K+in situ activation on the textural properties of the derived porous carbons was studied systematically, and the CO2 capture properties and electrochemical performance of these porous carbons were enhanced for their application in supercapacitors. The KBM-700 sample derived from K@bio-MOF-1 (potassium-ion-exchanged bio-MOF-1), which had high nitrogen content (10.16%) and micropore volume (73%), exhibited good CO2 uptakes (4.75 mmol g−1), and high adsorption selectivity for CO2/N2 at 298 K and 1 bar (Sads = 99.1) as well as high specific capacitance (230 F g−1) and excellent electrochemical cycling stability (97% retention after cycling 10 000 times).
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高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2024
·
IF 8
Xiaohong Tan,Hao Lin,Jiahao Zhou,Zhanhua Su,Bingbing Wan,Xiangming Li,Zhongqun Zhou,Yuge Liu,Guiyin Li
Hepatocellular carcinoma (HCC) is a leading cause of cancer-related mortality worldwide. Early detection of HCC is pivotal for early treatment, thereby improving survival rates. Golgi protein 73 (GP73) is a promising biomarker for early HCC diagnosis, making it crucial to develop a sensitive method to detect GP73. In this study, a novel ratiometric electrochemical aptasensor was fabricated for the sensitive detection of GP73 using Hemin-Cu-based metal-organic framework (Hemin-Cu-MOF) nanocomposites and GP73 aptamers. The Hemin-Cu-MOF nanocomposites possessed not only excellent electroactive property with the Hemin and Cu-MOF as dual signal outputs, but also good electroconductivity to amplify the electrochemical signals. The Hemin-Cu-MOF nanocomposites with numerous active sites was used to label the GP73 aptamer (AptI) and construct the Hemin-Cu-MOF-AptI signal probe. Another sulfhydryl-modified GP73 aptamer (AptⅡ) was immobilized on the gold nanoparticles (Au) modified screen-printed carbon electrode (Au/SPCE) through gold-sulfur (Au-S) bonds and used as a capture probe. Upon adding GP73, AptI and AptⅡ specifically recognized GP73 to form the sandwich complex AptⅡ@GP73@Hemin-Cu-MOF-AptI, making the dual signal of Hemin-Cu-MOF change and indicating GP73 level. Under optimal experimental conditions, the ratio of two oxidation peak currents (I Cu-MOF /I Hemin ) was proportional to the GP73 concentration (1.0–300.0 ng/mL), with a detection limit as low as 0.625 ng/mL. Furthermore, the aptasensor was tested in real human serum samples using the standard recovery method, with recoveries ranging from 104.10 % to 116.66 %. Thus, the proposed aptasensor has great potential in clinical analysis for detecting GP73 and early diagnosing of HCC.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Xi Quan,Jun Zhang,Linlin Yin,Yu Tian
In this study, the activation of peroxymonosulfate (PMS) and selective degradation of nonsteroidal anti-inflammatory drugs were investigated using hydrophobically modified Fe 3+ @Cu-MOF. The Fe 3+ @Cu-MOF-CTAB/PMS system demonstrated high-efficiency, achieving near-complete degradation of diclofenac within 120 min. The degradation rate constants for diclofenac, ibuprofen, and naproxen were 0.0048, 0.00103, and 0.00046 min −1 , respectively, positively correlated with their hydrophobicity. Longer hydrophobic surfactant chains in Fe 3+ @Cu-MOFs lead to greater initial adsorption of diclofenac, enhancing degradation efficiency upon the introduction of PMS. The Fe 3+ @Cu-MOF-CTAB/PMS system removes over 80 % of diclofenac in various water matrices, showing optimal efficiency in acidic environments but reduced effectiveness with competing anions. Post-degradation changes in the oxidation states of copper and iron in the MOF structure indicated a synergistic redox mechanism essential for PMS activation. The hydroxylation and C-N bond cleavage in diclofenac were key degradation pathways. This study highlights the potential of hydrophobically modified Fe 3+ @Cu-MOFs in water treatment, providing insights into the interplay between material design, hydrophobic interactions, and catalytic performance.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Zhenyu Gao,Baixue Deng,Longfei Xu,Jun Tang,Qianqian Zhao,Tianfeng Hu,Yu Chen,Lingfeng Deng,Yuanjuan Bai,Kun Du
The risks associated with dye wastewater to the ecological environment are becoming increasingly significant. The efficient utilization and effective protection of water resources have become a persistent challenge. Employing coupling technologies to enhance the wastewater treatment process is an effective strategy for achieving sustainable water resource utilization. Herein, composite catalysts with iron-based metal-organic frameworks loaded with molybdenum disulfide (Fe-MOF@MoS₂) were prepared by a hydrothermal approach. The Fe-MOF@MoS 2 composite catalysts demonstrated superior degradation efficiencies towards various organic dyes like methylene blue, rhodamine B, and Congo red, especially in conditions of low hydrogen peroxide concentration and ultrasonic vibration. Results indicated that after 30 minutes of piezoelectric-Fenton-like treatment, the removal efficiency of the above organic dyes exceeded 90 %. The piezoelectric effect led to efficient cyclic conversion of Fe 2+ /Fe 3+ ions, while the inclusion of MoS 2 enhanced H 2 O 2 activation efficiency. Moreover, the Fe-MOF@MoS 2 catalyst displayed remarkable recycling capabilities, retaining 90 % of its initial catalytic activity even after six degradation cycles. Thus, the development of composite catalysts with combined piezoelectric and Fenton-like functions holds great promise for improving organic dye wastewater treatment and safeguarding environmental and water resources.
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高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Dongfeng Hong,Kejing Zhang,Mingshuo Yang,Ruijing Yang,Yusheng Xu,Qiudong Duan,Dacheng Zhou,Yongjin Li,Zhengwen Yang,Zhiguo Song,Yong Yang,Qi Wang,Jianbei Qiu
Photocatalytic conversion of CO 2 into valuable fuels is considered a promising approach for the development of sustainable and renewable energy sources. In this study, we utilized Mo-MOF as a precursor to obtain MoO 3 by pyrolytic derivatization and treated it to obtain MOF-MoO 3-x containing oxygen vacancies as a catalyst for the photocatalytic reduction of CO 2 to CO. MOF derivatization altered the morphology of the MoO 3 , which made the formation of oxygen vacancies easier and facilitated the separation of electron-hole pairs. Meanwhile, the increased specific surface area and the appearance of surface oxygen vacancies enhanced the CO 2 adsorption and activation capabilities of MOF-MoO 3-x . As a result, MOF-MoO 3-x demonstrated a significant enhances in the photoreduction activity of CO 2 . Its CO yield was 29.1 μmolg −1 h −1 , which was 3.7 times higher than that of MOF-MoO 3 and 2.4 times higher than that of H-MoO 3-x . This innovative strategy may provide a new avenue for improving the comprehensive performance of photocatalysts and developing renewable energy sources.
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高影响因子
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