ACS Applied Nano Materials
·
2023
·
IF 5.9
Fan Liu,Wenbo Li,Junjie Yang,Dongxiao Ji,Yuan Liang,Hengtao Liang,Xiang Li,Pengju Han,Zupei Yuan,Jianxin He,Weili Shao
Highly efficient and reusable protective materials for chemical warfare agents (CWAs) are in high demand. Here, we used a surface modification technique to develop a material that provides chemical protection. Using an electrospun polyacrylonitrile (PAN) nanofiber membrane as the substrate, we modified the surface of the nanofiber with dopamine hydrochloride, which self-polymerized to form a polydopamine (PDA) surface layer, onto which we loaded metal–organic framework (MOF-808) particles. The presence of PDA on the surface of the PAN nanofibers significantly increased the breaking strength (2-fold increase) and elongation (9-fold increase) of the nanofiber membrane. Moreover, the PDA functionalities formed coordination sites to trigger the in situ growth of MOF-808 particles on the surface of the nanofiber membrane, thereby considerably increasing the growth rate and loading capacity. The surface of the nanofiber membrane was completely covered with MOF-808 particles following solvothermal treatment for 16 h. The MOF-808/PAN/PDA composite membrane could rapidly degrade 99.9% of dimethyl-4-nitrophenyl phosphate to p-nitrophenol within 8 min. After the membrane was used several times, the conversion rate stabilized at 95.9%, indicating that the MOF-808/PAN/PDA composite membrane has significant potential for application as protective clothing for CWAs.
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ELECTROCHIMICA ACTA
·
2022
·
IF 7.336
Yuhuan Zhang,Chun Xian Guo,Hongfang Du,Xingyu Wang,Liu Liu,Chang Ming Li
It is critical for fabricating ultrasensitive biosensors to realize real-time in situ monitoring of superoxide anions (O 2 •− ), a typical reactive oxygen species (ROS) that plays critical roles in diverse signaling pathways. Here, a simple on-step strategy was developed for morphology-controllable synthesis of manganese-organic framework (Mn-MOF) toward the enhanced sensing performance of O 2 •− . Interestingly, by delicately tuning the ratios of solvents to regulate initial concentrations of precursors, Mn-MOF nanoparticles , asymmetric nanolollipops and nanorods all with homogeneous components were prepared. As expected, Mn-MOF nanolollipops outperform other nanostructures in O 2 •− sensing due to their larger active surface areas which can attribute to their excellent dispersibility provided by the asymmetric structure, and the faster electron transfer rate promoted by the stem. Using the Mn-MOF nanolollipops-based O 2 •− biosensor, a high sensitivity of 105 μA cm −2 μM −1 is achieved, and the real-time in situ detection of O 2 •− released from living cells was successfully realized. This work holds a great potential in the exploration of O 2 •− -related biological processes in vivo , while offering deep scientific insights for solvents engineered morphologies of other MOF nanomaterials.
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JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION
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2023
·
IF 3.6
Haodong Wei,Weixin Chen,Shunyu Chen,Tao Zhang,Xiufeng Xiao
Scaffolds based on gelatin (Gel) play a crucial role in bone tissue engineering. However, the low mechanical properties, rapid biodegradation rate, insufficient osteogenic activity and lacking anti-infective properties limit their applications in bone regeneration. Herein, the incorporation of ibuprofen (IBU)-loaded zeolitic imidazolate framework-8 (ZIF-8) in a methacrylated gelatin (GelMA) matrix was proposed as a simple and effective strategy to develop the IBU-ZIF-8@GelMA scaffolds for enhanced bone regeneration capacity. Results indicated that the IBU-loaded ZIF-8 nanoparticles with tiny particle sizes were uniformly distributed in the GelMA matrix of the IBU-ZIF-8@GelMA scaffolds, and the IBU-loaded ZIF-8 growing in the scaffolds enabled the controlled and sustained releasing of Zn2+ and IBU in pH = 5.5 over a long period for efficient bone repair and long-term anti-inflammatory activity. Furthermore, the doping of the IBU-loaded ZIF-8 nanoparticles efficiently enhanced the compression performance of the GelMA scaffolds. In vitro studies indicated that the prepared scaffolds presented no cytotoxicity to MC3T3-E1 cells and the released Zn2+ during the degradation of the scaffolds promoted MC3T3-E1 cell osteogenic differentiation. Thus, the drug-loaded ZIF-8 modified 3D printed GelMA scaffolds demonstrated great potential in treating bone defects.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 19
·1-12
·
IF 2.8
Qin Longlong,Zeng Biao,Qin Ting,Li Chen,Tang Chao,Huang Shengxiang,Deng Lianwen
Magnetic nanoparticles combined with semiconductive metal oxides are considered to be ideal candidates for electromagnetic wave absorption materials, benefiting from suitable conductivity, matched magnetism and strong polarization. In this work, Co–ZnO binary MOF (ZIF-67, ZIF-8)-based carbon composites were fabricated via a facile synthesis route. After optimization of composition and technological parameters, the synthesized nanocomposites acquired optimal electromagnetic characteristics and exhibited superb microwave absorption ability. The lowest reflection loss of the Co–ZnO–C-800 sample reached − 44.8 dB at 9.2 GHz with a thickness of 2.9 mm, and the effective absorption bandwidth (EAB) was 6.95 GHz (6.59–13.54 GHz). The microwave loss mechanism of the nanocomposite material mainly involved dielectric loss and magnetic resonance absorption. This work provides an ingenious design and synthesis strategy for novel lightweight electromagnetic wave absorbers with broadband EAB and strong absorption.
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CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Xiao-Gang Jin,Xiao-Kang Liang,Jia-Hao Liu,Jia-Wei Mo,Tian-Xiang Ren,Xiao-Hua Ma,Zhen-Liang Xu
High-performance nanofiltration membrane is of great importance to alleviate the worldwide freshwater crisis. Recent studies have shown that the performance of nanofiltration membranes can be enhanced by optimizing the properties of the substrates. Substrates with large pores are favorable to mass transfer but difficult to prepare highly selective polyamide layers on them by interfacial polymerization reaction. Here we employed porous two-dimensional (2D) aluminum-metal organic framework (Al-MOF) nanosheets to tune the commercial Nylon microfiltration substrate, and then prepared polyamide nanofiltration membranes by interfacial polymerization. 2D Al-MOF nanosheets were chosen for the tuning material except for their obvious advantages of easy synthesis and structural stability, the most important thing was their high porosity, which provided additional water transport channels. The morphologies as well as the separation properties were analyzed systematically. The best-performing Nylon-2.5 TFC membrane achieved an ultrahigh permeability (42.4 L m −2 h −1 bar −1 ), 13 times that of a control (PES-0) TFC membrane prepared on commercial PES substrate under the same interfacial polymerization conditions while ensuring the high rejection of Na 2 SO 4 (97.0%). Our work provides insights for optimizing substrate properties to prepare high-performance nanofiltration membranes.
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INORGANIC CHEMISTRY COMMUNICATIONS
·
2023
·
IF 3.8
Jun Yuan,Bo-Yuan Wang,Yi-Chao Zong,Fu-Qing Zhang
Fabricating efficient and stable photocatalysts with an improved photocatalytic property is necessary to decontaminate wastewater. Herein, the Ce-MOF@h-CeO 2 microspheres with a hollow structure are designed and synthesized. The unique hollow structure with the π-π conjugate organic ligand offers abundant reactive sites and a charge transfer channel, both enhancing the performance of photocatalysts. The SEM and TEM tests showed that the Ce-MOF@h-CeO 2 composite retains the hollow microsphere structure, and its diameter is about 600–900 nm. At the same time, the prepared composite showed excellent photocatalytic performance for the degradation of rhodamine B (RhB) under visible-light-driven, within 30 min dark adsorption and 150 min visible light, the degradation rate for RhB reached 95.5% of Ce-MOF/h-CeO 2 -2 composite, which were 7.17 and 4.46 times of h-CeO 2 and Ce-MOF, respectively. Furthermore, the composite of Ce-MOF@h-CeO 2 -2 exhibited a remarkable photocatalytic hydrogen evolution efficiency (3419.38 μmol‧g −1 ‧h −1 ), which was 15.16 and 10.91 times greater than that of the pure samples. This study provides helpful results of the metal–organic framework that can sensitize effectively the inorganic semiconductor materials for improving photocatalytic performance.
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INORGANIC CHEMISTRY
·
2023
·
IF 4.6
Xiao-Yi Liu,Qiu-Ying Lin,Han Fang,Xing-Wang Li,Shu-Ming Zhang,Mei-Hui Yu,Ze Chang
Metal–organic frameworks (MOFs) have been recognized as a potential platform for the development of tunable luminophores owing to their highly modulable structures and components. Herein, two MOF luminophores based on Cd(II) ions, 1,3,5-tri(4-pyridinyl)benzene (TPB), and 1,4-dicarboxybenzene (H2BDC) were constructed. The directed assembly of the metal ions and organic linkers results in [Cd2(BDC)2(TPB)(H2O)]·x(solvent) (MOF-1) featuring TPB-based blue fluorescence centered at 425 nm. By introducing anthracene as the structure directing agent (SDA) for assembly regulation, [Cd2(BDC)(TPB)2(NO3)2]·x(solvent) (MOF-2) was obtained, which reveals anthracene feeding-dependent high tunable emission in the 517–650 nm range. Detailed components, photophysical properties, and structural characteristics investigations of MOF-2 indicate the TPB and NO3– interactions as the origin of its redshifted emission compared with that of MOF-1. Furthermore, the fluorescence of MOF-2 was found to be regulatable by the anthracene feeding based on the SDA-determined crystallinity of the crystalline sample. All these results provided a unique example of the structural and fluorescence regulation of MOF luminophores.
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高影响因子
ANALYST
·
2023
·Vol. 148
·期 8
·1838-1847
·
IF 4.2
Zhidong Zhao,Yuan He,Xingrui Qi,Nian Li,Zijian He,Yufang Chen,Tao Jin
Electrochemical determination of synthetic opioids such as fentanyl is meaningful but still challenging no matter from a social or academic perspective. Herein, we report a series of novel electrocatalysts based on Fe-containing metal–organic frameworks and multi-walled carbon nanotubes (Fe-MOF/MWCNTs). The obtained Fe-MOF/MWCNT electrode materials all show ultrasensitivity on fentanyl determination. In particular, MOF-235/MWCNTs even exhibit an ultra-low limit of detection (LOD) of 0.03 μM with a wide linear range from 0.1 to 50 μM. Besides, this series of Fe-MOF/MWCNTs also displays excellent repeatability, selectivity, and stability. Moreover, they show good performance in real sample detection and achieve good recovery of 95.47%–102.41% and 96.62%–103.15% in blood and urine samples, respectively. This high performance in fentanyl determination is mainly contributed by the Fenton-like process and the adsorption function of the Fe-MOF. Therefore, these novel Fe-MOF/MWCNTs are promising electrocatalysts for point-of-care device fabrication and also have potential applications in fentanyl rapid test technology.
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JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2019
·
IF 3.571
Chunhua Li,Li Zhu,Weixia Yang,Xie He,Sheliang Zhao,Xiaoshuo Zhang,Wenzhi Tang,Jianlong Wang,Tianli Yue,Zhonghong Li
A fluorescent method for detection of tetracyclines (TCs) in milk was developed by using the NH2-MIL-53(Al) nanosensor synthesized via a one-pot hydrothermal method. The nanosensor had a crystalline nanoplates structure with rich groups of −NH2 and −COOH. The −NH2/–COOH of NH2-MIL-53(Al) reacted with the −CO–/–OH of TCs to form a complex. The electron of −NH2/–COOH from the NH2-BDC ligand transferred to the −CO–/–OH of TCs. −NH2 of the NH2-MIL-53(Al) interacted with the −CO–/–OH of TCs by hydrogen bonding. The quenching efficiency of the inner filter effect (IFE) was calculated to contribute 57–89%. The synergistic effect of photoinduced electron transfer (PET) and IFE account for fluorescence quenching. TCs were quantitatively detected in milk samples with recoveries of 85.15–112.13%; the results were in great accordance with high-performance liquid chromatography (HPLC) (P > 0.05), confirming the NH2-MIL-53(Al) nanosensor has potential applicability for the detection of TCs in food matrix.
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ACS Biomaterials Science & Engineering
·
2019
·
IF 4.511
Chao Wang,Xiaodan Jia,Wenyao Zhen,Mengchao Zhang,Xiue Jiang
In this article, a type of small-sized metal organic framework (MOF), MIL-101(Fe), as an intelligent delivery system was fabricated to load chemotherapy drug dihydroartemisinin (DHA) and photosensitizer methylene blue (MB). In addition, the Fe ions releasedfrom the MOFs in the tumor environment not only enhanced the curative effect of DHA but also catalyzed H2O2 to release O2, which further improved the photodynamic therapeutic effect of the nanocomposites. The nanocomposites can serve as a T2 magnetic resonance imaging contrast agent at the same time. The polylactic acid (PLA) and polyethylene glycol (PEG) were used to modify the surface of MOFs-MB-DHA to acquire the excellent controllable release of drugs and good biocompatibility to decrease the side effects for normal cells. All the results show remarkably increase of the therapeutic efficiency by synergistic chemo-photodynamic therapy. Thus, a smart multifunctional drug delivery system for diagnosis and therapy based on MOFs-MB-DHA@PLA@PEG was constructed for not only real-time imaging but also chemotherapy and photodynamic synergetic therapy to kill the tumor selectively, showing great potential for conquering the existing barrier in chemo-photodynamic synergetic therapy.
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NANO
·
2019
·
IF 1.293
Shuwen Gao,Yanwei Sui,Fuxiang Wei,Jiqiu Qi,Qingkun Meng,Yaojian Ren,Yezeng He
A series of nickel sulfides derived from the hexagonal Ni-MOF are vulcanized through adjusting the hydrothermal time and the thiourea concentration. Among all the obtained nickel sulfides, one sample Ni-S2-3, which inherits the Ni-MOF’s morphology, shows the best electrochemical performance with a remarkable specific capacitance of 1128 Fg − 1 at 1 Ag − 1 , a rate capacitance of 50% and a long cycle life of 74% retention after 5000 cycles. Furthermore, the asymmetrical supercapacitors (SCs) based on Ni-S2-3//AC exhibit a good supercapacitive performance with a maximum power density of 16.3 Wh kg − 1 at a power density of 800 Wkg − 1 . All these results indicate that vulcanizing Ni-MOF is an effective way to fabricate a superior electrode material with excellent electrochemical performance for SCs.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2017
·
IF 3.133
Fan Yang,Weiyang Li,Bohejin Tang
An amorphous metal-organic framework (aMOF) UiO-66 (Zr-MOF) was prepared directly from synthesis, different from experiments involving heating, pressure, and ball-milling by other researchers. The as-prepared amorphous UiO-66 has been successfully used as a supercapacitor electrode material, exhibiting a high specific capacitance (920 F g −1 at 10 mV s −1 ) superior to crystalline UiO-66. It has been verified that the material after reaction can still remain amorphous state by transmission electron microscopy (TEM). The capacitance of amorphous UiO-66 can maintain 610 F g −1 after 5000 cycles, suggesting its promising potential as a supercapacitor electrode material.
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