SEPARATION AND PURIFICATION TECHNOLOGY
·
2018
·
IF 3.927
Sheng Xu,Hao Zhang,Fen Yu,Xiaoxu Zhao,Yan Wang
In this study, dodecylamine-modified zeolitic imidazolate framework-90 (DLA-ZIF-90) particles with enhanced surface hydrophobicity are synthesized and incorporated into the polydimethylsiloxane (PDMS) matrix to fabricate novel PDMS/DLA-ZIF-90 mixed matrix membranes (MMMs) for ethanol recovery via pervaporation. The successful modification of ZIF-90 particles is investigated via various characterization techniques. The morphology and physicochemical properties of the PDMS/DLA-ZIF-90 MMMs are studied and characterized. Compared to the PDMS MMM with unmodified ZIF-90, PDMS/DLA-ZIF-90 MMM exhibits enhanced morphology homogeneity and separation performance, contributed by the flexible inner channels of ZIF-90-DLA particles with enhanced adsorption selectivity, as well as the improved affinity between ZIF-90-DLA particles and PDMS matrix. The MMM with 2.5 wt% DLA-ZIF-90 loading shows the best performance with the optimal flux of 99.5 g m −2 h −1 and corresponding separation factor of 15.1 at 60 °C. The effect of operation temperature is also studied. The performance benchmarking shows that PDMS/DLA-ZIF-90 MMM exhibits superior pervaporation performance to most other PDMS-based membranes, and may therefore shed valuable insights to the development of high-performance ZIF-based MMMs for organic recovery.
研究领域:
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Yahong Yuan,Jiale Wan,Zhuqing Zhao,Xiang Chen,Shuaibo Gao,Hongwei Xie,Huayi Yin
The utilization of kerf-loss silicon (KL-Si) waste as anode materials in lithium-ion batteries (LIBs) faces limitations of the rapid structural degradation during repeated charging/discharging. To overcome this limitation, 3D carbon-coated Si is constructed to buffer the Si volume expansion caused by the lithiation, while simultaneously forming a robust conductive network. Meanwhile, the well-dispersed porous carbon (C) shell, doped with suitable heteroatoms, plays a pivotal role in facilitating rapid ion transfer rates. In addition, a cobalt (Co) and nitrogen (N)-doped C shell is employed to encapsulate KL-Si, aimed at enhancing its lithium (Li) storage performances. The electrochemical performance of KL-Si@C-ZIF/N/Co composites, synthesized through the encapsulation of KL-Si with a metal-organic framework (MOF) structure (ZIF-90) followed by heat treatment. The resulting composites exhibit an outstanding reversible capacity of 981 mAh g −1 and an impressive capacity retention of 81.9% at 2 A g −1 even after 350 cycles. This paper presents a promising method for maximizing the value-added utilization of KL-Si and reveals the advantages of MOF-derived porous C shell in accommodating the inherent volume expansion of Si-based anodes.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Zemin Ji,Zijin Zhang,Weifeng Lv,Yanyao Shi,Kai Wang,Shumin Ni,Hongchao Ma,Meiwen Cao
Capturing CO 2 using natural carbonic anhydrase (CA) has advantages of environmental friendliness , low energy consumption, renewable and no secondary pollution. However, the high cost, poor stability and low reusability of free CA under harsh conditions limit its industrial applications. Great efforts have been devoted to developing CA mimetic nanozymes to solve these problems. In this work, ZIF-90-based nanoparticles were prepared to mimic the active center of natural CA. The excellent CA-like catalytic activity of ZIF-90 nanoparticles was confirmed by using hydrolysis of p-nitrophenyl acetate (p-NPA) as the model reaction. Moreover, modifying ZIF-90 with monoethanolamine (MEA) could further improve its affinity for CO 2 , which in turn enhances the CO 2 uptake capacity. Moreover, the hydrolysis of CO 2 was also investigated through the pH decrease of the reaction solution and the results indicated that CO 2 hydration and exchange were remarkably enhanced with the aid of ZIF-90 or ZIF-90 @MEA. This approach is facile and costless, which sheds light on the development of novel catalysts for industrial CO 2 capture.
研究领域:
材料科学
·
环境科学
·
催化
✓ 已验证
产品关联
DOI
高影响因子
ACS Sensors
·
2020
·
IF 7.333
Zhihao Wu,Huan Yang,Shuang Pan,Hui Liu,Xiaoli Hu
Ratiometric fluorescence has drawn extensive attention owing to its self-calibration property. However, it is difficult to obtain appropriate fluorescent materials that can be excited under one excitation and possess well-resolved signals simultaneously. In this work, with the optical properties of the fluorescence of carbon dots (CDs) and the second-order scattering (SOS) of ZIF-90 (zeolitic imidazole frameworks-90) nanoparticles, the synthesized CDs@ZIF-90 can be applied to phosphate (PO43–) ratiometric detection. The fluorescence of CDs is greatly suppressed through encapsulating CDs into ZIF-90. Nevertheless, the SOS is quite obvious due to the high scattering intensity of large size ZIF-90. The competitive coordination between PO43– and the metal node of ZIF-90 decomposes CDs@ZIF-90, leading to the restoration of fluorescence and the diminution of SOS. On the basis of the PO43–-induced ZIF-90 decomposition and CD release, a novel method for PO43– ratiometric detection is developed through the dual-signal response of the fluorescence scattering. Under the optimal condition, the method shows a linear range from 1.0 to 50.0 μmol L–1 with a detection limit of 0.23 μmol L–1. Furthermore, the probes are employed to assess PO43– in practical aqueous samples successfully. Compared with the traditional approach, which only records fluorescence signals, the method reported here provides a new strategy to design ratiometric sensors by fluorescence and scattering.
研究领域:
分析化学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Today Bio
·
2021
·
IF 7.348
H. Li,A. Kang,B. An,L.-Y. Chou,F.-K. Shieh,C.-K. Tsung,C. Zhong
Exploiting metal-organic frameworks (MOFs) as selectively permeable shelters for encapsulating engineered cells to form hybrid living materials has attracted increasing attention in recent years. Optimizing the synthesis process to improve encapsulation efficiency (EE) is critical for further technological development and applications. Here, using ZIF-90 and genetically engineered Escherichia coli (E. coli) as a demo, we fabricated E. coli @ZIF-90 living composites in which E. coli cells were encapsulated in ZIF-90 crystals. We illustrated that ZIF-90 could serve as a protective porous cage for cells to shield against toxic bactericides including benzaldehyde, cinnamaldehyde, and kanamycin. Notably, the E. coli cells remained alive and could self-reproduce after removing the ZIF-90 crystal cages in ethylenediaminetetraacetic acid, suggesting a feasible route for protecting and prolonging the lifespan of bacterial cells. Moreover, an aqueous multiple-step deposition approach was developed to improve EE of the E. coli @ZIF-90 composites: the EE increased to 61.9 ± 5.2%, in contrast with the efficiency of the traditional method (21.3 ± 4.4%) prepared with PBS buffer. In short, we develop a simple yet viable strategy to manufacture MOF-based living hybrid materials that promise new applications across diverse fields.
研究领域:
合成生物学
·
材料科学
·
微生物学
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2019
·
IF 6.393
Xin Xu,Danyang Nan,Huan Yang,Shuang Pan,Hui Liu,Xiaoli Hu
Quercetin is a nature polyphenolic flavonoid compound, which act as antioxidant and radical scavengers in cells. However, such activities strongly depend on the intracellular microenvironment, which has become an urgency to develop a more stable method for better use of quercetin. Herein, we report a facile approach to fabricate Quercetin@ZIF-90 (QZ) with a narrow size distribution about 100 nm, the synthesized QZ exhibits considerable antioxidant and radical scavenger ability comparing to bare quercetin. Moreover, the experiment results indicated that QZ was sensitive to adenosine 5′-triphosphate (ATP) and pH, thus QZ was applied as a novel antioxidant for the determination of ATP. In brief, though 3, 3′, 5, 5′-tetramethylbenzidine (TMB) could be oxidized to blue cation radical complex by oxidase-like BSA-MnO 2 nanosheets (MNs) at neutral pH, QZ could sufficiently protect against MNs-induced TMB cation radicals reaction, which means no obvious color change in MNs-TMB system after the addition of QZ. However, ATP could induced collapse of QZ due to the interaction between ATP and Zn 2+ allowing the release of quercetin from ZIF-90 shell, and the inhibition effect to the MNs was weakened, leading to the recovery of blue oxTMB. In this way, a novel “Off-On” colorimetric method for ATP sensing was established, and the method displayed a good linear relationship ranging from 2.0 μ mol L −1 to 80.0 μ mol L −1 . The reported strategy is also capable of ATP sensing in MCF-7 cell lysates, which illustrated our method exhibited high sensitivity and selectivity.
研究领域:
生物化学
·
分析化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2024
·Vol. 14
·期 11
·975
·
IF 4.4
Shuilan LYU,Xin Zhang,Sheng Huang,Shuanjin Wang,Min Xiao,Dongmei Han,Yuezhong Meng
Lithium metal batteries (LMBs) are anticipated to meet the demand for high energy density, but the growth of lithium dendrites seriously hinders its practical application. Herein, we constructed a kind of composite separator (ZIF-90@PP) consisting of zeolite imidazole framework-90 (ZIF-90) and polypropylene (PP) to promote the uniform deposition of Li+and inhibit the growth of lithium dendrites. The aldehyde groups interacting with TFSI−and the nitrogen-containing negative groups attracting Li+of ZIF-90 can facilitate the dissociation of LiTFSI to release more Li+, thus alleviating the influence of space charge near the electrode surface and accelerating the transfer of Li+. Not only does the excellent electrolyte wettability of ZIF-90 enhance the electrolyte retention capacity of the separator, but the orderly nano-channels in ZIF-90 also restrict the free migration of anions and homogenize the distribution of Li+. Consequently, the functional separator achieves a long-term stable Li plating/stripping cycling for over 780 h at 2 mA cm−2. Moreover, an impressive average coulombic efficiency of 98.67% at 0.5 C after 300 cycles is realized by Li || LFP full cells based on ZIF-90@PP with a capacity retention rate of 71.22%. The high-rate and long cycling performance of the modified Li || LFP cells further demonstrates the advantages of the ZIF-90@PP composite separator.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Composites and Hybrid Materials
·
2021
·Vol. 5
·期 1
·91-103
·
IF 5.693
Zhu Tengyang,Zhao Xiaoxu,Yi Ming,Xu Sheng,Wang Yan
To eliminate the interfacial defects between polymeric matrix and inorganic fillers in hybrid membranes, various strategies have been proposed by modifying membrane materials or optimizing membrane formation process. In this work, a ternary cross-linked PVA-APTES-ZIF-90 (PVA, poly(vinyl alcohol); APTES, 3-aminopropyltriethoxysilane; ZIF-90, zeolitic imidazolate framework-90) membrane was developed to eliminate interfacial defects between PVA and ZIF-90 for enhanced ethanol dehydration performance, where APTES served as a covalently linked bridge to cross-link PVA and ZIF-90 simultaneously. The morphologies and physicochemical properties of the resultant membranes were characterized by various characterization techniques. Moreover, we also explored the effects of [ZIF-90]/[APTES] mole ratio and [ZIF-90]/[APTES] loading on the separation performance of the trinity membranes. The results indicated that ZIF-90 particles showed better dispersion and compatibility in PVA-APTES-ZIF-90 trinity membranes than in PVA/ZIF-90 hybrid membrane, attributed to the ternary cross-linking among PVA, APTES, and ZIF-90. Compared with pristine PVA membrane, PVA-APTES-ZIF-90 trinity membranes showed stronger anti-swelling and mechanical properties, as well as more excellent separation performance, which resulted from the incorporation of cross-linker APTES and ZIF-90 particles. The separation factor of the optimal PVA-APTES-ZIF-90 trinity membrane was improved by 215.4%, up to 552, accompanied by a total flux of 82 g/m 2 h. Ternary cross-linking among cross-linker, inorganic filler, and polymeric chain is therefore believed to be a feasible strategy in preparing polymeric-based hybrid membranes with high separation performance. Graphical abstract Summary: A novel ternary cross-linked hybrid membrane with APTES as co-cross-linkers of ZIF-90 and PVA for efficient ethanol dehydration
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
IEEE SENSORS JOURNAL
·
2024
·Vol. 24
·期 5
·6078-6084
·
IF 4.3
Zhitao Duan,Fangrong Hu,Shangjun Lin,Jie Chen,Longhui Zhang,Mingzhu Jiang
Acetone gas can give rise to serious harm to the ecological environment and human health. In addition, acetone gas in the human exhaled breath can be used as an important biomarker for diabetes, lung cancer, lipid peroxidation, and other diseases. Therefore, detection of trace acetone gas is important for environment monitoring and disease diagnosis. Here, a four-split-ring-resonator terahertz (THz) metasurface sensor is proposed to detect trace acetone gas with high sensitivity, and the sample is fabricated using micromachining process. A new metal–organic framework (MOF) material zeolitic imidazolate framework-90 (ZIF-90) is modified on the surface of the sensor to improve its specificity for acetone gas. When the concentration increases from 10 to 100 ppm, the frequency shift of the sensor shows good linearity with the concentration. The minimum measurable concentration is 10 ppm, and the sensitivity is 0.1 GHz/ppm (or 10 ppm/GHz). This work paves a way for developing novel biosensors with high sensitivity and specificity, and it has potential applications in the fields of trace gas detection and disease diagnosis at early stage.
研究领域:
环境科学
·
医学诊断
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2021
·
IF 10.588
Douchao Mei,Lijia Liu,Huan Li,Yudan Wang,Fuqiu Ma,Chunhong Zhang,Hongxing Dong
Herein, a dual-function Zeolitic Imidazole Frameworks (ZIFs) ZIF-90 grafted with malononitrile by Knoevenagel reaction and following with an amidoximation reaction to form an efficient U (VI) adsorbent ( ZIF-90-AO ). The strong chelation power of amidoxime groups (AO) with uranium and ZIF-90 ’s mesoporous structure afforded ZIF-90-AO high maximum uranium adsorption capacity of 468.3 mg/g (pH = 5). In addition, the factors affecting uranium adsorption process were investigated by a batch of adsorption tests under different adsorption conditions. ZIF-90-AO displayed good selectivity to UO 2 2+ in the solution containing multiple co-existing ions and good regeneration property. More importantly, ZIF-90-AO showed excellent antimicrobial property against both E. coli and S. aureus . Therefore, ZIF-90-AO is a U-adsorbent with great application value for removing U (VI) from wastewater due to the high U (VI) adsorption capacity in weak acid condition and good anti-biofouling properties.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
DOI
PubMed
高影响因子
MOLECULES
·
2025
·Vol. 30
·期 8
·1826
·
IF 4.6
Na Zhou,Xueli Wu,Shaoxia Wang,Jianfei Qu,Yang Tan,Chuanlei Luan,Xiuli Yin,Xuran Wu,Xuming Zhuang
In this work, amino-modified ZIF-90 (NH2-ZIF-90) was prepared by using butylamine as a modifier, and its effectiveness in adsorbing Au(III) from environmental samples was investigated. The morphology and structure of NH2-ZIF-90 were analyzed via SEM, XRD, FT-IR, and XPS. Optimal adsorption occurred after 12 h of shaking in a pH = 5 aqueous solution with 2 mg mL−1NH2-ZIF-90. The adsorption kinetics conformed to a pseudo-second-order model, and the equilibrium data fit the Freundlich isotherm model well. Finally, NH2-ZIF-90 was successfully used in lake water and tap water samples for Au(III) adsorption, with recovery rates ranging from 81.0% to 93.3%. This study presents a novel approach for addressing Au(III) adsorption challenges.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2023
·
IF 5.2
Jian Luo,Yu Ma,Yanfeng Liu,Xiaojing Huang,Ahui Sun,Cong Wang,Weiting Yang,Qinhe Pan
Sustainable, environmentally friendly and economically viable treatment of marine oil spills attracts a great attention. For the first time, composites with highly durable structure were prepared for continuous oil/water separation by in situ growth of zeolitic imidazole framework ZIF-90 on a porous melamine sponge (MS). First, a thin layer of metal hydroxide (Zn-LDH) was introduced on the inner wall of MS and ZIF-90 particles were loaded onto the sponge fibers by homologous induction to obtain the ZIF-90/MS composite. The thin Zn-LDH layer greatly enhanced the anchoring force of ZIF-90 on the MS skeleton to effectively avoid the crystals from piling up together. The resulting ZIF-90/MS was modified in situ with octadecylamine (ODA) to give a superhydrophobic ODA-ZIF-90/MS composite with a water contact angle (WCA) of 154 o , which demonstrated great oil adsorption capacity (24–63 g/g) and excellent recoverability (98.7% absorption retention after 50 cycles). With the assistance of a pump drive, continuous separation of oil spill contaminants from actual seawater can be achieved with fluxes of 13839 g. h −1 . g −1 and 13513 g. h −1 . g −1 for hexane and gasoline, respectively, without any water adsorption. The highly durable ODA-ZIF-90/MS composite with puncture structure showed excellent cycling performance in oil/water separation with less than 1% ODA-ZIF-90 spillage after 50 squeeze desorption cycles. This novel integrated ODA-ZIF-90/MS composite demonstrates a promising strategy for large-scale of oil spill cleanup.
研究领域:
材料科学
·
环境科学
✓ 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）