Inorganic Chemistry Frontiers
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2025
·
IF 6.4
Jiayu Zheng,Longxiao Zhou,Qiufen Liu,Senwei Wu,Yuting Peng,Xiujian Zhao,Shouqin Tian
Ratiometric optical thermometry has emerged as a vital platform for non-contact temperature monitoring in industrial and scientific applications, demanding sensors with high sensitivity, non-invasiveness, and spatial resolution. Although zeolitic imidazolate framework-8 (ZIF-8) possesses attractive thermal stability and structural tunability, its limited luminescence intensity hinders practical thermometric applications. Meanwhile, ZIF-L, a two-dimensional (2D) polymorph of ZIF-8 with identical ligands, remains unexplored for temperature sensing. Herein, we propose a dual-modulation strategy synergizing lanthanide valence engineering with MOF phase control to develop a multi-emission center Eu3+/Eu2+ co-doped ZIF-L film (Eu/ZIF-L). By introducing Eu3+ into ZIF-8 precursors, the partial reduction of Eu3+ to Eu2+ under thermal treatment triggers a structural evolution from 3D ZIF-8 to 2D ZIF-L. The resultant Eu/ZIF-L exhibits dual emission peaks at 450 nm (Eu2+) and 495 nm (ligand-centered), with their intensity ratio (I495/I450) demonstrating remarkable linear temperature dependence over 296–373 K and achieving a relative sensitivity of 1.95% K−1. This work pioneers the integration of valence-state manipulation and MOF phase transition for thermometric optimization, providing a novel paradigm to design advanced ratiometric MOF thermometers for industrial thermal management.
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高影响因子
Journal of Materials Chemistry B
·
2021
·Vol. 9
·期 43
·9031-9040
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IF 6.331
Jilin Zheng,Peng Zhao,Shiying Zhou,Sha Chen,Yi Liang,Fengchun Tian,Jun Zhou,Danqun Huo,Changjun Hou
Integrating metal–organic frameworks (MOFs) of different components or structures together and exploiting them as electrochemical sensors for electrochemical sensing has aroused great interest. Furthermore, the incorporation of noble metals with MOFs is conducive to the improvement of catalytic performance. In this work, Pd@UiO-66-on-ZIF-L nanomaterials were successfully synthesised onto a self-supported flexible carbon cloth (Pd@UiO-66-on-ZIF-L/CC) through a novel strategy called MOF-on-MOF. Then, Au nanoparticles were electrodeposited onto Pd@UiO-66-on-ZIF-L/CC to obtain Au–Pd@UiO-66-on-ZIF-L/CC, which can serve as an excellent electrocatalyst for the reduction of hydrogen peroxide (H2O2). The obtained flower-like Pd@UiO-66-on-ZIF-L/CC hybrid MOF changes the structure of the monomeric MOF alone and adds more attachment sites. The synergy of the bimetals greatly improved the catalytic performance of the as-developed sensor. Electrochemical experiment results show that the proposed sensor based on Au–Pd@UiO-66-on-ZIF-L/CC has an extended linear range from 1 μM to 19.6 mM with a sensitivity of 390 μA mM−1 cm−2, and a low limit of detection (LOD) of 21.2 nM (S/N = 3). Moreover, it has good anti-interference, reproducibility, repeatability and excellent stability. Furthermore, the real-time in situ detection of H2O2 secreted from human adenocarcinomic alveolar basal epithelial cells (A549 cells) was achieved by culturing cells on Au–Pd@UiO-66-on-ZIF-L/CC, which indicates the potential of the sensor for applications in cancer pathology. Both the synthesis strategy and the sensor design provide new methods and ideas for the production of ultrasensitive H2O2 electrochemical sensors.
研究领域:
材料科学
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电化学
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生物传感器
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癌症病理学
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PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2021
·
IF 7.312
Shengnan Li,Jiwei Jiang,Shih-Hsin Ho,Fengxiang Li,Wenlu Zeng
Microbial fuel cells (MFCs) systems are up-and-coming technologies for renewable energy production and wastewater treatment simultaneously. However, the inactive oxygen reduction reaction (ORR) on the cathode markedly limits the functioning of MFCs. Therefore, the cathodic catalyst is one of the crucial components in MFCs, this paper presents the removal of the antibiotic sulfamethoxazole (SMX) from water using single-chamber MFCs with Fe-Co-C/N as electrocatalysis. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS) were conducted to illustrate the structure and elemental composition of Fe-Co-C/N. The results obtained by the rotating disk electrode (RDE) method showed an extraordinary electrocatalytic activity of Fe-Co-C/N towards ORR in O 2 -saturated 0.1 M KOH. Furthermore, the degradation of SMX by MFCs that applied modified electrodes was also studied. The results demonstrated that using Fe-Co-C/N as air–cathode catalysts exhibited the degradation efficiency of 61.64% towards 6 mg/L SMX with 48 h. In addition, cyclic voltammetry (CV) analysis showed that the peak current of the biofilm in the PBS solution (without adding SMX) was significantly higher than that of the solution with SMX addition at 6, 18, and 30 mg/L. Moreover, MFC performance was also evaluated by measuring electrochemical impedance spectroscopy (EIS), power generation, and polarization curves. Last but not least, the high-throughput sequencing-based metagenomic technique was used to explore the microbial community diversity, functional genes in MFCs, and fate of ARGs. SMX addition raised the abundances of sul1 and sul2 as resistance genes, which enhanced microbial resistance, the coping capability of SMX toxicity, and the adjustment of the damage from SMX. The obtained results suggest that Fe-Co-C/N is a feasible catalyst for MFC cathodes owing to its satisfactory performance in terms of SMX wastewater treatment and power production.
研究领域:
环境科学
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电化学
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废水处理
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微生物学
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催化
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材料科学
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高影响因子
CRYSTENGCOMM
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2019
·Vol. 21
·期 43
·6536-6544
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IF 3.382
Shaozhen Wang,Biao Zang,Yueyue Chang,Hongqi Chen
Flower-shaped zeolitic imidazolate framework-L (ZIF-L) nanostructures were synthesized by a coordination control method. The various factors influencing the growth of the flower-shaped ZIF-L include the quantity of H2O2, reaction time and temperature, and the formation process and the mechanism were investigated. The results showed that H2O2 plays an induction role in the growth of crystal nuclei. Using the cleaning regulator, H2O2, flower-like ZIF-L with a high yield was produced in a short time at room temperature, and the fluorescence enhancement products were prepared at high temperature. Meanwhile, the CO2 adsorption capacity of flower-shaped ZIF-L was 1.15 mmol g−1 at room temperature and 1 bar, which was higher than that of the two-dimensional ZIF-L. This outstanding CO2 capture performance is attributed primarily to the hierarchical flower-shaped micro/nanostructure which is resistant to leaf aggregation and stacking, thus increasing the CO2 adsorption capability. These results may open a new avenue for the development of ZIF-L nanocrystals with a controlled morphology, which will be widely applied in luminescence analysis, gas sensing, separation and storage.
研究领域:
材料科学
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环境科学
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高影响因子
2D Materials
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2019
·Vol. 7
·期 1
·015001
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IF 7.343
Hong Jiang,Na Zhou,Ze-Xian Low,Yefei Liu,Weihong Xing,Huanting Wang,Rizhi Chen
A novel sheet-on-sheet Pd-ZIF/GO (Pd/ZG) catalyst is synthesized by constructing ZIF-L with GO and PVP-Pd nanoparticles (NPs) via a facile in situ method. The in situ introduction of GO promotes the formation of ZIF-L, leading to a higher yield of Pd/ZG, about three times higher than Pd/ZIF-L. We ascribe this to the possible interaction of the oxygen-containing groups on the GO surface with the Zn2+ cations in ZIF nodes and the PVP wrapped on the Pd surface, resulting in the formation of sheet-on-sheet Pd-ZIF/GO with good Pd dispersion. The Pd/ZG shows superior catalytic performance in the reduction of nitroarenes, and its turnover frequency (TOF) value is five times higher than Pd/ZIF-L. The superior catalytic activity can be ascribed to the uniformly dispersed tiny Pd NPs between ZIF-L and GO nanosheets, fast mass transfer in porous structure, and excellent electron conductivity due to strong interactions among ZIF-L, GO and PVP-Pd. These findings provide new opportunities for rational design of catalysts and their applications in the reduction of nitroarenes, important processes for industrial synthesis of pesticides, dyes, medicines, etc.
研究领域:
材料科学
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催化化学
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工业化学
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高影响因子
ACS Biomaterials Science & Engineering
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2019
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IF 4.511
Zexun Liu,Qiao Wu,Jie He,Frank Vriesekoop,Hao Liang
Zeolitic imidazolate framework-L (ZIF-L) could effectively improve the stability, controlled release, and anticancer activity of natural hydrophobicity drugs in drug delivery systems (DDSs). A simple and universal strategy was developed to prepare the curcumin-loaded ZIF-L (CCM@ZIF-L) by the antisolvent coprecipitation method, which was different from the traditional approaches. The microcrystal molecules of curcumin were used as the core of ZIF-L growth to form CCM@ZIF-L, which has a very high drug encapsulation efficiency of 98.21% and a regular leaf or cruciate flower-like structure. The formation of CCM@ZIF-L with a distinct composite structure was supported by scanning electron microscopy, transmission electron microscopy, Fourier-transform infrared, powder X-ray diffraction, and zeta-potential. Because of the protective effect of ZIF-L, CCM@ZIF-L exhibited excellent stability and about a 5-fold increase in temperature stability over free curcumin. CCM@ZIF-L exhibited controlled drug release behavior in simulated in vitro tumor microenvironments (almost 81.2% drug release over a period of 72 h). Furthermore, confocal laser scanning microscopy results and cytotoxicity experiments confirmed that the encapsulated curcumin showed a significant improvement in cellular uptake and anticancer activity against A549 cancer cells. Moreover, the curcumin encapsulated in ZIF-L exhibited remarkable cellular antioxidant activity based on MGC-803 cell models. This work presents a novel approach to solve the drug loading problem by employing ZIF-L and exhibits enormous potential of ZIF-L as an effective DDS in cancer treatments.
研究领域:
材料科学
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药学
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生物医学工程
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DOI
PubMed
高影响因子
AICHE JOURNAL
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2019
·Vol. 65
·期 6
·e16596
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IF 3.463
Xuke Zhang,Hui Li,Weizhen Miao,Qin Shen,Jing Wang,Donglai Peng,Jindun Liu,Yatao Zhang
The novel functional superwettable materials for high-efficiency oil/water separation are urgently required due to oil pollution in water body caused by oil tanker accidents, seabed oil production, and oil from refineries and petrochemical plants. Here, the superhydrophobic and superoleophilic zeolitic imidazolate framework-L (ZIF-L) mesh with antimicrobial effect was successfully fabricated by in-situ growth, composed of vertically ZIF-L with micro-/nanodagger-like structure and exhibited the water contact angle of 155.4 ± 1.8° and the oil contact angle of 0° in air. Furthermore, ZIF-L was verified to have an excellent antimicrobial activity, which endowed ZIF-L mesh with good antimicrobial performance. ZIF-L mesh provided a permeation flux with 1.75 × 10 5 L m −2 hr −1 and 99.7% separation efficiency after 10 cycles operations for water mixtures with isooctane and presented optimal stability. Accordingly, the results demonstrated that ZIF-L as a new material shows an attractive applied promise for oil/water separation in industry.
研究领域:
材料科学
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环境科学
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生物学
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2022
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IF 7.139
Chao Chen,Xiaohua Deng,Yingjie Deng,Lu An,Yijie Deng,Yuying Zheng,Dai Dang,Xu Yang
Developing high-efficiency bifunctional materials for electro-catalysis and supercapacitors are urgently needed but challenging. Herein, we develop a self-supporting Co–Ni LDH electrode prepared by in-situ growing ZIF-L(Co)@ZIF-L(Co, Ni) on carbon paper followed by a pseudomorphic transformation. The optimized Co–Ni LDH/carbon paper electrodes (CN-2/CP) exhibit excellent electrochemical activity and stability in oxygen evolution reactions (OER) and supercapacitors. The CN-2/CP electrode displays a low overpotential of 230 mV at 10 mA cm −2 and superior stability at 40-h chronopotentiometry for OER. For supercapacitor, the CN-2/CP electrode delivers a high specific capacitance of 1346 F g −1 at 1 A g −1 and maintains a capacitance of 88.5% after 7000 charge/discharge cycles at 20 A g −1 . Based on the physical and chemical characterization results, the high performance originates from the in-situ electrochemical conversion of metal hydroxide , improved conductivity, fast charge transfer at the interface and unique layered cross morphology providing more active sites.
研究领域:
材料科学
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电化学
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Zixiu Chen,Xiaoyan Xu,Wei Li,Lingling Feng,Keliang Wang,Shenggang Wang,Qufu Wei,Hui Qiao
To address the limitations of current superhydrophobic materials for oil–water separation, such as the use of non-environmentally friendly raw materials, non-degradability and poor coating durability. This study presents the design of a superhydrophobic fabric that is robust, versatile, and free from fluorine. Inspired by the microstructure of lotus leaf mastoids, the zeolitic imidazolate framework nanoleaves (ZIF-L)/polymethyl methacrylate (PMMA)/polydimethylsiloxane (PDMS) superhydrophobic cotton fabric is prepared by introducing carboxyl groups onto the cotton fabric surface via a diazonium chemical method, followed by in-situ growth of crisscrossed metal–organic frameworks (MOF) structure ZIF-L, and subsequent modification with low surface energy substances PDMS. PMMA was bonded bind to the ZIF-L through hydrogen bonds and van der Waals forces, these interactions significantly improve the resistance to washing and abrasion. The ZIF-L/PMMA/PDMS superhydrophobic cotton fabric exhibits an exceptional water contact angle of 162.2° and a remarkably low sliding angle of only 5.6°. In assessments of durability, the constructed fabric displays exceptional durability, enduring 30 cycles of washing and abrasion without significant degradation of its superhydrophobic properties. It also demonstrates robust anti-fouling and self-cleaning characteristics, alongside outstanding oil–water separation efficiency of over 98 %, and a 95 % efficiency in water-in-oil emulsion separation, coupled with notable reusability. The ZIF-L/PMMA/PDMS superhydrophobic cotton fabric also exhibits superior anti-icing performance as water droplets formed an insulating air layer upon contact with the superhydrophobic surface, thereby reducing heat transfer. Its displays a low ice adhesion strength of 39 kPa at −25 °C, endured over 30 freeze–thaw cycle, and delayed ice formation for more than 120 s at −25 °C. The diminished adhesion strength as a result of the increase of air layer between the water and the superhydrophobic cotton, high surface roughness and PDMS modification, which minimizes ice adhesion.
研究领域:
材料科学
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环境科学
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化学工程
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高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
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2018
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IF 6.653
Shihan Zhang,Mine Du,Peijing Shao,Lidong Wang,Jiexu Ye,Jun Chen,Jianmeng Chen
Carbonic anhydrase (CA) enzyme-based absorption technology for CO2 capture has been intensively investigated. The main issue related to this novel technology is the activity and stability of the CA enzyme under the typical flue gas conditions. To address this issue, CA enzymes were embedded into zeolitic imidazolate framework (ZIF-L) nanoparticles to synthesize a novel CA/ZIF-L-1 composite. The composite exhibited a superior apparent catalytic activity (1.5 times higher) for CO2 absorption compared with their free counterparts, which was due to the synergistic enhancement of CO2 adsorption by support ZIF-L and enzymatic catalysis. The analyses of Fourier transform infrared spectroscopy and circular dichroism revealed that the CA enzyme’s secondary structure was not significantly varied during the CA/ZIF-L-1 preparation, resulting in a high enzyme activity retention. Moreover, the CA/ZIF-L-1 possessed a high thermal stability and reusability due to the structural rigidity and confinement of ZIF-L scaffolds. Compared with the free enzyme, its thermal stability was improved by approximately 100% at 40 °C. After six cycles of reuse, CA/ZIF-L-1 still retained a relative activity of 134%. Therefore, the CA/ZIF-L-1 can be a good candidate to promote the CO2 capture in industrial application.
研究领域:
生物化学
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材料科学
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环境科学
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DOI
PubMed
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
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2015
·
IF 3.453
Songlin Xue,Hong Jiang,Zhaoxiang Zhong,Ze-Xian Low,Rizhi Chen,Weihong Xing
A new Pd@ZIF-L hybrid catalyst having a unique crosshair-star shape with a size of about 20 μm was synthesized, in which a two-dimensional layered zeolitic imidazolate framework-L (ZIF-L) was used as a support to immobilize palladium nanoparticles via an assembly method. The hybrid catalyst with unique cushion-shaped cavities between layers with a size of 6.64 Å can be used for the diffusion of specific reactants not achievable by other ZIF systems such as ZIF-8. The crystal structure and morphology of Pd@ZIF-L are strongly dependent on the synthesis conditions. Palladium nanoparticles with an average size of 3 nm are homogeneously encapsulated in the ZIF-L crystals. The as-synthesized Pd@ZIF-L catalyst favors the conversion of alkenes with larger molecular sizes, and exhibits excellent molecule-size-selectivity and anti-leaching performance.
研究领域:
材料科学
·
催化化学
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高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2019
·
IF 2.781
Mengjue Cao,Yi Feng,Qian Chen,Pengcheng Zhang,Shihang Guo,Jianfeng Yao
In this study, melamine sponge (MS) is modified by in-situ growth of leaf-like Co-ZIF-L without the addition of additives or surfactants . Such modified MS shows good underwater superoleophobicity because of the unique pore structure and highly rough surface of MS@Co-ZIF-L. Compared to the pristine MS, the water-wetted MS@Co-ZIF-L exhibits excellent water-oil separation for various oils (the separation efficiencies are higher than 99.2%) with good long-term stability (no decrease in flux and separation efficiency after 60 cycles of separation). Moreover, MS@Co-ZIF-L is highly effective to treat oil-water emulsions. Besides the excellent separation performance, due to the outstanding mechanical properties, MS@Co-ZIF-L can be shaped into various configurations such as membranes, filters, adsorbing foams or other forms for the oil/water separation in various situations.
研究领域:
材料科学
·
环境科学
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DOI
高影响因子
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