APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Liming Zhao,Carl Redshaw,Kuixing Ding,Pengyue Zhang,Bin Chen,Zhirong Chen,Jiugang Hu,Haohong Li
Metal organic frameworks (MOFs) contain ordered pores capable of encapsulating varied types of guests and provide a platform to expand the flexibility and versatility of the host-guest composites. Herein, by encapsulating CH 3 NH 3 PbBr 3 NP S into Ln-MOFs (Ln = La, Nd, Pr, Sm), four CH 3 NH 3 PbBr 3 @Ln-MOFs host-guest composites were fabricated and served as a bifunctional platform. The temperature-dependent luminescence properties of the CH 3 NH 3 PbBr 3 @Ln-MOFs were explored and the results revealed their tuneable green luminescence performance. In particular, the CH 3 NH 3 PbBr 3 @Sm-MOF exhibits a variety of colours from green to blue to purple and an excellent quantum yield of 0.98. The photocurrent responses and theoretical calculations reveal the enhancement mechanism of CH 3 NH 3 PbBr 3 on charge-hole separation owing to its unique host-guest synergy. Moreover, the CH 3 NH 3 PbBr 3 @Sm-MOF exhibits the excellent electrical bi-stability with a high ON/OFF ratio of 10 4 . Hence, the CH 3 NH 3 PbBr 3 @Ln-MOFs host-guest composites are promising candidates for a new generation of photovoltaic, light-emitting, and switching memories devices.
研究领域:
材料科学
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光电子学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
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IF 9
Gao Xiao,Jun Zhang,Mingzhu Zheng,Liyin Chen,Samson Afewerki,Manna Dai,Junling Guo
Organic micropollutants in wastewater containing arsanilic acid (p-ASA) can undergo a transformation into a highly toxic inorganic arsenic, impacting both the environment and human health. Adsorption materials such as Metal-organic frameworks (MOFs) have attracted great interest, yet their production methods are often complex, costly, and time-consuming, hindering large-scale production. We introduces an innovative, high-throughput microfluidic magnifiable manufacturing approach to expedite MOFs creation, enabling rapid, continuous, and parallel expandable scalable production of MOFs with a uniform microstructure in mere minutes, significantly outpacing the traditional, intermittently operated hydrothermal synthesis. The microfluidic-generated microstructured MF-UIO-66 has better organic arsenic adsorption capacity (333.3 mg/g), and maintained an 89.2 % effectiveness even after four cycles of reuse without generating harmful by-products. When compared to UIO-66 produced via conventional hydrothermal methods, the microfluidically synthesized MF-UIO-66 showcases not only a faster and more effective removal of varying concentrations of organic arsenic but also enhanced chemical stability and longevity. The novel microfluidic fabrication strategy holds great potential for the industrial-scale production of MF-UIO-66 at reduced costs and increased yields.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2024
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IF 4.4
Fuhua Wei,Fang Lan,Qinhui Ren,Hongliang Chen,Yutao Zhang,Zhao Liang
The Y/Cr-MOFs were synthesized via solvothermal treatment using 1, 3, 5-benzoic acid as the organic ligand and yttrium acetate hydrate and chromium acetate as the metal ions. The structures of the prepared Y/Cr-MOFs were characterized using FT-IR, XRD, TG, and SEM techniques. These characterized Y/Cr-MOFs were employed to investigate the adsorption efficiency of minocycline. Experimental findings indicate that minocycline adsorption by Y/Cr-MOFs follows both the second-order kinetic model and Freundlich isotherm. Within a span of 5 h, up to 90.4 % of minocycline can be adsorbed by Y/Cr-MOFs at pH 6. Moreover, a maximum removal capacity of minocycline reaching 506 mg/g was achieved with Y/Cr-MOFs. These results demonstrate the practical application potential of utilizing Y/Cr-MOFs for efficient minocycline adsorption.
研究领域:
环境科学
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材料科学
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药物化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF FLUORESCENCE
·
2025
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IF 3.1
Han Bo-Ming,Zhang Hao-Rui,Gao Wen-Jie,He Xi-Wen,Li Wen-You,Zhang Yu-Kui
In this work, a dual-emission material based on lanthanide metals was synthesized and used as a ratio fluorescence sensor to respond to Hg 2+ and H 2 O 2 , respectively. Tb-BDC-NH 2 as a bimetal MOFs had double ligands and exhibited double fluorescence emission peaks at 550 nm and 450 nm. The two emission peaks of Tb-BDC-NH 2 can be quenched by Hg 2+ and H 2 O 2 respectively, forming a built-in calibration signal for ratio fluorescence detection. Based on the different detection conditions of the Hg 2+ and H 2 O 2 , the simultaneous detection of the two detection substances can be achieved with simple operation. This detection system had good stability and anti-interference ability. Under optimal conditions, the detection limit for Hg 2+ detection was 0.2 µM. Meanwhile, for the detection of H 2 O 2 , the detection limit was 11 µM and large linear ranges were obtained. Through actual sample testing, it had been proven that the ratio fluorescence sensor based on Tb-BDC-NH 2 had good application prospects. And the work also provided a new idea for double substances detection.
研究领域:
分析化学
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环境科学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CRYSTENGCOMM
·
2022
·Vol. 24
·期 42
·7420-7426
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IF 3.756
Mingming Ruan,Anqi Li,Yaping Wen,Lian Zhou,Jun Zhang,Xiaopeng Xuan
Ammonia capture is of great importance to environmental protection and resource conservation. In this work, two isoreticular bio-MOFs, namely, Zn(3-AIN)(AD)·DMF and Zn(3-AIN)(AD)·DMA, were constructed with inexpensive, easily available and low-toxicity/non-toxic ligands and Zn2+ in different solvents, respectively. They possess 1D channels decorated by four free amine groups and N atoms from pyrimidine rings and can retain their crystallinity and porosity even after soaking in boiling water for 4 hours and in aqueous solution with various pH values ranging from 1 to 14. These two bio-MOFs can serve as promising sorbents for NH3, exhibiting a large uptake of about 7–10 mmol g−1 at 1 bar.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
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2025
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IF 6.2
Yuqiang Liang,Hongzhi Cheng,Yujie Zhang,Junyang Jin,Yang Wang,Jian Gu,Jian Yang,Yinsheng Li
A novel amorphous Zr-MOFs (aZMs) was synthesized using ZrCl 4 and C 10 H 6 O 8 , with deionized water and ethanol as solvents. ZrC nanoparticles were successfully synthesized by pyrolyzing aZMs precursors via one-step thermal decomposition. Effects of metal/linker molar ratios and pyrolysis temperatures on the composition and microstructure of ZrC powders were investigated, meanwhile, the synthesis mechanisms were also discussed. High-purity spherical ZrC nanoparticles (104.2 ± 21.5 nm) were obtained by pyrolyzing the aZMs with metal/linker molar ratio of 2 at 1500 °C. Notably, additive-free dense ZrC ceramic were fabricated using precursor-derived ZrC nanoparticles at 1900 °C for 1 h with a pressure of 30 MPa by SPS, achieving a high relative density (96.2 %) and Vickers hardness (15.9 GPa). Compared with commercially available ZrC ceramic (93.3 %, 12.79 GPa), the as-sintered ZrC ceramic exhibited better sinterability and higher hardness. This work provides a promising potential for use in fabricating ZrC-based ultra-high temperature ceramics and composites.
研究领域:
材料科学
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陶瓷工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Inorganic and Organometallic Polymers and Materials
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2025
·
IF 4.9
Zhang Siqi,Wu Shu,Li Jinglei,Wang Qi,Yang Bowen,Guan Mengxiang,Peng Guirong,Zhao Xiaojia
The ferroelectric polymer PVDF and its copolymer have garnered significant attention in the field of dielectric energy storage due to their high permittivity and high breakdown strength. However, their high dielectric loss limits their application in the field of energy storage. Thus, reducing the dielectric loss of films while maintaining a high permittivity presents a challenge. In this paper, NiBDC and CuBDC were synthesized via solvothermal method and added into P(VDF-HFP) films, respectively. The effect of MOFs on the structure and dielectric properties of P(VDF-HFP) films were investigated. The results showed that the addition of MOFs could significantly increase the crystallization temperature while decreasing crystallinity and crystal size of the films. Tanδ decreased from 0.059 to 0.042 (10 k Hz, 18 °C) for the film with 10% CuBDC addition as coordinatively unsaturated metal centers in MOFs acted as electron traps that reduced tanδ and conductivity of the films. In addition, for the film with 1% CuBDC, the breakdown strength increased from 341.5 MV/m to 369.5 MV/m, the efficiency of the films increased from 87.7 to 93.9%.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2018
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IF 11.698
Weiyi Chen,Bin Han,Chen Tian,Xueming Liu,Shujie Liang,Hong Deng,Zhang Lin
Reducing carbon dioxide (CO 2 ) to various value-added chemical products by photocatalysis could effectively alleviate the serious problems of global warming and energy shortages. Currently, most commonly prepared photocatalysts present poor performance under visible light irradiation. In this study, we adopted a facile, scalable and controllable approach to prepare ultrathin two-dimensional (2D) porous Co 3 O 4 catalysts (Co 3 O 4 -NS) by air calcining of the ultrathin metal-organic framework (MOFs) nanosheet templates to validly reduce CO 2 with a Ru-based photosensitizer under visible light irradiation. Benefitting from the structural nature of MOFs precursors, the calcined Co 3 O 4 -NS inherit the morphology of 2D and well-developed porosity, which support the transport of electrons, enhance the adsorption of CO 2 molecules, and render abundant catalytic sites for CO 2 activation. As a result, the CO generation rate is approximately 4.52 μmol·h −1 with selectivity of 70.1%, which is superior to the Co 3 O 4 bulk catalysts (Co 3 O 4 -BK). Additionally, density functional theory (DFT) calculations reveal that the model of Co 3 O 4 monolayer has stronger CO 2 adsorption energy than that of the Co 3 O 4 bulk, which is beneficial for the CO 2 -to-CO conversion. This MOF-engaged strategy provides new insight into the controlled synthesis of advanced ultrathin holey nanosheets to improve the efficiency of photocatalytic CO 2 reduction.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2019
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IF 3.375
Kai Huang,Lin Lin Guo,Dong Fang Wu
A series of effective heterogeneous catalysts, Cu or Ni salen with various loadings encapsulated in amino functionalized MOFs, were synthesized successfully for the first time via a one-pot method and denoted as metal salen@NH2-MIL-101(Cr). On the basis of detailed characterization of the catalysts, the varying coordination abilities between the Cu or Ni salen and NH2-MIL-101(Cr) provided the as-prepared Cu or Ni salen@NH2-MIL-101(Cr) with distinct activities toward styrene oxidation. The catalytic results showed that the introduction of Cu or Ni salen can significantly promote the selectivity to epoxide. However, Cu salen@NH2-MIL-101(Cr) showed preferable activity for styrene oxidation, and phenylacetaldehyde was generated with increasing Cu salen content. The optimal conditions for the reaction were also discussed, including the types of oxidants present, molar ratios of styrene and TBHP, and temperature. In particular, the mechanism of the styrene oxidation in 70% TBHP over Cu salen@NH2-MIL-101(Cr) was proposed in this work.
研究领域:
材料化学
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催化化学
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2021
·
IF 3.882
Liwei Zhao,Ming Gong,Jian Yang,Jinlou Gu
The construction of a biomimetic ionic channel is of great significance for the fabrication of smart biodevices or logic circuit. Inspired by the selective permeability of the cell membrane toward bioions, a light-induced and pH-modulated artificial nanochannel is herein prepared by integrating the multistimuli-response molecule of carboxylated spiropyran (SP-COOH) into the frameworks of NU-1000 (Zr-based MOFs defined by Northwestern University). The loading density of the SP-COOH could reach as high as 7 wt % while keeping unchanged crystallinity and high porosity. Thanks to the precise matching of pore size of NU-1000 and molecular dimensions of SP-COOH, the loaded molecules could proceed free and reversible for isomerization between the hydrophilic and hydrophobic states. The ion-switchable characteristics of the channel are implemented by the amphiphilic change of the light-controlled gate molecule. Additionally, in the hydrophilic state, the channel presents reversible affinity toward cations or anions due to the reverse charge state induced by pH, thus constructing a pH-controlled subgate. Taking [Ru(NH3)6]3+ and [Fe(NH3)]3– as the model cation and anion, their redox peak currents occur as reversible change under different signal combinations of light and pH. Moreover, in accordance with the ionic selective permeability, several logic circuits/devices are designed to display the relationships between exogenous stimuli and ionic transportations in a computer language, prefiguring their wide application prospects in electronic devices and life sciences.
研究领域:
材料科学
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生物医学工程
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化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Green Processing and Synthesis
·
2023
·Vol. 12
·期 1
·
IF 4.3
Qinhui Ren,Yufu Ma,Fuhua Wei,Lan Qin,Hongliang Chen,Zhao Liang,Siyuan Wang
Zr-metal-organic frameworks (Zr-MOFs) were prepared by a solvothermal method and characterized by X-ray diffraction, scanning electron microscopy, and thermogravimetry. Zr-MOFs were used to remove doxycycline hydrochloride (DOC) from wastewater. According to the experimental results, the maximum adsorption capacity of DOC by Zr-MOFs within 5 h was 148.7 mg·g −1 . From the pseudo-second-order kinetics model, all R
2 values were greater than 0.99, which proved that the adsorption of DOC by Zr-MOFs was consistent with practice. According to the Freundlich isotherm model, the adsorption of DOC by Zr-MOFs proceeded via multilayer adsorption. The aforementioned results show that Zr-MOFs have good application prospects for removing DOC from wastewater.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Hong Jia,Jie Wang,Wenwen Fu,Junhua Hu,Yu Liu
Metal-organic frameworks (MOFs) have been considered as the outstanding templates and precursors in synthesizing advanced cathode materials for supercapacitor. Herein, a novel hierarchical structure with hollow Co 9 S 8 polyhedrons welding on the top of MnCo 2 S 4 nanoneedles are rationally designed via a facile in-situ vulcanization approach. The unique morphology can provide more abundant reaction sites and ensure the efficient electron transport. Due to the synergistic effect between MnCo 2 S 4 and Co 9 S 8 , the hybrid electrode delivers a favorable specific capacity of 1100.5 F·g −1 at a current density of 1 A·g −1 in three-electrode system. Furthermore, an assembled asymmetric supercapacitor comprising MnCo 2 S 4 /Co 9 S 8 and activated carbon delivers a high energy density up to 45.8 W·h·kg −1 at a power density of 800 W·kg −1 . Moreover, the device holds more than 94.8% capacitance retention after 5000 cycles, demonstrating it could be a potential electroactive material for next-generation high performance energy storage device.
研究领域:
材料科学
·
能源存储
✓ 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）