NEW JOURNAL OF CHEMISTRY
·
2021
·Vol. 45
·期 41
·19432-19438
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IF 3.591
Fangyuan He,Heyi Zhang,Xiaonan Li,Jie Yang,Wenqing Ma,Hong Zhang
In this study, for the first time, we selected a size-matched polyoxometalate α-Mo8O26, and successfully prepared Mo8-UiO-66(Zr) as a catalyst with double active sites for extractive and catalytic oxidative desulfurization systems (ECODS). UiO-66(Zr) can encapsulate Mo8O26 in the cage and avoid its leaching, while the sulfur compounds can also enter the cage to approach the sites. As a result, in the presence of H2O2 as an oxidant, the catalyst exhibited extraordinary oxidative desulfurization performance towards benzothiophene (BT), dibenzothiophene (DBT), and 4,6-dimethyldibenzothiophene (4,6-DMDBT). It only takes 10 min for the desulfurization efficiency to reach 100%. The catalyst can be reused for at least 4 times without significant loss in the desulfurization activity. Also, the possible reaction mechanisms of the catalytic oxidation process have also been proposed.
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高影响因子
RENEWABLE ENERGY
·
2020
·
IF 6.274
Heqing Zhang,Zebin Yu,Ronghua Jiang,Yanping Hou,Jun Huang,Hongxiang Zhu,Fei Yang,Mingjie Li,Fengyuan Li,Qi Ran
Developing favorable charge transfer mode for photocatalytic hydrogen evolution in a photocatalyst is a promising way to enhance photocatalytic activity . In this study, MOF, decorated with different functional groups, was initially used as charge transfer mode convertor coupled with CdS/α-NiS-β-NiS. The NH 2 -UiO-66/CdS/α-NiS-β-NiS lead to twice and triple higher H 2 evolution compared to (OH) 2 -UiO-66/CdS/α-NiS-β-NiS and UiO-66/CdS/α-NiS-β-NiS respectively under simulated sunlight. The NH 2 -UiO-66 provides suitable energy band structure to formed Z-scheme with CdS/α-NiS-β-NiS, which plays a synergistic role in the photocatalytic process. The loading of α-NiS-β-NiS significantly improves the visible light absorption ability and provides abundant active sites. As a result, the α-NiS-β-NiS/CdS/NH 2 -UiO-66 show considerable photocatalytic hydrogen production rate of 17.88 mmol h −1 g −1 , which is 7.9 times and 2.5 times as high as-those of pure CdS and 7-α-NiS-β-NiS/CdS, and it also shows a prominent apparent quantum efficiency (AQE) of 14.7% at 420 nm. This work provides a new insight design a metal organic frameworks based heterojunction with highly-efficient photo-induced charge separation and excellent visible-light absorption ability.
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JOURNAL OF SEPARATION SCIENCE
·
2020
·Vol. 43
·期 11
·2240-2246
·
IF 2.878
Chenchen Lin,Guomin Qi,Li Wang,Xucong Lin,Zenghong Xie
A functional stainless steel microextraction fiber easily prepared by in situ growing metal–organic framework UiO-66 was presented and used for high-performance analysis of polycyclic musks. Via the robust Ag-SH bonding reaction, mercaptoacetic acid was easily anchored on Ag film to provide carboxyl group on the stainless steel fiber, then in situ grown UiO-66 was fulfilled via the coordination reaction between Zr 4+ and carboxyl group. Good characteristics including large surface area, high thermal stability, and good adsorption property were achieved. Sensitive detection limits (0.015–0.040 ng/L) were achieved for polycyclic musks by coupling with gas chromatography with mass spectrometry, and it could be stable enough for 150 extraction cycles without a significant loss of extraction efficiency. Compared with the classical commercial fibers, 2.2–11.4 times higher enhancement factors were shown. Applied to the analysis of fortified river water samples, five typical polycyclic musks were well detected with the recoveries of 90.2–101.8%, respectively. It showed a facile approach for preparing stainless steel microextraction fiber via chemically bonding in situ grown metal–organic framework for high-performance enrichment.
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PubMed
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2020
·
IF 4.551
Yunlei Zhang,Wen Guan,Hongyao Song,Yanan Wei,Pei Jin,Bing Li,Changhao Yan,Jianming Pan,Yongsheng Yan
Chemically functional microporous metal-organic frameworks (MOFs) crystals are attractive for catalysis applications, and recent results show that they can be immobilized on high stability substrates, such as carbon materials. In this work, g-C 3 N 4 supported UiO-66-type MOFs catalysts with only acid, base or acid-base bi-functional active sites, have been successfully synthesized via a green (aqueous solutions), mild (90 °C, atmospheric pressure), and one-pot modulated hydrothermal (MHT) method. The physical and chemical properties of the obtained catalysts were systematically characterized by different characterization methods. The results indicated that the synthesized catalysts have microporous structure, excellent thermostability and acid-base bi-functional active sites. One-pot synthesis of 5-hydroxymethylfurfural (5-HMF) from glucose was performed to investigate the activities of synthesized catalysts. Benefiting from the synergistic effects of the acid-base bi-functional active sites, the highest 5-HMF yield of 54.9% was achieved in an isopropanol-mediated DMSO system, under the optimal conditions. Moderate to excellent yields of 5-HMF were also obtained from one-pot conversions of other carbohydrates, including inulin , sucrose, cellobiose, maltose and starch , with our developed catalytic system. The one-pot production of 5-HMF from cellulose was also smoothly processed by the g-C 3 N 4 supported UiO-66-type MOFs catalysts in an IL-based system. This work offers a versatile strategy for developing supported UiO-66-type MOFs catalyst for a wide range of biomass transformation to platform chemicals.
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高影响因子
MICROCHEMICAL JOURNAL
·
2023
·
IF 4.8
Yuheng Lu,Wen Zeng,Jing Hu,Xiandeng Hou
The determination of trace bismuth in environmental or alloy samples are rather challenging due to the low abundance and interferences arising from complicated sample matrix including heavy metals. In this work, Zr-based metal organic frameworks (UiO-66) was prepared and utilized to selectively extract Bi(III) from water samples or digests of iron alloy. Following simple centrifugation separation, Bi(III)-adsorbed UiO-66 was re-suspended in dilute hydrochloric acid for direct slurry sampling and in-situ hydride generation for atomic fluorescence spectrometric (HG-AFS) detection of bismuth. Experimental conditions affecting the adsorption of Bi(III) on UiO-66 as well as the slurry sampling HG-AFS process were carefully investigated. Under the experimental conditions, a limit of detection (LOD) of 0.1 ng/mL was achieved for bismuth. Inspiringly, the method could resist interferences from transition metals like Cu(II), Ni(II) and Fe(III), and this ensured reliable analytical results for the determination of trace bismuth in high-purity iron alloy, seawater, and river water samples.
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高影响因子
FOOD CONTROL
·
2023
·
IF 6
Yangjie Chen,Li Zheng,Juan Hao,Lijuan Huang,Qinghui Wang,Youting Zhou,Zhihang Yin,Lingpu Jia,Huiming Li,Wenlong Liao,Kunping Liu
In this study, a magnetic metal-organic frameworks (MOFs) based hybrid substrate was designed and fabricated for SERS detection of enrofloxacin (ENR) in milk. The magnetic MOF (Fe 3 O 4 @UiO-66-NH 2 ) was synthesized by a facile microwave-assisted method, then loaded with popcorn-like Au nanoparticles (NPs) through electrostatic interaction. The as-prepared SERS substrate (Fe 3 O 4 @UiO-66-NH 2 /Au NPs) integrated the abundant hot spots of popcorn-like Au NPs with porous Fe 3 O 4 @UiO-66-NH 2 , which greatly improved its SERS activity and stability. More importantly, benefiting from the fingerprint characteristics of SERS and adsorption performance of Fe 3 O 4 @UiO-66-NH 2 , the SERS substrate exhibited high selectivity and sensitivity in detecting ENR. Under the optimal detection condition, a good linearity (R 2 = 0.996) was obtained with ENR concentration of 1.0 × 10 −9 –1.0 × 10 −6 M in spiked milk, the LOD was as low as 5.26 × 10 −10 M, and the recoveries were in the range of 76.1–86.1 % at three different spiking levels. The whole detection process including sample pretreatment took about 50 min, which indicating that the prepared substrate has great potential in sensitive and real-time detection of ENR in milk.
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MATERIALS CHEMISTRY AND PHYSICS
·
2023
·
IF 4.6
Xiaoyu Bai,Peng Liu,Xingtong Gao,Kai Liu,Aixiang Li,Zijian Lyu,Qiuhong Li
It is a major obstacle to further development of membrane technology that membrane fouling occurs. In this study, a novel Fe 3 O 4 @UiO-66-NH 2 /PVDF-co-CTFE mixed matrix membrane was successfully developed by mixing Fe 3 O 4 @UiO-66-NH 2 nanoparticles (NPs) into PVDF-co-CTFE membrane through a simple non-solvent-induced phase separation (NIPS) method, and was used for degradation of organic wastewater. The results of the incorporated Fe 3 O 4 @UiO-66-NH 2 NPs content on the morphology, pore structure and physicochemical structure of samples were investigated systematically. The results indicated that the Fe 3 O 4 @UiO-66-NH 2 NPs addition in membrane matrix improved the permeability and significantly enhanced the anti-fouling performance. When 2 wt% Fe 3 O 4 @UiO-66-NH 2 NPs was added, the mixed matrix membrane had excellent comprehensive performance, maintaining a high pure water flux of 226.8 L m −2 h −1 , the BSA rejection rate reached 95.9%, and the flux recovery rate was 71.38%. Importantly, the membrane possessed high catalytic performance based on the Fenton reaction mechanism, and the removal rate of 20 mg L −1 MB solution (400 mL) was up to 99.04%, and showed excellent self-cleaning characteristics and long-term stability. In conclusion, this study provided a new idea for the development of Fenton catalytic membranes with excellent anti-fouling performance for wastewater treatment in complex environments.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2017
·
IF 6.216
Peng Hu,Xiaopeng Liang,Muhammad Yaseen,Xiaodan Sun,Zhangfa Tong,Zhongxing Zhao,Zhenxia Zhao
A novel mechano-chemical strategy using dopamine to modify UiO-66(Zr) by N-coordination was proposed to enhance its competitive adsorption for acetaldehyde, chlorobenzene/H 2 O, both thermodynamically and kinetically. The newly synthesized material was characterized by SEM, EDX, XPS, PXRD, FT-IR, TGA/DTG and BET techniques. Results showed that N was successfully grafted into UiO-66(Zr) frameworks through coordination interaction with Zr-O clusters resulting in M-UiO-66(Zr-N 3.0 ). The obtained M-UiO-66(Zr-N 3.0 ) exhibited a significant increase in adsorption of chlorobenzene (4.94 mmol/g) and acetaldehyde (9.42 mmol/g) compared to parent UiO-66(Zr) and UiO-66(Zr)-NH 2 . The H 2 O adsorption uptake of M-UiO-66(Zr-N 3.0 ) decreased by 20% that of UiO-66(Zr) and 47% of UiO-66(Zr)-NH 2 indicating higher hydrophobicity of the modified material. Kinetic performance indicated that diffusivity of chlorobenzene on M-UiO-66(Zr-N 3.0 ) was about 7.8 and 40 times higher than that of the parent UiO-66(Zr) and UiO-66(Zr)-NH 2 respectively and 15.4 times higher than that of H 2 O on itself. Based on the results, the current N-modification strategy can be deemed as an efficient way to improve MOFs competitive adsorption towards VOCs under humid conditions and it might play active role in industries involving adsorbent applications.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Mingxin Zheng,Keng Xuan,Shuai Yan,Yaoping Guo,Yaxiong Huang,Runling Xu,Kaixuan Zhao,Zebing Li,Xun Li,Hao Jiang,Yadan Guo
A defective metal–organic framework UiO-66–18 synthesized via a facile solvothermal synthesis method with trifluoroacetic acid as modulator was demonstrated to be highly efficient for the elimination of uranium from wastewater. The maximum adsorption capacity of UiO-66–18 toward uranium reached 622.75 mg g −1 , which was approximately 1.43 times higher than that of pristine UiO-66–0 prepared without TFA modulation. The superior elimination performance of UiO-66–18 was because the TFA modulation induced the generation of more missing-linker defects that endowed UiO-66–18 with hierarchical structure and more adsorption active sites for U(VI) capture. Further adsorption mechanism studies indicated that the elimination of U(VI) was endothermic monolayer chemisorption dominated by mass transfer-decomplexation-adsorption process. In addition, the effects of common ions on the elimination efficiency as well as the reusability of UiO-66–0 and UiO-66–18 were studied. This work provides a promising strategy and a theoretical basis for the design and preparation of efficient uranium adsorbent from the points of defects engineering and pore structure design.
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2024
·
IF 20.2
Qingsong Zhang,Qimou Deng,Yaoyao Zhang,Yang Xiao,Chunlei Zhang,Haiyi Gong,Qingming Zeng,Qingyan Zhang,Qingyi Zeng
Unavoidable organics in uranium wastewater or contaminated waters derive great challenges to traditional uranium removal techniques. Here, a drivingpower enhanced photocatalytic fuel cell (DEPFC) is designed by using a carbon felt (CF)-based UiO-66-NH 2 derived zirconia (ZrO 2 )/N-doped porous carbon (ZrON-C/CF) cathode and a monolithic photoanode, composing of a front FTO glass-based BiVO 4 film and a rearmounted Si photovoltaic cell, for effectively oxidizing organics and simultaneously reducing UO 2 2+ from complex wastewater under sunlight illumination. The water contact angle measurements demonstrate that ZrO 2 can improve the hydrophilia of cathode thus increases the contact between UO 2 2+ and cathode. The density functional theory indicates that N-doping can enhance the electronegativity of cathode and increases UO 2 2+ adsorption. Meanwhile, the enhanced UO 2 2+ reduction facilitates the charge separation in BiVO 4 film, therefore enhancing the organic oxidation. Consequently, under AM 1.5 illumination, the designed DEPFC can remove almost 100% of UO 2 2+ and simultaneous degrade 99% organics within 40 min
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Ruimiao Chang,Huichun Wang,Shumian Liu,Yijing Dong,Guangbin Zhang,Anjia Chen,Ruiping Zhang,Yong Li
For rapid separation of quercetin from apple peel, a novel magnetic nanomaterial was prepared by a simple and economical thermal alkaline hydrolysis method in this study. This magnetic nanomaterial was obtained by mixing and then heating magUiO-66-NH 2 (magnetic University of Oslo 66-NH 2 ) with 0.05 mol·L −1 KOH aqueous solution, and was named magUiO-66-NH 2 -MH 0.05 (magUiO-66-NH 2 -mixed heating 0.05 ), which has better magnetic properties, thermal stability, pore capacity and average pore size than magUiO-66-NH 2 . The obtained magUiO-66-NH 2 -MH 0.05 had strong adsorption capacity for quercetin, and the maximum adsorption capacity was 65.30 mg·g −1 . MagUiO-66-NH 2 -MH 0.05 tends to be monolayer-layer adsorption for quercetin, and electron sharing or transfer may occur during the adsorption process. Compared with naringenin, naringin and gallic acid, magUiO-66-NH 2 -MH 0.05 showed good recognition ability for quercetin, and the recovery rate was good. After 7 cycles, the removal rate of magUiO-66-NH 2 -MH 0.05 for quercetin was 96.3 % of the initial adsorption capacity. A magnetic solid-phase extraction method coupled with High-Performance Liquid Chromatography based on magUiO-66-NH 2 -MH 0.05 was successfully used for rapid separation and determination of quercetin in apple peel. This study will help to discover the experimental law of the treatment of UiO-66-NH 2 nanomaterials by hot alkaline hydrolysis, reveal the reaction mechanism, and expand the application of UiO-66-NH 2 nanomaterials in food analysis.
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高影响因子
Energy Storage Materials
·
2025
·
IF 20.2
Mingshu Xie,Zeyu Zhang,Yicheng Wang,Fan Jiang,Hao Tang,Jiuqiang Li,Shuhong Jiao,Jingyi Qiu,Jing Peng,Xibang Chen,Maolin Zhai
Lithium metal batteries exhibit ultrahigh theoretical capacity but face critical challenges in cycling stability and safety due to lithium dendrite growth and dead lithium formation. Herein, a UiO-66/imidazolium-based poly(ionic liquid) (UiO/PPV-Li) gel electrolyte was synthesized through γ-ray radiation-induced in-situ polymerization and crosslinking using 1-vinyl-3-ethylimidazolium hexafluorophosphate ionic liquid ([VEIm]PF 6 ) monomer, pentaerythritol tetraacrylate (PET4A) crosslinker, and UiO-66 dispersed in liquid electrolyte. Enhanced Li + transport was achieved through dipole-ion interactions between [VEIm] + cations and carbonyl groups of PET4A and complemented by dynamic coupling between PET4A and anions. The optimized UiO/PPV-Li exhibited an ionic conductivity of 9.12 mS·cm –1 at ambient temperature. The electrochemical stability window was extended to 5.31 V (vs. Li⁺/Li) through coordination of PF 6 – with Zr–O clusters in the UiO-66 structure. The desolvation energy barrier of solvated Li + was effectively reduced by UiO-66 and optimized hopping sites for Li⁺ transport provided by polymer chains were identified through theoretical calculation. Li ‖ UiO/PPV-Li ‖ LiNi 0.8 Co 0.1 Mn 0.1 O 2 exhibited discharge specific capacity of 154 mAh·g −1 at 1 C (75.7% retention), enhanced cycle stability at 4.8 V and superior high-rate discharge capacities compared to liquid electrolytes. Significant safety improvements were exhibited through flame retardancy and structural integrity of UiO/PPV-Li. The graphite ‖ UiO/PPV-Li ‖ LiCoO 2 pouch batteries exhibited high safety under calendering and nail penetration. The UiO/PPV-Li in-situ synthesized through γ-ray radiation-induced polymerization and crosslinking is a novel strategy for the development of next-generation lithium metal batteries.
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危险品化学品经营许可证（带存储）