Journal of Environmental Chemical Engineering
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2024
·
IF 7.4
Mengyao Zhu,Guang He,Zongwei Wang,Junhao Chen,Xiang Fu,Huiyu Yang,Pei Lyu,Shaojin Gu,Xin Liu,Bin Shang
Sorption-based atmospheric water harvesting (SAWH) with metal–organic frameworks (MOFs) offer a promising solution to freshwater scarcity in arid regions. However, given the powder nature of MOFs, scaling-up such a concept with industrially favorable monolithic MOFs in bulky sizes remains challenging. In this study, a pore vertically aligned nanocomposite sorbent where MOF-801 is anchored at the polymeric structure surface was prepared via Fe 3+ -induced crosslinking and directional freezing methods. The continuous vertically aligned hierarchical pores not only offer sufficient sites for MOF-801 loading but also provide rapid moisture transport channels, as well as high solar-thermal conversion efficiency, resulting in a rapid ab/desorption duration of 2 h (including an absorption process for 1 h and a desorption process for 1 h under 1 sun irradiation) and multicycle daily water production of 1.40 L kg −1 at low RH of 20 % and 5.57 L kg −1 at higher RH of 80 %, respectively, which is outperformed most of the state-of-the-art MOFs based SAWH materials. This work provides a simple and effective way to shorten MOF-801 ab/desorption duration, which has great means for designing of high-performance solar-driven water harvesting materials.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
Journal of Inorganic and Organometallic Polymers and Materials
·
2025
·
IF 4.9
Zhang Qiuyun,He Maozhen,He Shijian,Lei Yanhui,Zou Huixin,Zhang Xiaojuan,Hu Yulin,Zhang Yutao
Photocatalytic organic pollutant degradation offers new perspectives for sustainable sunlight utilization and wastewater purification. In this study, the flower-like Bi 2 O 2 CO 3 (BOC) nanosheets were incorporated into zirconium-based MOFs (MOF-801) for the construction of BOC@MOF-801 heterojunction nanocomposites, through a simple one-pot hydrothermal route to remove persistent rhodamine B (RhB) dye efficiently. The as-synthesized photocatalysts were systematically characterized by XRD, FTIR, SEM, EDS, N 2 physisorption, TG, XPS, UV-Vis DRS, PL, transient photocurrent, and EIS techniques. The results of all characterization studies confirmed that the incorporation of BOC into MOF-801 improved the textural properties, visible light response-ability, and the formation of heterojunctions with better charge transport. All BOC@MOF-801 photocatalysts show high activity, with the BOC@MOF-801-0.2 nanocomposite reaching 98.8% RhB (50 mg/L) degradation after 120 min under visible radiation, superior to individual BOC and MOF-801. This improvement possibly due to the relatively high specific surface area (316.2 m 2 /g), suitable pore volume (0.17 cm 3 /g), mesoscale pore size (3.2 nm), narrowed band gap (3.22 eV), and higher photocurrent. Importantly, the free radical scavenging experiment exhibited that holes and · O 2 − radicals are the main species responsible during photodegradation. Moreover, a potential mechanism for the breakdown of RhB dye is also discussed. This research highlighted an efficient way to develop MOFs-based heterojunction hybrid materials for environmental remediation applications. Graphical Zirconium-based MOFs (MOF-801) supported Bi 2 O 2 CO 3 nanocomposites (BOC@MOF-801) were successfully synthesized via a simple one-pot hydrothermal route, which was subsequently applied to photocatalytic degradation of organic dye.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
ELECTROCHIMICA ACTA
·
2023
·
IF 6.6
Rui Zhao,Huimin Ren,Yubing Si,Gang Li,Yongzhu Fu
Phenyl tetrasulfide (PTS) is a high-capacity cathode material for lithium batteries. However, it also suffers the shuttle effect of polysulfides to the lithium anode in the charge because some lithium polysulfides are still formed due to the middle sulfur atoms in the structure of PTS. The separator modification is considered as a convenient and effective strategy to reduce the shuttle effect. In this report, metal-organic framework (MOF)-801(Ce) is synthesized and coated on a polypropylene separator (MOF-801(Ce)−PP) as a polysulfide barrier. MOF-801(Ce) has a pore size of 6 Å, which is smaller than the sizes of lithium thiophenolate and lithium polysulfides. Therefore, the MOF-801(Ce)−PP can effectively inhibit the migration of active species to the lithium metal anode without affecting the passage of lithium ions. Consequently, the Li/PTS cell with the MOF-801(Ce)−PP exhibits a discharge capacity of 340.8 mAh g −1 at 0.5 C after 250 cycles, which is better than the control cell. Even when the PTS areal mass loading is 5.4 mg cm −2 , the cell with the MOF-801(Ce)−PP can still deliver a high specific capacity of 430 mAh g −1 at 0.5 C rate. This study proves a feasible strategy to overcome the polysulfide shuttle issue of organosulfide cathode materials.
研究领域:
材料科学
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电化学
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能源存储
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DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2024
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IF 8.1
Qian Liu,Changdi Wang,Hao Wang,Lu Li,Xingrong Zhang,Ruiyang Zhao,Jishu Han,Lei Wang
Hydrogen energy produced through photocatalytic water splitting is widely recognized as a viable solution to the depletion of non-renewable energy resources and ecological contamination concerns. This work designed and synthesized the MOF-derived hollow octahedral Co x P/MOF-801 p-n heterojunction photocatalyst . According to the result of hydrogen production test, the hydrogen production amount of Co x P/MOF-801-2 could reach 25.31 mmol g −1 under light irradiation for 5 h. The hollow octahedral structure and p-n heterojunction of the photocatalyst helped to enhance the light trapping ability and promote carrier transfer, resulting in improved performance of photocatalytic hydrogen production. To sum up, the design of hollow octahedral Co x P/MOF-801 photocatalyst effectively improved the photocatalytic hydrogen production performance.
研究领域:
材料科学
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能源化学
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
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2024
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IF 8.3
Mengshuo Du,Yingying Wang,Youyu Cao,Wenzhi Tang,Zhonghong Li
Metal–organic frameworks (MOFs) are attractive adsorbents for heavy metal capture due to their superior stability, easy modification, and adjustable pore size. However, their inherent microporous structure poses challenges in achieving a higher adsorption capacity. Defect engineering is considered a simple method to create hierarchical MOFs with larger pores. Here, we employed l-aspartic acid as a mixed linker to bind Zr4+ clusters in competition with fumaric acid of MOF-801 to create defects, and the pore size was increased from 4.66 to 15.65 nm. Mercaptosuccinic acid was subsequently used as a postexchange ligand to graft the resultant MOF-801 by acid-ammonia condensation to further expand the pore size to 22.73 nm. Notably, the −NH2, −COOH, and −SH groups contributed by these two ligands increased the adsorption sites for Pb(II). The obtained defective MOF-801 with larger pores was thereafter loaded onto sodium alginate to form aerogel beads as adsorbents, and an adsorption capacity of 375.48 mg/g for Pb(II) was achieved, which is ∼51 times that of pristine MOF-801. The aerogel beads also exhibited outstanding reusability with a removal efficiency of ∼90.23% after 5 cycles of use. The adsorption mechanism of Pb(II) included ion-exchange interaction, as well as chelation interactions of Pb–O, Pb–NH2, and Pb–S. The versatile combination of defect engineering and composite beads provides novel inspirations for MOF modification for boosting heavy metal adsorption.
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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DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2023
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IF 9.5
Haocheng Li,Chenxi Zhao,Yunpan Ying,Weidong Zhang
Interfacial defect caused by the poor dispersibility of filler particles has been a major obstacle in the application of mixed matrix membranes (MMMs). Improving the fillers dispersibility is an effective approach to improve the separation performance. In this work, for the purpose of preparing defect-free MMMs, a pre-crosslinking strategy was proposed to covalently connect the fillers to the polymer. Such covalently connection realized by the reaction between the additional carboxyl group of the MOF-801 and the hydroxyl group of Polyvinyl alcohol (PVA). The newly reacted ester group, confirmed by Fourier Transform Infrared (FTIR), was identified as a bridge between MOF-801 and PVA. This bridge provides a strong bond between the two and avoids agglomeration between the MOF particles. The uniform distribution of Zr elements observed in the Energy Dispersive Spectrometer (EDS) mapping further confirms that the MOF-801 particles are well dispersed in the MMMs. The prepared membranes exhibited a superior water flux of 3354 g m −2 h −1 for 90 wt % ethanol/water separation at 343 K and excellent stability in 92 h experiment. This study provides an inspiration for mitigating excessive particle agglomeration in MMMs.
研究领域:
材料科学
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化学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
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2023
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IF 3.8
Muhammad Ishfaq,Safyan Akram Khan,Muhammad Altaf Nazir,Shahid Ali,Muhammad Younas,Muhammad Mansha,Syed Shoaib Ahmad Shah,Muhammad Arshad,Aziz ur Rehman
Zirconium-fumaric based metal organic framework (MOF-801) was synthesised by ultra-sonication method. After synthesis, powder X-ray diffraction (PXRD), UV/Vis spectrophotometer and Fourier transform infrared (FT-IR), were used for its functional group identification. For its structural morphology and elemental composition scanning electron microscopic (SEM) and energy dispersive scanning (EDS) analysis was carried out. After typical characterization, photocatalytic degradation of Rhodamine B (Rh-B) was examined under sunlight by using Zr-fumaric MOF-801 as photocatalyst and revealed the satisfactory results. The MnO 2 @MOF-801 and MnO 2 @MOF-801/Chitosan composite were also synthesized with same ultrasonication method. It was concluded from this study that MnO 2 @MOF-801/Chitosan composite has the good photocatalytic activity about 95 % against the Rhodamine B (Rh-B) in contrast with Zr-fumaric MOF-801 (71 %) and MnO 2 @MOF-801 (86 %) after 45 min of reaction. Valence band (VB) gap and conduction band (CB) corresponding to light-induced transition are used to suggest catalytic mechanism. This newly synthesized non-reported MnO 2 @MOF-801/Chitosan composite as a good photocatalyst initiate the new way for the development of others non-reported MOF coated biopolymer with enhanced photocatalyst activity as an environmental remediation for the control of water pollution.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
·
2024
·Vol. 38
·期 6
·e7504
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IF 3.7
Qiuyun Zhang,Mengmeng Hu,Fan Chen,Jiao Lei,Jingsong Cheng,Juan Ma,Yongting Zhao,Yutao Zhang
Development of an energy-efficient and economical route is necessary for society to synthesize green biofuels. Herein, cobalt-doped tungstophosphoric acid (Co-HPW) is in-situ impregnated in the Zr-based metal–organic framework (MOF-801) forming composite of Co-HPW/MOF-801. The chemical composition, morphology, and acidic sites of the Co-HPW/MOF-801 composite were analyzed through x-ray diffractometer (XRD), Fourier transform infrared (FTIR), scanning electron microscope (SEM), energy-dispersive x-ray spectroscopy (EDS), thermogravimetric analysis (TG), N 2 physisorption, ammonia temperature-programmed desorption (NH 3 -TPD), pyridine-adsorbed infrared spectra (Py-FTIR), and x-ray photoelectron spectroscopy (XPS). The catalytic performance of the as-synthesized catalyst was explored to catalyze esterification of lauric acid (LA) with methanol. The outcomes revealed that the Co-HPW/MOF-801 nanocatalyst achieved a high conversion of 86.3% under the optimized reaction condition (catalyst amount of 0.15 g, temperature of 100°C, time of 4 h, and methanol/LA molar ratio of 20:1). The excellent catalytical performance is mainly due to the large BET surface area, exposure of more active centers from available pore structure, and simultaneous possession of high Lewis and Brønsted acidity. Furthermore, the kinetic study revealed that the reaction process was kinetically controlled and the activation energy was found to be 42.1 kJ/mol. The results suggest that the synthesized Co-HPW/MOF-801 nanocatalyst is an environmental greenness, low cost, and suitable for easy scale-up for the production of biofuels.
研究领域:
材料科学
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催化化学
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能源化学
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产品关联
DOI
高影响因子
Journal of Inorganic and Organometallic Polymers and Materials
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2019
·Vol. 29
·期 5
·1476-1484
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IF 1.637
Huang Chengjie,Ye Yunxi,Zhao Liwei,Li Yongsheng,Gu Jinlou
Given to the severely toxic effect on aquatic organisms and serious carcinogen to human being of nitrite, the development of a convenient and sensitive method for its detection is of greatly significance. Herein, a novel Rh110@MOF-801 fluorescent probe was synthesized in a one-pot strategy and was successfully used in the determination of nitrite. This strategy, taking full advantages of fluorescent rhodamine 110 (Rh110) molecules and porous MOFs, could not only overcome the shortcomings of hydrophobicity of dye molecules and preserve its fluorescent properties perfectly, but also facilitate the interaction between nitrite and fluorescent recognition sites thanks to the open structure and good stability of porous MOFs. The results showed that the fluorescence quenching level of Rh110@MOF-801 fluorescent probe was linear with the applied nitrite concentration in the range of 2–7 µM with a limit of detection of 0.2 µM. Furthermore, the well-designed fluorescence probe could specifically recognize nitrite and would hardly be affected by other possibly coexistent interfering substances. It has been successfully used in quantitative detection of nitrite content in water samples mixed with interfering ions, prefiguring its great application potentials for nitrite monitoring. Graphical Abstract
研究领域:
分析化学
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环境科学
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2021
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IF 4.539
Hao Guo,Tingting Zhang,Mingyue Wang,Lei Sun,Junye Zhang,Meng Yang,Fan Yang,Ning Wu,Wu Yang
In this work, a novel sensor based on gold nanoparticle-modified zirconium-metal-organic frameworks (MOF-801) and carboxyl-functionalized carbon nanotube (MWCNT-COOH) composite material was built successfully for electrochemical detection of guanine and adenine in DNA sample, which exhibits diverse advantages such as fast, convenience and high efficiency. Guanine and adenine were detected by the cyclic voltammetry (CV) and differential pulse voltammetry (DPV). Under the optimal conditions, MOF-801/MWCNT-COOH/ AuNPs/GCE delivered linear DPV responses to guanine in the range of 0.8 ~ 60, 60 ~ 180 μM and the adenine in the range of 0.8 ~ 60, 60 ~ 180 μM with the low detection limit of 0.09 μM for guanine and 0.08 μM for adenine, respectively. The advantages of this method include simplicity, rapidity, high sensitivity, good selectivity as well as low cost. The modified GCE was successfully applied to the analysis of guanine and adenine in DNA samples.
研究领域:
生物化学
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2025
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IF 7.5
Liang Chu,Zhaokun Wang,Zhaohui Liu,Teng Zhao,Liyan Wang,Mu Yang,Ge Wang
Host-guest catalysts are promising for tailored applications but require innovative synthesis strategies. Herein, we report the first ambient aqueous-phase synthesis of bimetallic Ce/Zr MOF-801, followed by acid post-treatment. Utilizing defect engineering, Ce species are preferentially exposed within the robust Zr-MOF-801 substrate. This structural modification substantially enhances the host–guest catalyst’s oxidative desulfurization (ODS) performance. We systematically investigate synthesis parameters, spatiotemporal yield, and defect characterization, and refines catalytic conditions. Post-acid-treated Ce/Zr-MOF-801-H displays augmented external surface area (189 m 2 g −1 ), and exposed acidic sites while upholding the outstanding intrinsic stability of the Zr-MOF-801 substrate. Under optimal conditions (60 °C, 6 min), Ce/Zr-MOF-801-H completely eliminates dibenzothiophene (1000 ppm S), with a turnover frequency of 39.3 h −1 and catalytic activity of 53.2 mmol g −1 h −1 , far surpassing Zr-UiO-66-H. It maintains a desulfurization rate of 96.6% after five cycles. FTIR spectroscopy, quenching experiments, and ESR spectroscopy reveal that the exposed Ce sites serve dual roles: (1) activating the substrate by reducing the electron density of sulfur atoms and (2) facilitating H 2 O 2 into hydroxyl and superoxide radicals, driving ODS. This strategy not only advances industrial ODS applications but also sheds light on the synthesis of MOF-based host–guest catalysts.
研究领域:
材料科学
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催化化学
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2020
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IF 5.774
Wenbo Chen,Zhenguo Zhang,Lei Hou,Cancan Yang,Hongcheng Shen,Kai Yang,Zhe Wang
This work mainly studies the CO 2 separation performance of a new type mixed-matrix membranes (MMMs) based on MOF-801 as the microporous filler and PIM-1 as the polymer matrix. MMMs was successfully formed via simple casting/solvent evaporation approach at room temperature. The samples were systematically characterized by SEM, XRD, TGA and FTIR, the permeability-selectivity of MMMs to CO 2 , O 2 and N 2 was studied by gas permeability test. The experimental results show that the uniform dispersion of the CO 2 -philic MOF-801 filler provides a channel for the rapid and selective transport of CO 2 , so the MOF-801/PIM-1 MMMs revealed much higher CO 2 permeability and CO 2 /N 2 ideal selectivity (CO 2 = 9686 Barrer, CO 2 /N 2 = 27, all selectivity in the paper is ideal) than pure polymer membrane. After 90-days aging test, the CO 2 permeability of MMMs remains above 70%, which reflects its good anti-aging performance. After 120 h continuous gas permeability test, it also shows good long-term working stability. The experimental results show that the good gas separation performance of MMMs exceeds the Robeson upper bound (2008), showing good application prospect for practical greenhouse gas CO 2 separation.
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
危险品化学品经营许可证（带存储）