Journal of Water Process Engineering
·
2023
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IF 7
Fang Zhang,Lei Wang,Lutao Yang,Yong Dai,Jun Zhang,Lei He,Juqing Cui,Jian Shen,Zhe Wang
Immobilized microbial technology is a simple, cost-effective, and efficient technique to minimize the difficulty and energy consumption of heavy oil extraction, as well as the COD of oilfield wastewater. In this work, PC- g -Mag(Fe-MOF) was prepared to immobilize microorganisms obtained by grafting lecithin after magnetization using Fe-MOF. The orthogonal tests showed that the optimum temperature for immobilized microorganisms was 38 °C, the optimum pH was 7, the optimum inoculum was 7 % and the desired mineralization level was <20,000 ppm. The viscosity of free and immobilized microorganisms decreased by 61.5 % and 76 %. The recovery efficiency of the carrier with two species of bacteria after 5 cycles of experiments was 87.5 % and 73.2 %, respectively. The removal rate of COD in the 5th time was 69.3 %, the viscosity reduction rate of heavy oil was 61.6 %. The recovery efficiency of heavy oil was increased by 25.09 %. Fe-MOF acts as a biocarrier to immobilize bacteria and enhance the metabolic activity of their microbial communities and improves COD removal from oilfield wastewater and viscosity reduction in heavy oil.
研究领域:
环境科学
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微生物学
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产品关联
DOI
高影响因子
ANALYST
·
2023
·Vol. 148
·期 8
·1838-1847
·
IF 4.2
Zhidong Zhao,Yuan He,Xingrui Qi,Nian Li,Zijian He,Yufang Chen,Tao Jin
Electrochemical determination of synthetic opioids such as fentanyl is meaningful but still challenging no matter from a social or academic perspective. Herein, we report a series of novel electrocatalysts based on Fe-containing metal–organic frameworks and multi-walled carbon nanotubes (Fe-MOF/MWCNTs). The obtained Fe-MOF/MWCNT electrode materials all show ultrasensitivity on fentanyl determination. In particular, MOF-235/MWCNTs even exhibit an ultra-low limit of detection (LOD) of 0.03 μM with a wide linear range from 0.1 to 50 μM. Besides, this series of Fe-MOF/MWCNTs also displays excellent repeatability, selectivity, and stability. Moreover, they show good performance in real sample detection and achieve good recovery of 95.47%–102.41% and 96.62%–103.15% in blood and urine samples, respectively. This high performance in fentanyl determination is mainly contributed by the Fenton-like process and the adsorption function of the Fe-MOF. Therefore, these novel Fe-MOF/MWCNTs are promising electrocatalysts for point-of-care device fabrication and also have potential applications in fentanyl rapid test technology.
研究领域:
分析化学
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材料科学
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毒理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED CLAY SCIENCE
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2023
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IF 5.6
Haibin Yang,Junzhen Guo,Liang Chu,Zhi Huang,Zhaohui Liu,Liyan Wang,Zhaokun Wang,Mu Yang,Ge Wang
Utilizing natural, abundant, and eco-friendly materials to facilitate the industrial application of nano-sized MOF particles is of utmost importance, since these nanoparticles possess high activity but difficult to recovery. Herein, benefiting from the negatively charged vermiculite , dispersed nano-sized Fe-MOF particles were successfully in-situ grown on the surface of vermiculite nanosheets (VNs) via a simple solvothermal method. The construction of the composites improved the exposure of organic dye to active sites, resulting in a remarkable performance of Fe-MOF@VNs-4 towards photo-Fenton degradation of RhB , with a k value of 0.096 min −1 and an activity of 0.581 mmol g −1 h −1 , significantly higher than that of pure VNs and Fe-MOF, surpassing most reported MOF composite catalysts. The excellent adsorption ability of Fe-MOF@VNs, along with the presence of divalent iron in vermiculite, greatly enhanced catalytic performance. Mechanistic investigations revealed that VNs facilitate the separation of photoinduced carriers excited from Fe-MOF, indicating a synergy effect between Fe-MOF and VNs. Overall, this work provides a simple and effective strategy to design large-scale and commercially available catalysts for water treatment , and also offers a promising alternative for the industrial application of nano-sized MOF particles.
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
APPLIED SURFACE SCIENCE
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2022
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IF 7.392
Bingzhe Jia,Huailin Yang,Lei Wang,Zhiqi Zhao,Xinming Wu
Compared with most transition metal based electrode materials, 2D M n+1 X n T x has high conductivity and good solvent compatibility. However, its low energy density hinders its application as supercapacitior electrode for electrochemical energy storage applications. Herein, the interface-pillared of Fe-MOF (MIL-100(Fe)) onto Ti 3 C 2 T x MXene layer, which provide rich electrochemical active sites, is achieved, and the MOF nanospheres with MXene nanosheets are subsequently converser into three dimensional multilayer porous nanostructures through the chemical bond couping. Therefore, the MOF nanospheres are anchored between the nansheets of MXene, enabling the fast ion transportation in the three dimensional nanostructures. Menanwhile, the MOF nanospheres prevent the aggregation of MXene nanosheets, and the laminar structure is maintained for more redox reaction sites within the hybrid electrodes through fast charge–discharge cycles. As a result, the MIL-100(Fe)/Ti 3 C 2 T x MXene electrode displays superior energy density (85.53 Wh kg −1 ), which is much higher than the other MXene-based electrodes as far as we know. This design strategy of 2D hybrid electrodes opens up a new way for the commercial application of high perfermance supercapacitor.
研究领域:
材料科学
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电化学
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2022
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IF 4.598
Ping Xiao,Guodong Zhu,Xiaohong Shang,Bin Hu,Boshuang Zhang,Zhaoyu Tang,Jianmao Yang,Jianyun Liu
The Fe-metal organic framework decorated MXene (Fe-MOF/MXene) was in-situ synthesized by one-step hydrothermal method in the presence of MXene. Using Fe-MOF/MXene as modifier, the obtained Fe-MOF/MXene electrode presented excellent electrochemical activity due to the high surface area and good conductivity of MXene. A sensitive arsenite electrochemical sensor was fabricated based on the strong As-hydroxyl bonding at the Fe-MOF/MXene electrode, confirmed by X-ray photoelectron spectroscopy. Cyclic voltammetry characterization indicated that MXene facilitated the charge transfer with enhanced electrochemical response. The Fe-MOF/MXene modified electrode exhibited super-high current response to As(III) by square wave anodic stripping voltammetry, with extremely high sensitivity (8.94 µA·(ng·L −1 ) −1 ·cm −2 ) and super-low limit of detection (0.58 ng·L −1 ). The analysis of the real water demonstrated that the Fe-MOF/MXene-based sensor was feasible for the detection of As(III) in practical application.
研究领域:
材料科学
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环境科学
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分析化学
✓ 已验证
DOI
高影响因子
JOURNAL OF POLYMER SCIENCE
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2025
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IF 3.6
Yang Liu,Guodong Cao,Xuelong Zhu,Yi Zhang,Chenglu Liang,Yukun Chen
Upcycling the wasted polyamide 6 (PA6) to its monomer caprolactam via depolymerization is a promising way to build the resource cycling and alleviate the environmental pollution. High efficient catalyst for PA6 depolymerization is desirable and crucial. Herein, a sulfonated Fe-MOF catalyst was designed and performed as solid acid catalyst for the PA6 depolymerization for the first time. Results showed that a 100% conversion of PA6 solid to water-soluble liquid products can be achieved at temperatures of 250°C after only 1-h reaction. LC/MS results indicated that the water-soluble products were mainly composed of caprolactam and their oligomers. Without catalyst, nearly no water-soluble products can be obtained at the same condition. Moreover, a high selectivity of 90% caprolactam production in the water-soluble liquid products was achieved at 260°C, 5 h. The reaction rate constants at 240°C, 250°C, and 260°C were determined to be 0.024, 0.033, and 0.064, respectively, with a Ea value of 101.8 kJ/mol, showing positive temperature dependent relationship. The comparison of catalytic performances over sulfonated Fe-MOFs, FeCl 3 ·6H 2 O and the pristine un-sulfonated Fe-MOF suggested the synergistic contribution of Fe sites (Lewis acid centers) and the sulfonic acid sites to the catalytic performances. Graphical Water soluble liquid products (100 wt.%) with a high selectivity of 90% caprolactam can be achieved by the addition of Fe-MOF catalyst under a mild condition through the synergistic catalytic contribution of Fe sites (Lewis acid centers) and the sulfonic acid sites.
研究领域:
材料科学
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环境科学
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催化化学
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2022
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IF 6.371
Yi-Ran Li,Ying-Ming Li,Bing-Bing Chen,Wen-Juan Hu,De-Yi Wang
Ideal electromagnetic absorbing material should not only be light weight, broadband and high efficient, but also easily prepared and flame-retarding to satisfy the challenges from rapid development of electronic information technology. In present paper, a new type of electromagnetic absorbent (Fe-MOF-rGO) was prepared via a simple one-pot method to grow metal-organic framework (Fe-MOF) on the surface of in-situ reduced graphene oxide (rGO) by solvothermal method. When 25 wt% of Fe-MOF-rGO was incorporated into the paraffin matrix, the minimum reflection loss value (RL) reached to −43.6 dB at the thickness of 2 mm, and the effective absorption bandwidth (EAB) exceeded 5.0 GHz, which satisfied the goals of high efficiency, light weight and broadband. According the medium permittivity loss, magnetization loss and excellent resistance matching results, it was concluded that the conduction loss (excellent conductivity of rGO), magnetic loss (magnetic resonance of Fe nanoparticles) and interface polarization loss (heterostructure of two-dimensional rGO and three-dimensional Fe-MOF) of Fe-MOF-rGO jointly determined the electromagnetic absorbing performance. Moreover, the combustible behavior of Fe-MOF-rGO was also investigated. When 10 wt% of Fe-MOF-rGO was incorporated into the epoxy resin (EP), the heat release capacity (HRC) and peak heat release rate (PHRR) decreased by 42.1% and 42.3% respectively, which showed an excellent flame-retarding property.
研究领域:
材料科学
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电磁学
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燃烧学
✓ 已验证
DOI
高影响因子
LANGMUIR
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2024
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IF 3.7
Wenqing Han,Yehai Yan,Huifang Wang,Jinzhong Li,Ping Zhao,Zhihao Liu,Fei Yu,Jian Cui,Guangfa Zhang
Solar-driven interfacial water evaporation has become one of the most promising approaches to effectively harvesting freshwater, yet the fabrication of high-performance and multifunctional solar interfacial evaporators (SIEs) still remains a huge challenge to date. In this study, a multifunctional MXene and Fe-MOF@cellulose acetate/polyvinylpyrrolidone (MXM@CP) SIE was prepared via a facile “electrospinning and suction filtration deposition” coupling strategy. Thanks to the incorporation of MXene, MXM@CP displayed excellent photothermal conversion performance. Together with the fast water transport channel provided by the porous cellulose acetate electrospinning substrate, a remarkable solar-driven water evaporation property was achieved for MXM@CP, showing a higher water evaporation rate of 1.1 kg m–2 h–1 under one sun irradiation. Moreover, the resultant composite film also exhibited excellent Fenton catalytic activity to effectively degrade volatile organic compounds (VOCs) due to the synergistic effect of the MXene and Fe-based MOF (Fe-MOF). Particularly, a relatively higher degradation rate of 82.8% was acquired for the resulting evaporator toward the benzene contaminant. These results provide new insights into the construction of high-performance and multifunctional SIEs toward clean freshwater collection from the VOC-contaminated water system.
研究领域:
材料科学
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环境科学
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能源科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of the Taiwan Institute of Chemical Engineers
·
2021
·
IF 5.876
Wenbo Liu,Jiabin Zhou,Dan Liu,Su Liu,Xianjie Liu,Shuang Xiao,Choujing Feng,Changhong Leng
Background The combination of Fenton catalyst and photocatalyst will lead to the decrease in light absorption on the photocatalyst, and it is difficult for Fe 3+ to be converted into Fe 2+ on the Fenton catalyst, resulting in poor Fenton-like process and photocatalysis effect. Preparing catalysts containing oxygen vacancies (OVs) can simultaneously increase the light absorption and the cycle of Fe(Ⅲ) to Fe(Ⅱ) to improve the catalytic efficiency of Fenton-like process and photocatalysis. Methods A mesoporous H-MIL53 with OV was constructed by ligand selective pyrolysis. The formation mechanism of H-MIL-53 vacancy was analyzed by XPS, EPR, FTIR and TG. Significant findings XPS, EPR, FTIR and TG showed that calcination caused the fracture of Fe-O bond resulted in OV and coordinative unsaturated Fe site. H-MIL-53 showed higher degradation efficiency of tetracycline hydrochloride (93%) and high recycling performance. The electron-rich OV could activate the dissolved oxygen to produce •O 2 − through phot-introduced electrons, while the electron-poor iron site can activate H 2 O 2 to produce •OH. These results provide a new direction for the construction of metal-organic framework (MOF) containing OV for application in Fenton-like process and photocatalysis.
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 ALLOYS AND COMPOUNDS
·
2024
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IF 5.8
Zhenyu Gao,Baixue Deng,Longfei Xu,Jun Tang,Qianqian Zhao,Tianfeng Hu,Yu Chen,Lingfeng Deng,Yuanjuan Bai,Kun Du
The risks associated with dye wastewater to the ecological environment are becoming increasingly significant. The efficient utilization and effective protection of water resources have become a persistent challenge. Employing coupling technologies to enhance the wastewater treatment process is an effective strategy for achieving sustainable water resource utilization. Herein, composite catalysts with iron-based metal-organic frameworks loaded with molybdenum disulfide (Fe-MOF@MoS₂) were prepared by a hydrothermal approach. The Fe-MOF@MoS 2 composite catalysts demonstrated superior degradation efficiencies towards various organic dyes like methylene blue, rhodamine B, and Congo red, especially in conditions of low hydrogen peroxide concentration and ultrasonic vibration. Results indicated that after 30 minutes of piezoelectric-Fenton-like treatment, the removal efficiency of the above organic dyes exceeded 90 %. The piezoelectric effect led to efficient cyclic conversion of Fe 2+ /Fe 3+ ions, while the inclusion of MoS 2 enhanced H 2 O 2 activation efficiency. Moreover, the Fe-MOF@MoS 2 catalyst displayed remarkable recycling capabilities, retaining 90 % of its initial catalytic activity even after six degradation cycles. Thus, the development of composite catalysts with combined piezoelectric and Fenton-like functions holds great promise for improving organic dye wastewater treatment and safeguarding environmental and water resources.
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
JOURNAL OF ALLOYS AND COMPOUNDS
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2024
·
IF 5.8
Haifeng Ru,Yanji Bao,Yifeng Wang,Xiaohong Wang,Jinchun Tu,Qiang Wu,Yi Li,Lei Ding
Direct seawater electrolysis offers a viable solution to the excessive consumption of fresh water resources in existing industrial electrolytic water processes. However, electrolysis efficiency and material stability are affected by electrode material corrosion caused by chlorine evolution reactions (CER) at the anode positions. In this study, the prepared S-Ni-MOF/Fe-MOF material exhibits an exceptional performance in the oxygen evolution reaction (OER) both in alkaline solution and seawater. Specifically, the material achieves low overpotentials of 281 and 279 mV in 1.0 M KOH and alkaline seawater at 100 mA cm −2 current density, and maintains stability for at least 100 h in both electrolyte solutions. The electronic structure of MOF-on-MOF was modulated through the introduction of S 2− , which induced a large number of vacancies. Furthermore, the reconstruction process on the material surface was accelerated by the formation of NiOOH and FeOOH, that served as protective layers and prevented the corrosion of the electrode material by Cl − , thereby enhancing its stability in seawater. Furthermore, computational studies have indicated that the Fe-Ni active sites at the heterointerface exhibit a synergistic effect, which has been confirmed by density functional theory (DFT) calculations. These results prove that this combination significantly reduces the energy barrier associated with the OER. Consequently, the reaction process is accelerated.
研究领域:
材料科学
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电化学
·
计算化学
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Qianshun Chen,Qiuyan He,Yiting Wang,Chen Huang,Yuyu Lin,Jieyang Wang,Wei Shen,Bin Qiu,Xunyu Xu
Carcinoembryonic antigen (CEA) is the most widely adopted biomarker for the early determination of various cancers, thus it is very important to design a simple and highly effective sensing method to detect CEA. Herein, by synthesizing Fe-MOF nanohybrid loaded with platinum nanoparticles (Pt NPs/Fe-MOF) nanozyme and selecting CEA aptamer (Apt) as the specific recognition element, a simple nanozyme-based voltammetric sensor was designed to detect CEA based on Apt-controlled the catalytic activity of Pt NPs/Fe-MOF nanozyme. The as-synthesized Pt NPs/Fe-MOF nanozyme could catalyze effectively 1,2-diaminobenzene oxidation to produce electroactive 2,3-diaminophenazinc (DAP) which can exhibit a strong reduction current. Nonetheless, when Pt NPs/Fe-MOF is covered fully by Apt of CEA, the peroxidase activity of the as-synthesized Pt NPs/Fe-MOF nanozyme is remarkably restricted and the peak current of DAP would disappear nearly. Interestingly, this catalytic activity could be recovered effectively in the presence of CEA owing to the specific identification of Apt toward CEA. Through optimizing several experimental factors, the as-designed nanozyme voltammetric sensor offers superior detective performance for CEA. In addition, the as-designed sensor possesses superior specificity and selectivity, reproducibility and stability as well as practical applications, showing great potentials for achieving simple, sensitive and highly effective determination of CEA.
研究领域:
生物化学
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医学诊断
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纳米技术
✓ 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）