MICROPOROUS AND MESOPOROUS MATERIALS
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2024
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IF 4.8
Kunpeng Liu,Yixuan Yu,Qi Wang,Lingtong Kong,Tianjun Sun
A comprehensive investigation was conducted to explore the adsorption behaviors of CH 4 over N 2 on ultra-microporous Al/Zr-FDCA frameworks, which were synthesized specifically using the eco-friendly and bio-sourced 2,5-furandicarboxylic acid (FDCA). Characterization results revealed that both Al-FDCA and Zr-FDCA exhibited similar specific surface area and surface groups, leading to comparable methane uptake per-unit mass at atmospheric pressure. However, the presence of Zr nodes generated ultra-micropores around 0.43 nm in size, leading to a pronounced affinity for CH 4 . Zr-FDCA demonstrated a higher CH 4 /N 2 selectivity (8.90) calculated from the isotherms compared to Al-FDCA (3.86). Furthermore, breakthrough experiments indicated that under the same dynamic conditions, Zr-FDCA exhibited 1.5 times higher CH 4 uptake per unit volume and 2.5 times higher CH 4 /N 2 selectivity when compared to Al-FDCA. Initially, a four-step VPSA process was simulated to investigate the separation of CH 4 /N 2 mixture, in which the effects of feed-gas flow rate, adsorption time, adsorption pressure, and desorption pressure in VPSA cycle were extensively evaluated to enhance the purity and recovery of methane. Subsequently, a six-step process was employed for further optimization, achieving a purity of 95.9 % and a recovery of 99.1 %. The obtained results demonstrated the reliability of the established model and highlighted the significant potential of Zr-FDCA for CH 4 /N 2 separation.
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
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
·
IF 9
Lei Zhang,Tian Ai,Nan Zhang
Minocycline (MNC), as a second-generation semi-synthetic derivative of tetracycline, poses a potential carcinogenic threat to organisms in water, therefore high efficient removal of MNC is becoming a crucial key for water quality safety. This study has been successfully synthesized Ag/Ce bimetallic–doped MOF materials with diverse morphological characteristics by using microwave digestion and solvothermal methods, and it was demonstrated a significant adsorption potential in MNC from aqueous solutions. The characterization results were revealed that Ce exhibits oxygen vacancy enrichment as the central metal in MOFs, while Ag was distributed on carbon framework in the form of Ag 0 NPs, both of morphological features were provided more active sites for adsorption. The Ag/Ce–MOFs was achieved 98.26 % exceptional MNC adsorption efficiency at pH 9, which was followed a multilayer exothermic chemisorption mechanism. The results were shown that the maximum adsorption capacity of Ag/Ce-MOFs was 476.2 mg/g in Langmuir model, which was much more substantially surpassed than Ce–MOFs. In addition, the adsorption process was primarily mediated through hydrogen bonding, ligand interactions and amidation reactions. Furthermore, the Ag/Ce–MOFs exhibited the excellent regeneration performance and broad applicability, which was shown remarkable adsorption potential in removing various other pharmaceutical contaminants in water. In summarization, the synthesized Ag/Ce–MOFs by microwave digestion and solvothermal technology, were demonstrated the board promising prospects in efficient MNC removal in water treatment applications.
研究领域:
环境科学
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材料科学
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水处理技术
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DOI
高影响因子
FOOD CHEMISTRY
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2022
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IF 9.231
Fuxiang Wang,Zuopeng Li,Hongping Jia,Runhua Lu,Sanbing Zhang,Canping Pan,Zhiqiang Zhang
A turn-on fluorescent sensing platform based on an ultralow concentration of Al-metal organic frameworks for the detection of aflatoxin B 1 has been developed for the first time. This fluorescence turn-on sensor exhibits the largest fluorescence enhancement (or quenching) constant value of 179404 M −1 among all luminescence-based chemical sensors reported till date. Moreover, the sensor afforded a rapid detection of aflatoxin B 1 , with a linear response in the concentration range of 0.05–9.61 μM and a low detection limit of 11.67 ppb. Additionally, the fabricated sensor showed good repeatability, reproducibility, stability, and selectivity. Most importantly, the practical application of this sensor has been demonstrated by detecting aflatoxin B 1 in complex tea samples with low relative standard deviation (≤7.72%; n = 3) and satisfactory recoveries. In summary, the proposed method has great potential as a simple, sensitive and selective strategy for monitoring aflatoxin B 1 in food samples.
研究领域:
食品安全
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分析化学
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材料科学
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产品关联
DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2023
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IF 5.9
Xiaohui Yang,Chengjun Tang,Lihong Hu,Yonghong Zhou,Minghao Zhou
The industrial production of monophenols was mainly dependent on fossil resources, due to growing energy demand and escalating environmental issues, more efficient and sustainable strategy, such as utilization of biomass as raw materials to economically produce monophenols, was desired, which could liberate us from the reliance on fossil resource and was of great industrial and social significance. Herein, a novel strategy was reported to produce biomass-derived monophenols from lignin by directly deconstructing C-O bond under mild conditions. A series of NiM-MOFs (M=Co, Mo, and Cu) derived bimetallic catalysts were synthesized via a simple hydrothermal method, which were characterized by XRD , SEM , TEM , XPS and NH 3 -TPD. The synergistic effect between the Ni and Mo greatly improved the catalytic activity and inhibited the transformation to by-products. In addition, we explored a new binary solvents system of MeOH-THF to effectively enhance the selectivity of monophenols. Under optimal catalytic conditions, Ni4Mo1/C-BN catalyst could break the C-O bonds in lignin dimer under 160 ℃ to afford phenol and benzoic acid , and the possible reaction pathway was proposed. The high yield of lignin oil from the oxidation of various realistic lignin also confirmed the superiority of this catalytic system. The lignin depolymerization products were characterized by element analysis, GPC and GC-MS, confirming the presence of mainly guaiacyl-type (G) products, while the highest yield was assigned to vanillin.
研究领域:
生物质化学
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催化化学
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DOI
高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
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2025
·Vol. 39
·期 6
·e70217
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IF 0
Qiuyun Zhang,Mei Deng,Xingxin Li,Nian Xu,Ting Li,Qing Liu,Zhengjun Liu,Yutao Zhang
The development of metal–organic frameworks (MOFs)–based heterogeneous catalysts with both Lewis acid and Brønsted acid sites has proved to be promising and useful because they offer an economical route to synthesize environment-friendly biofuels. Here, a series of Al-based MOFs, functionalized by single -H, -NH 2 , and -NO 2 groups, are successfully synthesized and applied as supports to load phosphomolybdic acid (HPMo) through a facile one-pot hydrothermal method, by forming composites of HPMo@Al-MOFs-X (where X = -H, -NH 2 , and -NO 2 ), and it was used to esterify fatty acids into biodiesel. The structural features of the prepared hybrid materials were evaluated by various techniques, including XRD, FTIR, BET, SEM-EDS, NH 3 -TPD, Py-FTIR, TG, and XPS. The material characterization revealed that the catalytic behavior of the prepared HPMo@AlB composite is better than HPMo@AlB-NH 2 , HPMo@AlB-NO 2 , and pure AlB. The optimized conversion of oleic acid (OA) is 97.5% under the optimized reaction conditions. Moreover, the composite maintained above 90% conversion after nine cycles and demonstrated excellent reusability. This outstanding catalytic activity and stability is mainly attributed to the large specific surface area (138.4 m 2 /g), appropriate pore volume (0.47 cm 3 /g), and mesoscale pore size (17.7 nm) of HPMo@AlB composite that reduced the mass transfer resistance, high total acidity, and the synergistic effect of Lewis acid and Brønsted acid sites and ensures efficient esterification. The present research introduces an important reference for advancing high-performance MOFs-based hybrid materials to industrialize biofuels production.
研究领域:
材料科学
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化学工程
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可再生能源
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产品关联
DOI
JOURNAL OF HAZARDOUS MATERIALS
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2020
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IF 9.038
Qi Yang,Dan Chen,Libing Chu,Jianlong Wang
In present work, we studied a novel Fe/C nanomaterial fabricated using Fe-based metal organic frameworks (MOFs) as precursors through thermal pyrolysis to catalyze gamma irradiation-induced degradation of antibiotics, cephalosporin C (CEP-C) and sulfamethazine (SMT) in aqueous solution. The MOFs-derived Fe/C nanomaterials (DMOFs) had the regular octahedrons structure of MOFs and contained element C, Fe and O, while Fe° with a fraction of Fe 3 O 4 and Fe 2 O 3 were identified. Results showed that DMOFs addition could accelerate the generation of OH during gamma irradiation, while the intermediates of bonds cleavages of antibiotic molecules and OH addition were identified. DMOFs were more effective to improve the decomposition of antibiotic having the higher adsorption capacity like SMT. The degradation rate of CEP-C and SMT increased by 1.3 times and 1.8 times, and TOC reduction at 1.0 kGy reached 42 % and 51 %, respectively by gamma/DMOFs treatment, while only 20.2 % (CEP-C) and 4.5 % (SMT) of TOC reduction were obtained by γ-irradiation alone. The crystal structure, functional groups and magnetism of DMOFs changed slightly after gamma irradiation, which made it possible to be reused. DMOFs were promising to enhance the degradation of antibiotics during gamma irradiation.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
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2022
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IF 7.968
Caiyun Han,Jing Xie,Xize Min
Due to the non-degradable of heavy metal, adsorption has been extensively applied to abatement it. Most studies were focused on uptake metal ions via electrostatic attraction and ion exchange, and load molecule H 3 AsO 4 from strongly acidic wastewater was still challenging. To solve the problem, bimetallic La–Zr MOFs was facilely fabricated in this work, and the fcu topology structure of La-Zr MOFs was remained well under the investigate crystallization time and crystallization temperature. However, the crystallinity of the obtained La-Zr MOFs was influenced by the synthesized factors. The obtained La–Zr MOFs was employed as adsorbent to removal Cr(VI) and As(V), and the performance was evaluated by the batch experiment. The result indicated that the adsorption performance of Cr(VI) and As(V) was positively correlated with the crystallinity , and the optimal sample was 1LaUN 12 . From the XPS characterization, it was found that H 3 AsO 4 was successfully uptake over 1LaUN 12 surface, and the maximum monolayer adsorption capacity was 83.40 mgH 3 AsO 4 /g via ligand exchange and coordination reactions with La−OH and Zr−OH. In addition, the sample 1LaUN 12 also exhibited the excellent Cr(VI) load performance, and the maximum monolayer adsorption capacity of Cr(VI) was 222.5 mg/g. Above 40% Cr(VI) was reduced to Cr(III) by amino groups, and immobilized over the surface of 1LaUN 12 . Eventually, 1LaUN 12 displayed a good structural stability in the acidic medium, which was in favor of removing Cr(VI) and As(V) efficiently from strongly acidic solutions.
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
Journal of Materials Chemistry C
·
2022
·Vol. 10
·期 5
·1690-1697
·
IF 8.067
Mengmeng Cao,Chao Xia,Yunpeng Liu,Jinfeng Xia,Danyu Jiang,Guohong Zhou,Tongtong Xuan,Huili Li
Rapid and quantitative detection of nitrobenzene (NB) in wastewater is of great significance to protect the natural environment and human health. In this work, bifunctional Ln@Zr-MOFs based on UiO-66 were successfully fabricated by partially replacing terephthalic acid (H2BDC) ligands with m-phthalic acid (m-H2BDC) ligands and post-synthetic modification (PSM) with Ln3+ (Ln3+ = Eu3+, Tb3+). The “antenna effect” of the m-H2BDC ligands makes Ln@Zr-MOFs exhibit the characteristic emissions of Ln3+. By adjusting the amount and type of Ln3+, controllable color-tuning emissions can be easily realized, which endows them with a great application prospect for white LEDs. On the other hand, Eu10@Zr-MOFs can serve as a turn-off fluorescent switch of NB because the red emission from Eu3+ can be easily quenched by NB through a photoinduced electron transfer (PET) process between NB and its ligands, and as a result, NB is successfully recognized. Particularly, Eu10@Zr-MOFs as a fluorescent probe have shown many appealing properties, such as high sensitivity (limit of detection is 1.04 μM, limit of quantification is 3.48 μM, and Ksv = 24459.71 M−1), quick response (less than 60 s), a broad response window (0–180 μM), excellent selectivity, and strong anti-interference ability. The real detection results of NB concentration in natural water samples have demonstrated that the reported Eu10@Zr-MOFs are a potential fluorescent material that can precisely and sensitively perform fluorescence sensing of NB.
研究领域:
材料科学
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环境科学
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光学
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DOI
高影响因子
Applied Sciences-Basel
·
2023
·Vol. 13
·期 5
·3182
·
IF 2.7
Chuning Zhang,Huaqiang Chu,Qian Ma,Yanyan Chen,Jianwei Fan
It is important to further enhance the performance of green and efficient non-homogeneous catalysts for advanced oxidation process of Peroxymonosulfate (PMS-AOP) for green treatment of industrial wastewater. In this paper, nitrogen–sulfur co-doped MOFs-derived carbon material (CoSN@C) was prepared by one-pot synthesis followed by carbonization, and its morphological structure was characterized by XRD and SEM. After pyrolysis, the CoSN@C still maintained the dodecahedral morphology and structure of ZIF-67. The synergistic effects of S and N significantly elevated the activation of PMS. The results show that the CoSN@C + PMS system can effectively activate PMS to degrade Rhodamine B (RhB), with a rate constant (1.85 min−1) four times higher than that of the CoN@C + PMS system (0.44 min−1). The optimal catalytic process parameters of material dosage, PMS concentration, temperature, pH, and other parameters were also investigated for the activation of PMS to remove Rhodamine B. The cyclic experiment shows that the CoSN@C has excellent recyclability and the degradation rate of RhB still reached 88.9% after four cycles. Radical capture experiments and EPR tests showed that the CoSN@C + PMS system generated a large amount of SO4·−and ·OH radicals adsorbed on the catalyst surface and a certain amount of singlet oxygen, and the free radical pathway and non-radical pathway worked together to degrade RhB efficiently and rapidly. While non-radical pathway with singlet oxygen as main reactive oxygen species played a key role in the CoN@C + PMS system. This work provides a new idea for the rational design of non-homogeneous catalysts for PMS-AOP system.Keywords:advanced oxidation process;peroxymonosulfate (PMS);non-homogeneous catalyst;MOFs
研究领域:
环境科学
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材料科学
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化学工程
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产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2023
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IF 8.4
Ruhui Hu,Suyun Zhong,Hezhen Liu,Yawen Liu,Hongxia Chen,Xiaojun Hu
A dual-ligand Cu-MOFs (Cu-F/Hs) based on phenylalanine (Phe) and histidine (His) was innovatively constructed with enhanced catalytic property. Among them, Phe can interact with the dopamine (DA) to enhance the substrate affinity. Meanwhile, the coordination of His with copper ions was inspired by the active site structure of natural laccase to improve the catalytic activity. The K m value of Cu-F/Hs was 0.14 times of laccase, indicating a high affinity for the catalytic substrate DA. Accordingly, a sensitive sensor for PD-L1 detection was designed by using Cu-F/Hs, which can catalyze DA to form redox-active polymeric conjugates deposited on the electrode surface with good electrical conductivity, thereby contributing a “signal-down” electrochemical response with a double signal enhancement. The detection limit was 0.12 ng/mL in the detection range of 0.5 – 200 ng/mL. This work provided a new and simple way to synthesize MOFs with high substrate affinity and efficient activity, and a general signal amplification strategy induced by the catalytic deposition.
研究领域:
材料科学
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分析化学
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生物传感器
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催化
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产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2017
·
IF 5.401
Xiaoqun Dong,Yingying Su,Ting Lu,Lichun Zhang,Liqian Wu,Yi Lv
In the present work, porous Co 3 O 4 was easily prepared via thermal decomposition of metal-organic frameworks (MOFs). TG, FT-IR, XRD, SEM, TEM and N 2 adsorption-desorption were employed for characterizing the synthesized products. Based on cataluminescence (CTL) transduction principle, three MOFs including dodecahedra ZIF-67, nanosheets packed Co-MOF-71, nanoplate Co-BTC, and their corresponding derivatives Co 3 O 4 were used as sensing materials for H 2 S detection, respectively. The dodecahedra ZIF-67-derived dodecahedra Co 3 O 4 with high specific surface and exposed {110} lattice planes presented superior strong CTL property, and had a good linear relation in the concentration range of 3.3–27.5 μg L −1 with the detection limit of 1 μg L −1 (S/N = 3), while the original MOFs displayed no CTL signal. Eighteen common volatile organic compounds (VOCs) were investigated as possible interference, and the results indicated that MOFs-derived porous dodecahedra Co 3 O 4 would be one of excellent sensing material candidates for monitoring H 2 S with a promising application in routine analysis.
研究领域:
材料科学
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分析化学
✓ 已验证
DOI
高影响因子
Molecular Catalysis
·
2025
·
IF 4.9
Lu Ren,Bin Wang,Yueli Wen,Maohong Fan,Zhaoxiong Huang,Wenxuan Li,Wei Huang,Jing Li,Jianping Guo
Acid-base synergistic effect is crucial in adjusting the catalytic performance of CO 2 hydrogenation to methanol, an efficient CO 2 emission reduction and carbon recycle strategy. Two MOFs-derived catalysts (CZ-MIL, CA-ZIF) with opposite acid-base properties were tailored by using MIL-68 (Al) and ZIF-8 (Zn) as precursors, and the above two MOFs precursors were hybridized (C-ZAx) to control the acid-base property of the catalyst. C-ZA0.6 (molar ratio of MIL-68 (Al) to ZIF-8 (Zn)=0.6) exhibits a promising catalytic performance with CO 2 conversion of 8.9 %, methanol selectivity of 61.85 %, and STY of 117.02 mg mL −1 ·h −1 at 4 MPa and 523 K. Combined with comprehensive analysis, it is found that methanol selectivity is closely related to weak acid sites arising from the residual skeleton of MIL-68. Acid-base synergy facilitates the hydrogenation of CO 2 to methanol. The basic sites are responsible for adsorbing and activating CO 2 , and the acidic site helps to stabilize CO* and facilitate the further hydrogenation to methanol. This work provides a new idea and feasible method for enhancing the catalytic performance of CO 2 hydrogenation to methanol.
研究领域:
催化化学
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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
危险品化学品经营许可证（带存储）