APPLIED CATALYSIS B-ENVIRONMENTAL
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2024
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IF 20.2
Yinghao Li,Ying Li,Qinglong Meng,Ke Jing,Jingyi Zhang,Qingyu Guan
Achieving efficient phosphorus recovery and reuse from wastewater presents formidable challenges. In this study, a synergistic adsorption photocatalysis process was successfully constructed. 0.1Bi-MIL-101-NH 2 showed the maximum phosphorus adsorption performance of 112 mg/g. After phosphorus adsorption, photoelectrochemical measurements confirmed that the photoelectric properties of the 0.1Bi-MIL-101-NH 2 -P sample was improved, and the degradation efficiency of SMX was increased by 20 % within 120 min. Meanwhile, the mineralization rate reached 91 %. The incorporation of Bi significantly enhanced the adsorption energy of the 0.1Bi-MIL-101-NH 2 sample. Notably, the presence of phosphorus on the surface of 0.1Bi-MIL-101-NH 2 -P enhanced the adsorption of water molecules by the material, thereby augmenting the generation of •OH. •O 2 - and •OH played dominant roles in the photodegradation of SMX. Finally, the degradation pathways of intermediates were further studied by Density functional theory (DFT) calculations and LC-MS analysis. This study provides a new avenue for phosphorus recovery and organic pollutant degradation.
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
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Min Zhang,Jieshu Zhou,Xiulan Guo,Xiangke Zeng,Lan Shi,Tingting Zhang,Yunfei He,Xintao Zhou,Shaoyun Shan,Kaili Yao
Mitigating the rise of atmospheric carbon dioxide (CO 2 ) levels presents one of humanity’s significant challenges. Metal-organic frameworks (MOFs) have emerged as promising materials for CO 2 capture, owing to their unique chemical structure and operability. Many researchers have demonstrated that amination treatment can further enhance CO 2 adsorption performance. However, the relatively low capture efficiency and limited cycling stability of these materials continue to impede their development. Alkali metal cations exhibit high CO 2 adsorption capacities and can be incorporated into the MOF structure to significantly enhance CO 2 capture capacity and cycling stability. Therefore, we synthesized novel alkali metal ion-doped M−NH 2 −MIL−101 (M = Li, Na, K) adsorbents using a post-modification method, successfully anchoring alkali metal cations to carboxylate group sites within the MOFs framework. The integration of microscopy, spectroscopy, and density functional theory (DFT) calculations has confirmed that the introduction of alkali-metal cations enhances the adsorption between MOFs and CO 2 , thereby providing stronger adsorption sites. Experimental studies have demonstrated that doping with 0.1 M K + (denoted as 0.1 K-NH 2 -MIL-101) exhibits a higher CO 2 adsorption capacity (8.2mmol g −1 ) at 298 K, approximately 3.2 times greater than that of NH 2 -MIL-101. Furthermore, it maintains an adsorption capacity of 7.4mmol g −1 after the sixth adsorption–desorption test, indicating excellent cyclic stability. Additionally, 0.1 K-NH 2 -MIL-101 was employed for in situ capture and electrocatalytic CO 2 reduction. By integrating 0.1 K-NH 2 -MIL-101 with a Bi-based catalyst to enhance the local CO 2 concentration, the Faraday efficiency for the formic acid product was effectively increased from 67 % to 85 %.
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
TALANTA
·
2015
·
IF 3.545
Fang Yang,Cheng-Xiong Yang,Xiu-Ping Yan
Effective separation of tocopherols is challenging and significant due to their structural similarity and important biological role. Here we report the post-synthetic modification of metal–organic framework (MOF) MIL-101(Cr) with pyridine for high-performance liquid chromatographic (HPLC) separation of tocopherols. Baseline separation of four tocopherols was achieved on a pyridine-grafted MIL-101(Cr) packed column within 10 min using hexane/isopropanol (96:4, v/v) as the mobile phase at a flow rate of 0.5 mL min −1 . The pyridine-grafted MIL-101(Cr) packed column gave high column efficiency (85,000 plates m −1 for δ-tocopherol) and good precision (0.2–0.3% for retention time, 1.8–3.4% for peak area, 2.6–2.7% for peak height), and also offered much better performance than unmodified MIL-101(Cr) and commercial amino-bonded silica packed column for HPLC separation of tocopherols. The results not only show the promising application of pyridine-grafted MIL-101(Cr) as a novel stationary phase for HPLC separation of tocopherols, but also reveal a facile post-modification of MOFs to expand the application of MOFs in separation sciences.
研究领域:
分析化学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Quan Huo,Gongquan Liu,Haihui Sun,Yanfei Fu,Yao Ning,Boyu Zhang,Xubiao Zhang,Jing Gao,Jiarun Miao,Xiaolin Zhang,Suyan Liu
CeO 2 /MIL-101(Fe) catalysts for a photocatalysis-extraction oxidation desulfurization (PEODS) system were designed by introducing different amounts of CeO 2 into MIL-101(Fe). And, the materials were further analyzed via some characterization technologies. Moreover, an optimization system, composed of CeO 2 /MIL-101(Fe), extractant acetonitrile and oxidant H 2 O 2 , was selected to remove dibenzothiophene (DBT) from model oil under visible-light irradiation. Evaluation results illustrated that 90% of DBT in oil phase was able to be transformed within 2 h as the adding amount of CeO 2 , the volume ratio of model oil to acetonitrile and the molar ratio of H 2 O 2 to DBT was 60 mg, 2:1 and 3:1, respectively. Radical scavenger experiments verified that · OH and · O 2 – were main reactive species in the process. The high photocatalytic activity was originated from a synergic effect produced between active sites of CeO 2 and active surface of MIL-101(Fe) and formed heterostructure in the catalyst, which broadened optical response ranges and facilitated photoinduced charge separations and transfers. Additionally, a convinced PEODS mechanism was proposed and rationalized.
研究领域:
环境化学
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材料科学
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催化化学
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能源工程
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石油炼制
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光化学
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纳米材料
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Si Duan,Yuan Gao,Guihong Lan,Haiyan Qiu,Bo Xu,Xiangming Liu,Ming Zhang,Yusong Chen
Functionalization of ligands is an effective strategy to enhance the adsorption performance of adsorbents. In this study, MIL-101(Fe)-R (R = -H, –OH, –NH 2 , and –NO 2 ) was selected as a platform for systematically studying the impact of functionalization on the adsorption behavior of chlortetracycline (CTC). A series of characterizations were conducted on the prepared MIL-101(Fe)-R to clarify the influence of organic linkers on the microscopic morphology, pore structure, and surface functionality of the adsorbents. Additionally, the effects of different functional groups on the adsorption behavior of MIL-101(Fe)-R were compared to screen for MOFs with high efficiency in removing CTC. Experimental results showed that the maximum adsorption capacities (q m ) of MIL-101(Fe), MIL-101(Fe)–NH 2 , MIL-101(Fe)–OH, and MIL-101(Fe)–NO 2 were 418.980 mg/g, 559.854 mg/g, 187.387 mg/g, and 154.131 mg/g, respectively. Among them, MIL-101(Fe)–NH 2 exhibited a higher mass transfer rate (reaching equilibrium in 15 min). Based on apparent adsorption behavior, adsorption kinetics, isotherm and thermodynamic studies, as well as FTIR and XPS characterizations before and after adsorption, the performance modulation mechanism of MIL-101(Fe)-R in CTC adsorption was discussed in detail. Combined with density functional theory (DFT) calculations, the host–guest interaction controlling the adsorption behavior was understood at the molecular level, demonstrating the optimal binding sites of the adsorbents. This study provides guidance for the design of efficient MOF adsorbents for antibiotic wastewater treatment.
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 Nanomaterials
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2015
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IF 1.644
Tong Liu,Qingtao Wang,Bingzheng Yan,Mei Zhao,Wenbo Li,Haiyan Bie
Highly dispersed crystalline Ru nanoparticles (NPs) were successfully immobilized inside the pores of MIL-101 by a double solvents method (DSM). HRTEM clearly demonstrated the uniform distribution of the ultrafine Ru NPs throughout the interior cavities of MIL-101. The synthesized Ru@MIL-101 catalyst was also characterized by X-ray diffraction (XRD), N2 adsorption desorption, and ICP-AES. The catalytic test indicated that the Ru NPs supported MIL-101 material exhibited exceedingly high activity and excellent durability for hydrogen generation from the catalytic hydrolysis of amine boranes.
研究领域:
材料科学
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催化化学
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY
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2024
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IF 4.3
Jingyu Cai,Junjie Shi,Jian Zhang,Xiaoyu Miao,Sen Wang,Longqiang Xiao,Dan Liu,Linxi Hou
Electronic-grade isopropyl alcohol is widely utilized in the cleaning of semiconductors and microelectronic components. Removing ions like Pb2+ is crucial since the presence of impurities may cause degradation of electronics, increased failure rates, and short circuits. Membrane materials offer a number of advantages in the field of adsorption separation; however, the lack of adsorption sites results in limited adsorption capacity. In the current work, guanidino-grafted NH2-MIL-101(Fe) was incorporated into polyvinylidene fluoride (PVDF) to prepare MOF/PVDF mixed matrix membranes (NM/PVDF) for the removal of Pb2+ from isopropanol. Benefiting from the larger specific surface area and more lone electron pairs in the guanidine group, the Pb2+ adsorption capacity of the as-prepared NM/PVDF membrane was 29.4458 mg/g, which was higher than that of the NH2-MIL-101(Fe)/PVDF membrane (20.9306 mg/g) and the pure PVDF membrane (6.7324 mg/g). The NM/PVDF membrane was able to reduce the concentration of Pb2+ from 500 to 86.73 ppb. This work highlights the potential of guanidine-grafted Fe-based MOFs/PVDF membranes as adsorbents for acquisition of electronic-grade solvents.
研究领域:
材料科学
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环境工程
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Ziyi Xiao,Rui Wu,Tingting Shu,Yingxi Wang,Ling Li
In order to further improve the catalytic performance of MIL-101, cobalt-doped MIL-101(Fe,Co) was synthesized by solvothermal method. By adjusting the ratio of cobalt doping, the MIL-101(Fe,Co 20% ) with the best catalytic activity was obtained. The activation performance of MIL-101(Fe,Co 20% ) for peroxymonosulfate (PMS) was studied using Rhodamine B (RhB) as a pollutant model. The experimental results proved MIL-101(Fe,Co 20% ) with much better catalytic performance than MIL-101(Fe), which can degrade more than 99% of RhB within 15 min. The effects of initial solution pH and coexisting anions in water on the degradation of RhB were further discussed. The results showed that MIL-101(Fe,Co 20% ) was with excellent stability and degradation efficiency can still keep above 90% after five cycles. The free radical quenching experiments were further studied to explore the degradation mechanism. It can be concluded that SO 4 - · was the main active free radical for the degradation of RhB. The possible intermediate products in the degradation process of RhB were analyzed by LC-MS. Combined with the comparison of XPS before and after the reaction, the possible reaction mechanism of RhB degradation process was inferred.
研究领域:
环境科学
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材料科学
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催化化学
✓ 已验证
产品关联
DOI
高影响因子
CELLULOSE
·
2022
·Vol. 30
·期 2
·1171-1191
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IF 6.123
Tu Chao,Sun Zenghui,Huang Fei,Wu Ziwei,Chen Hang
The photocatalytic process is an energy-saving and high-efficiency wastewater treatment technology. In this work, a simple in-situ hydrothermal method was used to prepare a photocatalytic material based on waste loofah with high efficiency, reusability and excellent heterostructure to improve the photodegradation efficiency. The prepared MoS 2 @MIL-101(Fe)@Carboxylated loofah composite material was characterized by scanning electron microscope (SEM), electrochemical impedance spectroscopy (EIS), UV–Vis diffuse reflection spectroscopy (UV–vis DRS), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and transient photocurrent (TPC). The composite material demonstrated high adsorption capacity for hydrochloride (TC) and methylene blue (MB) and photocatalytic capacity under visible-light irradiation at room temperature which were attributed to the porous structure, strong visible-light absorption, and low recombination velocity of electron–hole pairs due to the heterojunctions. The loofah sponge used as a substrate can provide a means for powder catalyst recovery and waste cellulose recycling. Meanwhile, the photocatalyst proved excellent stability in the MB degradation experiment and could be reused for four cycles.
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
高影响因子
Advanced Composites and Hybrid Materials
·
2022
·Vol. 5
·期 4
·2896-2905
·
IF 11.806
Xu Haitao,Zu Mei,Cheng Haifeng,Liu Dongqing,Xie Wei
The thermal management of electronic devices has attracted significant research attention in the recent year. However, the commonly used thermal management materials at this stage are mainly phase change materials (PCMs), which are limited by their relatively low enthalpy. In this study, the metal–organic framework MIL-101(Cr) was synthesised by an environmentally friendly and low-cost L-malic acid as the mineralising agent. The as-prepared MIL-101(Cr) composite coating was utilised as a sorbent for a passive thermal management strategy, through a vapour sorption–desorption process. By coating the as-prepared MIL-101(Cr) powder onto a metal substrate, a temperature drop for 25 min (maximum 8.6 °C) was achieved for 0.256 g of coating at a heating power of 2.5 W. The use of latent heat has emerged as an attractive method for intermittent heat dissipation. The equivalent enthalpy of the composite coating could reach as high as 1171.9 J/g coating , indicating a significant improvement in the thermal management performance compared with the conventional PCMs. Graphical abstract
Summary: A composite coating for thermal management was obtained by silicate solution and powder MIL-101(Cr).
研究领域:
材料科学
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热能工程
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2018
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IF 5.116
Qian Wang,Liang Shao,Zhonglei Ma,Juanjuan Xu,Ying Li,Caiyun Wang
Metal-Organic Frameworks (MOFs) have attracted increasing attention in the field of energy storage owing to their high porosity, high specific surface area, high charge storage. However, the poor conductivity in most MOFs largely hinders their electrical properties. In this work, we developed an effective strategy to grow the conductive polyaniline (PANI) inside the pores of MIL-101 (labeled as PANI/MIL-101) to form a fixed interpenetrating network structure. The electron-rich imine group in PANI is chelated with the coordinatively unsaturated metal sites (CUS) in MIL-101 to form a relatively strong bonded complex and through other synergistic effects to enhance the conductivity and electrochemical properties. The resultant PANI/MIL-101 exhibited a superior high capacitance of 1197 F g −1 (i.e., 957.6C g −1 ) at 1 A g −1 in constant current charge and discharge test. The assembled flexible solid-state supercapacitor showed a favorable specific capacitance, power density and good cycling stability (a 81% capacitance retention rate over 10,000 cycles). It also demonstrates a good flexibility, as evidenced by a small capacitance loss of 10% after being subject to 1000 bending cycles at 180°. The PANI/MIL-101 nanocomposite showed great potential in energy storage device.
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
MICROBIAL PATHOGENESIS
·
2025
·
IF 3.5
Qiaowen Wang,Xiao Huang,Dingjun Wang,Biying Zhong,Mengyuan Xu,Li Liu,Tiantian Liu
Background Multidrug-resistant Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) are emerging in large numbers, while the rapid development of antimicrobial nanomaterials offers new opportunities to combat bacterial infections and antimicrobial resistance. Objectives We employed the nanomaterial MIL-101(Fe) as a carrier loaded with Patchouli alcohol (PA) to form the complex MIL-101(Fe)-PA. and to investigate the inhibitory activity of MIL-101(Fe)-PA against S. aureus and E. coli . Methods According to the literature,we prepared MIL-101(Fe)-PA by solvent method. Characterization of MIL-101(Fe)-PA was carried out using scanning electron microscopy(SEM), Fourier transform infrared(FT-IR) spectroscopy,X-ray diffractometer (XRD) and Brunauer-Emmett-Teller (BET) adsorption analysis. In the bacteriostatic experiments,its bacteriostatic effect was investigated by Minimal inhibitory concentration (MIC) experiments, cell proliferation,and growth curves of bacteria. Then its cytotoxicity was explored by cytotoxicity experiments. Results The characterization results indicated that we successfully prepared the complex MIL-101(Fe)-PA,which showed significant bacteriostatic effects against S. aureus and E. coli at 2 mg/mL. The inhibitory effect was stronger than that of MIL-101(Fe) as well as PA. Conclusion It shows that MIL-101(Fe)-PA has excellent inhibitory effect on S. aureus and E. coli.
研究领域:
材料科学
·
微生物学
·
药理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）