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学者姓名:李坚
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Abstract :
Biotrickling filters (BTFs) for volatile organic compounds (VOCs) have attracted tremendous research attention in the field of environmental engineering. However, the problem of clogging occurred during the long-term operation limits their practical applications. To alleviate the clogging, an integral polypropylene (PP) packing coated with polydimethylsiloxane (PDMS) was prepared, and in combination with fungus, its performance was investigated for toluene elimination. Two laboratory-scale BTFs were started at low toluene concentrations of 200-900 mg.m(-3). Subsequently, a series of experiments were conducted at toluene concentrations of 47-2906 mg.m(-3), with empty bed residence time (EBRT) values of 50 and 40 s. Toluene removal efficiency reached 100 % at the inlet toluene concentration of 296-560 mg.m(-3) for EBRT of 50 s. The maximum elimination capacity (EC) of 98 g.m(-3).h(-1) was obtained at an inlet toluene load of 117.67 g.m(-3).h(-1). Clogging was relieved by manual cleanup, and the BTFs were operated steadily for nearly 8 months. CO2 production was monitored during the whole operation, and toluene mineralization was evaluated simultaneously. Furthermore, the biofilm structure and microbial diversity were analyzed.
Keyword :
Integral packing Integral packing Mineralization Mineralization Biotrickling filter Biotrickling filter Polydimethylsiloxane Polydimethylsiloxane Clogging Clogging
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GB/T 7714 | Lv, Ruitong , Kang, Jia , Fan, Xing et al. Performance of integral polypropylene packing coated with polydimethylsiloxane in biotrickling filter for toluene elimination [J]. | PROCESS SAFETY AND ENVIRONMENTAL PROTECTION , 2023 , 169 : 199-211 . |
MLA | Lv, Ruitong et al. "Performance of integral polypropylene packing coated with polydimethylsiloxane in biotrickling filter for toluene elimination" . | PROCESS SAFETY AND ENVIRONMENTAL PROTECTION 169 (2023) : 199-211 . |
APA | Lv, Ruitong , Kang, Jia , Fan, Xing , Li, Jian . Performance of integral polypropylene packing coated with polydimethylsiloxane in biotrickling filter for toluene elimination . | PROCESS SAFETY AND ENVIRONMENTAL PROTECTION , 2023 , 169 , 199-211 . |
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Abstract :
Separation of natural products from their mixture of structurally similar compounds is an important process for drug development and application. Borneol is a natural product widely used in the treatment of the cardiovascular and cerebrovascular diseases, and its production always involve the challenging separation from the diastereomer isoborneol (about 50 %). Herein, elven types of metal-organic frameworks (MOFs) with diverse pore structure and functionalities (-F, -NH2, -SO3H, and -OH) are utilized to evaluate their borneol/isoborneol separation performance, as the first attempt to use MOFs for diastereomers separation. Among these MOFs, UiO66-F4 exhibits the best performance with the borneol/isoborneol selectivity of 2.23 and the maximum borneol adsorption capacity of 106.88 mg center dot g 1 at 298 K, owing to the efficient pore confinement of borneol molecule confirmed by molecular simulation. Subsequent column breakthrough experiment demonstrates good separation performance under dynamic conditions. After five-stage purification unit process, high-purity borneol (>96 %) can be obtained. Furthermore, good reusability and scale-up synthesis suggest a high potential of the UiO-66-F4 materials for practical application.
Keyword :
Borneol purification Borneol purification Metal-organic frameworks (MOFs) Metal-organic frameworks (MOFs) Diastereomer Separation Diastereomer Separation
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GB/T 7714 | Lu, Mu-Yao , Xie, Yabo , Huang, Hongliang et al. Purification of borneol from its isomeric mixture by using metal-organic frameworks [J]. | SEPARATION AND PURIFICATION TECHNOLOGY , 2023 , 304 . |
MLA | Lu, Mu-Yao et al. "Purification of borneol from its isomeric mixture by using metal-organic frameworks" . | SEPARATION AND PURIFICATION TECHNOLOGY 304 (2023) . |
APA | Lu, Mu-Yao , Xie, Yabo , Huang, Hongliang , Zhao, Yan-Long , An, Hao-Tian , Zhang, Xin et al. Purification of borneol from its isomeric mixture by using metal-organic frameworks . | SEPARATION AND PURIFICATION TECHNOLOGY , 2023 , 304 . |
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Abstract :
Currently, the elimination of gaseous pollutants-particularly nitrogen oxides-has emerged as a significant concern. Among various deNO(x) technologies, selective catalytic reduction (SCR) has gained prominence as the primary approach for NOx abatement, owing to its superior performance. In this study, novel low-temperature SCR catalysts were developed by regulating the pH value and doping cobalt based on a V2O5-MoO3/TiO2 (VMT) catalyst. The results show an increased SCR performance with 82.8% and 91.1% for catalysts after pH (=10) modification (VMT-10) and (1 wt%) Co/pH (=10) modification (1CoVMT-10), respectively. H-2-TPR, NH3-TPD, XPS and DRIFTS confirmed that the pH regulation transformed polymerization V species into isolated V5+=O, thus leading to an increase in the number of acid sites, which enhanced the NH3 and NO2 adsorption capacity. Furthermore, the DRIFTS study indicated that the NH3-SCR reaction over 1CoVMT-10 followed the E-R and L-H mechanism.
Keyword :
modified catalyst modified catalyst low temperature low temperature cobalt doping cobalt doping pH regulation pH regulation selective catalyst reduction selective catalyst reduction
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GB/T 7714 | Wang, Ruonan , Zhang, Yanli , Fan, Xing et al. Cobalt-/pH-Modified V2O5-MoO3/TiO2 Catalyst with Enhanced Activity for the Low-Temperature Selective Catalytic Reduction Process [J]. | CATALYSTS , 2023 , 13 (5) . |
MLA | Wang, Ruonan et al. "Cobalt-/pH-Modified V2O5-MoO3/TiO2 Catalyst with Enhanced Activity for the Low-Temperature Selective Catalytic Reduction Process" . | CATALYSTS 13 . 5 (2023) . |
APA | Wang, Ruonan , Zhang, Yanli , Fan, Xing , Li, Jian . Cobalt-/pH-Modified V2O5-MoO3/TiO2 Catalyst with Enhanced Activity for the Low-Temperature Selective Catalytic Reduction Process . | CATALYSTS , 2023 , 13 (5) . |
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Abstract :
As an emerging type of porous material, metal-organic frameworks (MOFs) have been developed as sensors for monitoring environmental pollutants in water. It is of high significance to develop fluorescent MOFs with simple precursors for selective detection of toxic Fe3+ ions. In this work, we present a water-stable two-fold interpenetrated indium-based metal-organic framework (NH2Me2)[In(fdc)(2)]center dot 2H(2)O named BUT-205 ( BUT stands for Beijing University of Technology, H(2)fdc=furan-2,5-dicarboxylic acid) constructed from a biomass-derived ligand. BUT-205 has been structurally characterized by single-crystal X-ray diffraction. BUT-205 was an efficient sensor for Fe3+ ions in water with high sensitivity and selectivity. The limit of detection (LOD) was calculated to be 1.3 mu mol.L-1 being lower than the US - EPA (U. S. Environmental Protection Agency) standard (15.7 mu mol.L-1) in drinking water. Furthermore, BUT-205 could be recycled and used for at least four cycles. CCDC: 2033659.
Keyword :
water safety water safety metal-organic frameworks metal-organic frameworks metal cations metal cations anionic framework anionic framework fluorescent sensing fluorescent sensing
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GB/T 7714 | Zhao, Yan-Long , Khalid, Talha , Xie, Ya-Bo et al. An Interpenetrated Anionic In(III) Metal-Organic Framework for Selective Sensing of Fe3+ in Water [J]. | CHINESE JOURNAL OF INORGANIC CHEMISTRY , 2022 , 38 (9) : 1817-1824 . |
MLA | Zhao, Yan-Long et al. "An Interpenetrated Anionic In(III) Metal-Organic Framework for Selective Sensing of Fe3+ in Water" . | CHINESE JOURNAL OF INORGANIC CHEMISTRY 38 . 9 (2022) : 1817-1824 . |
APA | Zhao, Yan-Long , Khalid, Talha , Xie, Ya-Bo , Wang, Lu , Xie, Lin-Hua , Zhang, Xin et al. An Interpenetrated Anionic In(III) Metal-Organic Framework for Selective Sensing of Fe3+ in Water . | CHINESE JOURNAL OF INORGANIC CHEMISTRY , 2022 , 38 (9) , 1817-1824 . |
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Abstract :
In order to improve the CO catalytic oxidation performance of a Pt/TiO2 catalyst, a series of Pt/TiO2 catalysts were prepared via an impregnation method in this study, and various characterization methods were used to explore the effect of TiO2 calcination pretreatment on the CO catalytic oxidation performance of the catalysts. The results revealed that Pt/TiO2 (700 degrees C) prepared by TiO2 after calcination pretreatment at 700 degrees C exhibits a superior CO oxidation activity at low temperatures. After calcination pretreatment, the catalyst exhibited a suitable specific surface area and pore structure, which is beneficial to the diffusion of reactants and reaction products. At the same time, the proportion of adsorbed oxygen on the catalyst surface was increased, which promoted the oxidation of CO. After calcination pretreatment, the adsorption capacity of the catalyst for CO and CO2 decreased, which was beneficial for the simultaneous inhibition of the CO self-poisoning of Pt sites. In addition, the Pt species exhibited a higher degree of dispersion and a smaller particle size, thereby increasing the CO oxidation activity of the Pt/TiO2 (700 degrees C) catalyst.
Keyword :
catalysis catalysis low temperature low temperature calcination pretreatment calcination pretreatment TiO2 TiO2 CO oxidation CO oxidation Pt Pt
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GB/T 7714 | Cai, Jianyu , Yu, Zehui , Fan, Xing et al. Effect of TiO2 Calcination Pretreatment on the Performance of Pt/TiO2 Catalyst for CO Oxidation [J]. | MOLECULES , 2022 , 27 (12) . |
MLA | Cai, Jianyu et al. "Effect of TiO2 Calcination Pretreatment on the Performance of Pt/TiO2 Catalyst for CO Oxidation" . | MOLECULES 27 . 12 (2022) . |
APA | Cai, Jianyu , Yu, Zehui , Fan, Xing , Li, Jian . Effect of TiO2 Calcination Pretreatment on the Performance of Pt/TiO2 Catalyst for CO Oxidation . | MOLECULES , 2022 , 27 (12) . |
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Abstract :
:the rapid detection of antibiotics in agricultural productsis of great significance. In this work, two stablefluorescent metal-organic frameworks (MOFs), BUT-178 and BUT-179, are synthesizedand used to detect tetracycline antibiotics. Among them, BUT-179exhibits better performance in the detection of different tetracyclineantibiotics in water and eggs. The limits of detection of BUT-179 towardtetracycline, aureomycin, oxytetracycline, and doxycycline all reach thenanomolar level. Furthermore, the cycling tests confirm that BUT-179can be easily recovered and repeatedly used without an obviousperformance loss. This work demonstrates the excellent applicationpotential of MOFs for food safety, especially thefluorescence detectionof antibiotics in foods
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GB/T 7714 | Liu, Lu , Chen, Qiang , Lv, Jie et al. Stable Metal-Organic Frameworks for Fluorescent Detection of Tetracycline Antibiotics br [J]. | INORGANIC CHEMISTRY , 2022 , 61 (20) : 8015-8021 . |
MLA | Liu, Lu et al. "Stable Metal-Organic Frameworks for Fluorescent Detection of Tetracycline Antibiotics br" . | INORGANIC CHEMISTRY 61 . 20 (2022) : 8015-8021 . |
APA | Liu, Lu , Chen, Qiang , Lv, Jie , Li, Yaping , Wang, Kecheng , Li, Jian-Rong . Stable Metal-Organic Frameworks for Fluorescent Detection of Tetracycline Antibiotics br . | INORGANIC CHEMISTRY , 2022 , 61 (20) , 8015-8021 . |
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Abstract :
The separation of ethane from ethylene is an important but challenging process in the chemical industry because of their similar physicochemical properties. Generally, the adsorbents for C2H6/C2H4 separation require an appropriate and relatively small aperture. Herein, we report two dynamic pillar layered metal-organic frameworks (MOFs) BUT-111 and BUT-112 with isomorphic frameworks but different degrees of interpenetration for efficient C2H4 purification. The dynamic behavior makes both the activated MOFs exhibit ultramicropores and reversed order adsorption behavior for C2H6 and C2H4, which could obtain highly purified C2H4 in one step from the C2H6/C2H4 mixture. BUT 111 and BUT-112 could work in a wide temperature range, and with the decrease in temperature, the C2H6/C2H4 selectivity would increase. Moreover, the degree of interpenetration could be well controlled by the synthetic temperature, and the increase in the interpenetration degree of BUT-112 enhanced the C2H4 purification effectively.
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GB/T 7714 | Li, Yi , Xie, Yabo , Zhang, Xin et al. Enhancing Ethane/Ethylene Separation Performance in Two Dynamic MOFs by Regulating Temperature-Controlled Structural Interpenetration [J]. | INORGANIC CHEMISTRY , 2022 , 62 (12) : 4762-4769 . |
MLA | Li, Yi et al. "Enhancing Ethane/Ethylene Separation Performance in Two Dynamic MOFs by Regulating Temperature-Controlled Structural Interpenetration" . | INORGANIC CHEMISTRY 62 . 12 (2022) : 4762-4769 . |
APA | Li, Yi , Xie, Yabo , Zhang, Xin , Velasco, Ever , Chen, Qiang , Li, Jian-Rong . Enhancing Ethane/Ethylene Separation Performance in Two Dynamic MOFs by Regulating Temperature-Controlled Structural Interpenetration . | INORGANIC CHEMISTRY , 2022 , 62 (12) , 4762-4769 . |
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Abstract :
Metal-organic frameworks (MOFs) are widely employed as functional materials in various fields, while intriguing properties for specific applications have been pursued all along with their development. Herein, we adopt a ligand substitution strategy to functionalize the mesoporous IRMOF-74-IV for multivariate MOF catalysts. With similar size and geometry, the porphyrin ligand 4,4 '-(porphyrin-5,15-diyl)bis(2-hydroxybenzolate) (PBHB2-) was mixed with the 3,3 '''-dihydroxy-2 ',2 '',5 ',5 ''-tetramethyl-[1,1 ':4 ',1 '':4 '',1 '''-quaterphenyl]-4,4 '''-dicarboxylate (L-IV2-) ligand in synthesis, giving porphyrin functionalized IRMOF-74-IV analogs. Compared with IRMOF-74-IV, the IRMOF-74-IV-PBHBX-M series show improved stability and performance in photocatalytic CO2 reduction. After tuning the contents of porphyrin ligand and the species of metal ion, IRMOF-74-IV-PBHB45%-Cu demonstrates to be the best as an efficient photocatalyst for the CO2-to-CO conversion. This work has achieved to tailor extant MOFs through a mixed-ligand approach, which would contribute to more multivariate materials and unlock new opportunities for their applications.
Keyword :
Photocatalytic CO2 reduction Photocatalytic CO2 reduction Functionalization Functionalization MOF-74 MOF-74 Porphyrin Porphyrin Metal-organic frameworks Metal-organic frameworks
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GB/T 7714 | Li, Tong-Chuan , Kong, Xiang-Jing , Xie, Yabo et al. Metalloporphyrin functionalized multivariate IRMOF-74-IV analogs for photocatalytic CO2 reduction [J]. | SEPARATION AND PURIFICATION TECHNOLOGY , 2022 , 292 . |
MLA | Li, Tong-Chuan et al. "Metalloporphyrin functionalized multivariate IRMOF-74-IV analogs for photocatalytic CO2 reduction" . | SEPARATION AND PURIFICATION TECHNOLOGY 292 (2022) . |
APA | Li, Tong-Chuan , Kong, Xiang-Jing , Xie, Yabo , He, Tao , Si, Guang-Rui , Li, Xiang-Yu et al. Metalloporphyrin functionalized multivariate IRMOF-74-IV analogs for photocatalytic CO2 reduction . | SEPARATION AND PURIFICATION TECHNOLOGY , 2022 , 292 . |
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Abstract :
Single-phase phosphors are promising materials for the production of new white-light-emitting diodes (WLEDs), whereas efficient white-light-emitting phosphors with high color rendering index (CRI) values still remain rare. Herein, we report a new metal-organic framework (MOF) [Zn4O(BCTA)(1.5)] (BUT-119) with high porosity and intense blue photoluminescence emission, which is constructed from a bicarbazole-based ligand, 4,4',4",4 '''-(9,9'-bicarbazole-3,3',6,6'-tetrayl) tetrabenzolate (BCTA(4-)), and Zn4O cluster. The simultaneous encapsulation of a red-emitting dye, Rhodamine B (RhB) or Basic Red 2 (BR), and a green-emitting dye, Acriflavine (AF), into the pores of BUT-119 results in two single-phase white phosphors, AF/RhB@BUT-119 and AF/BR@BUT-119, showing bright and warm white light emission with high quantum yields (22% and 19%) due to efficient energy transfer among the MOF host and the guest dye molecules. Noteworthily, the CRI values of AF/RhB@BUT-119 and AF/BR@BUT-119 are high up to 94, higher than those of previously reported white-light-emitting MOF-based materials, suggesting their high potential in the fabrication of WLEDs.
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GB/T 7714 | Li, Yaping , Chen, Qiang , Xie, Lin-Hua et al. Single-Phase White-Light Phosphors Based on a Bicarbazole-Based Metal-Organic Framework with Encapsulated Dyes [J]. | ACS MATERIALS LETTERS , 2022 , 4 (11) : 2345-2351 . |
MLA | Li, Yaping et al. "Single-Phase White-Light Phosphors Based on a Bicarbazole-Based Metal-Organic Framework with Encapsulated Dyes" . | ACS MATERIALS LETTERS 4 . 11 (2022) : 2345-2351 . |
APA | Li, Yaping , Chen, Qiang , Xie, Lin-Hua , Wang, Kecheng , Zhao, Minjian , Li, Jian-Rong . Single-Phase White-Light Phosphors Based on a Bicarbazole-Based Metal-Organic Framework with Encapsulated Dyes . | ACS MATERIALS LETTERS , 2022 , 4 (11) , 2345-2351 . |
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Abstract :
The illegal usage of antibiotics as veterinary drugs is an increasing threat for human health. The specific sensing of antibiotics with different toxicity levels is of high challenge, and mainly relies on expensive, time-consuming, and complex instruments. To realize specific sensing by rapid and handy optical sensors, a metal-organic framework (MOF) based dual sensor system is herein developed using two MOF materials BUT-128 and BUT-129 with high sensing selectivity and sensitivity. BUT-128 and BUT-129 exhibit the lowest limit of detection (LOD) towards chloramphenicol and furazolidone among reported MOF sensors. The corresponding dual sensor system with enriched signal readouts realized specific sensing of the strictly forbidden antibiotics (chloramphenicol and nitrofurans) from other regulated veterinary drugs including thiamphenicol, a structural analog of chloramphenicol. Besides, the strategy of this work is expected to flourish the development of optical sensors with high specificity for environment and food safety purposes.
Keyword :
dual sensor dual sensor metal-organic frameworks metal-organic frameworks fluorescence quenching fluorescence quenching antibiotics antibiotics specific sensing specific sensing
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GB/T 7714 | Zhao, Yan-Long , Chen, Qiang , Lv, Jie et al. Specific sensing of antibiotics with metal-organic frameworks based dual sensor system [J]. | NANO RESEARCH , 2022 , 15 (7) : 6430-6437 . |
MLA | Zhao, Yan-Long et al. "Specific sensing of antibiotics with metal-organic frameworks based dual sensor system" . | NANO RESEARCH 15 . 7 (2022) : 6430-6437 . |
APA | Zhao, Yan-Long , Chen, Qiang , Lv, Jie , Xu, Ming-Ming , Zhang, Xin , Li, Jian-Rong . Specific sensing of antibiotics with metal-organic frameworks based dual sensor system . | NANO RESEARCH , 2022 , 15 (7) , 6430-6437 . |
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