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学者姓名：陈飞飞
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Abstract ：
Bacterial infections result in significant burdens on public health, especially with the increasing prevalence of antibiotic resistance owing to the overuse of antibiotics. The development of the next-generation nanoantibacterial materials as alternatives to antibiotics is urgently needed. Metal-organic frameworks (MOFs) have been emerging as promising antibacterial materials. However, the impact of metal centers on the properties and antibacterial activity of MOFs has not been clarified to date. In this work, five M-MOF nanomaterials (M = Fe, Co, Ni, Cu, Zn) are synthesized with 2-methylimidazole as an organic ligand. Subsequently, the minimum inhibitory concentration (MIC), minimum bactericidal concentration, and time-kill curves are studied to evaluate their antibacterial activity. In addition, the destruction of the bacterial cells after treatment with M-MOFs is observed via scanning electron microscopy. The experimental results demonstrate that the Co-MOF and Zn-MOF polyhedra exhibit optimal antibacterial activity. They can effectively inhibit the growth of both Gram-negative bacteria Escherichia coli and Gram-positive bacteria Staphylococcus aureus at a low concentration. On the other hand, the Fe-MOF irregular particles show the weakest antibacterial activity among five M-MOFs and the antibacterial activity of the Ni-MOF and Cu-MOF nanosheets are comparable to each other. The huge difference in antibacterial activity of M-MOFs is attributed to the difference in the shape and size, specific surface area, surface charge, ion release, and production of reactive oxygen species. Overall, this study clarifies the relationship between metal centers in M-MOFs and their antibacterial activity.
Keyword ：
2-methylimidazole 2-methylimidazole antibacterial antibacterial metal-organic frameworks metal-organic frameworks nanoantibacterial agents nanoantibacterial agents transitionmetals transitionmetals
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| GB/T 7714 | Ding, Ao , He, Yupeng , Chen, Fei-Fei et al. Antibacterial Activity of M-MOF Nanomaterials (M = Fe, Co, Ni, Cu, and Zn): Impact of Metal Centers [J]. | ACS APPLIED NANO MATERIALS , 2024 , 7 (21) : 24571-24580 . |
| MLA | Ding, Ao et al. "Antibacterial Activity of M-MOF Nanomaterials (M = Fe, Co, Ni, Cu, and Zn): Impact of Metal Centers" . | ACS APPLIED NANO MATERIALS 7 . 21 (2024) : 24571-24580 . |
| APA | Ding, Ao , He, Yupeng , Chen, Fei-Fei , Yu, Yan . Antibacterial Activity of M-MOF Nanomaterials (M = Fe, Co, Ni, Cu, and Zn): Impact of Metal Centers . | ACS APPLIED NANO MATERIALS , 2024 , 7 (21) , 24571-24580 . |
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Flexible metal-organic framework (MOF) films are greatly desired for the separation of hazardous molecules and ions from wastewater. The current MOF films are usually horizontally deposited on the substrates, and thus restricted by brittleness, low exposure of surface area, as well as poor separation functions. Here, an organic-inorganic mixed substrate is firstly fabricated by growing hydroxyapatite (HA) nanowire arrays on the cellulose fiber (CF). Subsequently, MIL-100(Fe) nanocrystals are assembled on the surfaces of HA nanowire arrays through a layer-by-layer manner, leading to a unique vertical MOF film. The resulting vertical MOF films show competitive advantages over the horizontal counterparts: (i) they show excellent flexibility and they are tolerant to serious physical damage; (ii) they have multiple separation functions including ion exchange of HA, excellent adsorption of MOFs, and strong electrostatic interaction of CF; and (iii) the agglomeration of MIL-100(Fe) nanocrystals is effectively suppressed. Therefore, the average roughness, specific surface area, and average pore size of films are optimized. As a result, the vertical MOF films show universal separation of positively/ negatively-charged dyes and Pb2+ ion, with high removal rates of > 94 %. More appealing, the mixed pollutants in the complex wastewater can be one-step separated through the vertical MOF films, with high removal rates of > 96 %.
Keyword ：
Dyes Dyes Heavy metal ions Heavy metal ions Hydroxyapatite Hydroxyapatite Metal -organic frameworks Metal -organic frameworks Separation Separation
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| GB/T 7714 | Gan, Wenxiu , Zheng, Ziyang , Yan, Jiawei et al. Vertical MOF film supported on an organic-inorganic mixed substrate for complex wastewater purification [J]. | APPLIED SURFACE SCIENCE , 2024 , 652 . |
| MLA | Gan, Wenxiu et al. "Vertical MOF film supported on an organic-inorganic mixed substrate for complex wastewater purification" . | APPLIED SURFACE SCIENCE 652 (2024) . |
| APA | Gan, Wenxiu , Zheng, Ziyang , Yan, Jiawei , He, Xi , Zhuang, Zanyong , Chen, Fei-Fei et al. Vertical MOF film supported on an organic-inorganic mixed substrate for complex wastewater purification . | APPLIED SURFACE SCIENCE , 2024 , 652 . |
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Regulating charge transfer and reaction pathways are effective strategies for boosting photocatalytic CO2 reduction. Herein, Co3O4/ZrO2 mesoporous octahedrons are synthesized through facile pyrolysis of UIO-66@ZIF-67 core/shell octahedrons. The as-obtained Co3O4/ZrO2 mesoporous octahedrons are assembled by highly dispersive and small-sized nanoparticles, with 13 nm average particle size and 5.8 nm pore width, leading to a high specific surface area of 43.11 m(2) g(-1). Benefiting from active-site engineering, the charge-transfer kinetics and CO2 adsorption are successfully enhanced. In addition, density functional theory calculations reveal that ZrO2 tailors the reaction pathway of CO2 reduction by promoting CO2 activation to *CO2 and intermediate formation (*COOH and *CO), as well as decreasing the energy barrier of the rate-limiting step (*CO -> CO). Thus, the Co3O4/ZrO2 mesoporous octahedrons afford a turnover frequency of 28.82 h(-1), 16.95-fold larger than pure Co3O4.
Keyword ：
CO2 reduction CO2 reduction mesoporous mesoporous metal-organic frameworks metal-organic frameworks oxides oxides photocatalysis photocatalysis
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| GB/T 7714 | Liu, Haibing , Qiu, Yanbin , Gan, Wenxiu et al. MOF-derived Co3O4/ZrO2 mesoporous octahedrons with optimized charge transfer and intermediate conversion for efficient CO2 photoreduction [J]. | SCIENCE CHINA-MATERIALS , 2024 , 67 (2) : 588-597 . |
| MLA | Liu, Haibing et al. "MOF-derived Co3O4/ZrO2 mesoporous octahedrons with optimized charge transfer and intermediate conversion for efficient CO2 photoreduction" . | SCIENCE CHINA-MATERIALS 67 . 2 (2024) : 588-597 . |
| APA | Liu, Haibing , Qiu, Yanbin , Gan, Wenxiu , Zhuang, Guoxin , Chen, Fei-Fei , Yang, Chengkai et al. MOF-derived Co3O4/ZrO2 mesoporous octahedrons with optimized charge transfer and intermediate conversion for efficient CO2 photoreduction . | SCIENCE CHINA-MATERIALS , 2024 , 67 (2) , 588-597 . |
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Beyond traditional paper, multifunctional nanopaper has received much attention in recent years. Currently, many nanomaterials have been successfully used as building units of nanopaper. However, it remains a great challenge to prepare flexible and freestanding metal-organic framework (MOF) nanopaper owing to the low aspect ratio and brittleness of MOF nanocrystals. Herein, this work develops a flexible and free-standing MOF nanopaper with MOF nanowires as building units. The manganese-based MOF (Mn-MOF) nanowires with lengths up to 100 mu m are synthesized by a facile solvothermal method. Through a paper-making technique, the Mn-MOF nanowires interweave with each other to form a three-dimensional architecture, thus creating a flexible and free-standing Mn-MOF nanowire paper. Furthermore, the surface properties can be engineered to obtain high hydrophobicity by modifying polydimethylsiloxane (PDMS) on the surfaces of the Mn-MOF nanowire paper. The water contact angle reaches 130 degrees. As a proof of concept, this work presents two potential applications of the Mn-MOF/PDMS nanowire paper: (i) The as-prepared Mn-MOF/PDMS nanowire paper is compatible with a commercial printer. The as-printed colorful patterns are of high quality, and (ii) benefiting from the highly hydrophobic surfaces, the Mn-MOF/PDMS nanowire paper is able to efficiently separate oil from water.
Keyword ：
flexible flexible free-standing free-standing metal-organic frameworks metal-organic frameworks nanopaper nanopaper nanowires nanowires
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| GB/T 7714 | Yang, Yong , Yang, Zhe , Zhuang, Guoxin et al. Flexible and Free-Standing Metal-Organic Framework Nanowire Paper [J]. | ACS APPLIED MATERIALS & INTERFACES , 2024 , 16 (23) : 30306-30313 . |
| MLA | Yang, Yong et al. "Flexible and Free-Standing Metal-Organic Framework Nanowire Paper" . | ACS APPLIED MATERIALS & INTERFACES 16 . 23 (2024) : 30306-30313 . |
| APA | Yang, Yong , Yang, Zhe , Zhuang, Guoxin , Feng, Ya-Nan , Chen, Fei-Fei , Yu, Yan . Flexible and Free-Standing Metal-Organic Framework Nanowire Paper . | ACS APPLIED MATERIALS & INTERFACES , 2024 , 16 (23) , 30306-30313 . |
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Two-dimension nanosheets are ideal photocatalysts for CO2 reduction due to their high exposure of active sites and short charge transfer pathway. However, 2D photocatalysts have a tendency to agglomeration, thus compromising the performance of photocatalytic CO2 reduction. Trees, one of the most important plants for photosynthesis, have a unique “leaf-on-branch” structure. This unique two-dimension/one-dimension (2D/1D) configuration maximizes the adsorption of CO2 molecules and light harvesting. Herein, a tree-inspired semiconductor-on-ceramic 2D/1D heterostructure for efficient photocatalytic CO2 reduction is reported. The cobalt silicate (CoSi) nanosheets (∼0.68 nm) are in situ grown on the surfaces of hydroxyapatite (HAP) nanowires, creating a well-defined 2D/1D hierarchical structure. The vertical alignment of ultrathin CoSi nanosheets on the HAP nanowires effectively suppresses their agglomeration, leading to a large BET surface area (106.45 m2/g) and excellent CO2 adsorption (8.00 cm3 g−1). The results of photoelectrochemical characterization demonstrate that the 2D/1D hierarchical structure is powerful to expedite charge transfer. As a result, the gas generation rate of CO is as high as 28780 μmol g−1 h−1 over the CoSi-on-HAP 2D/1D heterostructure. In addition, the electron transfer mechanism and reaction pathways of CO2 reduction are revealed by in situ irradiated XPS and in situ DRIFT spectra. © 2024 Elsevier B.V.
Keyword ：
CO2 reduction CO2 reduction Heterostructure Heterostructure Hydroxyapatite nanowires Hydroxyapatite nanowires Photocatalysis Photocatalysis Silicate nanosheets Silicate nanosheets
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| GB/T 7714 | Hu, Y. , Zhu, Y. , He, X. et al. Tree-inspired semiconductor-on-ceramic 2D/1D heterostructure for efficient CO2 photoreduction [J]. | Applied Surface Science , 2024 , 672 . |
| MLA | Hu, Y. et al. "Tree-inspired semiconductor-on-ceramic 2D/1D heterostructure for efficient CO2 photoreduction" . | Applied Surface Science 672 (2024) . |
| APA | Hu, Y. , Zhu, Y. , He, X. , Feng, Y.-N. , Chen, F.-F. , Yu, Y. . Tree-inspired semiconductor-on-ceramic 2D/1D heterostructure for efficient CO2 photoreduction . | Applied Surface Science , 2024 , 672 . |
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An S-scheme nanoparticle heterojunction of Co3O4-TiO2/C has been designed to enhance CO2 adsorption and accelerate interfacial electron transfer, thereby boosting photocatalytic CO2 reduction. Co2+-loaded MXene nanosheets are used as a single precursor for in situ confined growth of Co3O4-TiO2/C. The in situ confined growth of the nanoparticle heterojunction enables good particle dispersion and a small particle size, which makes the surface and active sites highly exposed and accessible for CO2 molecules. In addition, p-type Co3O4 and n type TiO2 build an S-scheme heterojunction. As a result, the Co3O4-TiO2/C nanoparticle heterojunction exhibits a higher specific surface area, larger CO2 adsorption capacity, and faster charge transfer compared to pure Co3O4 and TiO2/C. The gas generation rate over Co3O4-TiO2/C is as high as 33.21 mmol g-1 h-1, which is 8.34 and 1.69 times higher than that of pure TiO2/C and Co3O4, respectively. 3 h photocatalysis affords a remarkable turnover number of 15.53 that is comparable to state-of-the-art photocatalysts.
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| GB/T 7714 | Liu, Haibing , Chen, Kaihang , Feng, Ya-Nan et al. In Situ Confined Growth of Co3O4-TiO2/C S-Scheme Nanoparticle Heterojunction for Boosted Photocatalytic CO2 Reduction [J]. | JOURNAL OF PHYSICAL CHEMISTRY C , 2023 , 127 (11) : 5289-5298 . |
| MLA | Liu, Haibing et al. "In Situ Confined Growth of Co3O4-TiO2/C S-Scheme Nanoparticle Heterojunction for Boosted Photocatalytic CO2 Reduction" . | JOURNAL OF PHYSICAL CHEMISTRY C 127 . 11 (2023) : 5289-5298 . |
| APA | Liu, Haibing , Chen, Kaihang , Feng, Ya-Nan , Zhuang, Zanyong , Chen, Fei-Fei , Yu, Yan . In Situ Confined Growth of Co3O4-TiO2/C S-Scheme Nanoparticle Heterojunction for Boosted Photocatalytic CO2 Reduction . | JOURNAL OF PHYSICAL CHEMISTRY C , 2023 , 127 (11) , 5289-5298 . |
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The Er3+doped double perovskite Ba2CaWO6 crystal is a promising ratiometric thermometer based on the fluorescence intensity ratio(FIR)of transitions from 2H11/2 and 4S3/2 to the lowered 4I15/2 level.However,the Ca2+vacancy defect caused by the charge difference between rare-earth ions and the substituted alkaline-earth ions gives rise to the non-radiative probability and limits the thermal sensi-tivity.Here,the up-conversion luminescence and thermometric performance of Er3+,Yb3+doped Ba2CaWO6 are tuned by tri-doping with alkaline ions.The Ca2+vacancy defect can be eliminated by the introduction of Na+,which occupies the Ca2+site when it is doped into Ba2CaWO6 with Er3+and Yb3+.On the contrary,the doping of Cs+into Ba2CaWO6 with Er3+and Yb3+enhances the defect concentration because it occupies the site of Ba2+.Thus,the tri-doping of Na+reduces the non-radiative probability and enhances the quantum efficiency of Er3+,leading to the improvement of the thermometric sensitivity of Ba2CaWO6.As a result,we get an excellent thermometric Ba2CaWO6:8％Yb3+,3.5％Er3+,6％Na+powder with a luminescence lifetime of 515 us and maximum thermal sensitivity(Sr)of 1.45％/K,which is more than three times higher than that of the BCWO∶Er3+powder.
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| GB/T 7714 | Lingyun Li , Ziwei Zhou , Fazheng Huang et al. Improving luminescence and thermometric performance of Ba2CaWO6∶Er3+by tri-doping with Yb3+and Na+ [J]. | 稀土学报（英文版） , 2023 , 41 (1) : 42-50 . |
| MLA | Lingyun Li et al. "Improving luminescence and thermometric performance of Ba2CaWO6∶Er3+by tri-doping with Yb3+and Na+" . | 稀土学报（英文版） 41 . 1 (2023) : 42-50 . |
| APA | Lingyun Li , Ziwei Zhou , Fazheng Huang , Senlin Peng , Yantang Huang , Guoqiang Wang et al. Improving luminescence and thermometric performance of Ba2CaWO6∶Er3+by tri-doping with Yb3+and Na+ . | 稀土学报（英文版） , 2023 , 41 (1) , 42-50 . |
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The layered double hydroxide (LDH) nanosheets are ideal for photocatalytic CO2 reduction. How to suppress the spontaneous agglomeration of LDH remains a challenge. Herein, this work reports that the insulated calcium silicate hydrate (CSH) nanosheets effectively suppress the agglomeration of NiAl-LDH nanosheets by an electrostatic self-assembly. The charge transfer of NiAl-LDH/CSH is effectively promoted, as verified by photo electrochemical characterizations. As a result, the CO and H-2 generation rates from photocatalytic CO2 reduction are as high as 3432 and 1411 mu mol g(-1) h- (1), which are similar to 2.4 times higher than that of the pure NiAl-LDH.
Keyword ：
Calcium silicate Calcium silicate CO2 reduction CO2 reduction Layered double hydroxides Layered double hydroxides Nanocomposites Nanocomposites Semiconductors Semiconductors
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| GB/T 7714 | Li, Qiuyun , Cao, Hui , Chen, Fei-Fei et al. Boosting charge transfer of NiAl-LDH by silicate nanosheets for enhanced photocatalytic CO2 reduction [J]. | MATERIALS LETTERS , 2023 , 351 . |
| MLA | Li, Qiuyun et al. "Boosting charge transfer of NiAl-LDH by silicate nanosheets for enhanced photocatalytic CO2 reduction" . | MATERIALS LETTERS 351 (2023) . |
| APA | Li, Qiuyun , Cao, Hui , Chen, Fei-Fei , Yu, Yan . Boosting charge transfer of NiAl-LDH by silicate nanosheets for enhanced photocatalytic CO2 reduction . | MATERIALS LETTERS , 2023 , 351 . |
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The traditional fire alarm sensors suffer from sluggishfire warnings.Recently, graphene oxide (GO)-based sensors have attracted much attentiondue to their ultrafast fire warning. There are two major challenges:(i) the duration time of fire warning is short due to poor flame retardancyof GO and (ii) the response temperature of the GO sensor is high dueto the abundant oxygen-containing groups. This work reports the single-strandeddeoxyribonucleic acid (ssDNA)-modified GO supported on the hydroxyapatite(HA) nanowire paper. The ssDNA molecules have an action of intumescentflame retardancy, which effectively improves the flame retardancyof GO. Moreover, the thermal degradation of nitrogenous base of ssDNAcauses nitrogen doping in GO. Concomitantly, the thermal reductionof GO is promoted, and some oxidative groups are removed. As a result,the period of fire warning of GO increases up to 180 s, and the responsetemperature decreases to as low as 159 & DEG;C. Besides, the HA paperwith intrinsic fire resistance ensures the structural integrity ofssDNA-DNA in the flame, contributing to the steady workingof the composite paper. This work highlights the critical roles ofbiomolecules and inorganic materials in synergistically regulatingfire warning performance of GO.
Keyword ：
DNA DNA fire warning fire warning flame retardancy flame retardancy graphene oxide graphene oxide hydroxyapatite hydroxyapatite
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| GB/T 7714 | He, Xi , Xu, Fuli , Chen, Fei-Fei et al. DNA-Modified Graphene Oxide Supported on a Fire-Resistant Hydroxyapatite Paper for Timely and Reliable Fire Warning [J]. | ACS APPLIED NANO MATERIALS , 2023 , 6 (13) : 11612-11621 . |
| MLA | He, Xi et al. "DNA-Modified Graphene Oxide Supported on a Fire-Resistant Hydroxyapatite Paper for Timely and Reliable Fire Warning" . | ACS APPLIED NANO MATERIALS 6 . 13 (2023) : 11612-11621 . |
| APA | He, Xi , Xu, Fuli , Chen, Fei-Fei , Yu, Yan . DNA-Modified Graphene Oxide Supported on a Fire-Resistant Hydroxyapatite Paper for Timely and Reliable Fire Warning . | ACS APPLIED NANO MATERIALS , 2023 , 6 (13) , 11612-11621 . |
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Cobalt-based catalysts are ideal for CO2 reduction reaction (CO2RR) due to the strong binding and efficient activation of CO2 molecules on cobalt. However, cobalt-based catalysts also show low free energy of hydrogen evolution reaction (HER), making HER competitive with CO2RR. Therefore, how to improve the product selectivity of CO2RR while maintaining the catalytic efficiency is a great challenge. Here, this work demonstrates the critical roles of the rare earth (RE) compounds (Er2O3 and ErF3) in regulating the activity and selectivity of CO2RR on cobalt. It is found that the RE compounds not only promote charge transfer but also mediate the reaction paths of CO2RR and HER. Density functional theory calculations verify that the RE compounds lower the energy barrier of *CO -> CO conversion. On the other hand, the RE compounds increase the free energy of HER, which leads to the suppression of HER. As a result, the RE compounds (Er2O3 and ErF3) improve the CO selectivity of cobalt from 48.8 to 69.6%, as well as significantly increase the turnover number by a factor of over 10.
Keyword ：
CO2 reduction CO2 reduction cobalt cobalt metal-organic frameworks metal-organic frameworks photocatalysts photocatalysts rare earth rare earth
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| GB/T 7714 | Sun, Yakun , Li, Long , Li, Xinxu et al. Regulating Activity and Selectivity of Photocatalytic CO2 Reduction on Cobalt by Rare Earth Compounds [J]. | ACS APPLIED MATERIALS & INTERFACES , 2023 , 15 (13) : 16621-16630 . |
| MLA | Sun, Yakun et al. "Regulating Activity and Selectivity of Photocatalytic CO2 Reduction on Cobalt by Rare Earth Compounds" . | ACS APPLIED MATERIALS & INTERFACES 15 . 13 (2023) : 16621-16630 . |
| APA | Sun, Yakun , Li, Long , Li, Xinxu , Feng, Ya-Nan , Chen, Fei-Fei , Li, Lingyun et al. Regulating Activity and Selectivity of Photocatalytic CO2 Reduction on Cobalt by Rare Earth Compounds . | ACS APPLIED MATERIALS & INTERFACES , 2023 , 15 (13) , 16621-16630 . |
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