JOM
·
2025
·
IF 2.3
Wu Shijie,Gu Haiquan,Chen Zhimin,Jia Jun,Sun Liang,Li Yafeng
Nitrogen- and oxygen-doped high specific surfaces of activated carbon with an optimized pore system have been obtained by the method of calcination at 1000°C, using ZIF-8 as the precursor. The ZnCl 2 is as the activating agent, which is reduced to Zn 0 by the carbon in the precursor. And the specific surface area of activated carbon can reach up to 2569 m 2 g −1 . This is comparable to the specific surface area of activated carbon produced with KOH as the activating agent. The N 2 isothermal adsorption–desorption at 77 K indicates that the specific surface area of N-doped super-activated carbon increases a little to 2838 m 2 g −1 , when the urea has been incorporated into the precursor as extra an nitrogen source. Interaction between N- and O-doped carbon and K + ions in KOH is illustrated by the corresponding density function theory (DFT), and the electron cloud between K and the carbon material is simulated. The electrochemical measurements were conducted in 6 M KOH and 1 M Na 2 SO 4 , which confirms that nitrogen and oxygen doping has a significant increase in specific capacitance. The super-activated carbon with an optimized pore system possesses excellent electrochemical performance, which shows good application prospects for energy storage.
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2021
·
IF 7.312
Yun Xiong,Niyan Deng,Xiaoyu Wu,Quan Zhang,Shengpeng Liu,Guofeng Sun
The incorporation of attainable amine functionality in zeolitic imidazolate framework-8 (ZIF-8) is utilized to enhance the pervaporation performance for ethanol/ water separation applications. Using 2-aminobenzimidazole, a ligand with NH 2 -functionalized group, displacement of the ZIF-8 original ligand during de novo synthesis while preserving the ZIF-8 initial structure, which produces a novel mixed- linker ZIF material (ZIF-8-NH 2 ) with smaller nanocrystal size, controllable pore size, and enhanced hydrophilicity. A series of different mixed matrix membranes (MMMs) were fabricated by incorporating ZIF-8-NH 2 into poly(vinyl alcohol) (PVA) matrix. Various characterization techniques, such as FTIR, 1 H NMR, XRD, SEM, TGA, and Contact angle etc. were employed to demonstrate the properties of prepared ZIF nanoparticles and the MMMs. The results indicated that ZIF-8-NH 2 and the MMMs were perfectly fabricated, which were attributed to better dispersion and compatibility between them. In particular, 7-ZIF-8-NH 2 /PVA MMM exhibited a comparable total flux of 142 g/m 2 ·h and water/ethanol separation factor of 925, which were increased by 73 and 524%, on the basis of the pristine PVA membrane. In addition, different nanofillers, APTES crosslinking, ZIF-8-NH 2 loading, operating temperature, feed concentration, and membrane stability were evaluated in detail. This study might provide a promising prospect for designing MOF-based MMMs with the introduction of various functional groups.
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高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2022
·Vol. 25
·期 1
·402-409
·
IF 3.945
Ran Wang,Fengjin Zhang,Xinghang Pan,Xuming Zheng,Jiadan Xue,Yong Du,Binbin Xie
8-Hydroxy-5-nitroquinoline (NO2-QN-OH) is an antimicrobial, anti-inflammatory and anticancer agent, and has been approved for use in the treatment of diseases. Its photosensitivity, however, cannot be overlooked. The photochemistry of 8-hydroxy-5-nitroquinoline in acetonitrile is investigated using transient absorption and time-resolved resonance Raman spectroscopies. By identifying the short-lived intermediates during the photoreaction, it is clear that the Tn state NO2-QN-OH is generated in 0.8 ps via an ultrafast ISC, followed by the IC in 8.5 ps to produce the T1 state. In neat acetonitrile, the T1 state NO2-QN-OH undergoes intramolecular proton transfer and tautomerizes to form T1 state NO2-QNH-O. To our knowledge, this is the first time that the intramolecular excited state proton transfer of hydroxyl-quinolines in an aprotic polar solvent is observed.
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高影响因子
Chemistry-An Asian Journal
·
2021
·Vol. 16
·期 15
·2146-2153
·
IF 4.568
Liling Lei,Yiwei Zheng,Xichen Zhang,Yutian Su,Xi Zhou,Shishan Wu,Jian Shen
Graphical A new zinc-ion hybrid capacitor assembled by using a Zn@annealed ZIF-8 anode and ZIF-8 derived C cathode provides a capacity of 135.5 mAh g −1 and an energy density of 108.4 Wh kg −1 with a power density of 800 W kg −1 at 1.0 A g −1 . Zn is a promising anode for aqueous energy storage owing to it intrinsic superior properties such as large capacity, abundant reserves, low potential and safety. But, the growth of dendrites during charge and discharge leads to a decrease in reversibility. In addition, further development of zinc-ion hybrid capacitors (ZICs) is seriously challenging because of the lack of an exceptional cathode. Herein, we use ZIF-8 annealed at 500 °C (annealed ZIF-8) as a host material for stable and dendrite-free Zn anodes. Utilization of annealed ZIF-8 results in dendrite-free Zn deposition and stripping as a result of its porous construction, which contains trace Zn. Furthermore, we firstly proposed innovative N,O dual-doped carbon which was designed by the derived ZIF-8 (ZIF-8 derived C) as cathode for high-energy and power-density ZICs. The new ZIC assembled by Zn@annealed ZIF-8 anode and ZIF-8 derived C cathode provides a capacity of 135.5 mAh g −1 and an energy density of 108.4 Wh kg −1 with a power density of 800 W kg −1 at 1.0 A g −1 . In addition, it shows outstanding cycling stability of 91% capacity retention after 6000 cycles at 5.0 A g −1 . Moreover, the solid-state ZICs can drive LEDs and smart watches. This ZIC holds promise for the practical application of supercapacitors.
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高影响因子
ACS Sustainable Chemistry & Engineering
·
2021
·
IF 8.198
Cijun Shuai,Jun Zan,Fang Deng,Youwen Yang,Shuping Peng,Zhenyu Zhao
Zeolitic imidazolate framework-8 (ZIF-8) nanoparticles are able to act as effective reinforcements to enhance the overall performance of a poly-l-lactic acid (PLLA) scaffold due to its interface compatibility and natural degradability. Nevertheless, the fast degradation of ZIF-8 would release excessive zinc ions, which produces adverse effects on natural cell growth. In this study, a core–shell-structured nanoparticle, in which ZIF served as a core and hydroxyapatite (HA) served as a shell, was constructed by polydopamine (PDA)-induced in situ growth of HA on ZIF-8 nanoparticles, aiming to control the zinc ion release. Then, the core–shell-structured nanoparticle (ZIF-8@PDA-HA) was introduced into the PLLA scaffold using selective laser sintering. Results showed that the zinc ion concentration for the PLLA/ZIF-8@PDA-HA scaffold decreased by 65.3% after 28 days of immersion, as compared with the PLLA/ZIF-8 scaffold. Moreover, the in situ-synthesized HA possessed superior bioactivity, which effectively enhanced the mineralization ability of scaffolds and promoted cell adhesion, proliferation, and differentiation.
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DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2022
·
IF 5.304
Qingtao Wang,Shounian Cheng,Shufang Ren,Zhixiang Zheng
In this paper, a protocol of the integration of Cu doped porous carbon (Cu C N) and molecularly imprinted polymer (MIP) was proposed to develop a sensitive, selective, and stable electrochemical sensor toward the determination of norfloxacin (NFX). Field-emission scanning electron microscopy and transmission electron microscope, energy dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, X-ray diffraction, Brunauer–Emmett–Teller analysis and thermogravimetric analyzer, cyclic voltammetry, and electrochemical impedance spectroscopy were used to characterize the doping materials and the MIP film. Cu N C porous carbon was prepared by high-temperature carbonizing Cu/ZIF-8 precursor. The doping of Cu into ZIF-8 allows not only enhancing the conductivity for the sensor by giving active sites, but also favors the great porous structure and active surface area by prohibiting the structure collapse of ZIF-8 polyhedron. The MIP layer was prepared by in-situ electrochemical polymerization of dual monomers of dopamine and resorcinol on glassy carbon electrode (GCE) modified by Cu N C. For the electrochemical detecting, the condition of the ratio of two functional monomers, functional monomer to template molecular, the number of electric polymerization cycles, pH, and incubation time were optimized. The proposed MIP/Cu N C/GCE sensor allows the sensitive detecting toward NFX with the linear ranges of 0.01–0.5 and 0.5–100 μM and the limit of detection of 3.33 nM (S/N = 3). In addition, the sensor has good selectivity, repeatability, reproducibility, and stability. In terms of practical application, the sensor is feasible and robust in determination of NFX in the commercially available tablet with the average recovery of 96.72 %–103.88 % and RSD less than 5 %.
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高影响因子
Journal of Physics-Materials
·
2021
·Vol. 4
·期 4
·044003
·
IF 0
Amei Cheng,Yini Hu,Ming Yue,Junxiao Fu,Huimin Wu,Shiquan Wang,Jianwen Liu
Transition metal sulfides have been widely used as anode electrodes of lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs) due to its high theoretical capacity and low price. However, problems of huge volume expansion and poor conductivity during charging and discharging have been emerged. Herein, we design a N, C-co-doped, nano-sized, and hollow carbon-coated ZnS (ZnS-NC@C) composite using the advantages of metal organic framework (zeolitic imidazolate framework-8) structure and resorcinol-formaldehyde coating. When applied as anodes of LIBs and SIBs, it displays a high reversible capacity of 748 and 150.9 mAh g−1 after 500 cycles at the current density of 1.0 A g−1, respectively. This work could provide a promising strategy for enhancing the performance of transition metal sulfides for potential applications in LIBs and SIBs.
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DOI
RSC Advances
·
2014
·Vol. 4
·期 106
·61736-61742
·
IF 3.708
Shu-Tao Gao,Wei-Hua Liu,Ning-Zhao Shang,Cheng Feng,Qiu-Hua Wu,Zhi Wang,Chun Wang
Efficient utilization of solar energy has received tremendous attention due to the increasing environmental and energy concerns. In this paper, a plasmonic photocatalyst integrated with metal–organic framework (MOF) material, Ag/AgCl@ZIF-8, was fabricated for the first time. The unique hetero-junction structure of Ag/AgCl@ZIF-8 greatly enhanced its photocatalytic activity. Selecting RhB as a model pollutant, 98% of RhB can be degraded after 16 min under solar radiation. The relationship between the photocatalytic activity and the structure of Ag/AgCl@ZIF-8 hybrid materials was discussed and the possible reaction mechanism was proposed. The high photocatalytic activity of the hybrid material under solar radiation revealed its great application potential in directly harvesting solar energy to solve the environmental pollution issues.
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高影响因子
RSC Advances
·
2025
·Vol. 15
·期 26
·20570-20588
·
IF 4.6
Jiao-Jiao Cao,Jin-Long Ge,Yan Gao,Bo-Kai Liao
This research systematically investigates a library of UiO-66(Zr) dicarboxylate metal–organic frameworks (MOFs), functionalized with polar and nonpolar substituents (–H, –CH3, –NH2), to evaluate their potential as carriers for inhibitor encapsulation, using 8-hydroxyquinoline (8-HQ) as a model compound. The encapsulation process was conducted under vacuum, and 8-HQ uptake was quantified using UV-visible absorption spectroscopy, allowing for precise control over host–guest interactions. Quantitative assessment of 8-HQ loading within each functionalized UiO-66 variant revealed significant variations in uptake efficiency, ranging from 14.66% to 19.45% across the modified frameworks. Furthermore, a density functional theory-based quantitative structure–activity relationship (QSAR) approach was employed to identify key chemical and structural attributes of UiO-66 that significantly influence inhibitor uptake. Multivariate analysis identified two critical physicochemical parameters governing encapsulation efficiency: (1) the dipole moment of the functionalized linkers, which dictates framework-polarity-mediated adsorption, and (2) the hydrogen-bond-donating capacity, which modulates specific interactions with 8-HQ's phenolic oxygen. These descriptors exhibited strong linear correlations with experimental loading data, demonstrating that strategic enhancement of linker polarity and H-bonding capability can amplify inhibitor uptake by 10–20% compared to pristine UiO-66. The QSAR model deciphers MOF performance trends and predicts optimal functional groups via descriptor interpolation, streamlining MOF carrier design for corrosion and drug applications through targeted linker engineering.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xiaoli Pan,Qing Li,Ying Wang,Yingxi Li,Shuang Liu,Yun Duan,Huacheng Tang,Xiao Zhou,Xiaomin Lai,Fuchen Jiang,Zhen Huang,Xuebo Li,Jun Lu
Diabetic wounds represent one of the most prevalent complications in patients with diabetes mellitus. Elevated reactive oxygen species (ROS), bacterial infections, persistent inflammation, and impaired angiogenesis collectively contribute to delayed diabetic wound healing. In this study, a multifunctional, injectable, photoinitiator-free, photocrosslinkable hydrogel (G/Z@M) based on insect-derived chitosan was developed. The hydrogel system incorporated lipoic acid (LA), which possesses photopolymerization capability and potent antioxidant activity, to modify quaternized chitosan (QMCS). Through self-initiated photo-crosslinking of QMCS-LA, the hydrogel's three-dimensional network was constructed. Simultaneously, the ZIF-8@MPN nanocomposite was constructed by coating ZIF-8 with a metal-polyphenol network (MPN) functional coating formed through the coordination of epigallocatechin gallate (EGCG) with Ga 3+ . This nanocomposite was then loaded onto the QMCS-LA network. Both in vitro and in vivo experiments demonstrated that the G/Z@M hydrogel possesses great biocompatibility, antibacterial, anti-inflammatory, antioxidant, and pro-angiogenic activities, effectively promoting the healing of full-thickness skin defect wounds in MRSA-infected diabetic rats. In conclusion, the G/Z@M hydrogel presents an innovative therapeutic approach for diabetic infected wounds by simultaneously regulating oxidative stress, bacterial infection, persistent inflammation, and impaired angiogenesis.
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高影响因子
Journal of Coatings Technology and Research
·
2025
·
IF 2.8
Lei Yonglin,Liu Cheng,Zhu Xuemei,Luo Qian
Waterborne polyurethane (WPU) coatings exhibit poor water resistance and are highly permeable to corrosive media. Consequently, they may inevitably sustain damage during prolonged use, which significantly compromises their corrosion resistance. In this study, we synthesized a self-healing waterborne siloxane-modified polyurethane (WPU-Si). To develop a PU composite coating exhibiting both exceptional hydrophobicity and corrosion resistance, modified montmorillonite nanosheets and halloysite nanotubes encapsulated with 8-hydroxyquinoline were prepared. Compared to pristine WPU, WPU-Si demonstrated remarkable mechanical property enhancements, with tensile strength increasing by 293% (from 4.6 MPa to 18.1 MPa) and elongation at break enhancing by 44.5% (from 445% to 643%).The water contact angles increased from 71.04° (WPU) to 82.39° (WPU-Si), indicating enhanced hydrophobicity. All coatings demonstrated complete self-healing (100% recovery efficiency) following 12-h thermal treatment at 50 °C. The MMT-HNT/WPU-Si coating showed outstanding corrosion resistance, with 97.35% protection efficiency, due to the shielding effect of the modified montmorillonite sheets and the smart active protection provided by the release of 8-hydroxyquinoline from halloysite nanotubes. The charge transfer resistance was 3.25 × 10 7 Ω cm 2 after 30-min in 3.5 wt% NaCl solution, maintaining 6.92 × 10 5 Ω cm 2 after 30 days. This work provides constructive guidance for creating a low-cost self-healing smart PU composite coating with long-term corrosion resistance.
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高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
You Chen,Chunxiang Lu,Shuxia Yuan,Xiaodan Ren,Shijie Wu,Haozhi Duan,Ran Yuan
Lithium-sulfur batteries (LSBs) are considered a promising class of energy storage devices due to their high theoretical energy density and specific capacity. Key challenges to improving LSB performance include mitigating the shuttle effect of soluble polysulfides (LiPSs) and enhancing the conductivity of the sulfur cathode. In this study, we present a tubular material composed of porous nitrogen-doped carbon (PNC) and nitrogen-doped carbon nanotubes (NCNT) as a sulfur host (PNC/NCNT). The porous structure of PNC/NCNT provides abundant space for sulfur accommodation, while its disordered mesoporous structure and high electronic conductivity help alleviate the shuttle effect of LiPSs through nitrogen-induced defects and active sites. As a result, the PNC/NCNT/S cathode significantly enhances the poor electrical conductivity of sulfur cathodes, offering improved rate performance and robust cycling stability, with a capacity retention of 859.1 mAh g −1 after 500 cycles at 1 C and a minimal capacity fading of 0.031 % per cycle.
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高影响因子
危险品化学品经营许可证（带存储）