APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Minjing Chen,Wenyang Wang,Zhepu Shi,Zhaoping Liu,Cai Shen
Solid electrolyte interphase (SEI) grown on electrode surfaces during charge-discharge processes plays a key role in the cycle performance of lithium-ion batteries. In-situ study of cathode electrolyte interphase (CEI) is challenging due to the complicated interfacial reactions on the cathode materials including gas formation and the formation of thin CEI film. Herein, we applied the electrochemical atomic force microscope (EC-AFM) to study the interfacial changes in high energy density Li- and Mn-rich (LMR) materials with an F-rich electrolyte (1 M LiPF 6 FEC/FEMC/HFE). The study indicated that the electrolyte formed a uniform and dense passivation CEI film on the LMR material surface at high voltage. The CEI is composed of inorganic LiF substrate as confirmed by X-ray photoelectron spectroscopy (XPS). The assembled battery (LMR||Li) shows an excellent cycle performance and maintains capacity at 85.5% after 100 cycles, compared to the 13.7% retention rate of commercial carbonate electrolyte (1 M LiPF 6 EC/EMC/DMC).
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Jianbo Li,Guijie Yin,Yannan Wang,Yang Xiang,Ning Yu,Xu Li,Yinzhu Jiang,Maowen Xu,Xuan Zhang
To meet high-standard requirements for next generation lithium-ion batteries (LIBs), reinforce the functions of separator are becoming imperative and urgent. In this work, we successfully fabricated a multifunctional separator, namely, UIO-66-F@PP, which enabled the test battery to achieve a significant improvement in electrochemical performance and safety. The modified separator UIO-66-F@PP can finely regulate the ion transfer by facilitating the Li + transport due to the orderly porous structure and the negatively charged functional group (−F), resulting in a higher ion conductivity ( σ ) of 0.91 mS cm −1 and a larger Li + transference number ( t Li + ) of 0.78. By analyzing the Sand’s time ( t sand ), it was found that the lithium dendrite was suppressed by the modified separator UIO-66-F@PP. Besides, the symmetric battery Li//Li assembled with UIO-66-F@PP exhibited a stable lithium plating/stripping cycle over 2000 h. The battery of LFP//Li with UIO-66-F@PP demonstrated an excellent rate performance with a discharging specific capacity of 114 mAh g −1 at 10C. Moreover, the burning and heat shrinkage tests showed that the modified separator UIO-66-F@PP has a self-extinguishing character and a high thermal stability even at 190 °C, indicating that the modified separator has the capability to endow the LIBs with high safety.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
Acta Biomaterialia
·
2024
·
IF 9.4
Qingliang Yang,Xuhui Zhou,Bang Lou,Ning Zheng,Jiale Chen,Gensheng Yang
Despite the booming progress of anticancer nanomedicines in the past two decades, precise tumor-targetability and sufficient tumor-accumulation are less successful and still require further research. To tackle this challenge, herein we present a biomolecular motor (F O F 1 -ATPase)-embedded chromatophore as nanorobot to efficiently overcome biological barriers, and thoroughly investigate its chemotactic motility, tumor-accumulation ability and endocytosis. Chromatophores embedded with F O F 1 -ATPase motors were firstly extracted from Thermus thermophilus, then their properties were fully characterized. Specifically, two microfluidic platforms (laminar flow microchip and tumor microenvironment (TME) microchip) were designed and developed to fully investigate the motility, tumor-accumulation ability and endocytosis of the chromatophore nanorobot (CN). The results from the laminar flow microchip indicated that the obtained CN possessed the strongly positive chemotaxis towards protons. And the TME microchip experiments verified that the CN had a desirable tumor-accumulation ability. Cellular uptake experiments demonstrated that the CN efficiently promoted the endocytosis of the fluorescence DiO into the HT-29 cells. And the in vivo studies revealed that the intravenously administered CN exhibited vigorous tumor-targetability and accumulation ability as well as highly efficient antitumor efficacy. All the results suggested that F O F 1 -ATPase motors-embedded CN could be promising nanomachines with powerful self-propulsion for overcoming physiological barriers and tumor-targeted drug delivery. Statement of significance In this study, we demonstrated that F O F 1 -ATPase-embedded chromatophore nanorobots exhibit a strong proton chemotaxis, which not only plays a key role in tumor-targetability and accumulation, but also promotes tumor tissue penetration and internalization. The results of in vitro and in vivo studies indicated that drug-loaded chromatophore nanorobots are capable to simultaneously accomplish tumor-targeting, accumulation, penetration and internalization for enhanced tumor therapy. Our study provides a fundamental basis for further study on F O F 1 -ATPase-embedded chromatophore as tumor-targeting drug delivery systems that have promising clinical applications. It offers a new and more efficient delivery vehicle for cancer related therapeutics.
研究领域:
生物医学工程
·
肿瘤学
·
纳米医学
✓ 已验证
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Chang Jiang,Linzhao Ma,Guo Tian,Longxiang Jiang,Hongzhi Xiao,Qianbiao Du,Hao Li
Novel spinel-type Li 2 Mg 2 Ga 2 Ti 3 O 12 ceramics were prepared by the solid-state method. Rietveld refinement revealed that the Li 2 Mg 2 Ga 2 Ti 3 O 12 ceramics possess a cubic spinel structure with the F d 3 ‾ m ( 227 ) space group. Raman spectrum analysis indicated that the Q × f and FWHM of ceramics exhibit an inverse relationship. According to the P-V-L theory, the Ti-O bond has the highest percentage of contribution to both of bond ionicity and lattice energy, indicating a significant impact on ε r and Q × f , respectively. The Li 2 Mg 2 Ga 2 Ti 3 O 12 ceramics showed the best microwave dielectric properties ( ε r = 15.72, Q × f = 69,633 GHz, and τ f = −20 ppm/°C), sintering at an optimum temperature of 1200 °C. Additionally, a dielectric resonance antenna, on the basis of Li 2 Mg 2 Ga 2 Ti 3 O 12 ceramics was designed and simulated.
研究领域:
材料科学
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2015
·Vol. 22
·期 17
·13077-13082
·
IF 2.828
Yang J.,Li X. D.,Meng W. J.,Lu S. Y.,Chen T.,Yan J. H.,Buekens A.,Olie K.
In this study, simulated fly ash containing CuO/CuCl 2 was heated at 350 °C in a flow of N 2 and also in a nitrogen flow containing 10 vol% H 2 , to evaluate the influence of hydrogen adding on dioxin formation. The total polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/F) output derived from the CuO sample under N 2 and 10 % H 2 was 7.382 and 0.708 ng/g, respectively. As for CuCl 2 , it was 589 and 46.1 ng/g, respectively. The results show that the hydrogen adding has a good inhibition effect on PCDD/F formation; the inhibition rate was higher than 90 % for PCDD/Fs. HCl and NH 3 were detected by Gasmet in the flue gas; the probable inhibition mechanism of hydrogen reaction was proposed, based on our measurements and others’ researches.
研究领域:
环境科学
·
化学工程
·
污染控制
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MACROMOLECULAR RESEARCH
·
2025
·
IF 3.4
Lv Changshun,Wang Qingshuang,Li Zhaoxin,Jiang Xue,Liu Tianhui,Xu Xiaoru,Feng Xiangru
Chitosan-based pluronic thermo-sensitive hydrogels represent a class of biomaterials characterized by their favorable biocompatibility and exceptional thermo-sensitive properties. The purpose of this study was to investigate their potential as carriers for embedding α-Mangostin (α-M), a bioactive compound derived from mangosteen peel, with the aim of inhibiting methicillin-resistant Staphylococcus aureus (MRSA). During the synthesis process, chitosan (CS), tannic acid (TA), pluronic F-127 (F127), and pluronic F-68 (F68) were combined to form the thermo-sensitive hydrogel, into which α-M was physically incorporated through crosslinking (designated as CTFF@α-M). We are very interested in the results obtained during the research process. The results of fluorescence imaging in small animals showed that CTFF extended the residence time of α-M in the body from 3 to 9 days, improved the bioavailability of α-M, and achieved the goal of sustained drug release. In vitro antibacterial experiments showed that CTFF@α-M (30 mg/mL) had an inhibition rate of 79.69% against MRSA, which was higher than CTFF@amoxicillin (AM) (5 mg/mL) increased by 71.68%. This study is expected to provide new insights into the integration of biomaterials and natural therapy, and emphasize the therapeutic potential of thermosensitive hydrogels and α-M in antibacterial treatment, especially in the fight against MRSA infection. Graphic In this study, a CTPP hydrogel was prepared using a physical cross-linking method, and α-M was encapsulated to create the CTPP@α-M drug-loaded hydrogel. Various characterization techniques, including SEM, FT-IR, and XRD, were employed to confirm its physicochemical properties. The hydrogel exhibited excellent water solubility, swelling capacity, sustained release characteristics, and biocompatibility, with the ability to transform into a semi-solid gel at 37 °C. In vitro experiments demonstrated that the CTPP@α-M hydrogel showed a powerful inhibitory effect on MRSA, exhibiting strong resistance to antibiotic resistance. Infection experiments using a mouse model confirmed that CTPP@α-M not only accelerated wound healing but also significantly reduced bacterial counts at the wound site. Moreover, the CTPP@α-M group significantly decreased the expression of pro-inflammatory cytokines while increasing the levels of anti-inflammatory factors, indicating its promising anti-inflammatory properties. Collectively, these data suggest that CTPP@α-M is a highly effective antibacterial thermo-sensitive hydrogel with excellent performance.
Diagram of the preparation of protocol CTFF@α-M and the treatment process of bacterial infection wounds
研究领域:
生物材料
·
药学
·
抗菌治疗
·
伤口修复
·
纳米医学
·
高分子科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
·
2025
·
IF 3.7
Ruomu Chen,Yutian Gan,Wanting Huang,Chenyang Wang,Junhong Ge,Yuanyuan Cheng,Wenjing Qiao,Jiandong Jiang,Kai Chen
Bisphenol F (BPF) is an emerging environmental pollutant widely present in surface water and wastewater systems. Microbial activity is crucial in driving its degradation, offering a potential avenue for mitigating its environmental impact. Although the degradation pathway for BPF has been identified in various bacteria, the biodegradation mechanisms remain unclear. In this study, we isolated a highly efficient BPF-degrading strain of Sphingobium yanoikuyae DN12, which could utilize BPF as the sole carbon and energy source for growth, from a river sediment in Anhui Province, China. Through ultra-performance liquid chromatography high-resolution mass spectrometry (UPLC-HRMS) analysis, we found that oxidation and hydrolysis are key steps for BPF biodegradation. Utilizing whole-genome sequencing, comparative transcriptomics analysis, and biochemical identification, a gene cluster bpf was identified to be involved in BPF degradation. BpfAB is a two-component oxidoreductase responsible for converting BPF to 4,4'-dihydroxybenzophenone (DHBP). BpfC is a Baeyer–Villiger monooxygenase responsible for converting DHBP to 4-hydroxyphenyl-4-hydroxybenzoate (HPHB). Isotope tracing demonstrated that the oxygen atom incorporated by BpfAB originates from water, whereas that incorporated by BpfC derives from molecular oxygen (O2). BpfD is an α/β hydrolase responsible for converting HPHB to 4-hydroxybenzoate and 1,4-hydroquinone. Analysis of the taxonomic and habitat of 325 prokaryotic genomes revealed that BpfA-like homologs are predominantly found in the phylum Pseudomonadota, primarily inhabiting soil and aquatic environments. This study enhances our understanding of the biodegradation mechanism of BPF and provides guidance for the effective remediation of BPF-contaminated environments.
研究领域:
环境微生物学
·
生物修复
·
微生物代谢
·
环境科学
·
分子生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MOLECULES
·
2022
·Vol. 27
·期 3
·1098
·
IF 4.927
Zhe Liu,Hong Wang,Zhu Chen,Ying Ye,Yuwei Wang
Chiral cholesteric molecular tweezer 7d was synthesized and its influences on changes in the ultraviolet (UV) and fluorescence spectra of various anions were investigated. The results displayed that molecular tweezer 7d selectively recognized F−ions in dimethyl sulfoxide with a detection limit of 5.14 μmol/L, while other anions had little interference. On this basis, a method for the rapid detection of F−ions by host molecular tweezer 7d was established, and the naked-eye detection of F−was realized through the unique yellow color of the complex solution. According to the determination of F−ions in real food samples, it was proved that the established method had good application prospects in F−ion detection.Keywords:cholesteric molecular tweezer;fluoride ions;naked-eye detection;specific recognition;food samples
研究领域:
分析化学
·
食品安全
✓ 已验证
DOI
PubMed
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 92
·75333-75340
·
IF 3.84
Qingqing Wang,Xiusheng Zhang,Yunlong Xu,Dong Liu,Hui Dong,Yang Zhang
A series of Ni and F ion doped LiMn2O4 composite cathode materials are synthesized via a sol–gel method with citric acid as the chelating agent. The morphology and structure of LiNixMn2−xO4−yFy were characterized by XRD, SEM, EDS and the electrochemical performance was tested and characterized by CV and EIS. The results showed that Ni and F ions were uniformly dispersed in the lattice without changing the structure and morphology of LiMn2O4. LiNi0.03Mn1.97O3.95F0.05 exhibits an excellent electrochemical performance among all the samples, and delivers an initial discharge capacity of 120.3 mA h g−1 at 1C and with a retention of 94.5% (25 °C) and 80.4% (55 °C) after the 100th cycle respectively. The results demonstrated that the dual-doping of Ni and F ions in lithium manganate can prevent the manganate from dissolving in the electrolyte and enhance the cycling performance at elevated temperatures, exhibiting excellent performance at different discharge rates.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Nuclear Materials and Energy
·
2021
·
IF 2.32
Ke Shi,Jian Yang,Qingsong Chen,Yongduo Sun,Wei Zhang,Kun He,Rui Tang,Zhien Ning,Jiali Liao,Yuanyou Yang,Ning Liu,Jijun Yang
The corrosion characteristics of 12Cr2W2Mn Ferritic/martensitic (F/M) steel before and after Au-ions irradiation in static lead–bismuth eutectic (LBE) have been investigated at 400 °C for 100 h. The results show that the samples without irradiation have many unequal size Fe 3 O 4 particles and little Cr-rich oxide after LBE corrosion test, and the thickness of corrosion layer is 4.4 μm. The irradiation samples display plenty compact triangular (Fe,Cr) 3 O 4 and some Cr-rich oxide, and the thickness of corrosion layer is 4.4 μm with some cracks. Au-ions irradiation enahnced the LBE corrosion of F/M steel, which could be attributed to the irradiation defects provide diffusion path of O atoms in liquid LBE. A schematic model was presented to understand the effect of irradiation damage on LBE corrosion behavior of F/M steel.
研究领域:
材料科学
·
核工程
·
腐蚀科学
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2013
·
IF 3.777
Zhen Zhao,Yunlong Xu,Mandi Ji,Huang Zhang
F-doped Li 4 Ti 5 O 12 anode materials in the form of Li 4 Ti 5 O 12− x F x (0 ≤ x ≤ 0.5) are synthesized successfully via a solid-state reaction. The structure and electrochemical properties of the as-prepared powders are investigated. The Li 4 Ti 5 O 12− x F x ( x = 0.3) sample exhibits an outstanding electrochemical performance among all the samples in a potential range from 0.01 to 2.5 V, and delivers higher discharge capacity and better long-term cycling stability compared with the pristine Li 4 Ti 5 O 12 . The initial specific discharge capacity is 234.5 mAh g −1 at a density of 85 mA g −1 , and remains about 138 mAh g −1 over 500 cycles when the current density increases to 340 mA g −1 . The excellent electrochemical performance could be attributed to the substitution of F − into O 2− site, which can increase the amount of Ti 3+ /Ti 4+ mixing as charge compensation, leading to the decrease of the charge transfer resistance and improvement of the lithium ion diffusion in Li 4 Ti 5 O 12− x F x .
研究领域:
材料科学
·
电化学
·
储能
✓ 已验证
DOI
高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2016
·Vol. 18
·期 20
·14046-14054
·
IF 4.449
Qingxin Zeng,Tingting Yan,Kai Wang,Yinyan Gong,Yong Zhou,Yongli Huang,Chang Q. Sun,Bo Zou
In situ Raman spectroscopy revealed that transiting H2O/NaX (∼64) solutions into an ice VI phase and then into an ice VII phase at a temperature of 298 K requires excessive pressures with respect to pure water. The increase of the critical pressures varies with the solute type in the Hofmeister series order: X = I > Br > Cl > F ∼ 0. The results suggest that the solute hydration creates electric fields that lengthen and soften the O:H nonbond and meanwhile shorten and stiffen the H–O bond through O–O Coulomb repulsion. Compression, however, does the opposite to solute electrification upon the O:H–O bond relaxation. Therefore, compression of the aqueous solutions recovers the electrification-deformed O:H–O bond first and then proceeds to the phase transitions, which requires excessive energy for the same sequence of phase transitions. Ice exclusion of solute disperses the frequencies of characteristic phonons and the critical pressures with unlikely new bond formation.
研究领域:
物理化学
·
高压科学
·
材料科学
·
光谱学
·
水溶液物理
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）