INORGANIC CHEMISTRY
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2022
·
IF 5.436
Yan Chen,Chunli Hu,Zhi Fang,Yilin Li,Jianggao Mao
Birefringent materials capable of modulating the polarization of light have attracted intensive studies because of their wide utilization in optical communication and the laser industry. Herein, two new lead(II)-based cyanurates, namely, Pb(H2C3N3O3)X (X = OH, F), were synthesized by hydrothermal methods, and the first halogen-containing metal cyanurate Pb(H2C3N3O3)F was successfully obtained by the rational substitution of a homovalent anion. Pb(H2C3N3O3)X (X = OH, F) belong to space group P1̅, and their structures display a neutral [Pb(H2C3N3O3)X] (X = OH, F) layer. The Pb2+ ions in Pb(H2C3N3O3)(OH) are interconnected by hydroxyl groups and oxygen atoms of cyanurate anions into a 1D [PbO(OH)]− chain, whereas the Pb2+ ions in Pb(H2C3N3O3)F are interconnected by F– anions and oxygen atoms of cyanurate anions into a 2D [PbOF]− layer. The π–π interactions between adjacent hydroisocyanurate rings and the hydrogen bonds between neighboring neutral layers provide additional stability to the structures. Luminescent studies show that Pb(H2C3N3O3)(OH) and Pb(H2C3N3O3)F emit yellow-green and blue light, respectively. Theoretical calculations unveiled their birefringences of 0.079 and 0.203@1064 nm and their band gaps of 3.96 and 4.96 eV, respectively, for OH– and F– containing materials. Obviously, the substitution of OH– by F– with the largest electronegativity can simultaneously improve both the birefringence and band gap.
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Journal of Materials Chemistry A
·
2022
·Vol. 10
·期 36
·18616-18625
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IF 14.511
Xiukun Liu,Xu Xu,Fangjia Zhang,Xiangchao Ge,Haifeng Ji,Yuqi Li,Shaorong Lu,Zhen Wen
A sustainable, reliable and self-powered anti-corrosion method for metallic structures is key to improving the operation stability and service life of equipment. In this work, a series of durable superhydrophobic fluorinated silica (F-SiO2)/epoxy resin (FE) coatings with good corrosion resistance were prepared via a simple spraying method, which were further used to fabricate a FE based triboelectric nanogenerator (FE-TENG). A synergistic anti-corrosion system for self-powered cathodic protection constructed using the superhydrophobic FE coating and a water wave-driven FE-TENG was then proposed. In a 3.5 wt% NaCl solution, the corrosion potential (Ecorr) of an aluminum (Al) sheet protected by the FE-TENG self-powered cathodic protection was slightly decreased by 80 mV. However, when the Al sheet was coated with a FE superhydrophobic coating, the Ecorr was significantly reduced by 460 mV under FE-TENG protection. Notably, the Ecorr of 304 stainless steel protected by the synergistic anti-corrosion system was dramatically decreased by ∼745 mV. Furthermore, an application in marine corrosion protection was demonstrated by using a float-like spherical FE-TENG. This work demonstrates a cost-effective and large-scale strategy for preparing a superhydrophobic FE coating, using which a self-powered synergistic anti-corrosion system is built for effectively protecting metals from corrosion.
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MOLECULES
·
2019
·Vol. 24
·期 15
·2705
·
IF 3.06
Feng Li,Sen Guo,Shanshan Zhang,Sainan Peng,Wei Cao,Chi-Tang Ho,Naisheng Bai
Bee pollen contains all the essential amino acids needed by humans. China is the largest producer of bee pollen in the world. In the present study, we identified 11 fatty acids inF. esculentumbee pollen oil by GC-MS analysis, and 16 compounds were isolated fromF. esculentumbee pollen by column chromatography and identified. A high-performance liquid chromatography-diode array detector (HPLC-DAD) method was established for the quality control ofF. esculentumbee pollen. A validated HPLC-DAD method was successfully applied to the simultaneous characterization and quantification of nine main constituents in seven samples collected from seven different areas in China. The results showed that all standard calibration curves exhibited good linearity (R2> 0.999) in HPLC-DAD analysis with excellent precision, repeatability and stability. The total amount in the samples from the seven regions ranged from 23.50 to 46.05 mg/g. In addition, seven compounds were studied for their bioactivity using enzymic methods, whereby kaempferol (3) showed high α-glucosidase inhibitory activity (IC50: 80.35 μg/mL), ergosterol peroxide (8) showed high tyrosinase inhibitory activity (IC50: 202.37 μg/mL), and luteolin (1) had strong acetylcholinesterase inhibitory activity (IC50: 476.25 μg/mL). All results indicated thatF. esculentumbee pollen could be a nutritious health food.Keywords:bee pollen;enzyme inhibitory activity;HPLC-DAD;GC-MS;quality analysis
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PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Yu Duan,Zihan Ma,Jiaxuan He,Yingying Huang,Shuo Bao,Jinlin Lu
P2-type layered cathode materials have low energy density due to low initial Na content. In this research, high sodium content P2-type cathode material Na0.8Li0.08Ni0.23Mn0.67Cu0.1O1.92F0.08 (NMC-LF), was synthesized by a simple high-temperature solid-phase method. The strong electronegativity of F allows the local TM-O bond to be transformed into a TM-F bond, and the TMO6 octahedron becomes more stable. The doping of Li+ not only maintains structural stability but also transforms the two-phase reaction in the high-voltage range into a solid-solution reaction. This leads to an effective suppression of the irreversible P2–O2 phase transition in the high-voltage region. At 20 mA·g–1, the initial discharge capacity of NMC-LF reaches 131.05 mAh·g–1. At a high current density of 200 mA·g–1, the discharge capacity reaches 101.9 mAh·g–1 and remains at 99.31% after 150 cycles. The diffusion coefficient of NMC-LF is as high as 8.67 × 10–13 cm2·s–1. Furthermore, the structural evolution during material formation is elaborated by high-temperature XRD, and it is determined that there are no impurities at 900 °C. Under the joint synergy of Li/F/Cu and the design of high sodium content, the long-cyclic and high-rate performance has been significantly improved. In-situ XRD tests show that Li/F/Cu codoping inhibits the P2–O2 phase transition and enhances structural reversibility. This provides a new idea for the research of layered cathode materials.
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高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Dongke Cai,Mingxia Tang,Shuai Jiang,Debin Yan,Yinchuan Zhu,Yan Meng,Dan Xiao,Qian Zhao,Wei Feng,Xicui Zhang
This study presents a sustainable F/O co-doped hard carbon (PD-F800) derived from panda excrement via NH 4 F-assisted hydrothermal doping for sodium-ion battery anodes. PD-F800 delivers a reversible capacity of 472.87 ± 5.1 mAh g −1 at 100 mA g −1 with an initial Coulombic efficiency of 66.2 ± 2.1 %, maintains 317.72 ± 4.0 mAh g −1 at 1000 mA g −1 , and retains 72.7 ± 3.3 % capacity after 1000 cycles. In situ XRD/Raman, EIS/DRT and GITT jointly indicate that F/O co-doping introduces non-bonded F states and regulates defect/interfacial chemistry, which lowers Na + adsorption/desorption barriers, increases Na + diffusion kinetics, and stabilizes an inorganic-rich SEI, thereby coupling fast surface-controlled storage with reversible interlayer/pore processes. This work establishes a safe, scalable route from waste biomass to high-performance anodes and clarifies the structure-interface-kinetics linkage enabling advanced Na-ion storage.
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高影响因子
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
·
2025
·
IF 2.8
Pi Duan,Li Xiang,Xu Zitian,Wang Peitong,Liang Zhiying,Li Bingying,Guo Yafen,Huang Yongsi,Song Xiaohong,Wang Junjie,Wang Xuegeng
Due to the known adverse effects of bisphenol A (BPA), bisphenol F (BPF) and bisphenol S (BPS) have been widely adopted as substitutes. However, they are now detected at significant levels globally, often at levels rivaling or exceeding those of BPA, raises concerns regarding their potential ecological and health risks. Our previous work indicated that BPS exhibits lower toxicity than BPF in Chinese medaka (Oryzias sinensis). To validate this, we compared their toxicity in Japanese medaka (Oryzias latipes) using both acute and developmental exposure tests. In the 96-hr acute test, embryos exposed to concentration gradient showed a BPF median lethal concentration of 128 mg/L, while BPS exposure resulted in high survival even at the highest concentrations. Based on the observed acute toxicity, we investigated the underlying mechanism of BPF and evaluated vitamin C rescue. Vitamin C treatment effectively improved embryos survival rates. Subsequently, in the 15-day developmental exposure, 2 μg/L BPF significantly increased yolk sac edema and malformation rates. Bisphenol exposure did not show concentration-dependent malformation increases. Transcriptomic analysis revealed BPF induced more differentially expressed genes (DEGs) than BPS at the tested concentrations (0.02, 0.2, 2 μg/L): 177, 14 and 24 DEGs were identified in BPF-treated groups, respectively. In contrast, only 4, 2, and 12 DEGs were detected in the corresponding BPS-treated groups. Further analysis of the Gene Ontology and Kyoto Encyclopedia of Genes and Genomes pathways enrichments provided further insights into the potential toxicological mechanisms of BPF. This study provides a comparative toxicity assessment of BPF and BPS, elucidates BPF's acute and developmental toxicity pathways, and offers toxicological data for risk assessment and regulation, which also provides a direction for in-depth research on toxicity mechanisms.
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PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2018
·
IF 4.439
Xiang Yu,Yu Zhang,Lan Jin,Jingyu Chen,Zhenhua Jiang,Yunhe Zhang
Polymeric piezo-damping composites with robust piezo-damping performance under high temperature steam conditions are highly desirable. In this study, we demonstrate a novel piezo-damping material, consisting of fluorinated (polyaryletherketone)-(polydimethylsiloxane) block copolymers (F-PAEK-b-PDMS) as matrix, multi-walled carbon nanotubes (CNTs) as conductive filler, and barium titanate (BT) as piezoelectric phase. Taking the advantages of hydrophobic property of PDMS and good thermal stability of F-PAEK, piezo-damping materials exhibit good stability under high temperature steam conditions. Furthermore, for the incompatibility between F-PAEK and PDMS, microphase separation appears, which can greatly increase the friction between molecules for better damping capability. Good damping performances that loss factor > 0.3 over a broad temperature range of 55–115 °C (≈60 °C) can be achieved. Those outstanding performances can effectively broaden the practical application of piezo-damping composites under harsh conditions.
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高影响因子
Journal of Nanomaterials
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2020
·
IF 1.98
Yan Zhang,Jiarong Li,Hongyuan Liu
The batch experiments of photocatalytic oxidation-reduction of bromate and ibuprofen (IBP) by graphene oxide (GO) and TiO2 heterostructure doped with F (FGT) particles were conducted. The performance and mechanism of synergistic removal of bromate and IBP by FGT were discussed. The results show that a demonstrable synergistic effect and excellent removal rate of bromate and IBP by FGT were exhibited. When pH is 5.2 and the dosage of FGT is 0.1 g/L, the reaction rate constants of bromate and IBP increased from 0.0584 min-1 and 0.4188 min-1 to 0.1353 min-1 and 0.4504 min-1, respectively, compared with the degradation of bromate or IBP alone. The reaction of photocatalytic synergistic degradation is appropriately fitted through Langmuir-Hinshelwood first-order kinetics. The mechanism of synergistic removal of bromate and IBP by FGT was discussed. And electrons (e-), hydroxyl radical (⋅OH), and superoxide radical (⋅O2-) are the main active species. The electrons play a main role in the bromate reduction, and bromine is the only reduction product, while the oxidation of IBP is the result of ⋅OH and ⋅O2-, and ⋅OH plays a key role. The recombination of electrons and holes is inhibited by simultaneous consumption of bromate and IBP, which makes full use of the redox properties of FGT and plays a synergistic role in the removal of pollutants. The results indicate that photocatalytic oxidation-reduction by FGT is a promising, efficient, and environmental-friendly method for synchronous removal of combined pollution in water.
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高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2024
·
IF 2.2
Xu Changji,He Wenbin,Xie Zhuojia,Zou Zhengguang
In this study, La 0.63 Sr 0.2 Nd 0.17 MnO 3 was synthesized by the sol-gel method, and its structural, morphological, magnetic, and magnetocaloric effects were investigated. The structural properties were analyzed by x-ray diffraction (XRD), and scanning electron microscopy (SEM) was used to characterize the morphology. An integrated magnetic measurement system was used to determine the magnetic properties. La 0.63 Sr 0.2 Nd 0.17 MnO 3 crystallized in a hexagonal crystal system with space group R -3 c . This was also confirmed by Rietveld refinement of the x-ray data from La 0.63 Sr 0.2 Nd 0.17 MnO 3 . With the doping of Nd 3+ , the cell volume decreases, which can be explained by the angles and bond lengths of the bonds between the Mn and O ions and the distortion of the lattice. Near the Curie temperature, La 0.63 Sr 0.2 Nd 0.17 MnO 3 exhibits significant magnetocaloric effects. The magnetic study of La 0.63 Sr 0.2 Nd 0.17 MnO 3 suggests that the transition from the paramagnetic to ferromagnetic phase can occur near the Curie temperature. The maximum magnetic entropy change and relative cooling power (RCP) of La 0.63 Sr 0.2 Nd 0.17 MnO 3 (298 K, 3 T) are 2.70 J/(kg K) and 135 (J/kg), respectively. The effect of f -orbitals on the magnetic properties of La 0.8 Sr 0.2 MnO 3 was investigated by first-principles calculations in density functional theory. Thus, it can be concluded that the magnetocaloric effects of the material after doping with f -orbital ions (Nd 3+ ) is enhanced compared to La 0.8 Sr 0.2 MnO 3 .
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Binbin He,Ying Fu,Yun Zu,Yunxiang Nie,Yi Mei
Fluorine (F) is a high-value resource that has been overlooked in the production of wet-process phosphoric acid (WPA) due to its high susceptibility to complexation with metal cationic impurities, hindering F efficient recovery and subsequent phosphoric acid purification. In this paper, a co-precipitation strategy is proposed for recovering F from the WPA. Varieties of combinations between metal cation (Na + , Mg 2+ and Al 3+ ) and F - with different molar ratios in aqueous and phosphoric acid systems are designed to explore the co-precipitated regulation. Results show that the simultaneously removal efficiencies of Al 3+ , Mg 2+ and F - can be higher than 90 % in the form of NaAlMgF 6 and Na 3 AlF 6 precipitations as the n(Na + ): n(Al 3+ ): n(Mg 2+ ): n(F - ) = 5: 1.5: 1: 6 in pure systems. DFT calculations further confirm that the NaMgAlF 6 precipitation is the most stable structure identified by using XRD Rietveld refinement. Based on this fact, extra Na + and F - are added into the industrial WPA, so that the Na + , Al 3+ , Mg 2+ and F - are co-precipitated in the form of NaAlMgF 6 , and the ultimate removal efficiencies can exceed 90 % under the optimal conditions. Besides, low-cost cycling recovery of Na + and F - are also investigated. These findings are promising for the efficient utilization of F resources from phosphate rock and other ores, which is of great economic and environmental significance.
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高影响因子
ADVANCED MATERIALS
·
2025
·
IF 26.8
Decheng Li,Guyue Li,Yifan Yu,Chilin Li
Fluoride ion batteries (FIBs) have garnered significant attention due to their ultrahigh theoretical energy density, dendrite-free safety, and resource abundance. Although some anion acceptors have been proposed to address the insolubility of inorganic fluoride salts, the difficulty in dissociating fluoride ions from acceptors results in short lifespan and extremely low specific capacity of FIBs. Here, a fluoride ion battery is demonstrated with unprecedented long life and ultrahigh specific capacity through the design of an acceptor-multi-F state electrolyte. The high Lewis acidity of triphenylantimony chloride (TSbCl) as a novel anion acceptor in electrolyte facilitates the complete dissociation of CsF, and the resulting TSbCl-F complex can further interact with fluoride ions to form the acceptor-multi-F states. This strategy combines the high dissociation capability for fluoride salts with the minimal thermodynamic barriers for releasing fluoride ions at electrode-electrolyte interface. This electrolyte design endows FIBs with durable reversible fluorination/defluorination reaction (3700 cycles with high coulombic efficiency of 99.5% and small voltage polarization of 30 mV) and ultrahigh reversible capacity (580 mAh g −1 after 40 cycles at 100 mA g −1 ). The high-output voltage FIBs of CuF 2 //Li configuration (with discharge plateau of 2.9 V) and larger-sized pouch-type FIBs of CuF 2 //Sn+SnF 2 configuration (with reversible capacity of 530 mAh g −1 ) are demonstrated.
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PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2022
·
IF 24.319
Xiao Yu,Mengyi Shi,Yixuan Fan,Lixia Yang,Jie Zhang,Wei Liu,Weili Dai,Shuqu Zhang,Lei Zhou,Xubiao Luo,Shenglian Luo
Mn 2 O 3 is an exceptional earth-abundant mineral that has been extensively applied in catalytic oxidation because of the strong redox couples like Mn 3+ /Mn 2+ and Mn 4+ /Mn 3+ exposed on Mn 2 O 3 surface. Herein, the catalytic activity of Mn 2 O 3 in photothermal degradation of toluene was regulated by halogens including F - , Cl -, and Br - . As the electronegativity ordered in F (3.98) > O (3.44) > Cl (3.16) > Br (2.96), F - doped Mn 2 O 3 overperforms Cl - doped and Br - doped Mn 2 O 3 in decomposing toluene. DFT theoretical calculation illustrates that F - attracts the shared electrons from Mn to itself, the deviated charge center stretches the adjacent Mn-O bonds and boosts the generation of abundant oxygen vacancies, helping to strengthen the catalytic activity of Mn 2 O 3 . Conversely, Mn-O bonds are shortened by Cl - and Br - that have lower electronegativity than O. The multiple electrons circling Cl - and Br - push Mn towards O and squeeze Mn-O bonds, resulting in the formation of passivated Mn 2 O 3 . In conjunction with Mn redox couples and oxygen vacancies, 99% of 400 ppm toluene can be eliminated by F - doped Mn 2 O 3 , corresponding mineralization rate is high up to 95.8%.
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