AQUATIC TOXICOLOGY
·
2025
·
IF 4.3
Hongbo Yang,Chan Xu,Jieyu Song,Jin Li,Chan Zhang,Chunli Teng,Kai Ma,Feng Xie
Perfluorooctane sulfonic acid (PFOS) and its alternative 6:2 chlorinated polyfluoroethersulfonate (6:2 Cl-PFESA, also known as F-53B), are frequently detected in a variety of environmental and human samples. These substances have been associated with hepatotoxic effects, including disorders in lipid metabolism and oxidative stress. However, the molecular mechanisms underlying the causal relationship between exposure to F-53B and hepatotoxicity remain inadequately understood. This study investigated the toxicokinetics and mechanisms of hepatotoxicity associated with prolonged exposure to F-53B in adult Chinese rare minnows. Specifically, 5-month-old adult Chinese rare minnow was exposed to concentrations of 10 μg/L and 200 μg/L of F-53B for a duration of 28 days for bioaccumulation assessment, followed by a 14-day period for metabolic evaluation. The findings indicated that the bioaccumulation of F-53B in the tissues was positively correlated with the exposure concentrations. The logarithmic bioconcentration factor (Log BCF28d) was determined to be 2.67 ± 0.02 for the low concentration group and 2.27 ± 0.01 for the high concentration group. The calculated half-lives (t 1/2 ) were 18.50 ± 1.67 days and 21.38 ± 0.31 days for the respective concentration groups. F-53B protein exhibited a distinct tissue-specific distribution in adult Chinese rare minnow, with the following order of enrichment: Blood > Liver > Gonad > Gill > Intestine > Brain > Muscle. F-53B was primarily concentrated in the blood and liver, where the protein content was significantly higher. Exposure to F-53B for 28 days significantly elevated biochemical levels associated with lipid metabolism and increased the activities of the enzymes FAS, PPARα, and ACC in the liver. This exposure also resulted in impairment of the hepatic oxidative system in the Chinese rare minnow, with F-53B significantly reducing most of the measured markers related to oxidative stress (e.g., GSH, SOD, CAT, and MDA). Proteomic analysis indicated that the toxicity of F-53B regulates the expression of proteins across several functional classes. Based on the functional information of the differential proteins provided in UniProt and KEGG, they were categorized into five main categories: Cellular Processes, Environmental Information Processing, Genetic Information Processing, Metabolism, and Organismal Systems. This study indicate that F-53B is bioaccumulative and persistent in Chinese rare minnow, and can further induce oxidative stress and lipid metabolism disorders. Combined with proteomic research methods, the toxicological effects of F-53B on Chinese rare minnow can be better explained.
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高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2020
·
IF 4.551
Xiaojun Deng,Ping Zhou,Xiayan Yan,Renjin Xiong,Huaqin Kou,Wenhua Luo
To spare the use of OSDA and fluorides, for the sake of reducing cost and environmental conservation, a green and efficient synthesis recipe of low-silica CHA zeolites has been demonstrated, without using seeds or any other zeolites. The main factors that determine the formation of CHA zeolites have been investgated systemmatically, and several rules are obtained. (i) just considering simple memallic cations acting as the SDA , K + is indispensable for the formation of CHA framework, with noting that K + can also direct to MER topology. (ii) working as catalyst or minerization agent, OH − and F − function almost identically, but when the concentration of F − has reached a really high level or even only F − was used, CHA framework can not form because the intermediate fluoride complexes are inclined to produce small melecules of fluoride salts with morderate solubility over to enter the zeolite framework. (iii) at conditions of this work, the second stirring after the RT aging should be adopted since the contrastive tests have showed the benifits of the second stirring in making fewer or smaller impurity grains. (iv) when the concentration of K + is too high in reactive gels, with the other same conditions, MER over CHA framework is preferentially to form. (v) it is reasonable to consider the as-synthesized K-CHA materials can be used to research the novel “trapdoor” effect later. The authors considered the discussions and conclusions would offer some beneficial references to the green synthesis of zeolites and further understanding of the mechanism of hydrothermal treatment .
研究领域:
材料科学
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环境化学
·
无机化学
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Yue Su,Lifang Yuan,Bo Wang,Sijian Wu,Yahong Jin
Metal halide perovskites (MHPs) have sparked ongoing research interest due to their high-performance optoelectronic properties. However, blue-light excitable near-infrared (NIR) emitting MHPs is still inaccessible and the achievement of robust thermal-quenching resistance so far remains a huge challenge. In this work, we report on the synthesis of lead-free all-inorganic Mn 2+ -based perovskite-like single crystals using the designed nonstoichiometric precursor ratio. The special crystal structure endows Mn 2+ with efficient blue light excitation and red emission, which enables the capabilities of a good matching with commercial blue LED chips and an efficient sensitization for Ln 3+ emitters. The incorporations of Yb 3+ , Er 3+ , and Ho 3+ functionalize the CsMnCl 3 single crystals with multiple NIR emissions by virtue of feeding the energy from Mn 2+ to Ln 3+ via multi-channels. Most remarkable is the achievement of the robust thermal-quenching resistance, exhibiting (near-) zero-thermal-quenching and even anti-thermal quenching, of the Ln 3+ NIR emissions above room temperature . Finally, as a proof-of-concept study, a prototype of an NIR-LED device was fabricated. This work not only provides a general strategy to unlock the blue-light excitable NIR emission from f-f transitions of Ln 3+ ions, and a fundamental understanding of the sensitization-activation mechanisms in Ln 3+ -functionalized manganese (Ⅱ)-based perovskite-like phosphor, but also endows the MHPs with optical functionalities for the future high-potential applications, such as NIR phosphor-converted LEDs, and optical telecommunication.
研究领域:
材料科学
·
光电学
·
光子学
·
固体物理
·
无机化学
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2024
·Vol. 35
·期 27
·1-9
·
IF 2.8
He Chuansheng,Li Yingxiang,Wang Fei,Hou Zegui,Liu Wei,Liang Deyin,Tang Bin,Fang Zixuan,Shi Zitao,Chen Jingjing,Li Hao
For the timely transmission of signals, the research of low dielectric constant microwave ceramics is essential. In this study, a new type of low-permittivity Lu 2 MgAl 4 SiO 12 microwave dielectric ceramic was prepared by traditional solid-phase method. The successful synthesis of Lu 2 MgAl 4 SiO 12 ceramics with cubic crystal system and space group Ia-3d (230) was determined by XRD and Rietveld refinement. SEM observation confirmed the garnet structure of Lu 2 MgAl 4 SiO 12 ceramics, and verified the dense structure of the ceramic samples with a relative density of 99.1%. In addition, the influence of relative density and packing fraction on Q × f was studied by analyzing the Lu 2 MgAl 4 SiO 12 system. The findings revealed that τ f was affected by the valence state of V Si-O bond. Finally, Lu 2 MgAl 4 SiO 12 sample sintered at 1490 °C demonstrated notable microwave properties ( ε r = 9.13, Q × f = 15,100 GHz, τ f = –47.1 ppm/°C).
研究领域:
材料科学
·
无机非金属材料
·
介电材料
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微波技术
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陶瓷工程
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晶体结构
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高影响因子
CERAMICS INTERNATIONAL
·
2025
·Vol. 51
·期 30
·63013-63021
·
IF 5.6
Ning Zhang,Junqi Chen,Ning Guan,Huaicheng Xiang,Ying Tang,Yuandong Qin,Liang Fang
Two novel ceramics, Li 2 Mg 2 Ga 2 Ti 3 O 12 (LMGT) and Li 2 Zn 2 Ga 2 Ti 3 O 12 (LZGT), featuring a spinel structure, were synthesized utilizing the solid-state method. Comprehensive characterization confirms that LZGT ( P 4 3 32) forms a B-site 1:3 ordered spinel, while LMGT ( Fd -3 m ) adopts a disordered spinel structure. The ceramics exhibit outstanding microwave dielectric properties, characterized by low ε r of 14.92 and 19.11, high Q×f of 120,000 and 93,800 GHz, and negative τ f of −40.21 and −32.83 ppm/°C for LMGT and LZGT, respectively. The observed ε r values significantly exceed theoretical values due to underestimated Ti 4+ polarizability along with the rattling effect of Ti 4+ and Ga 3+ . Q×f values correlate with packing fraction, lattice energy, and electrical properties. The negative τ f values stem from dominant positive τ ε and τ αm contributions. Utilizing LMGT with ultra-low loss, a dielectric resonator antenna was designed, achieving a radiation efficiency of 93.01 % and a gain of 6.12 dBi at 6.60 GHz, highlighting significant potential for C-band communication satellite applications.
研究领域:
材料科学
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无机非金属材料
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电子功能材料
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微波技术
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天线工程
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固态化学
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高影响因子
ACS Synthetic Biology
·
2025
·
IF 3.9
Jing Wu,Ziqian Xiao,Yuhui Du,Minglan Luo,Jiacheng Zhang,Pei Guo,Zhipeng Chen,Binyuan Yang,Tingjian Chen
Aptamer-based sensors (aptasensors) have been extensively employed in biosensing and diagnostics. However, the broader application of aptasensors fabricated with DNA and RNA aptamers has been limited due to the intolerance of DNA and RNA to nucleases in biological fluids. A majority of sugar-modified nucleic acids, in particular 2’-F and 2’-OMe-modified nucleic acids, demonstrate a remarkable resistance to nuclease degradation and thus hold great potential in the development of more stable aptamers and aptasensors. In this work, employing enzymes including a laboratory-evolved polymerase for 2’-modified nucleic acids, we carried out systematic evolution of ligands by exponential enrichment (SELEX) experiments to obtain 2’-F/OMe-RNA aptamers for Bacillus cereus 5/B/6 metallo-β-lactamase (B. cereus 5/B/6 MBL), a crucial marker of many penicillin-resistant strains. Three aptamers composed of 2’-OMe-A, 2’-F-U, 2’-F-C, and 2’-OMe-G nucleotides (Apt-FUC1, Apt-FUC2, and Apt-FUC3) have been obtained and systematically characterized. All of them exhibited excellent target binding affinities, with equilibrium dissociation constant (Kd ) values of 95.9, 70.0, and 81.3 nM, and outstanding biological stability. Combining FAM-labeled Apt-FUC1, Apt-FUC2, and Apt-FUC3 with graphene oxide (GO), which could quench the fluorescence of FAM, we successfully constructed three sensitive and biologically stable 2’-F/OMe-RNA aptasensors for B. cereus 5/B/6 MBL, with the limit of detection (LOD) values of 0.38, 0.27, and 0.29 nM. Moreover, these three aptasensors all demonstrated good specificity for target detection in biological samples. This work has established a streamlined strategy for generating stable 2’-F/OMe-RNA aptamers and aptasensors, which should broaden the application of sugar-modified nucleic acids in biosensing and diagnostics.
研究领域:
分子诊断
·
核酸工程
·
生物传感器
·
酶检测
·
抗生素耐药性
·
合成生物学
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DOI
PubMed
高影响因子
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
·
2020
·Vol. 20
·期 2
·779-788
·
IF 1.134
Fan Ji-Min,Lei Yun-Yu,Gu Zhan-Yong,Zhang Bing,Yin Shu,Zhao Zhi-Huan
N and F co-doped La-TiO2 (La-TONF) samples were prepared through the solvothermal method by using HMT and NaF as precursors. The obtained samples were characterized by UV-Vis DRS, XRD, XPS and PL measurements for light-harvesting properties, crystal phase and optical characteristics,
respectively. Interestingly, the TONF sample had a different fluorescence emission intensity than the TON or TOF samples, thus suggesting a clear synergistic effect of N and F co-doping. The optimal doping amount of La was 2 wt.%, and the absorption edge was red-shifted from 453 nm to 464
nm for La-TiO2 and La-TONF. The photocatalytic activity was evaluated by degradation of MO and oxidation of TMB under visible light irradiation. La-TONF exhibited excellent photocatalytic activity and a degradation rate of 92.4%, 4.4 times that of undoped TiO2 (20.8%).
The photocatalytic degradation activity remained above 85.8%, even after five runs. In addition, the MO photodegradation catalyzed by La-TONF followed first order kinetics. According these results, a possible synergistic effect mechanism for the enhanced photocatalytic performance is proposed.
研究领域:
材料科学
·
环境科学
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PubMed
高影响因子
RARE METALS
·
2025
·
IF 11
Haoran Li,Xin Li,Qilin Gu,Shiyou Zheng
en Transition metal-based amorphous/crystalline (a/c) heterostructured catalysts have garnered significant attention due to their exceptional activity, stability, and cost-effectiveness. However, the precise synergistic regulation of interfacial composition and phase states remains challenging. Herein, we propose an innovative strategy for the controllable synthesis of a/c heterostructures using MIL-100(Mn) template. By leveraging the intrinsic coordination disparity between Ni 2+ and Fe 3+ to drive phase separation, combined with F − mediated ion exchange-phosphidation synergy, we successfully constructed an amorphous FeP x /crystalline Ni 2 P heterostructure (a-(F, Fe)P x /Ni 2 P) with precise compositional control. Systematic investigations reveal that F − not only enhances metal ion exchange through complex stabilization but also induces amorphous/crystalline phase separation via electronic modulation. Meanwhile, a deep reconstruction process occurs under high voltage, transforming the catalyst into active F-Fe/NiOOH species, which further enhances the catalytic activity and durability. Benefiting from the synergistic effects of heterointerface electronic coupling and deep reconstruction, the as-prepared a-(F, Fe)P x /Ni 2 P catalyst exhibits exceptional oxygen evolution reaction (OER) performance in 1 M KOH, delivering an ultralow overpotential of 278 mV at 30 mA cm −2 and maintaining excellent stability over 100 h with negligible degradation. This work establishes a novel “coordination difference-driven, fluorine-mediated” interface engineering strategy, offering valuable insights for the rational design of high-performance heterostructured electrocatalysts. 摘要 zh 基于过渡金属的非晶/晶体异质结构催化剂因其卓越的活性、稳定性和成本效益而备受关注。然而,对其界面组成与相态的精确协同调控仍面临挑战。在此,我们提出了一种利用MIL-100(Mn)模板可控合成非晶/晶体异质结构的新颖策略。通过利用Ni 2+ 与Fe 3+ 之间的本征配位差异驱动相分离,并结合F − 介导的离子交换-磷化协同作用,我们成功构建了具有精确组分调控的非晶FeP x /晶体Ni 2 P异质结构(标记为a-(F, Fe) P x /Ni 2 P)。系统研究表明,F − 不仅通过络合稳定作用增强了金属离子交换效率,还通过电子调控诱导了非晶/晶体相分离。同时,催化剂在高电位下发生深度重构过程,转变为活性的F-Fe/NiOOH物种,从而进一步增强了催化活性与耐久性。受益于异质界面电子耦合与深度重构的协同效应,所制备的a-(F, Fe)P x /Ni 2 P催化剂在1 M KOH电解液中表现出优异的析氧反应性能,在30 mA cm −2 电流密度下仅需278 mV的极低过电位,并能稳定运行超过100 h而无明显衰减。本研究确立了一种全新的“配位差异驱动、氟离子介导”的界面工程策略,为合理设计高性能异质结构电催化剂提供了有价值的见解。
研究领域:
材料科学
·
电化学
·
纳米技术
·
能量存储与转换
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2021
·Vol. 139
·期 14
·51906
·
IF 3.125
Bin Du,Daodao Xue,Rubai Luo,Kenan Yang,Huailin Li,Shisheng Zhou
Epoxy resin is one of the most important matrix materials in the field of high performance composites. Its mechanical strength, toughness, and thermal stability are very important to the properties of composites. In this paper, the improvement of epoxy resin properties by carbon nanotubes (CNTs) is mainly studied. First, aniline trimer (AT) and polyethylene glycol octyl phenyl ether (Triton X-100) are combined to modify CNTs. Then the dispersed CNTs (treated-CNTs) are used to prepare bisphenol F epoxy nanocomposites. The dispersion of CNTs and fracture surface of composites are analyzed by SEM and TEM. The combination of AT and Triton X-100 with CNTs is analyzed by UV–vis and FTIR. The mechanical, thermodynamic, tribological properties, and crosslinking density changes of epoxy composites are evaluated. The results show that AT and Triton X-100 are successfully bonded to the surface of CNTs. The dispersion effect of treated-CNTs in the composites is better than that of the original CNTs, which have a better reinforcing and toughening effect on the composites. The introduction of treated-CNT reduces the crosslinking density and glass transition temperature of the composites, but does not affect the thermal stability of the composites before 300°C.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2011
·
IF 2.13
Xin Tian,Zhengping Dong,Yifan Huang,Jiantai Ma
In this work, molecular logic element modified multifunctional silica nanoparticles having high magnetization have been successfully prepared. These multifunctional nanoparticles were characterized by Fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), Elementary analysis, X-ray powder diffraction (XRD) and Vibrating sample magnetometer (VSM). The characterization datum indicated that the organic ligand was successfully grafted on the surface of the magnetic silica nanoparticles . The fluorescent changes of the hybrid material upon the addition of cations (H + , F − and their mixture) is utilized as an INHIBIT logic gate at the molecular level, using the fluorescence intensity signal as output.
研究领域:
纳米医学
·
生物传感器
·
分子诊断
·
化学生物学
·
智能材料
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DOI
高影响因子
NANO
·
2017
·
IF 1.025
Aijia Wei,Wen Li,Lihui Zhang,Xiaohui Li,Xue Bai,Zhenfa Liu
Zn 2 + and F − ions are successfully used to modify pure Li 4 Ti 5 O 1 2 via a co-precipitation method followed by calcination at 400 ∘ C for 5 h in an Ar atmosphere in order to further investigate the reaction mechanism of the fluoride modification process. Zn 2 + and F − co-modified Li 4 Ti 5 O 1 2 samples are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and electrochemical measurements. After the modification process, no ZnF 2 coating layer is formed on the surface of Li 4 Ti 5 O 1 2 , instead, F − ions react with Li 4 Ti 5 O 1 2 to generate a new phase, composed of a small amount of anatase TiO 2 , rutile TiO 2 , LiF, and Zn 2 + ions are suspected to form a ZnO coating layer on Li 4 Ti 5 O 1 2 particles. The electrolyte reduction decomposition is suppressed in Zn 2 + and F − co-modified Li 4 Ti 5 O 1 2 due to the ZnO coating layer. 1 wt.% Zn 2 + and F − co-modified Li 4 Ti 5 O 1 2 exhibits the best rate capability, which leads to a charge capacity of 236.7, 227.8, 222.1, 202.7, 188.9 and 150.7 mAh g − 1 at 0.2C, 0.5C, 1C, 3C, 5C and 10C, respectively, between 0 V and 3 V. Furthermore, 1 wt.% Zn 2 + and F − co-modified Li 4 Ti 5 O 1 2 exhibits 96.0% charge capacity retention at 3C rate after 200 cycles, which is significantly higher than that of pure Li 4 Ti 5 O 1 2 (78.4%).
研究领域:
材料科学
·
电化学
·
储能技术
·
锂离子电池
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DOI
高影响因子
Inorganic Chemistry Frontiers
·
2023
·Vol. 10
·期 16
·4845-4853
·
IF 7
Yi-Lei Lv,Lei Huai,Yu-Long Wei,Liang Ma,Yue-Qi Wei,Wenlong Liu,Ru-Ling Tang
Combining multiple anions to design compounds with novel structures and excellent optical properties has become a hot research field. In this paper, a novel nitrate oxyfluoride, Hg3O2(NO3)F, has been obtained. Hg3O2(NO3)F features an unprecedented [(Hg3O2F)+]∞ cationic framework constructed by V-shaped HgO2 units and original HgO2F2 tetrahedra and with isolated NO3− anions balancing the charge. Hg3O2(NO3)F is the first nitrate oxyfluoride containing a d10 metal. Importantly, Hg3O2(NO3)F exhibits superior optical anisotropy with the calculated birefringence of Δn = 0.23 at 1064 nm. Based on the theoretical calculation analyses, the good optical anisotropy is mainly derived from the well-arranged V-shaped HgO2 units. This work proves that the strategy of introducing heteranions is effective for exploring high-performance optical materials.
研究领域:
材料科学
·
无机化学
·
光学材料
·
晶体化学
·
理论物理
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DOI
高影响因子
危险品化学品经营许可证（带存储）