Journal of Advanced Ceramics
·
2022
·Vol. 11
·期 3
·392-402
·
IF 11.534
Feng Chao,Zhou Xu,Tao Bingjing,Wu Haitao,Huang Shifeng
Dense microwave dielectric ceramics of Ce 2 [Zr 1 − x (Al 1/2 Ta 1/2 ) x ] 3 (MoO 4 ) 9 (CZMAT) ( x = 0.02–0.10) were prepared by the conventional solid-state route. The effects of (Al 1/2 Ta 1/2 ) 4+ on their microstructures, sintering behaviors, and microwave dielectric properties were systematically investigated. On the basis of the X-ray diffraction (XRD) results, all the samples were matched well with Pr 2 Zr 3 (MoO 4 ) 9 structures, which belonged to the space group \(R\bar 3c\) . The lattice parameters were obtained using the Rietveld refinement method. The correlations between the chemical bond parameters and microwave dielectric properties were calculated and analyzed by using the Phillips—Van Vechten—Levine (P—V—L) theory. Excellent dielectric properties of Ce 2 [Zr 0.94 (Al 1/2 Ta 1/2 ) 0.06 ] 3 (MoO 4 ) 9 with a relative permittivity ( ε r ) of 10.46, quality factor ( Q × f ) of 83,796 GHz, and temperature coefficient of resonant frequency ( τ f ) of −11.50 ppm/°C were achieved at 850 °C.
研究领域:
材料科学
·
陶瓷
·
微波介电材料
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2020
·Vol. 55
·期 35
·16497-16509
·
IF 3.553
Cheng Rui Xue,Tian Fei Yang,Zhang Yun Qian,Chen Kai,Zhu Qian Jiang,Tao Zhu
Abstract Cucurbit[ n ]uril(Q[ n ])-based supramolecular frameworks assembled through outer surface interactions are characterized by their simple composition, convenient preparation, high yields and controllable structures. The most prominent characteristic of these frameworks is their diversity, with various synthesis methods, structural characteristics, structure directing agents and basic building blocks of Q[ n ]s. In this work, a symmetric tetramethyl-substituted Q[6] (TMeQ[6]) is selected as the basic building block, with three different TMeQ[6]-based supramolecular frameworks obtained from 1-, 3- and 5 mol/L aqueous H 2 SO 4 solutions, respectively. The outer surface interactions between TMeQ[6] and the adjacent SO 4 2− anions or TMeQ[6] units are the main driving forces for the formation of these frameworks, which exhibit adsorption properties for fluorophore dyes and organic isomers. These adsorption characteristics may lead to the application of these frameworks in the synthesis of solid fluorescent sensors for volatile organic compounds and the adsorptive separation of alkane isomers. Graphic abstract
研究领域:
化学
·
材料科学
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DOI
高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
·
2024
·Vol. 22
·期 1
·1-21
·
IF 10.6
Xu Wenhao,Ye Shiqi,Liu Wangrui,Guo Huaqi,Zhang Linhui,Wei Shiyin,Anwaier Aihetaimujiang,Chang Kun,Malafaia Guilherme,Zhang Hailiang,Ye Dingwei,Wei Gang
In recent years, the environmental health issue of microplastics has aroused an increasingly significant concern. Some studies suggested that exposure to polystyrene microplastics (PS-MPs) may lead to renal inflammation and oxidative stress in animals. However, little is known about the essential effects of PS-MPs with high-fat diet (HFD) on renal development and microenvironment. In this study, we provided the single-cell transcriptomic landscape of the kidney microenvironment induced by PS-MPs and HFD in mouse models by unbiased single-cell RNA sequencing (scRNA-seq). The kidney injury cell atlases in mice were evaluated after continued PS-MPs exposure, or HFD treated for 35 days. Results showed that PS-MPs plus HFD treatment aggravated the kidney injury and profibrotic microenvironment, reshaping mouse kidney cellular components. First, we found that PS-MPs plus HFD treatment acted on extracellular matrix organization of renal epithelial cells, specifically the proximal and distal convoluted tubule cells, to inhibit renal development and induce ROS-driven carcinogenesis. Second, PS-MPs plus HFD treatment induced activated PI3K-Akt, MAPK, and IL-17 signaling pathways in endothelial cells. Besides, PS-MPs plus HFD treatment markedly increased the proportions of CD8 + effector T cells and proliferating T cells. Notably, mononuclear phagocytes exhibited substantial remodeling and enriched in oxidative phosphorylation and chemical carcinogenesis pathways after PS-MPs plus HFD treatment, typified by alterations tissue-resident M2-like PF4 + macrophages. Multispectral immunofluorescence and immunohistochemistry identified PF4 + macrophages in clear cell renal cell carcinoma (ccRCC) and adjacent normal tissues, indicating that activate PF4 + macrophages might regulate the profibrotic and pro-tumorigenic microenvironment after renal injury. In conclusion, this study first systematically revealed molecular variation of renal cells and immune cells in mice kidney microenvironment induced by PS-MPs and HFD with the scRNA-seq approach, which provided a molecular basis for decoding the effects of PS-MPs on genitourinary injury and understanding their potential profibrotic and carcinogenesis in mammals. Graphical Abstract
研究领域:
环境健康
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分子生物学
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免疫学
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肾病学
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癌症研究
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DOI
PubMed
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-13
·
IF 14.7
Chen Tianhong,Yan Dongpeng
Long persistent luminescence (LPL) has gained considerable attention for the applications in decoration, emergency signage, information encryption and biomedicine. However, recently developed LPL materials – encompassing inorganics, organics and inorganic-organic hybrids – often display monochromatic afterglow with limited functionality. Furthermore, triplet exciton-based phosphors are prone to thermal quenching, significantly restricting their high emission efficiency. Here, we show a straightforward wet-chemistry approach for fabricating multimode LPL materials by introducing both anion (Br − ) and cation (Sn 2+ ) doping into hexagonal CsCdCl 3 all-inorganic perovskites. This process involves establishing new trapping centers from [CdCl 6-n Br n ] 4− and/or [Sn 2-n Cd n Cl 9 ] 5− linker units, disrupting the local symmetry in the host framework. These halide perovskites demonstrate afterglow duration time ( > 2,000 s), nearly full-color coverage, high photoluminescence quantum yield ( ~ 84.47%), and the anti-thermal quenching temperature up to 377 K. Particularly, CsCdCl 3 : x %Br display temperature-dependent LPL and time-valve controllable time-dependent luminescence, while CsCdCl 3 : x %Sn exhibit forward and reverse excitation-dependent Janus-type luminescence. Combining both experimental and computational studies, this finding not only introduces a local-symmetry breaking strategy for simultaneously enhancing afterglow lifetime and efficiency, but also provides new insights into the multimode LPL materials with dynamic tunability for applications in luminescence, photonics, high-security anti-counterfeiting and information storage.
研究领域:
材料科学
·
光电技术
·
光子学
·
纳米技术
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DOI
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-10
·
IF 14.7
Su Han,Li Jingru,Zhong Yu,Liu Yu,Gao Xuhong,Kuang Juner,Wang Minkang,Lin Chunxi,Wang Xiuli,Tu Jiangping
Sulfides are promising electrolyte materials for all-solid-state Li metal batteries due to their high ionic conductivity and machinability. However, compatibility issues at the negative electrode/sulfide electrolyte interface hinder their practical implementation. Despite previous studies have proposed considerable strategies to improve the negative electrode/sulfide electrolyte interfacial stability, industrial-scale engineering solutions remain elusive. Here, we introduce a scalable Li-Al-Cl stratified structure, formed through the strain-activated separating behavior of thermodynamically unfavorable Li/Li 9 Al 4 and Li/LiCl interfaces, to stabilize the negative electrode/sulfide electrolyte interface. In the Li-Al-Cl stratified structure, Li 9 Al 4 and LiCl are enriched at the surface to serve as a robust solid electrolyte interphase and are diluted in bulk by Li metal to construct a skeleton. Enabled by its unique structural characteristic, the Li-Al-Cl stratified structure significantly enhances the stability of negative electrode/sulfide electrolyte interface. This work reports a strain-activated phase separation phenomenon and proposes a practical pathway for negative electrode/sulfide electrolyte interface engineering.
研究领域:
材料科学
·
电化学
·
电池技术
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DOI
高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
·
2024
·Vol. 22
·期 1
·1-14
·
IF 10.6
Chen Tongtong,Cai Zhengwei,Zhao Xinxin,Wei Gang,Wang Hanqi,Bo Tingting,Zhou Yan,Cui Wenguo,Lu Yong
By integrating magnetic resonance-visible components with scaffold materials, hydrogel microspheres (HMs) become visible under magnetic resonance imaging(MRI), allowing for non-invasive, continuous, and dynamic monitoring of the distribution, degradation, and relationship of the HMs with local tissues. However, when these visualization components are physically blended into the HMs, it reduces their relaxation rate and specificity under MRI, weakening the efficacy of real-time dynamic monitoring. To achieve MRI-guided in vivo monitoring of HMs with tissue repair functionality, we utilized airflow control and photo-crosslinking methods to prepare alginate-gelatin-based dual-network hydrogel microspheres (G-AlgMA HMs) using gadolinium ions (Gd (III)), a paramagnetic MRI contrast agent, as the crosslinker. When the network of G-AlgMA HMs degrades, the cleavage of covalent bonds causes the release of Gd (III), continuously altering the arrangement and movement characteristics of surrounding water molecules. This change in local transverse and longitudinal relaxation times results in variations in MRI signal values, thus enabling MRI-guided in vivo monitoring of the HMs. Additionally, in vivo data show that the degradation and release of polypeptide (K 2 (SL) 6 K 2 (KK)) from G-AlgMA HMs promote local vascular regeneration and soft tissue repair. Overall, G-AlgMA HMs enable non-invasive, dynamic in vivo monitoring of biomaterial degradation and tissue regeneration through MRI, which is significant for understanding material degradation mechanisms, evaluating biocompatibility, and optimizing material design.
研究领域:
生物医学工程
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材料科学
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医学影像学
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DOI
高影响因子
TRANSACTIONS OF TIANJIN UNIVERSITY
·
2020
·Vol. 27
·期 6
·460-472
·
IF 0
Wei Hongyuan,Gao Ningcan,Dang Leping
In this work, a new crystallization method was used to prepare two polymorphs of sulfamethazine–saccharin (SMT–SAC) cocrystal in bulk. The purity and crystal form of both polymorphs were confirmed by optical microscopy, scanning electron microscopy, powder X-ray diffraction, differential scanning calorimetry, and thermogravimetric analysis. Moreover, the solubility of the stable form (form II) was determined by gravimetric analysis in nine pure solvents and one binary (acetonitrile + 2-propanol) solvent at temperatures ranging from 278.15 to 348.15 K at atmospheric pressure. Experimental data were correlated using the modified Apelblat model, the λh equation, the nonrandom two-liquid (NRTL) model, the Jouyban–Acree model, and the CNIBS/Redlich–Kister model. Finally, the apparent thermodynamic properties, such as \(\Delta_{\text{dis}} G\) , Δ dis H , and Δ dis S , were calculated on the basis of the activity coefficient obtained by the NRTL model. All the models correlate well, and all the experimental and calculated results indicate that the dissolution behavior of SMT–SAC cocrystal form II is a spontaneous, endothermic, and entropy-driven process.
研究领域:
药学
·
物理化学
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DOI
CATALYSIS LETTERS
·
2020
·Vol. 150
·期 12
·3533-3541
·
IF 2.482
Peng Shengnan,Jiang Yunhong,Wang Zeming,Luo Xudong,Lu Jinlin,Han Lu,Ding Yanhuai
Abstract CdS nano-photocatalysts hold a great promise for the photocatalytic hydrogen evolution; however, their practical application is greatly hampered by poor activity and stability due to the recombination of the photogenerated charge carriers and photocorrosion phenomena. Herein, we report a novel 3-dimensional CdS@UiO-66 nanostructures obtained by a facile solvent-free approach; with a step-by-step procedure, the core/shell configuration provided a suitable unit in size to easily equip defect-rich MoS 2 nanosheets. The UiO-66 Zr-MOFs used as a porous container to promote the dispersion of CdS nanoparticles, resulting to the increasement of active sites for photocatalytic reaction. The further enhanced photocatalytic activity for MoS 2 hybrid CdS@UiO-66 originated from the manufactured defect on the exposed edges of MoS 2 nanosheets, which was produced by adjusting the S/Mo ratio. UiO-66 did not only provide extensive migration routes over photogenerated electrons, more importantly, it created ample time and sites for accelerating consumption of the isolated photogenerated holes with sacrificial agent, resulting in alleviating photocorrosion reaction. The photocatalytic efficiency and photostability were simultaneously promoted. This work highlights the potential application of core/shell configuration in photocatalytic hydrogen evolution. Graphic Abstract
CdS@UiO-66 type composite photocatalyst was obtained in the condition of
solvent-free assembling at room temperature. The defect-rich MoS 2 nanosheets were
felicitously equipped on the core/shell configuration. The obtained defect MoS 2 hybrid CdS@UiO-66 composite material exhibits a high and stable hydrogen production rate
due to their synergistic effect.
研究领域:
材料科学
·
能源科学
·
环境科学
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DOI
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2024
·Vol. 416
·期 19
·4417-4426
·
IF 3.8
Zhu Zhentong,Wang Xiaoli,Wang Na,Zeng Chaoqin,Zhang Lei,Fan Jiamin,Yang Xin,Li Peizhe,Yuan Hongxia,Feng Yanjun,Huo Shuhui,Lu Xiaoquan
Artificial enzymes with high stability, adjustable catalytic activity, controllable preparation, and good reproducibility have been widely studied. Noble metal nanozymes, particularly gold nanoparticles (Au NPs), exhibit good catalytic activity, but their stability is poor. In this study, zeolitic imidazolate framework-8 (ZIF-8) was used as a carrier for Au NPs, thus improving the utilization efficiency and conservation stability of the nanozymes. A ZIF-8/Au nanocomposite with peroxidase activity and a raspberry-shaped structure was synthesized. In the assay, ZIF-8/Au catalyzed the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) to a blue product oxidized TMB (oxTMB). Glutathione (GSH) selectively inhibited this reaction, with a detection limit of 0.28 µM and linear range of 0.5–60 µM. Using the photo and chromaticity analysis functions, we developed a portable analysis method using a smartphone equipped with a camera module as a detection terminal for a wide range of rapid screening techniques for GSH. Preparation of raspberry-shaped ZIF-8/Au improved the catalytic activity of Au NPs and good results were demonstrated in serum, which suggests their promising application under physiological conditions. Graphical Abstract
研究领域:
纳米技术
·
分析化学
·
生物传感器
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2022
·Vol. 29
·期 4
·1-9
·
IF 3.061
Zhang Andong,Hao Jingyi,Hou Sen,Shi Ge,He Yanjie,Cui Zhe,Liu Minying,Qiao Xiaoguang,Fu Peng,Pang Xinchang
Aggregation-induced emission (AIE) has already been applied for in-situ monitoring living radical polymerization process. Here we utilized functionalized monomer TPEE as fluoresce probes for the in-situ monitoring of photo-induced RAFT-PISA process. Hydrophilic POEGA macro chain transfer agent (Macro-CTA) was first prepared with light sensitive CTA 4-Cyanopentanoic acid dithiobenzoate, and (2-(4-vinylphenyl)ethene-1,1,2-triyl)tribenzene (TPEE) was copolymerized with styrene to form the hydrophobic block under UV irradiation. The growth of hydrophobic block induced the self-assembly of polymer chains and the emission signal could be observed by naked eyes afterwards. The PL intensity increased with the increase of particle size, as well as the monomer conversion and molecular weight, owing to the enhancement of AIE monomer in the self-assembly latex particles. This no-invasive and facile approach to in-situ visualization and continuously monitoring of the photo-induced RAFT-PISA process might be helpful for both scientific research and commercial application.
研究领域:
高分子化学
·
材料科学
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DOI
高影响因子
IONICS
·
2022
·Vol. 28
·期 9
·4273-4282
·
IF 2.961
Gao Jiayi,Yang Yujie,Ren Yujie,Zhu Wenjie,Li Jin,Liu Yongguang,Dai Lei,Wang Ling,He Zhangxing
Vanadium redox flow batteries have the advantages of long life, flexible design, safety, and reliability, so they have broad development prospects in the field of energy storage. Borides are extensively used in electrochemistry due to their excellent electrical conductivity. In this program, HfB 2 was used as catalyst for the V 3+ /V 2+ pair. The catalytic effect was verified by electrochemical impedance spectroscopy and cyclic voltammetry. The result shows that the cell using HfB 2 as negative catalyst can exhibit excellent rate capability when the current density is 50 ~ 125 mA cm −2 . At 125 mA cm −2 , the discharge capacity of the modified cell is 68.7 mA h, which is much higher than pristine cell (22.8 mA h). And the energy efficiency of pristine cells is 11.2% lower than that of modified cells. These consequences suggest that HfB 2 is a catalyst with promising prospects to enhance electrochemical activity of V 3+ /V 2+ redox reaction in VRFB.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2021
·Vol. 56
·期 13
·8060-8078
·
IF 4.22
Wang Pengfei,Zhao Haoxu,Li Shutao,Jing Ruisen,Liu Yao,Jiang Ning,Bian Fenggang,Liu Yunyan,Liu Huiqiang,Zhang Qian
In this paper, PDDA-functionalized black phosphorus nanosheets (BP) was used to construct BP/Ag 2 CO 3 heterojunction photocatalyst by a simple co-precipitation process. The morphology, photoelectrochemical, and photocatalytic performance of BP/Ag 2 CO 3 heterojunction photocatalyst were systematically characterized and analyzed. BP was proved to enhance the transport efficiency and restrain the recombination efficiency of the carriers in the BP/Ag 2 CO 3 heterojunction. At the same time, BP greatly suppressed the Ag 2 CO 3 photo-corrosion and improved the stability for methyl orange (MO) degradation. After four cycles, compared with the 19.2% degradation rate of MO in pure Ag 2 CO 3 , the photocatalytic activity remained as high as 87.1% in 15-BP/Ag 2 CO 3 heterojunction. The Mott–Schottky and active species capture experiments enabled us to obtain the BP/Ag 2 CO 3 heterojunction band gap configuration, and propose the reaction mechanism of the direct Z-scheme. The in-situ X-ray photoelectron spectroscopy (XPS) analysis and work function calculation verified the charge transfer in BP/Ag 2 CO 3 direct Z-scheme heterojunction. This Z-scheme mechanism interpreted the enhanced photocatalytic stability of BP/Ag 2 CO 3 for inhibiting the Ag + photoreduction in the conduction band of Ag 2 CO 3 , and meanwhile elucidated the extremely improved photocatalytic activity by restraining the recombination of electron-hole pairs. This work is expected to be useful in providing a facile route for designing novel heterojunction photocatalytic material and carrying out high-efficiency wastewater treatment.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）