Materials
·
2018
·Vol. 11
·期 2
·297
·
IF 2.467
Jiaxi Wang,Li Luo,Baoyu Huang,Jingqi He,Wei Zhang,Weiren Zhao,Jianqing Wang
Novel LiLa1−x−y(MoO4)2:xSm3+,yEu3+(in short: LL1−x−yM:xSm3+,yEu3+) double molybdate red phosphors were synthesized by a solid-state reaction at as low temperature as 610 °C. The optimal doping concentration of Sm3+in LiLa1−x(MoO4)2:xSm3+(LL1−xM:xSm3+) phosphor isx =0.05 and higher concentrations lead to emission quenching by the electric dipole—electric dipole mechanism. In the samples co-doped with Eu3+ions, the absorption spectrum in the near ultraviolet and blue regions became broader and stronger than these of the Sm3+single-doped samples. The efficient energy transfer from Sm3+to Eu3+was found and the energy transfer efficiency was calculated. Under the excitation at 403 nm, the chromaticity coordinates of LL0.95−yM:0.05Sm3+,yEu3+approach to the NTSC standard values (0.670, 0.330) continuously with increasing Eu3+doping concentration. The phosphor exhibits high luminous efficiency under near UV or blue light excitation and remarkable thermal stability. At 150 °C, the integrated emission intensity of the Eu3+remained 85% of the initial intensity at room temperature and the activation energy is calculated to be 0.254 eV. The addition of the LL0.83M:0.05Sm3+,0.12Eu3+red phosphors can improve the color purity and reduce the correlated color temperature of WLED lamps. Hence, LL1−x−yM:xSm3+,yEu3+is a promising WLED red phosphor.
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Catalysts
·
2026
·Vol. 16
·期 3
·264
·
IF 4.5
Chenfeng Li,Jiahao Ju,Beizhan Li,Jilei Xu,Xin Su,Zuoyi Xiao,Qingda An,Jiahui Huang
5-Methoxymethyl-2-furfural (MMF) serves as a crucial biobased platform molecule that can be transformed into various high-value chemicals and biobased polyester monomers. However, the current production of MMF still faces several challenges, such as low yield and prolonged reaction time. In this study, we prepared a series of amide-modified strongly acidic resin catalysts and discovered that they have a higher efficiency in converting fructose to prepare MMF in 1-Butyl-3-methylimidazolium chloride ([BMIM]Cl) and methanol. Among the synthesized catalysts, DB757-NMP demonstrated superior performance, achieving an MMF yield of approximately 61.5% under the optimized conditions, with a combined yield of HMF and MMF reaching about 66.6%. The catalyst formation mechanism was analyzed using FTIR, and NMR, confirming the transformation of proton between NMP and the sulfonic acid groups of the resin, which collectively promoted the conversion of fructose to MMF. In addition, we investigated main reasons for catalyst deactivation and successfully restored catalytic activity through regeneration. The regenerated catalyst could be reused for three times with only a slight decrease in MMF yield. The results suggested that DB757-NMP is a more sufficient and recyclable catalyst for the production of MMF from fructose. This work presented a simple and environmentally benign approach for the synthesis of MMF.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2026
·
IF 8.3
Zhenle Qin,Xiaohui Fang,Yansheng Liu,Guofu Wang,Yang Li,Xinping Zhang
Rapid, ultrasensitive, and specific detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) remains challenging, particularly for micro-volume samples. This study presents a capillary-based three-dimensional Ag/ZnO nanorod surface-enhanced Raman spectroscopy (SERS) biosensing platform that enables dual-mode (liquid and aerosol) viral detection within the same device. The capillary configuration inherently provides a large surface-to-volume ratio and acts as a confined reaction chamber, eliminating the need for external liquid or gas cells while minimizing sample consumption. Vertically aligned Ag/ZnO nanorod arrays grown on the inner wall further increase the density of electromagnetic hotspots, achieving an enhancement factor of 1.07 × 10 ¹ ¹ with excellent signal uniformity (RSD = 4.65%). After ACE2 functionalization, the biosensor enables label-free, direct detection of the 2019-nCoV antigen S protein in phosphate-buffered saline (PBS) and pharyngeal swabs solution (PSS), with a limit of detection (LOD) of 1 fg/mL. In addition, a sandwich-structured sensing configuration was designed to further amplify the Raman response. Importantly, without additional instrumentation, the same capillary SERS platform also enables direct detection of the 2019-nCoV antigen S protein aerosol with a LOD of 10 fg/mL and the SARS-CoV-2 Spike Pseudovirus at 100 fg/mL. This biosensor integrates sampling, enrichment, and readout in a low-volume device, reduces the risk of cross-contamination, and maintains high analytical performance.
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Journal of Materials Chemistry A
·
2026
·
IF 9.2
Liming Xiao,Fangyuan Yu,Ping Sun,Xiaodong Wang,Linmao Wen,Yunzi Ren,Feng Cao,Jun Mao,Qian Zhang
With the rapid development of the Internet of Things (IoT), there has been a significant surge in demand for flexible power supply. However, most existing solutions still face challenges in delivering both a continuous, stable energy supply and excellent mechanical adaptability.Herein, we report a Ag2Se network fabricated via a single-step electrodeposition process, which enables continuous regulation of porosity in the range of 75%-99%. This method leads to the formation of a highly interconnected porous architecture. The optimized network with 92% porosity demonstrates a synergistic enhancement of thermoelectric and mechanical properties, achieving a zT value of 0.38 and excellent strain stability, with only a 6.4% increase in resistance after 1000 compressive cycles. The single-leg device based on this material delivers a high power density of 181.5 μW cm -2 under a temperature difference of 40 K. In comparison, a denser network with 86% porosity, while mechanically rigid, achieves a room-temperature zT of 1.0, outperforming most bulk Ag2Se thermoelectric materials. This work provides an effective strategy to coordinate thermoelectric performance and mechanical flexibility through structural porosity modulation, paving the way for advanced wearable self-powered technologies.
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ACS Applied Nano Materials
·
2020
·
IF 0
Qiaoling Liu,Xiuyun Niu,Kaixin Xie,Yanmei Yan,Borong Ren,Ruirong Liu,Yuxia Li,Lin Li
Nitrogen(N) and sulfur(S) codoped carbon dots (N/S-CDs) are facilely developed by a one-pot hydrothermal process from thiourea and o-phenylenediamine as carbon precursors. The as-fabricated N/S-CDs reveal a high quantum yield of 26% and a large Stokes shift up to 106 nm under the excitation of 450 nm with good water dispersibility as well as antiphotobleaching. With addition of Fe3+, fluorescence quenching happens with a good linearity within 0.3–70 μM and a low detection limit of 0.19 μM. However, the quenched fluorescence could be rapidly recovered with the addition of monohydrogen phosphate ([HPO4]2–) due to formation of the stable complex [Fe(HPO4)]+ by a competitive reaction between the N/S-CDs-Fe3+ complex and [HPO4]2–, a good linearity is in the range of 0.3–60 μM with a low detection limit of 0.27 μM. Thus, a significant “on–off–on” fluorescence response is performed with obvious color change from yellow-dark brown-yellow. In addition, the practical application and the confocal microscopic images all suggest that the N/S-CDs could target both Fe3+ and [HPO4]2– in living cells, implying that the N/S-CDs possess the diverse applications for Fe3+ and [HPO4]2– recognitions in biomedical fields.
研究领域:
纳米技术
·
分析化学
·
生物医学成像
·
环境传感
·
材料科学
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2016
·Vol. 28
·期 2
·1620-1623
·
IF 1.798
Zhang Shuai,Li Lingxia,Lv Xiaosong
The Mg 3 (PO 4 ) 2 ceramics were prepared by using the conventional solid-state reaction method. And the samples sintered at 1025 °C showed high relative density with 96.51 %. The crystal structure and dielectric properties of Mg 3 (PO 4 ) 2 ceramics were investigated. Optimized dielectric properties tested at 1 MHz were obtained in Mg 3 (PO 4 ) 2 ceramic sintered at 1025 °C for 2 h (ε r ~ 5.9, tanδ ~ 0.0015 and τ ε ~ 40 ppm/°C). Meanwhile, Mg 3 (PO 4 ) 2 ceramic showed the chemical compatibility with Ag electrodes, which can be a promising candidate for multilayer components applications in high frequency.
研究领域:
材料科学
·
陶瓷
·
介电材料
·
电子材料
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高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2013
·
IF 2.004
Guofeng Xue,Hui Wan,Lei Wang,Guofeng Guan
Vapor–liquid equilibrium (VLE) data for binary systems of 2-methyl-1-butanol with ethylbenzene and xylene isomers are isobarically obtained with a modified Rose still at 101.33 kPa, as well as for the quinary system of 2-methyl-1-butanol + ethylbenzene + xylene isomers. The binary VLE data are considered to be thermodynamically consistent according to the Herington method and the point-to-point test. Taking the nonideality of the vapor phase into consideration, the activity coefficients are calculated. All systems show positive deviation from ideality. The VLE data are correlated using the nonrandom two-liquid (NRTL), universal quasichemical activity coefficient (UNIQUAC), and Wilson models. The calculated vapor-phase compositions and temperature agree well with the experimental values. The obtained model parameters of the binary systems are used to predict the VLE data for the quinary system. The results indicate that these three models allow a good prediction of the phase equilibrium for the quinary system.
研究领域:
化学工程
·
热力学
·
分离过程
·
相平衡
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PHYTOTHERAPY RESEARCH
·
2026
·
IF 8.1
Keyan Zhang,Mengdie Lu,Yan Yang,Jingping Huang,Liyin Li,Yishu Yan,Ruiyi Li,Jing Yang
N6-(2-hydroxyethyl) adenosine (HEA), the main active component of Cordyceps species, has garnered attention for its multifaceted hypolipidemic and antihyperglycemic activities. However, the influence by which HEA affects the progression of nonalcoholic fatty liver disease (NAFLD) remains unclear. This study sought to investigate the efficacy and mechanisms of HEA in treating NAFLD. The mouse NAFLD models were induced by high-fat diet feeding or methionine-choline-deficient diet feeding. AML12 and HepG2 cells were used for the in vitro study. Lipidemic and glycemic parameters, untargeted lipidomic, cellular thermal shift assay, and so forth were used to explore the beneficial effects of HEA in NALFD. HEA effectively alleviated the progression of NAFLD by regulating glucolipid metabolism and insulin resistance both in vitro and in vivo. Lipidomic data suggested that HEA markedly reduced triglyceride levels by blocking hepatic de novo lipogenesis and shifting fatty acids into mitochondria for oxidation and into structural lipids. Moreover, stimulation of the supernatant of adipocytes with HEA was more effective than treatment with HEA only in terms of hepatic de novo lipogenesis in HepG2 cells. Mechanistically, HEA significantly reduced the population of JunB+ adipocytes, which exerts lower thermogenic capacity. Further studies verified that HEA interacted with ASP-12, ASP-13, and TYR-15 of JunB subunits through hydrogen bonding, leading to activated PGC-1α activity and governing thermogenic adipocyte heterogeneity and consequent biological responses. These findings highlight the capacity of HEA to alleviate NAFLD through the JunB pathway, paving a new way to treat NAFLD by influencing adipocyte functionality.
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PubMed
高影响因子
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
·
2023
·
IF 3.1
Qiuxia Zhu,Yong Luo,Yuetao Wen,Ding Wang,Jing Li,Zhongcai Fan
Apoptosis is a major pathophysiological change following myocardial ischemia/reperfusion (I/R) injury. Glucagon-like peptide 1 (GLP-1) and its receptor GLP-1R are widely expressed in the cardiovascular system and GLP-1/GLP-1R activates the protein kinase G (PKG)-related signaling pathway. Therefore, this study tested whether semaglutide, a new GLP-1 analog, inhibits I/R injury-induced cardiomyocyte apoptosis by activating the PKG/PKCε/ERK1/2 pathway. We induced myocardial I/R injury in rats and hypoxia/reoxygenation (H/R) injury in H9C2 cells and detected the effects of semaglutide, a PKG analog (8-Br-cGMP), and a PKG inhibitor (KT-5823) on the PKG/PKCε/ERK1/2 pathway and cardiomyocyte apoptosis. We found that semaglutide upregulated GLP-1R levels, and both semaglutide and 8-Br-cGMP activated the PKG/PKCε/ERK1/2 pathway, inhibited myocardial infarction (MI), decreased hs-cTNT levels, increased NT-proBNP levels, and suppressed cardiomyocyte apoptosis in I/R rats and H/R H9C2 cells. However, KT-5823 exerted contrasting effects with semaglutide and 8-Br-cGMP, and KT-5823 weakened the cardioprotective effects of semaglutide. In conclusion, semaglutide inhibits I/R injury-induced cardiomyocyte apoptosis by activating the PKG/PKCε/ERK1/2 pathway. The beneficial effect of GLP-1/GLP-1R, involved in the activation of the PKG/PKCε/ERK1/2 pathway, may provide a novel treatment method for myocardial I/R injury.
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PubMed
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2023
·
IF 8.7
Shaohua Mao,Chiquan He,Zhenzhen Zhao,Feifei Wang,Xueping Chen,Xiaoyan Liu,Daoyuan Wang
Fe2O3-assisted pyrolysis has been demonstrated to be a cost-effective thermal desorption (TD) technology . Lurgi-Thyssen dust (LTD) is a type of steel slag waste that contains a large amount of Fe2O3. In this study, to reduce energy consumption, LTD was added to contaminated soil to evaluate the feasibility of enhancing the TD removal efficiency of di-(2-ethylhexyl) phthalate (DEHP). The DEHP removal rate increased by 22.39% after adding 2% LTD at 200 °C for 20 min. Because of the catalytic pyrolysis of LTD, DEHP was pyrolyzed to form three types of short-chain esters: mono-(2-ethylhexyl) phthalate (MEHP), di (2-methylbutyl) ester, and methyl 2-ethylhexyl phthalate. The pyrolysis products of DEHP were less toxic and did not affect soil reuse. When the DEHP removal rate was 87.10%, LTD addition decreased the temperature and residence time of TD and alleviated the effect of TD on the soil physicochemical properties . Additionally, the desorption of DEHP from soil fitted the pseudo-second-order kinetic model well. Thus, the addition of LTD to contaminated soil enhanced the efficiency of TD remediation. Moreover, this study could provide a practical and economical strategy for LTD reuse.
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PubMed
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SCIENCE OF THE TOTAL ENVIRONMENT
·
2023
·
IF 9.8
Yijie Chen,Zhen Zhen,Gaoyang Li,Huijun Li,Ting Wei,Fengcheng Huang,Tao Li,Changhong Yang,Lei Ren,Yanqiu Liang,Zhong Lin,Dayi Zhang
Di-2-ethylhexyl phthalate (DEHP) is a widespread persistent organic pollutant in the environment. As an ultimate barrier preventing pollutant entry into the ocean, mangrove plays an important role in coastal ecosystem. However, little information is known about DEHP degradation in mangrove rhizosphere. In this study, a rhizobox was used to separate four consecutive rhizosphere compartments with distance of 0–2, 2–4, 4–6, and > 6 mm to the rhizoplane of Kandelia obovata and investigate DEHP gradient degradation behavior in rhizosphere. Sediments closer to the rhizoplane exhibited higher DEHP degradation efficiencies (74.4 % in 0–2 mm layer). More precisely, mangrove rhizosphere promoted the benzoic acid pathway and non-selectively accelerated the production of mono(2-ethylhexyl) phthalate, phthalic acid and benzoic acid. Higher sediment organic matter content, lower pH and less humus in rhizosphere benefited DEHP hydrolysis. In addition, rhizosphere significantly increased microbial biomass and activities comparing to bulk sediments. Some bacterial lineages with potential DEHP degradation capability exhibited a distance-dependent pattern that decreased with the distance to the rhizoplane, including Bacillales , Acidothermaceae , Gammaproteobacteria , and Sphingobacteriales . Our findings suggested that mangrove rhizosphere could accelerate DEHP degradation by altering sediment physicochemical properties and microbial composition, showing positive effects on coastal ecosystem services for eliminating phthalate acid ester contamination.
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高影响因子
International Journal of Applied Ceramic Technology
·
2023
·Vol. 20
·期 4
·2392-2400
·
IF 2.1
Zicheng Wei,Qingqing Yang,Bin Meng,Chen Li,Xinyu Ping,Congcong Fang,Han Zhang
Six rare-earth tantalate high-entropy ceramics of (5RE .2 )Ta 3 O 9 (RE represents any five elements selected from La, Ce, Nd, Sm, Eu, Gd) were designed and prepared by spark plasma sintering process at 1400°C in this study. The (5RE .2 )Ta 3 O 9 ceramics only consist of a single-phase solid solution with perovskite structure. Their relative densities are all above 90%, and the average grain size is in the range of 1.47–2.92 μm. The thermal conductivity of (5RE .2 )Ta 3 O 9 ceramics is in 2.24–1.90 W m −1 K −1 (25°C–500°C), which is much lower than that of yttria-stabilized zirconia. In six samples, (La .2 Nd .2 Sm .2 Gd .2 Eu .2 )Ta 3 O 9 possesses a thermal conductivity of 1.90 W m −1 K −1 , a thermal expansion coefficient of 3.47 × 10 −6 K −1 (500°C), a Vickers hardness of about 7.33 GPa, and a fracture toughness of about 5.20 MPa m 1/2 , which are suitable for its application as thermal barrier coatings.
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危险品化学品经营许可证（带存储）