CERAMICS INTERNATIONAL
·
2026
·
IF 6
Yiyan Wang,Yanjie Zhang,Yunan Lin,Zheng Wei,Haohao Cao,Jingjie Yu,Zhiguo Xiao
Red-Green-Blue (RGB) phosphors are promising for optical information encoding and full-spectrum white light-emitting diodes (WLEDs). Herein, KCsPbBr 3 perovskite quantum dots (PQDs, ∼5.0 nm) were successfully formed on Sr 2 MgSi 2 O 7 : Eu 2+ phosphors via a facile deposition–precipitation method, yielding blue-green emitting composites. The KCsPbBr 3 -Sr 2 MgSi 2 O 7 : Eu 2+ composites exhibit tunable emissions at 463 nm and 519 nm under 365 nm excitation. Specifically, the blue emission at 463 nm is attributed to the 4f 6 5 d 1 → 4f 7 transition of Eu 2+ ions in the Sr 2 MgSi 2 O 7 host, while the green emission at 519 nm originates from the emission of KCsPbBr 3 perovskite quantum dots. Notably, the emission intensity at 75 wt% KCsPbBr 3 is ∼240 times higher than that at 9 wt% and a blue afterglow persists after removing UV excitation. Under external stimulation, the composites display color-variable patterns with fluorescence mode conversion, enabling multi-dimensional anti-counterfeiting. For instance, an RGB pattern appears white under natural light but transforms into a red-green pattern under UV and afterglow modes. Furthermore, full-spectrum WLEDs with high color rendering (Ra = 90, Rf = 83, Rg = 91), comparable to sunlight, are achieved by combining the composites with CaAlSiN 3 : Eu 2+ . These results indicate that KCsPbBr 3 -Sr 2 MgSi 2 O 7 : Eu 2+ PQD phosphors have strong potential in advanced anti-counterfeiting and full-spectrum WLED applications.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Xiaoyan Qu,Yumeng Shen,Kunkun Nie,Luyao Guo,Bo Lei,Zhengqing Liu
Controlled synthesis of subnano-sized magnesium fluoride (MgF 2 ) and its multi-element derivatives remains a critical challenge limiting their functional exploitation. Here, we develop a mild colloidal chemical synthesis strategy to fabricate uniform MgF 2 , NaMgF 3 , and KMgF 3 sub-nanocrystals with tunable morphologies (nanorods, nanoneedles, nanosheets) and precise size control by regulating nucleation and growth processes using surfactants with distinct functional groups. The synthesis mechanism involves surfactant-mediated interaction between metal trifluoroacetate precursors and surfactants (oleic acid, oleylamine), followed by fluorination upon thermal decomposition of the formed intermediates. Oleic acid promotes anisotropic one-dimensional (1D) growth through carboxyl-Mg 2+ coordination on specific facets, while oleylamine modulates growth kinetics by balancing crystal plane energies, enabling diverse sub-nanostructures. Structure-activity relationship analysis reveals that KMgF 3 nanorods exhibit superior antibacterial activity against methicillin-resistant Staphylococcus aureus (MRSA) by impairing bacterial proton motive force. In vivo studies confirm that treatment with these nanorods accelerates the healing of infected wounds, an effect linked to concurrent infection control and tissue regeneration. This work highlights the critical role of surfactant regulation in sub-nanostructuring MgF 2 derivatives, paving the way for advanced biomedical applications.
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高影响因子
JOURNAL OF THE ENERGY INSTITUTE
·
2023
·
IF 5.7
Jing Zhao,Wenjie Zhang,Dekui Shen,Huiyan Zhang,Zhanghong Wang
Lignin-based porous carbon materials are estimated as promising CO 2 capture adsorbents with thanks to their charateristics as abundant distribution, low-cost preparation and high stability. In this work, a series of porous carbon materials were synthesized from the pulping waste (black liquor lignin) through chemical activation and template method . The morphological structure, porosity and surface chemical properties of the obtained porous carbon materials identified by SEM, XRD , Raman, BET and XPS were highly influenced by the synthesis methods . The porous carbon material prepared by KOH activation (C-BLL-KOH) possessed the most disorder carbon structure, along with the largest BET surface area up to 1336.5 m 2 /g and the highest microporosity accounting for 93.2% of the total pore volume, which is beneficial for capturing CO 2 . The sulfur-contained functional groups in chemically-activated carbon materials were dominated by oxidized sulfur species and oxygen element was mainly in the form of hydroxyl groups. CO 2 adsorption performance of these lignin-based porous carbon materials was carried out at different temperatures (0 °C, 25 °C and 50 °C) to investigate the effect of synthesis method. The most remarkable CO 2 capture capacity was achieved for C-BLL-KOH, which was up to 5.20 mmol/g at 0 °C, 3.60 mmol/g at 25 °C and 2.23 mmol/g at 50 °C at a CO 2 partial pressure of 100 kPa. This result suggested the KOH activation was an effective route to convert black liquor lignin to porous carbon materials as potential absorbents for CO 2 capture.
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高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Fupo He,Jin Rao,Wenhao Fu,Jielin Zhou,Yuxuan Zhang,Tengyun Chen,Wenhao Huang,Yao Wang,Teliang Lu,Haishan Shi
In this study, gallium-containing magnesium/calcium phosphate ceramic scaffolds (G-MCP) were prepared by sintering the mixtures of gallium-doped tricalcium phosphate and trimagnesium phosphate at low temperatures (950 and 1000 °C), and their pore structure was formed by the extrusion-type 3D printing method. The G-MCP ceramic scaffolds were dominated by the gallium/magnesium-doped Ca 3 Mg 3 (PO 4 ) 4 phase. The G-MCP ceramic scaffolds sintered at 950 °C attained considerably high compressive strength (5.0–13.2 MPa) as well as porosity (63.7%–72.1%). When the sintering temperature increased to 1000 °C, the G-MCP ceramic scaffolds achieved tremendous increase in compressive strength (38.3–94.3 MPa), which was concomitant with significant decrease in porosity (46.2%–48.7%). Benefiting from the release of gallium, magnesium and calcium ions, the G-MCP ceramic scaffolds noticeably stimulated in vitro cell growth and osteoblastic differentiation, and distinctively obstructed the osteoclastic differentiation. The G-MCP ceramic scaffolds are promising for effectively treating the osteoporotic bone defects.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Zihao Gao,Yongjun Jiang,Zheyi Sun,Bin Shao,Rongting Ma,Zhonghao Jia,Lihui Zhou,Sheng Dai,Jun Hu
Integrated CO 2 capture and conversion (iCCC) technology has been recognized as the most efficient technology for Carbon Capture, Utilization, and Storage (CCUS). However, its industrialization is hindered by some unsolved engineering problems. Typically, sulfur impurities in most industrial flue gas will have significant poisoning effects on the process. Herein, we report integrations of SO 2 removal, CO 2 capture and conversion (iSCCC) at an isothermal intermediate temperature in a two-fixed-bed column system. By rationally developing the SO 2 adsorbent pellets of ZnO-CaO, the CO 2 adsorbent pellets of AMS-MgO, and the methanation catalyst pellets of Ni-La/Al 2 O 3 , each individual unit is optimized. Specifically, the in-situ dynamic structure evolution observed by the atmospheric aberration-corrected scanning transmission electron microscopy as well as the theoretical dynamics calculation provide an in-depth understanding of the CO 2 desorption performance changing with the temperature on the AMS-MgO pellets, which builds a bridge for a successful 99.3 % CO 2 methanation efficiency. As a result, the matched iSCCC process demonstrates exceptional performance from simulated flue gas containing 1000 ppm SO 2 and 20 vol% CO 2 , with full desulfurization and decarbonation and a CO 2 conversion efficiency of 93.6 % after 20 cycles isothermally at 400 °C, superior to all the reported performance so far as we know, providing a promising route to practical large-scale iSCCC towards carbon neutrality.
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高影响因子
ACS Sustainable Chemistry & Engineering
·
2020
·
IF 7.632
Yongfeng Bu,Hongyu Liang,Renxing Shi,Haitao Liu,Yanzhi Zhang,Tao Sun,Cheng Lian,Xiangqian Shen,Huaming Li
The maximum power and consistency assessment are key technologies for the practical application of energy storage device packs such as carbon supercapacitors (SCs) connected in series. Herein, we first report a simple practical strategy to efficiently evaluate SCs’ maximum power and consistency by using the dependence of direct-current equivalent series resistance (ESRdc) on current density from small to large and demonstrate its general applicability to SCs using neutral, acidic, and alkaline aqueous electrolytes. With this strategy implemented by a computer program, a group of highly consistent SCs with safe power can be obtained, especially for high-rate consistency associated with ionic resistance under high-power operation. The ESRdc evolution is attributed to the dynamic migration resistance of ions migrating from micro- to meso-/macropores, which contains the real ion migration/storage characteristic information. This study provides real practical application possibilities for solving the problems of SC consistency assessment and rated power setting in batch.
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高影响因子
JOURNAL OF ANALYTICAL CHEMISTRY
·
2018
·Vol. 73
·期 10
·978-985
·
IF 0.971
Lu Gan,Tao Haisheng,Kan Xianwen,Chen Qian,Sheng Kuang,Wu Jie
Abstract Phosphorus-doped carbon nanocages are prepared from the mixture of triphenylphosphine and benzene through a chemical vapor deposition method. The as-prepared phosphorus doped sample displays a three dimensional nanosized hollow structure with high specific surface area. Based on these unique properties, phosphorus-doped carbon nanocages have been developed to fabricate an electrochemical sensor. The cyclic voltammetry experimental results indicate that the sensor possesses an excellent catalytic capacity. Compared with carbon nanotubes, the prepared sensor shows a higher sensitivity for dopamine and uric acid. The sensor also shows good selectivity for these analytes. With the acceptable reproducibility and stability, the sensor is applied for real samples with satisfactory results. The simple and efficient sensor in the present work implies that the phosphorus-doped carbon nanocages can be further used for other compounds determination.
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高影响因子
DIAMOND AND RELATED MATERIALS
·
2018
·
IF 2.232
Mingfeng Chen,Xiaozhong Zheng,Yushuang Ma,Xiaoping Dong
A facile one-step approach was employed to synthesize oxygen-rich porous carbon nanosheets (OPCNs) using glucose as carbon source via Mg 2 (OH) 2 CO 3 simultaneously chemical blowing and activation. Besides the simple synthetic process, the OPCNs material has an ultrathin thickness about 10–20 nm, numerous heteroatoms, developed porosity and good electrical transport properties. The electrochemical tests demonstrated that OPCNs possessed high specific capacitance, good rate performance and low intrinsic resistance. Moreover, the comparison experiments indicated that the specific capacitance of OPCNs was higher than those of carbon materials prepared by the activation of KOH and ZnCl 2 , chemical blowing of NH 4 Cl and melamine, and the MgO template route under the similar synthetic conditions. The assembled symmetric OPCNs-based supercapacitor showed a maximum energy density of 8.2 Wh kg −1 at a power density of 450 W kg −1 within a voltage range of 0–1.8 V in 0.5 M Na 2 SO 4 aqueous electrolyte. Additionally, the cycle test over 10,000 runs suggested that this supercapacitor had good cyclic performance.
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高影响因子
Catalysis Science & Technology
·
2016
·Vol. 7
·期 1
·168-180
·
IF 5.287
Xiaoxiong Huang,Yong Men,Jinguo Wang,Wei An,Yuanqiang Wang
A series of magnesia–silica binary composite catalysts with different molar ratios were prepared using various preparation methods and evaluated for the one-step production of 1,3-butadiene (BD) from bio-ethanol. The MgO–SiO2 catalyst prepared by wet-kneading is distinguished from the samples prepared by other methods by its superior activity. An exceptionally high productivity of butadiene with the high ethanol conversion of 95% and BD selectivity of 77% was obtained over wet-kneaded hierarchical flower-like MgO nanostructures with the catalytic material made up of SiO2 spheres (with a MgO : SiO2 molar ratio of 65 : 35 at 450 °C and an WHSV of 4.1 h−1), which translates into an unprecedented BD yield of 0.025 mol gcat−1 h−1. The as-prepared catalysts were characterized by XRD, FESEM, BET, FT-IR, UV/vis, CO2-TPD and NH3-TPD. The Mg precursor used and the preparation method are found to influence the extent of MgO and SiO2 interactions during preparation, as estimated by various techniques, which, in turn, was found to correlate with the catalytic performance. A subtle balance of surface acidity/basicity was found to be necessary to achieve a high butadiene yield which can be obtained by variation of MgO : SiO2 ratios in wet-kneaded samples. In view of the difference in catalytic activity and the physicochemical properties of the MgO–SiO2 composite catalysts, the Si–O–Mg chemical bond formed by the strong MgO and SiO2 interaction is suggested to be essential for the balanced surface acid/base sites in relation to the strong interaction between MgO and SiO2 and the consequent high catalytic performance.
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高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Jinbo Song,Ting Qu,Jinpeng Zhang,Yanxin Jia,Jieying Jing,Wen-Ying Li
CaCO 3 -MgO sorbents were prepared through mechanochemical methods to overcome the poor stability of MgO sorbents caused by sintering and agglomeration. The alkali metal salt-promoted MgCa5 (AMS-MgCa5) sorbent, with 5 wt% CaCO 3 doping, demonstrated the highest cycling stability, with an initial CO 2 capture capacity of 13.9 mmol/g, which stabilized at 9 mmol/g after 10 cycles, and the CO 2 capture ratio reached 77 %. The superior cycling stability of the sorbents was attributed to the existence of CaMg(CO 3 ) 2 , which enhanced the capture rate during the CO 2 chemisorption process. Additionally, the doped CaCO 3 served as an inert support, enhancing CO 2 diffusion and mass transfer, ensuring the uniform coverage of alkali metal salt on the MgO surface, and inhibiting the growth of MgO particles.
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高影响因子
MOLECULES
·
2024
·Vol. 29
·期 6
·1402
·
IF 4.2
Zaifa Yang,Ruoxuan Wang,Shuyu Yang,Hongxia Bu,Jingfen Zhao
Mn4+-doped red-light-emitting phosphors have become a research hotspot that can effectively enhance photosynthesis and promote morphogenesis in plants. Herein, the red phosphor La3Mg2NbO9:Mn4+was synthesized through the solid-state reaction method. The effects of adding H3BO3and a charge compensator R+(R = Li, Na, K) on the crystal structure, morphology, quantum efficiency, and luminous performance of the La3Mg2NbO9:Mn4+phosphor were systematically analyzed, respectively. The results showed that adding H3BO3flux and a charge compensator improved the quantum efficiency and luminescence intensity. The emission intensity of the phosphor was enhanced about 5.9 times when Li+was used as the charge compensator, while it was enhanced about 240% with the addition of H3BO3flux. Remarkably, it was also found that the addition of H3BO3flux and a charge compensator simultaneously improved the thermal stability at 423 K from 47.3% to 68.9%. The prototype red LED fabricated using the La3Mg2NbO9:Mn4+,H3BO3,Li+phosphor exhibited a perfect overlap with the phytochrome absorption band for plant growth. All of these results indicate that the La3Mg2NbO9:Mn4+,H3BO3,Li+phosphor has great potential for use in agricultural plant lighting.
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PubMed
高影响因子
Advanced Optical Materials
·
2024
·
IF 8
Shichao Lv,Feng Zhang,Xueliang Li,Tianzhi Jiang,Zhenlei Yang,Jin Li,Hongliang Zhu,Junpeng Guo,Jianrong Qiu,Shifeng Zhou
Effective online monitoring of the spatial distribution of high-energy radiation is of significant importance in various fields such as medical imaging, high-energy physics, and homeland security. However, achieving radiation detectors with both high sensitivity and minimal disturbance is an enormous challenge. The present study introduces a solution to this bottleneck issue through the development of a full-inorganic scintillating fiber, successfully demonstrating its application in constructing a radiation monitoring device. The scintillating fiber, activated with Ce 3+ and fabricated using the melt-in-tube approach, is lightweight with a density of 2.5 g cm −3 and exhibits efficient scintillating emission with a light yield of 4000 photons MeV −1 . These characteristics enable the achievement of radiation detection with high sensitivity while keeping disturbance to the incident radiation beam at a minimum. Furthermore, 2D and 3D radiation beam monitors are constructed based on these scintillating fibers, facilitating spatial radiation monitoring. The findings demonstrate that full-inorganic scintillating fibers and devices offer a synergistic combination of high sensitivity and negligible disturbances. This progress not only introduces a novel full-inorganic fiber for radiation detection but also suggests promising applications in various nuclear fields where 3D radiation beam tracking is essential.
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高影响因子
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