Advanced Healthcare Materials
·
2024
·
IF 10
Wenlin Huang,Xu Wang,Zhenyu Zhao
Mg 2+ (Magnesium ion) can affect bone tissue metabolism by regulating related signaling pathways in bone metabolism. However, how to realize precise controlled release of Mg 2+ in bone regeneration treatment still presents a challenge. Herein, for the first time, the GelMA-BP (Gelatin Methacryloyl-Bisphosphonate) and the composite nano-bubble system are fused to construct the Mg 2+ blasting controlled-release hydrogel microspheres, the stability of the nano-bubbles in the microspheres is enhanced through metal coordination complexation, and the burst of the nano-bubbles is controlled by using ultrasonic cavitation to achieve the precise controlled release of Mg 2+ , ultimately effectively promoting bone reconstruction. First, GelMA-BP composite is prepared by Schiff base reaction. Second, the nanobubble BP (Bisphosphonate) system is constructed, and Mg 2+ is combined with the ligand coordination to prepare the composite nanobubble system. Thirdly, through Mg 2+ co-coordination, the ultrasound-triggered Mg 2+ blasting controlled release microspheres were prepared to achieve bone repair. Overall, this innovative strategy effectively solves the problem of accurate controlled release of Mg 2+ , and finally effectively activates in situ bone tissue regeneration.
研究领域:
生物医学工程
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材料科学
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组织工程
·
骨科
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DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2022
·
IF 10.53
Yunhao Li,Shuhao Wang,Wenyuan Wu,Haijun Yu,Ruxin Che,Guodong Kang,Yiming Cao
Nanofiltration is considered a promising technology for separation of multivalent/monovalent ions such as extracting lithium from Salt Lake brine with high Mg 2+ /Li + ratio. However, the nanofiltration membranes fabricated via conventional interfacial polymerization process generally possess negatively charged surface and have low Mg 2+ /Li + selectivity. Herein, we proposed a new and facile method, i.e., reversed interfacial polymerization (RIP), to prepare nanofiltration membranes with positively charged surface and uniform charge distribution. The sequence of amine (polyethyleneimine, PEI) and acyl chloride (trimesoyl chloride, TMC) monomers on polysulfone support was reversed compared to the conventional interfacial polymerization (IP) process. Moreover, the solvent of amine monomer was acetone instead of water. The nanofiltration membranes fabricated by this method exhibited higher water flux (from 4.88 to 22.25 Lm −2 h −1 ) and MgCl 2 rejection (from 84.36% to 97.71%). Meanwhile, LiCl/MgCl 2 separation factor in single salt solution reached up to 13.93, which was almost quadruple compared to the conventional control membrane. In addition, the developed nanofiltration membrane also exhibited an excellent separation selectivity ( S Li, Mg = 9.22) in mixture system (Mg 2+ /Li + mass ratio of 20), which had good application potential in extracting lithium resources from Salt Lake brine.
研究领域:
材料科学
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环境工程
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化学工程
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DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2022
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IF 10.53
Quan Li,Yahui Liu,Yanghe Liu,Yanhong Ji,Zhenyu Cui,Feng Yan,Jianxin Li,Mohammad Younas,Benqiao He
An electric field assisted nanofiltration (ENF) process was used for Mg 2+ /Li + efficient separation from a MgCl 2 /LiCl solution and a simulated salt-lake brine. The influence of membrane pore structure , electric property, and other process parameters on the Mg 2+ /Li + separation performance in the ENF was systematically investigated. The structural coefficient ( λ ) of NF membrane was introduced to quantify the membrane pore structure including pore size, pore length and porosity. Results suggested that membrane pore structure, instead of membrane pore size, had a critical role on the ENF separation performance. Direct current electric field (DC-EF) markedly promoted Mg 2+ /Li + separation. However, the effect of alternating current EF (AC-EF) with different frequencies was nominal. The synergistic effect between λ and DC-EF on Mg 2+ /Li + separation was also demonstrated. A low-concentration feed with suitable Mg 2+ /Li + mass ratio and pH value, and low transmembrane pressure were beneficial to Mg 2+ /Li + separation. For 2000 ppm MgCl 2 /LiCl feed solution with a Mg 2+ /Li + mass ratio of 20, a nearly complete rejection to Mg 2+ and a high Li + flux simultaneously achieved; correspondingly, a separation factor of Li + over Mg 2+ ( S Li,Mg ) reached above 7000, which is 2-3 orders of magnitude higher than that of pure NF membrane. For a simulated 10,000 ppm brine solution, a S Li,Mg value was up to above 50. The study suggested that ENF process witnessed simple and efficient separation performance for Li + extraction from salt lakes.
研究领域:
化学工程
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材料科学
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DOI
高影响因子
OPTICS LETTERS
·
2024
·Vol. 49
·期 9
·2245-2248
·
IF 3.1
Xiaolan Zhou,Xiaolan Zhou,Shengyuan Chen,Shengyuan Chen,Cong Zhang,Cong Zhang,Xu Huang,Xu Huang,Kailei Lu,Kailei Lu,Jianqi Qi,Jianqi Qi,Jianqi Qi,Tiecheng Lu,Tiecheng Lu,Tiecheng Lu,Tiecheng Lu
Narrowband green-emission, combined with superior physicochemical stability and thermal performance, is regarded as a common pursuit in backlight display applications. However, mainstream phosphor-converted materials composed of resin or silicone resin easily encounter the dilemma of thermal decomposition and chemical corrosion for practical use. To overcome this problem, in this work, Mn2+/Mg2+ co-doped AlON ceramic is successfully realized with ultra-narrowband green-emission and high transparency. The luminescent property of AlON: Mn2+–Mg2+ ceramic exhibits narrowband green emission centered at 509 nm with a full width at half maximum of 36 nm, which is smaller than the corresponding powder counterpart (44 nm). Moreover, AlON: Mn2+–Mg2+ ceramic presents a wide color gamut (103.6%) and high color purity (74%). Concurrently, high transmittance of this ceramic, at 82%, unveils a potential innovation in the display technology field. This work may facilitate the development of narrowband green light-emitting converters based on AlON: Mn2+–Mg2+ transparent ceramics in large color gamut backlight display applications.
研究领域:
材料科学
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光学工程
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显示技术
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DOI
PubMed
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
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2020
·
IF 4.495
Qinghong Meng,Xuejiao Wang,Qi Zhu,Ji-Guang Li
A series of phase-pure [(Gd 0.6 Lu 0.4 ) 0.99 Ce 0.01 ] 3 [Al 1- z (Mg/Si) z ] 5 O 12 ( z = 0-0.10) garnet phosphor powders were prepared via gel-combustion, which were then sintered into ceramics (up to 1550 °C) under atmospheric pressure. Dilatometry revealed that equimole of Mg 2+ /Si 4+ substitution for Al 3+ accelerates densification and lowers the activation energy for grain boundary diffusion in the intermediate stage of sintering (∼1150–1370 °C), which was assayed to be ∼353 kJ/mol for z = 0 and ∼289 kJ/mol for z = 0.10. The acceleration effects of Mg 2+ /Si 4+ on sintering and grain growth were further demonstrated by the results of ramp and holding sintering. Firing at 1550 °C for 4 h also produced ∼99 % dense ceramics for the Mg 2+ /Si 4+ codoped garnet powders. Through considering crystal splitting of the Ce 3+ 5d energy level, photon-phonon coupling, and crystal structure/microstructure, the influences of Mg 2+ /Si 4+ content and material form on Ce 3+ luminescence, including intensity, external/internal quantum efficiencies, emission wavelength, CIE color coordinates and decay time, were clarified in detail.
研究领域:
材料科学
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光学工程
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产品关联
DOI
高影响因子
Laser & Photonics Reviews
·
2025
·
IF 10
Yang Tang,Qingyu Xie,Xuanming Zhang,Jiwei Ma,Hao Xie,Yongfeng Liu,Liang Zhao,Dongdong Yan,Xiaoyu Wang,Weixiang Ye
Cs 3 Cu 2 Cl 5 nanocrystals (NCs) have emerged as promising optoelectronic materials owing to their efficient self-trapped exciton (STE) emission. However, their limited environmental stability has significantly constrained their application in light-emitting diodes (LEDs). In this work, a facile ambient-air synthesis strategy is developed for Mg 2 ⁺-doped Cs 3 Cu 2 Cl 5 NCs that simultaneously addresses both stability and emission efficiency challenges. Remarkably, optimal Mg 2 ⁺ doping (20%) enhances the photoluminescence quantum yield (PLQY) from 28.69% to 59.3%. Comprehensive theoretical investigations through density of states (DOS) calculations and ab initio molecular dynamics (AIMD) simulations demonstrate that Mg 2 ⁺ doping induces bandgap narrowing for enhanced radiative recombination while reinforcing the crystal lattice stability. When integrated with a UV LED chip, the optimized NCs enable the fabrication of high-performance green LEDs exhibiting outstanding luminance (17 281 cd m − 2 ) and excellent color stability (CIE coordinates: 0.354, 0.518). This study provides not only a practical synthetic approach for stable copper halide NCs but also valuable insights for designing efficient STE emitters for optoelectronic applications.
研究领域:
材料科学
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光学工程
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理论计算
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Yujiao Guo,Yue Yu,Ping Ning,Jiangzhao Chen
Spinel LiMn 2 O 4 has the potential to be used as a cathode material in lithium-ion batteries because of its affordability, low toxicity, and excellent charge/discharge capability. However, severe capacity attenuation results from the degradation of its long-cycle and high-rate performance caused by the Jahn-Teller distortion and Mn dissolution. Herein, a simple solid-state combustion process is used to successfully prepare the Mg 2+ -Al 3+ co-doped LiMn 2 O 4 with truncated octahedral morphology. The Jahn-Teller distortion is inhibited by the stable Mn-O framework and the decreased lattice constant, which in turn lowers the dissolution of Mn. Moreover, Mg 2+ -Al 3+ co-doped LiMn 2 O 4 have lower activation energy and greater Li + diffusion coefficient. As a result, the optimized LiMg 0.03 Al 0.10 Mn 1.87 O 4 delivers satisfied initial capacity of 102.1 mAh‧g −1 with a capacity retention of 76.2 % after 1000 cycles at 10 C. Even at the ultra-high rate of 15 C and 20 C, Mg 2+ -Al 3+ co-doped sample also remain desired structure stability and cycling performance, which remains 73.8 % of its original capacity after 1000 cycles at 20 C. This work provides a reference for developing high-performance and stability cathode materials for lithium-ion battery.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2024
·
IF 5.7
Zhibin Ye,Ziwang Zhang,Nan Yang,Zhuo Li,Weijie Huang,Jianxin Shi
Artificial light sources have a significant impact on the cultivation of houseplants. In this work, a novel single-phase dual-emission phosphor, Ca18Na3Y(PO4)14:Eu2+,Mn2+ (CNYPO:Eu2+,Mn2+), was synthesized and the emission spectra were modulated by co-doping of Mg2+ to better match the absorption of plants. The occupancies of Eu2+, Mn2+ and Mg2+ are analyzed by using the data of bond length from XRD Rietveld refinements and the emission spectra. The energy transfer process from Eu2+ to Mn2+ is proved through the photoluminescence spectra and decay curves. Benefiting from the efficient energy transfer, two broadband emissions peaking at 500 and 650 nm can be achieved, which meets the requirements of plant growth, and the luminescence colour can be tuned from cyan to white and finally to red by changing the ratio of Mn2+ to Eu2+. The internal quantum efficiency of CNYPO:0.18Eu2+,0.18Mn2+ is 76.8% under 340 nm excitation. The introduction of Mg2+ can regulate the occupation sites of Eu2+ and the emission peak position, improve the responsiveness to the plant absorption spectra, and tune the luminescence colour to white. Finally, a white light-emitting diode (WLED) device fabricated using CNYPO:0.18Eu2+,0.18Mn2+,2.16Mg2+ on a 365 nm chip has a high colour rendering index of 89.0 and a low correlated colour temperature of 3580 K, indicating that the prepared phosphor has potential applications in plant lighting and WLEDs.
研究领域:
材料科学
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光学工程
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农业科学
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产品关联
DOI
高影响因子
DESALINATION
·
2022
·
IF 11.211
Xiaojun Sun,Mengting Di,Li Gao,Lei Hu,Wenji Zheng,Xuehua Ruan,Xiaoming Yan,Gaohong He
Reverse electrodialysis (RED) is a promising membrane-based technology for salinity gradient power while it faces the challenge of the energy loss caused by the insufficient monovalent/multivalent ion selectivity of the membranes (such as Na + /Mg 2+ ). Here, covalent organic frameworks (COFs) with nanometre-scale pores (pore size of ~8 Å) are designed as composite membranes to selectively conduct monovalent ion (Na + ~7.1 Å vs Mg 2+ ~8.6 Å) by size sieving. Compared with the commercial Neosepta CMX membrane, the COF composite membrane effectively inhibits the penetration of Mg 2+ without sacrificing Na + penetration flux in RED, which to a large extent reduces the energy loss in RED caused by the penetration of Mg 2+ . Even for Mg 2+ solution with high molar fraction of 30 %, the maximum power density (P d, max ) of CCM only shows a slight decrease of 1.7 %. In contrast, the P d, max of the commercial Neosepta CMX membrane severely decreases by 35.8 %. This study highlights the prospects of COFs as the significant material for designing monovalent ion selective membranes which can improve energy efficiency in RED.
研究领域:
材料科学
·
环境工程
·
能源技术
✓ 已验证
DOI
高影响因子
DESALINATION
·
2024
·
IF 8.3
Jia-Min Jin,Hao Ye,Tian-Hao Li,Ming-Bang Wu,Lin Liu,Juming Yao
Positively charged and non-toxic intermediate layers are highly desirable for the construction of nanofiltration membranes in the field of Mg 2+ /Li + separation. Herein, we have prepared dual-electric layer nanofiltration membranes via introducing positively charged quaternized cellulose nanocrystals (Q-CNC) beyond the negatively charged polyamide skin layers. On the one hand, the strong interactions between Q-CNC and piperazine (PIP) could regulate the thickness, roughness, and residual groups of the polyamide (PA) layers, resulting in improved water flux. On the other hand, the Q-CNC has lots of positive charges which are beneficial for enhancing the rejections of negatively charged polyamide skin layers towards divalent cations since the Donnan and electrostatic effects are long-range forces. Moreover, this effect could be amplified by reducing the thickness of skin layers or decreasing the contents of residual carboxyl groups via adjusting the monomer concentrations. The obtained nanofiltration membranes possess high water flux of 51 L/m 2 /h/bar, and rejection for MgCl 2 of 86 %. The separation factor of Mg 2+ /Li + is 29 when the Mg 2+ /Li + mass ratio in the feed solution is 20:1. Moreover, the nanofiltration membrane with Q-CNC intermediate layers (QNFM) has good antibacterial properties, showing great potential in the fields of lithium extraction from salt lakes.
研究领域:
材料科学
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环境工程
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale Research Letters
·
2018
·Vol. 13
·期 1
·1-8
·
IF 3.125
Zhang Zhenlong,Li Danna,Shi Wenjia,Liu Yanyan,Zhang Yan,Liu Yuefeng,Gao Huiping,Mao Yanli
A new up-conversion nanomaterial of Ho 3+ -Yb 3+ -Mg 2+ tri-doped TiO 2 (UC-Mg-TiO 2 ) was designed and synthesized with a sol-gel method. The UC-Mg-TiO 2 presented enhanced up-conversion fluorescence by an addition of Mg 2+ . The UC-Mg-TiO 2 was utilized to fabricate perovskite solar cells by forming a thin layer on the electron transfer layer. The results display that the power conversion efficiency of the solar cells based on the electron transfer layer with UC-Mg-TiO 2 is improved to 16.3 from 15.2% for those without UC-Mg-TiO 2 . It is demonstrated that the synthesized UC-Mg-TiO 2 can convert the near-infrared light to visible light that perovskite film can absorb to improve the power conversion efficiency of the devices.
研究领域:
材料科学
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能源科学
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Inorganic Chemistry Frontiers
·
2024
·Vol. 11
·期 23
·8526-8534
·
IF 6.1
Fang Xu,Jialin Zheng,Dai-Huo Liu,Ao Wang,Zhenjiang Li,Chunyan Xu,Mengqin Song,Beinuo Zhang,Zhengyu Bai,Zhongwei Chen
Manganese dioxide is considered an ideal cathode candidate material for aqueous zinc-ion batteries. However, its poor conductivity and nanostructural degeneration impede its further application. Herein, a 3 × 3 tunnel-structured τ-MnO2 cathode material was synthesized through the addition of excessive Mg2+. During its preparation, a portion of Mg2+ was embedded into the 3 × 3 tunnel of τ-MnO2 to stabilize the microstructure, while another portion of Mg2+ formed a new phase, i.e., Mg2(OH)3Cl·4H2O, adjoining τ-MnO2, resulting in a cathode material with heterointerface synergy between τ-MnO2 and Mg2(OH)3Cl·4H2O. The charge arrangement of the heterointerface between τ-MnO2 and Mg2(OH)3Cl·4H2O enabled more active sites and accelerated ion-diffusion kinetics. The introduction of Mg2(OH)3Cl·4H2O increased the proportion of Mn(IV) and suppressed the structural instability caused by Jahn–Teller distortion, thereby improving the electrochemical performance of the τ-MnO2 cathode (capacity retention of 86.7% after 1800 cycles at 1 A g−1).
研究领域:
材料科学
·
电化学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）