ACS Applied Optical Materials
·
2024
·
IF 0
Yuhang Zheng,Shoujun Ding,Yong Zou,Xubing Tang,Wenpeng Liu
Sc(NbO4)x(TaO4)1–x is composed of ScNbO4 and ScTaO4 matrices, containing [NbO4]3– and [TaO4]3– self-activating luminescent groups, and is a series of potential high-performance luminescent matrixes. In this work, trivalent samarium (Sm3+)-doped Sc(NbO4)x(TaO4)1–x (SNTO) phosphors have been synthesized through a traditional solid-state reaction method. The quenching concentration of Sm3+ in the SNTO matrix was 2 atom %, and the quenching mechanism was analyzed. Especially, the effects of [NbO4]3–/[TaO4]3– component ratios on luminescent properties and thermal stability were studied. The temperature-dependent fluorescence spectra and decay curves of Sm:SNTO phosphors, spanning from 300 to 510 K, have unveiled their luminescent thermal stability. The activation energy Ea representing luminescent thermal stability was found to be sensitive to the [NbO4]3–/[TaO4]3– component ratios, and the maximum Ea value was 0.272 eV. The findings suggest that the luminescent thermal stability of Sm3+-doped Sc(NbO4)x(TaO4)1–x orange-reddish phosphors can be regulated by the host component. Thus, this study can provide a reference for achieving high luminescent thermal stability phosphors through cosubstitution component regulation.
研究领域:
材料科学
·
无机化学
·
光学
✓ 已验证
DOI
CERAMICS INTERNATIONAL
·
2016
·
IF 2.758
Yong Huang,Min Hao,Xiaofeng Nian,Haixia Qiao,Xuejiao Zhang,Xiaoyun Zhang,Guiqin Song,Jiachi Guo,Xiaofeng Pang,Honglei Zhang
Bacterial infection are serious complications for biomedical implants in the orthopedic and dental fields, and the ideal implants should combine good antibacterial ability and bioactivity. In this paper, we have fabricated the strontium/copper substituted hydroxyapatite (SrCuHA) coating on the commercially pure titanium (CP-Ti) and studied their effect on antibacterial and in vitro cytocompatible properties. Cu was incorporated into HA in order to improve its antimicrobial properties. Sr was added as a second binary element to improve the biocompatibility. The structural and morphological characteristics of the SrCuHA coatings were investigated using various analytical techniques. The presence of Sr 2+ and Cu 2+ in solution led to reduced roughness of the coating and finer nucleus size formed. The results highlight that Sr 2+ and Cu 2+ were homogenously incorporated into HA lattice to form SrCuHA coatings. Inductively coupled plasma mass spectrometry (ICP-MS) was used for the leach out analysis of the samples. A low contact angle value revealed the hydrophilic nature. In vitro electrochemical corrosion studies indicated that the SrCuHA coating sustain in the stimulated body-fluid (SBF), exhibiting superior corrosion resistance with a lower corrosion penetration rate than the bare CP-Ti substrate. The SrCuHA coatings can kill Escherichia coli to a certain extent during the first few days, which might be due to the Cu substitution in the coating. An enhancement of in vitro osteoblast adhesion, proliferation, and alkaline phosphatase activity was observed, which could lead to the optimistic orthopedic and dental applications.
研究领域:
生物医学工程
·
材料科学
·
微生物学
✓ 已验证
DOI
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2023
·
IF 4.1
Kang Cheng,Xinyue Liu,Weichao Huang,Xinyong Gong,Chaoyong Deng
Cr 3+ is an ideal activator for near-infrared phosphor. Cr 3+ ions have an electronic structure in which the outermost shell is not fully filled, which makes the emission of Cr 3+ susceptible to the crystal field environment and the change of local structural. Therefore, when Zn 2+ -Ti 4+ ion pairs are replaced with Al 3+ -Al 3+ /Ga 3+ -Ga 3+ ion pairs , changes in the crystal structure and the crystal field are strengthened, which improves the luminescence performances of Zn 2 TiO 4 :Cr 3+ phosphors. The thermal stability and the intensity of the luminescence can be clearly seen to have increased.
研究领域:
材料科学
·
无机化学
·
发光材料
·
固体物理
·
功能材料
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Tongshu Zhang,Yuheng Zhang,Fulong Hao,Huidong Xie,Zhihua Leng,Zuobin Tang
The development of highly efficient and thermally stable phosphors with ultra-broadband emission is critical to advancing the practical applications of portable near-infrared phosphor-converted light-emitting diodes (NIR pc-LEDs). Herein, we employ the chemical unit co-substitution strategy to quantitatively introduce Mg 2+ and Si 4+ ions into the garnet lattice, yielding the high-performance Lu 3 Ga 3 MgSiO 12 :Cr 3+ (LGMSO:Cr 3+ ) phosphor, which exhibits an ultra-broadband emission with a full width at half maximum (FWHM) of 181 nm and a photoluminescence quantum yield (PLQY) of 63.7 %. Structural analysis reveals that Mg 2+ -Si 4+ co-substitution induces multiple Cr 3+ occupancy within distorted (Ga/Mg)O 6 octahedra, broadening emission band via a multisite-induced effect, as confirmed by low-temperature spectral analysis (80 K) and crystal field calculations. Furthermore, co-doping with Yb 3+ enhances the emission bandwidth and thermal stability (from 48.4 % to 71.0 % at 423 K), attributed to the combined contributions of Cr 3+ emission ( 4 T 2 ( 4 F ) → 4 A 2 ) and Yb 3+ emission ( 2 F 5 / 2 → 2 F 7 / 2 ) excited via Cr 3+ energy transfer. Packaged LED devices show superior night vision and non-destructive biological penetration capabilities, highlighting the phosphor’s potential for NIR pc-LED applications.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Lu Wen,Chaojie Li,Houqun Xiao,Huazhou Hu,Chaobin Lai,Luocai Yi,Qingjun Chen
The ZrCo alloy stands out as one of the most promising candidates for hydrogen isotope storage materials in nuclear fusion, owing to its extremely low equilibrium hydrogen pressure (10 −3 Pa, 20 ℃). However, ZrCo experiences severe disproportionation reactions during dehydrogenation/hydrogenation processes, which lead to significant performance degradation. To address this, we have introduced V and Ti into the ZrCo alloy, resulting in the Zr 0.8 V x Ti 0.2-x Co (x = 0–0.15) series. Our research indicates that the addition of V and Ti reduces the lattice parameters, thereby increasing the platform pressure for hydrogen desorption and decreasing the enthalpy and entropy of the desorption reaction. This modification allows for a lower desorption temperature and enhances the alloy's resistance to hydrogen-induced degradation. Remarkably, the hydrogen storage capacity of the Zr 0.8 V x Ti 0.2-x Co(x = 0–0.15) alloys remains stable after 19 h of desorption. Furthermore, the Zr 0.8 V 0.05 Ti 0.15 Co alloy demonstrates exceptional cycling stability, retaining over 99 % of its hydrogen storage capacity after 50 cycles. First-principles calculations have clarified the adsorption energies of hydrogen at different binding sites, revealing the following order of stability: E b(Ti-V) < E b(Zr-Ti) < E b(V-Zr) < E b(Zr-Zr) . The hydrogen absorption and desorption kinetics of the Zr 0.8 V x Ti 0.2-x Co alloys follow the trend: Zr 0.8 V 0.15 Ti 0.05 Co > Zr 0.8 V 0.1 Ti 0.1 Co > Zr 0.8 V 0.05 Ti 0.15 Co > ZrCo, indicating optimized performance with the introduction of V and Ti. This study not only provides a viable solution to the disproportionation issue in ZrCo alloys but also offers valuable insights into the design of high-performance hydrogen isotope storage materials for nuclear fusion applications.
研究领域:
材料科学
·
核聚变工程
·
金属氢化物
·
储氢材料
·
物理化学
·
计算材料学
✓ 已验证
产品关联
DOI
高影响因子
ChemElectroChem
·
2022
·Vol. 9
·期 12
·e202200156
·
IF 4.782
Jing Gao,Xiaolin Sun,Cheng Wang,Yuan Zhang,Li Yang,Depeng Song,Yue Wu,Zewen Yang,Takeo Ohsaka,Futoshi Matsumotoc,Jianfei Wu
Graphical Due to the Sb- and O-cosubstitution , the Li 10 SnP 1.84 Sb 0.16 S 11.6 O 0.4 sulfide electrolyte with high ionic conductivity, broad electrochemical window, and high air stability was prepared for high-performance all-solid-state battery. Electrochemical measurement and postmortem analysis of cycled electrodes results revealed that the mechanism of improving cell stability is the inhibition of electrolyte side reaction in the cathode. Sb- and O-cosubstituted sulfide electrolyte was demonstrated to be a promising solid electrolyte for practical all-solid-state battery. The development of solid-state electrolytes with high ionic conductivity, broad electrochemical stability, and high air stability is the key to realizing the practical application of all-solid-state batteries. Herein, Sb- and O-cosubstituted Li 10 SnP 2 S 12 sulfide electrolytes are prepared for the first time. An appropriate amount of Sb and O substitution provides the optimized Li 10 SnP 1.84 Sb 0.16 S 11.6 O 0.4 electrolyte with the highest ionic conductivity of 2.58 mS ⋅ cm −1 at RT. Furthermore, the cyclic voltammetry analysis results demonstrate that the Li 10 SnP 1.84 Sb 0.16 S 11.6 O 0.4 electrolyte displays a broader electrochemical window of 1.4–5.0 V vs. Li + /Li than that of 1.7–2.4 V vs. Li + /Li for the nonsubstituted Li 10 SnP 2 S 12 . Moreover, benefitting from the soft acid Sb 5+ and hard base O 2− dual substitution, the air stability of electrolyte has been improved. Furthermore, the LiNbO 3 @LiCoO 2 /Li−In cell assembled with the Li 10 SnP 1.84 Sb 0.16 S 11.6 O 0.4 electrolytes exhibits a high initial discharge specific capacity of 124.7 mAh ⋅ g −1 at 0.05 C and maintains 85 % capacity retention after 200 cycles at 0.5 C and 25 °C, which is much higher than that of the cell assembled with the Li 10 SnP 2 S 12 electrolytes. XPS measurement results revealed that the mechanism of improving cell stability is the inhibition of electrolyte side reaction in the cathode. Sb- and O-cosubstituted Li 10 SnP 2 S 12 was demonstrated to be a promising solid electrolyte for practical all-solid-state batteries.
研究领域:
材料科学
·
电化学
·
电池技术
✓ 已验证
DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2023
·
IF 3.6
Bingkai Gao,Lei Zhang,Runqiu Peng,Panlai Li,Qian Wu,Zhijun Wang
The exploration of performance luminescence near-infrared (NIR) material is crucial for rapidly developing NIR spectroscopic techniques. Herein, the NIR LaMg 0.5 Sn 0.5 O 3 :Cr 3+ phosphor was synthesized by a high temperature solid-state method. And its luminescence performance were improved by [In 3+ -Sc 3+ ] substituting for [Mg 2+ -Sn 4+ ]. The half-peak width can be expanded to 211 nm, the emission intensity can reach the seven times of that un-substitution, and the emission intensity at 423 K was maintained at 60 % of that at room temperature , moreover, the internal quantum efficiency can reach 54.2 %. On this basis, the phosphor converted light emitting diodes ( pc -LEDs) were achieved by combining La(Mg 1-x Sn 1-x In x Sc x ) 0.5 O 3 :Cr 3+ with blue LED, importantly, it can be applied to the biodetection and night vision lighting, which indicate its application value.
研究领域:
材料科学
·
生物医学工程
·
光学材料
·
分子影像
·
转化医学
·
光电子学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Run Cai,Likun Wen,Yihua Cao,Yindan Wu,Yichen Song,Xinyu Wang,Hanyang Zhou,Yurui Zhang,Xiaoping Dai,Xin Zhang
The benzene-methanol alkylation offers a strategic route to valorize methanol surplus and meets the growing demand for high-purity aromatics. For industrially viable shaped catalysts, achieving a balance between sufficient acidity and optimal diffusion capacity remains critical. Traditional shaping methods using binders inadvertently compromise mass transfer efficiency within zeolite crystals while introducing strong acid sites that disrupt the tailored weak-acid properties. To overcome these limitations, we developed a dual-approach strategy employing 1) B-Mg-co- substitution in ZSM-5 frameworks to effectively suppress ethylbenzene generation while enhancing catalytic durability, and 2) recrystallization-driven structural engineering to create binder-free architectures featuring cheese-like macropore. Intelligent gravimetric analysis (IGA) and fluorescence probe diffusion mapping further reveals three-dimensionally interconnected micro-meso-macroporous networks that facilitate enhanced molecular transport for both small and bulky aromatic species. The optimized catalyst demonstrates remarkable stability during extended operation (1008 h) under 460 °C, 0.4 MPa and 2.5 h −1 , achieving 45–50 % benzene conversion (X B ) with toluene selectivity (S T ) ~50 %, C 8 selectivity (S C8 ) ~37 %, C 9+ selectivity (C 9+ ) ~ 14.0 %, and yield of EB in C 8 (Y EBinC8 ) <9 %. This work establishes a morphology-directed synthesis protocol for isomorphously substituted zeolites, offering a scale-up manufacturing route for acid site-engineered catalysts that combine hierarchical porosity with optimized Brønsted-Lewis acid synergy.
研究领域:
催化化学
·
材料科学
·
化学工程
·
石油化学加工
·
纳米多孔材料
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2023
·Vol. 106
·期 11
·6577-6585
·
IF 3.9
Yuting Zhang,Huan Tu,Guoying Zhao,Jingshan Hou,Yufeng Liu,Xin Qiao,Zhongzhi Wang,Bo Li,Ji-Guang Li,Feng Wang,Yongzheng Fang
Compared with other fluorescent crystal phases, garnet has better structural stability in a glass matrix and renders precisely controllable emissions due to the abundant lattice control positions. In this work, we regulate the coordination field of Ce 3+ ion based on the co-substitution method and achieve the spectra regulation in the yellow–green range. We used Ba 2+ –Si 4+ cations to replace Y 3+ –Al 3+ cations in Y 3 Al 5 O 12 (YAG) matrix to obtain blue-shift of the emission peak from 552 to 539 nm. The centroid shift and crystal field splitting decrease with the decreasing covalency of the bond between the Ce 3+ ion and the surrounding anions owing to the higher electronegativity of Si 4+ ions than Al 3+ ions. The corresponding fluorescent films were prepared by a low-temperature co-sintering process based on the as-made Ba 2+ –Si 4+ co-substituted phosphor. X-ray powder diffractometer and scanning electron microscopy images showed that the fluorescence crystals were less eroded and evenly dispersed in the glass matrix. Spectral analysis showed that the garnet phase was protected by using lead-free borosilicate glass with a low melting point, and the quantum efficiency of phosphor-in-glass (PiG) retains 98% of the corresponding phosphor. By adjusting the ratio of garnet phosphor to commercial red nitride phosphors, a warm white fluorescence with a color rendering index of 80.3 and color temperature of 3899 K was obtained. The prepared warm white film has potential application value in the whole spectra field.
研究领域:
材料科学
·
光电子学
·
固态照明
·
无机化学
·
晶体场理论
✓ 已验证
DOI
高影响因子
Science China-Materials
·
2025
·
IF 7.4
Peng Chunli,Tang Baoling,Zhang Xuejie,Molokeev Maxim S.,Zhang Haoran,Lei Bingfu
Near-infrared (NIR) spectroscopy has significantly advanced NIR light sources. However, creating NIR emitters with optimal luminescence properties, high thermal stability, and adjustable emission peaks poses a critical challenge for future smart NIR devices. We introduced a chemical unit cosubstitution strategy by incorporating Ca 2+ and Sn 4+ ions into the garnet structure. Through this approach, Y 3− y Ca y Ga 4.95− y Sn y G 12 :0.05Cr 3+ ( y = 0–1) phosphors were developed by modulating the A&C ligands, resulting in emission centers ranging from 708 to 768 nm. The modified local environment of Cr 3+ accounts for the increased light intensity (2.71 times) and broadening observed. Furthermore, this study investigated the impact of varying Cr 3+ concentrations (Y 2.6 Ca 0.4 Ga 4.6− x Sn 0.4 G 12 : x Cr 3+ ) on the production of high-performance phosphors. Compared with Y 3 Ga 4.93 G 12 :0.07Cr 3+ , the optimized phosphor exhibited exceptional external quantum efficiency (EQE = 34.96%). The luminescence enhancement is attributed to an increase in radiative transitions caused by octahedral Jahn-Teller distortion, whereas the notable thermal stability (91.3% at 423 K) is attributed to the presence of weak electron-phonon coupling (EPC) and oxygen vacancy (O V ) defects. Finally, by combining it with a 450 nm blue LED chip, we constructed a near-infrared phosphor-converted LED (NIR pc-LED) device with superior electroluminescence efficiency (18.8% @ 100 mA), increasing the ultralow quenching rate (< 5% intensity loss after 30 days of operation) and demonstrating remarkable performance in plant lighting applications.
研究领域:
材料科学
·
光学材料
·
固态照明
·
光子学
·
植物生物技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）