CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Xuelian He,Hang Zhang,Feiyan Xie,Chaochao Tao,Hualan Xu,Shengliang Zhong
High luminescence intensity and long persistent duration is desired for practical application of long persistent materials. But it still remains challenging due to insufficient phosphors to meet the commercial request and a general lack of understanding of luminescence mechanism. In this work, green persistent luminescent phosphor Zn 2 SiO 4 :Mn 2+ ,Pr 3+ was first synthesized by traditional solid-state reaction method with self-made SiO 2 submicrospheres as silicon source. The morphology, crystal structure, photoluminescence and the long afterglow performance have been investigated systematically. Interestingly, the longest persistent luminescence is observed for 0.025 Mn 2+ , 0.001 Pr 3+ co-doped Zn 2 SiO 4 with a persistent time of ∼2640 s at (0.32 mcd/m 2 ), which is 20 times longer than those of Zn 2 SiO 4 host or single Mn 2+ doped Zn 2 SiO 4 phosphors. The possible persistent mechanism has been discussed. The finding will be beneficial for developing persistent phosphors with superior functionalities.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2017
·
IF 2.686
Xiaoming Xie,Jie Chen,Yanhua Song,Xiuqing Zhou,Keyan Zheng,Xiangting Zhang,Zhan Shi,Haifeng Zou,Ye Sheng
Zn 2 SiO 4 :Eu 3+ phosphors with diverse morphologies, including rice-like, hexahedron-like, and column-like, have been successfully prepared by means of a simple hydrothermal approach followed by a subsequent calcinations process. The results indicate that the morphologies of the products can be adjusted by altering the pH value of the reaction system. The formation mechanisms of different morphologies of samples have been investigated in detail. Furthermore, under near ultraviolet excitation, the Zn 2 SiO 4 :Eu 3+ exhibits strong red emission corresponding to the 5 D 0 → 7 F 2 transitions of the Eu 3+ ions, which have potential applications in optical and biological areas. Meanwhile, luminescent characteristics of different morphologies have been explored and the column-like Zn 2 SiO 4 :Eu 3+ sample presents an optimum red luminescence. The CIE chromaticity diagram and the symmetry of the different morphologies phosphors also have been explored. In addition, the concentration quenching effects and decay kinetics behaviors of Zn 2 SiO 4 :Eu 3+ microstructures with optimum red luminescence were investigated and the strongest luminescent intensity and the longest lifetime were both in the composition of 0.03 mol Eu 3+ .
研究领域:
材料科学
·
光学
·
生物应用
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2024
·
IF 7.1
Qiuying Wang,Zhiwei Wang,Menghang Qi,Hang Zhao,Xin Xin,Anjali Verma,Theeranun Siritanon,Arthur P. Ramirez,M.A. Subramanian,Peng Jiang
The severe urban heat island effect emphasizes the heightened importance of reducing building energy consumption. Cool pigments with higher near-infrared reflectivity contribute to the overall coating performance of the building. In this work, a novel intense blue pigment with superior infrared reflectance based on Ni-doped Zn2SiO4 was successfully synthesized via the simple solid-state method. The crystal structure, oxidation states, and optical properties are analyzed. The oxidation state of Ni was confirmed to be +2 using magnetic analysis and XPS. The intense blue color exhibited by the solid solution is due to the 3T1(3F) → 3T1(3P) transition of Ni2+ at the tetrahedral sites. UV–vis–NIR spectra demonstrate that this pigment exhibits superior near-infrared reflectance compared to cobalt blue in the range of 900–1700 nm, indicating its potential application in the realm of building energy conservation.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
·
2023
·
IF 5.2
Jinpeng Lv,Jiadi Xie,Neshchimenko Vitaly
Implementation of lightweight and long-lasting thermal-control coatings (TCCs) is vital for regulating the surface temperature and energy consumption of spacecraft. Herein, Zn 2 SiO 4 and hexagonal boron nitride (hBN) based inorganic TCCs are developed with potassium silicate binder. The α s /ε H (solar absorptance/ hemispherical emittance) ratio of the Zn 2 SiO 4 , ZnO and hBN coatings are 0.096, 0.190 and 0.107, respectively. Compared to the classical ZnO based Z-93 coating, both Zn 2 SiO 4 /K 2 SiO 3 and hBN/K 2 SiO 3 coatings show superior initial thermophysical properties. After vacuum-proton irradiation, the α s of Zn 2 SiO 4 , Z-93 and hBN coatings increased from 0.091, 0.167 and 0.098 to 0.193, 0.253 and 0.241, respectively. Apparently, the as-developed Zn 2 SiO 4 coating exhibits exceptional heat-dissipation and radiation-resistance features in relation to the hBN and Z-93 TCCs.
研究领域:
材料科学
·
航天工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Qun Diao,Yong Zeng,Jimin Chen
With the rapid advancement of 5G communication technology, higher communication frequencies have pushed the development of the Luneburg lens (LL) towards greater integration and miniaturization. In this paper, a novel Zn 2 SiO 4 -TiO 2 (ZST) ceramic Flat Luneburg Lens (FLL) for the K-band is designed and successfully fabricated using vat-photopolymerization (VPP) 3D printing technology. By optimizing the rheological properties of the slurry alongside the photopolymerization and thermal treatment processes, the resulting ZST ceramic exhibits excellent microwave dielectric properties after sintering at 1250 °C: a dielectric constant ( εᵣ ) of 9.6933, a quality factor ( Q×f) reaching 85294 GHz, a frequency temperature coefficient ( τ f ) close to zero (-0.78 ppm/°C), and an extremely low dielectric loss (1.29×10 -4 ). Building upon this high-performance ZST ceramic, a miniaturized FLL with a diameter of 30 mm and a thickness of 4 mm was successfully fabricated via metamaterial structural design. The measured results indicate that the FLL achieved a maximum gain enhancement of 5.5 dBi. This work offers useful insights into the 3D printing manufacturing of high-performance microwave dielectric ceramics and their application in miniaturized and integrated radio frequency devices.
研究领域:
材料科学
·
通信工程
·
电子器件
·
增材制造
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2025
·
IF 5.5
Mengxia Xu,Shengqian Wang,Chaochao Tao,Songsong Ding,Hualan Xu,Shengliang Zhong
Here, we report a synthesis method of Zn2SiO4@SiO2 hollow nanoparticles with adjustable thickness. A core–shell structured coordination polymer (CP) @ silica precursor was constructed by encapsulating silica on the surface of the CP through surface adsorption induced self-assembly. Then, the ideal shapes and large hollow cavities were produced through high-temperature calcination, and the formation process of hollow spheres was studied. Thanks to the hollow structure of the material, it has excellent drug loading capacity. It is worth noting that the thickness of the silica shell can be modulated by adjusting reagent amounts, calcination temperature, and time. Furthermore, this method exhibits broad applicability and can be extended to the synthesis of other hollow metal oxide materials. Persistent luminescence (PresL) was achieved through a simple ion-doping strategy. Notably, the silica shell thickness was found to regulate luminescence performance, and its underlying mechanism was further explored. This study not only establishes a synthetic route for designing hollow-structured PersL materials, but also offers perspectives on regulating the structure–performance relationships in multiphase composite materials. We hope the methodology developed and luminescent properties observed in this study will inspire the development of other innovative architectures integrating both physiological compatibility and theranostic capabilities.
研究领域:
材料科学
·
纳米技术
·
无机化学
·
药物递送
·
发光材料
✓ 已验证
产品关联
DOI
高影响因子
Advanced Healthcare Materials
·
2023
·
IF 10
Yanxin Zhang,Xin Li,Zhaowenbin Zhang,Huili Li,Dongmin Chen,Yiren Jiao,Chen Fan,Zhen Zeng,Jiang Chang,Yuhong Xu,Baowei Peng,Chen Yang,Yumei Que
In the pursuit of therapeutic strategies for myocardial infarction (MI), a pivotal objective lies in the concurrent restoration of blood perfusion and reduction of cardiomyocyte apoptosis. However, achieving these dual goals simultaneously presents a considerable challenge. In this study, a Zn 2 SiO 4 bioceramic capable of concurrently sustaining the release of bioactive SiO 3 2− and Zn 2+ ions, which exhibit a synergistic impact on endothelial cell angiogenesis promotion, cardiomyocyte apoptosis inhibition, and myocardial mitochondrial protection against oxygen-free radical (reactive oxygen species) induced injury is developed. Furthermore, in vivo outcomes from a murine MI model demonstrate that either systemic administration via tail vein injection of Zn 2 SiO 4 extract or local application through intramyocardial injection of a Zn 2 SiO 4 composite hydrogel promotes cardiac function and reduces cardiac fibrosis, thus aiding myocardial repair. This research is the first to elucidate the advantageous effects of dual bioactive ions in myocardial protection and may offer a novel therapeutic avenue for ischemic heart disease based on meticulously engineered bioceramics.
研究领域:
心脏病学
·
生物医学工程
·
材料科学
·
治疗学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Physical Chemistry C
·
2024
·
IF 3.3
Ze Qiu,Qian Wen,Dong Wu,Wencai Cheng,Congcong Ding,Yi Liu,Xirui Lu
Maximizing the retention of radioactive iodine in the solidified body is the fundamental solution to handling iodine-containing silica gel waste. Herein, the waste was directly treated as one of the raw components of the glass, and the B–Bi–Zn–silica gel material was prepared at 550 °C. Research showed that silica gel was beneficial in increasing the density of the glass to 2.03 g·cm–3. The addition of silica gel caused the formation of a new crystalline phase (Zn2SiO4) in the glass. The glass transition temperature of the B–Bi–Zn glass was 337 °C. The silica gel had no effect on the glass transition temperature of the glass but decreased the heat of the reaction of the material. In addition, it could be concluded from the infrared spectrum that silica gel had a significant effect on the structural unit of the B–Bi–Zn material, and the intensity of the structural unit in the absorption band of 400–1600 cm–1 was weakened. The iodine element was uniformly distributed in the cured glass, and its leaching result of 7 days was 1.1 × 10–4 g·m–2·d–1, indicating that the immobilized matrix of iodine-containing glass-ceramics was stable.
研究领域:
材料科学
·
核化学与放射化学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Junge Chen,Yang Yu,Aihu Feng,Le Mi,Huixin Xiu,Yun Yu
Thermal control coatings (TCCs) are an essential part of the thermal control systems in the spacecraft. Solar absorptance and emittance are the key performance parameters of TCCs. To develop an ultra-low solar absorption and stable inorganic TCCs for surface radiator, different TCCs were prepared by co-sintering ZnO and SiO 2 nanoparticles to form Zn 2 SiO 4 /SiO 2 pigment in this work, and the optical properties and radiation stability were systematically studied. It is found that the coating based on composite pigment has high reflectivity in the ultraviolet band and excellent optical performance possessing the low solar absorption of 0.06. In addition, the Zn 2 SiO 4 /SiO 2 coating demonstrates the highest proton and electron radiation stability because that SiO 2 between Zn 2 SiO 4 particles acts as the relaxation center of the defects caused by radiation.
研究领域:
材料科学
·
航天工程
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS LETTERS
·
2019
·
IF 3.019
Meihua Fang,Jinpeng Lv
Passive thermal control coatings (TCCS) have been widely used to tune the thermal equilibrium of spacecraft. However, the performance of such coatings undergoes serious degradation due to the intensive UV absorption and the radiation damage of the pigments. We developed a Zn 2 SiO 4 pigment with a solar absorptance (α s ) as low as 0.078, which shows a distinctly high reflectance in the whole solar-radiation spectrum, especially in the high energy UV wavebands. Furthermore, after performing proton irradiation , the α s of ZnO, ZnTiO 3 pigments increase from 0.153 and 0.101 to 0.277 and 0.521, respectively, while Zn 2 SiO 4 rises to 0.212, which exhibits remarkable radiation resistance. We evidenced that Zn 2 SiO 4 pigments will not only significantly boost the performance of thermal control coatings but also be beneficial for UV shielding applications.
研究领域:
材料科学
·
航天器热控制
·
颜料化学
·
辐射效应
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2025
·Vol. 13
·期 22
·11413-11420
·
IF 5.1
Yixi Wu,Xingzhen Huang,Jing Li,Juan Du,Junjie Zhang
Dynamic time-dependent afterglow materials have shown good application potential in the field of anti-counterfeiting. However, their short decay time (<10 s) causes poor concealment and limits their application expansion. In this work, multiple afterglow emission centers with different decay rates have been produced in stable zinc silicate glass ceramics by phase transformation through a heat-treatment method, causing an effective long-lasting (>600 s) time-dependent afterglow that is tunable from orange/yellow to red. Mechanism analysis suggested that this is related to the varied substitution tendency of alkali metal ions into different phases (α,β-Zn2SiO4), leading to different depths of oxygen vacancies, which are favorable for room-temperature afterglow. Finally, we propose a novel anti-counterfeiting encryption strategy that can return different information by changing the observation frequency.
研究领域:
材料科学
·
光学材料
·
防伪技术
·
光子学
·
固态化学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·Vol. 50
·期 21
·43373-43382
·
IF 5.1
Xin Yi,Hui Liu,Yihuan Wang,Junjie Chen,Zhanglin Chen,Yuzhen Wang,Xuanyi Yuan,Kaiming Zhu
Photo-stimulated luminescent materials are one of the most attractive alternatives for next-generation optical information storage technologies. However, there are still some challenges in regulating appropriate energy levels of traps in luminescent materials for optical information storage. Herein, a green emission nanophosphor Zn 2 SiO 4 : Mn 2+ , Cr 3+ with the trap depth of 1.05 eV, fulfilling the requirements for optical information storage, was fabricated for the first time through the solution combustion method and subsequent heat treatment at 1000 °C for 2 h. The crystal structure, micromorphology , photoluminescence (PL), photoluminescence excitation (PLE), and afterglow properties of Zn 2 SiO 4 : Mn 2+ , Cr 3+ were studied systematically. By applying the strategy of trap depth engineering, high trap density with proper trap depth was observed when Cr 3+ ions were introduced into Zn 2 SiO 4 : Mn 2+ . Thermoluminescence (TL) glow-curve analysis through the initial rise (IR) method was conducted to gain some insights into the information of traps. As proof of application, optical information storage was experimentally achieved by choosing 275 nm illumination for “information writing” and 980 nm NIR excitation for “information reading”. The results indicate that Zn 2 SiO 4 : Mn 2+ , Cr 3+ phosphor holds promise for potential applications in the field of optical information storage.
研究领域:
材料科学
·
光存储
·
发光材料
·
纳米技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）