JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2018
·
IF 3.794
Dan Liu,Peng Shi,Wei Ren,Yantao Liu,Ming Liu,Yijun Zhang,Qijing Lin,Bian Tian,Zhuangde Jiang,Zuo-Guang Ye
La 1-x Sr x CrO 3 -In 2 O 3 thick film thermocouples were fabricated by screen-printing method for high temperature sensing and the effects of Sr 2+ content were investigated systematically. All La 1-x Sr x CrO 3 thick films showed well crystallization with orthorhombic unit cell. Their average particle sizes showed the tendency of first increase then decrease gradually with the increase of Sr 2+ content, and the maximum of average particle size was 1.76 μm. At the same time, the conductivities were improved with the increase of Sr 2+ content. The thermoelectric properties of La 1-x Sr x CrO 3 depended on the Sr 2+ content and the average Seebeck coefficients had an exponential decay tendency with the increase of Sr 2+ content. For La 1-x Sr x CrO 3 (x = 0.1–0.4)-In 2 O 3 thermocouples, excellent repeatability and stability were observed through multi-cycles and long-time usage testing at high temperature. The La 0.7 Sr 0.3 CrO 3 -In 2 O 3 thick film thermocouple with excellent thermal stability (drift rate: 0.81 °C/h) and reliability makes it become a promising candidate high sensitivity thermal sensor .
研究领域:
材料科学
·
传感器技术
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Jianhua Zu,Jingjie Diao,Gang Han,Wenjuan Xue,Xiaohan Pan,Mingjie Jin,Qing Tang
In this study, a carboxyl-functionalized covalent organic framework (COF) rich in nitrogen (N) and oxygen (O) functional groups was prepared and characterized, which provided a new opportunity for the efficient and rapid treatment of radioactive contamination in nuclear wastewater. The synthesis of the COF (Tp-DTA) was constructed using 1,3,5-triformylphloroglucinol (TFP) and 2,5-diaminoterephthalic acid (DTA), providing a large specific surface area, mesoporous pore, and abundant coordination sites with high adsorption capacity and exceptional affinity for Sr 2+ . Batch adsorption experiments exhibited that Tp-DTA achieved a maximum adsorption capacity of 145.4 mg/g for Sr 2+ in alkaline solutions, reaching adsorption equilibrium within 60 min. Tp-DTA exhibited rapid kinetics for 90 Sr, with the amounts of 90 Sr removed more than 95% within 3 min. In the presence of coexisting ions (Na + , K + , Cs + , Mg 2+ , and Ca 2+ ), Tp-DTA displayed excellent preferential selectivity for Sr 2+ and high removal efficiency. Even in simulated groundwater containing multiple complex ions, Tp-DTA demonstrated a strong affinity for Sr 2+ and showed practical applicability with a nearly 100% removal efficiency for 90 Sr. XPS and FTIR characterizations confirmed that the adsorption mechanism of Sr 2+ involved chelation exchange between the carboxyl groups of Tp-DTA and Sr 2+ in the solution. Furthermore, the desorption efficiency of HCl (>0.01 mol/L) can reach 95% and five cyclic desorption-adsorption experiments demonstrated the reusability of Tp-DTA, endowing the carboxyl-functional COF with great potential in the treatment of 90 Sr-contaminated radioactive wastewater and environmental remediation.
研究领域:
环境科学
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材料科学
·
放射化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF RARE EARTHS
·
2021
·
IF 3.712
Jiannan Jia,Mengting He,Jun Wan,Yuting Zhang,Hai Guo,Xianping Fan,Xusheng Qiao,Shiguo Chen
With narrow red photoluminescence (PL) bands, tetravalent Mn 4+ doped phosphors show promising prospect in commercial application to effectively expand color gamut of phosphor converted LED displays. Here, we report a type of Sr 2– z Mg 1+ y Y z Al 22– x O 36 : x Mn 4+ phosphors with regular cage-like micro-spherical morphologies. The micron size spherical precursors were synthesized with a propylene oxide (PO) driven fast sol–gel method. The cage -like spherical morphology is beneficial to efficiently trapping much incident light to enhance the PL of the phosphors. Being calcined at 1300 ° C, Sr 2 MgAl 21.978 O 36 :0.022Mn 4+ only exhibits the internal quantum efficiency (IQE) of 24.91%. With the Mg 2+ -Mn 4+ codoping and Y 3+ /Sr 2+ substituting strategies, to fulfill charge balance and produce John-Teller distortion, IQE of Sr 2– z Mg 1+ y Y z Al 22– x O 36 : x Mn 4+ can be further improved up to 36.45%. The CIE color coordinates of Sr 2– z Mg 1+ y Y z Al 22– x O 36 : x Mn 4+ under near ultraviolet excitation can be stably fixed to (0.723, 0.227) at deep red region. It thus finds a potential application as pc-LED display with much broader color gamut than that of the NTSC standard. Therefore, Sr 2– z Mg 1+ y Y z Al 22– x O 36 : x Mn 4+ micron size spheres can be employed as promising red phosphors for high performance LED displays.
研究领域:
材料科学
·
光学工程
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Xiao-Dong Jian,Biao Lu,Dan-Dan Li,Ying-Bang Yao,Tao Tao,Bo Liang,Xiong-Wei Lin,Jin-Hong Guo,Yi-Jiang Zeng,Sheng-Guo Lu
Barium strontium zirconate titanate ceramics ((BaSr)(ZrTi)O3-BSZT) with Zr4+ ionic contents of 15 and 20 mol % and Sr2+ ionic contents of 15, 20, 25, and 30 mol % were prepared using a solid-state reaction approach. X-ray diffraction and scanning electron microscopy were used to characterize the lattice structure and morphologies of the ceramics. Permittivity and polarization as a function of temperature were characterized using an impedance analyzer and a Tower–Sawyer circuit. The electrocaloric effect was measured directly and calculated using the Maxwell relation (indirectly). The results indicated that the BSZT ceramics change from a normal ferroelectric to a relaxor ferroelectric with increasing Zr4+ ionic content, which can be further modified by the addition of Sr2+ ionic content. The optimized adiabatic temperature change ΔT obtained is 2.43 K in (Ba0.85Sr0.15)(Zr0.15Ti0.75)O3 ceramics, and ΔT >1.6 K over a wide temperature span of 120 °C was obtained.
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Jingxian Yang,Xiaoyan Shu,Fen Luo,Lan Wang,Yucheng Gu,Jianjun Wu,Xirui Lu
The disposal of strontium (Sr) from nuclear reactions has been a great challenge in the nuclear industry. Based on four kinds of occupation methods, a series of SrO-doped Gd 2 Zr 2 O 7 compositions with the general formula Gd 2-2 x /3 Sr x Zr 2 O 7 , Gd 2 Zr 2- x /2 Sr x O 7 , Gd 2- x Sr x Zr 2 O 7- x /2 and Gd 2 Zr 2- x Sr x O 7- x (0.0 ≤ x ≤ 2.0) were prepared by a high temperature sintering method solid state route. The influences of Sr substitution on the structure modifications, solid nuclear mobility, microstructure, and element distribution were studied. Our results show that the four sets of samples reach the maximum solid solubility within the range of x > 2.0, 1.5 < x ≤ 2.0, 1.0 < x ≤ 1.5, 1.0 < x ≤ 1.5, respectively. It was found out that the compound phase of SrZrO 3 and pyrochlore appeared in all the samples. In addition, the amount of the SrZrO 3 increases while the amount of the pyrochlore decrease and that of Sr 2+ increases.
研究领域:
材料科学
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核废料管理
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陶瓷
·
固态化学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2026
·Vol. 37
·期 24
·1923
·
IF 3.2
Ma Teng,Zhang Zhikun,Zhang Junjie,Li Shuaijie,Liu Renfei,Luo Fangchun,Zhang Lili,Xu Zhen,Guo Fuqiang,Zhang Baohua
To suppress capacity degradation of Ni-rich LiNi 0.83 Co 0.11 Mn 0.06 O 2 (NCM) cathodes with radially oriented primary grains, a strategy for homogeneous Sr 2+ doping was developed by controlling the Sr 2+ diffusion path from the surface into the bulk. Introducing SrO during sintering enabled Sr 2+ to penetrate along the radially aligned primary grains, achieving uniform distribution throughout the material. The NCM-Sr cathode with 0.7% Sr 2+ exhibited superior rate performance, delivering specific capacities of 182.5, 172.3, and 165.7 mAh g −1 at 1C, 5C, and 10C, respectively, compared with 167.3, 148.1, and 143.2 mAh g −1 for the undoped sample. Uniform Sr 2+ incorporation, facilitated by radial grain alignment, effectively mitigates localized strain accumulation during cycling, enhancing structural stability. For the first time, NCM cathodes were analyzed using deep learning in conjunction with detailed morphological information; the analysis confirmed that controlled particle orientation and uniform small primary particles significantly improve electrochemical performance. These Sr-doped cathodes demonstrate extended cycle life, stable voltage profiles, and excellent high-rate capabilities, highlighting an effective strategy for advancing Ni-rich ternary cathode materials in high-energy lithium-ion batteries.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2018
·Vol. 319
·期 1
·115-121
·
IF 1.181
Chen Shunzhang,Shu Xiaoyan,Luo Fen,Dong Hao,Xu Chen,Li Bingsheng,Shao Dadong,Lu Xirui
To efficiently inhibit the diffusion of radioactive nuclides in soil that were left by nuclear emergency accidents, microwave sintering technology was used in this work to vitrify the simulated strontium contaminated soil. Four kinds of simulated strontium-contaminated soil could be successfully vitrified almost completely within 30 min without any additional components. Sr 2+ cations are immobilized into aluminosilicate glass network structure. In addition, the solubility of SrSO 4 in different soil is related to the element contents of aluminum and silicon. This work reveals a demonstration that beta-radioactive contaminated soil could be treated by microwave vitrifying.
研究领域:
环境科学
·
核技术
✓ 已验证
产品关联
DOI
高影响因子
Advanced Optical Materials
·
2026
·
IF 7.2
Jingyi Liu,Hongling Wang,Wanting Fang,Nuoyi Jia,Ke Su,Xin Pan,Libing Liao,Lefu Mei
Environmentally robust red phosphors that simultaneously withstand thermal, hydrolytic, and mechanical stresses remain scarce, particularly within single-component systems. Here, we demonstrate Sr 2 P 2 O 7 enabled by the intrinsically rigid pyrophosphate framework and Eu 3+ incorporation. The rigid [P 2 O 7 ] 4− framework accommodates Eu 3+ substitution at Sr 2+ sites without secondary phases. Sr 2-x P 2 O 7 :x Eu 3+ exhibits intense 5 D 0 → 7 F 2 emission at 615 nm under 395 nm excitation with a photoluminescence quantum yield of 30.9%. Remarkably, the phosphor retains 56% of its initial emission intensity at 473 K, preserves over 50% emission after 42 days of water immersion, and maintains stable output in flexible PDMS composites after 500 tensile cycles. UV-pumped LED prototypes further demonstrate spectrally stable red emission across a wide current range (20–320 mA). This work establishes pyrophosphate-based lattices as intrinsically robust hosts for red phosphors and positions Sr 2-x P 2 O 7 :x Eu 3+ as a versatile red emitter for multi-scenario optoelectronic applications.
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2026
·
IF 4.4
Qiang Zhang,Zhenghua Qian,Xueyang Liu,Shuai Wang,Yanbo Qiao,Xiaofeng Liu
The sequestration of Sr2+ remains a significant challenge in the treatment of radioactive liquid waste. In this work, we studied the synthesis and characterization of sodium titanate (NTO) and Fe-modified sodium titanate (Fe-NTO) for the removal of Sr2+ from complex aqueous environments. The introduction of Fe species was accompanied by an expanded interlayer spacing of the sodium titanate phase, which may improve Sr2+ accessibility and influence adsorption behavior. Adsorption kinetics and isotherms of Fe-NTO could be described by the pseudo-second-order model and the Langmuir equation, respectively, giving an enhanced capacity of 173.92 mg g–1 as compared to pristine NTO (151.03 mg g–1). In complex solution matrices, Fe-NTO maintained effective Sr2+ uptake in simulated seawater, although the Sr/Ca discrimination was modest. In simulated waste liquid of the thorium molten salt reactor nuclear energy system (TMSR), Fe-NTO exhibited strong Sr2+ adsorption with a high distribution coefficient of 1.47 × 105 mL g–1, while also showing strong uptake of other multivalent ions. Combined Raman, XPS, postadsorption XRD, and ICP-OES analyses support that Sr2+ sequestration involves electrostatic attraction, Na+/Sr2+ ion exchange, and weak interactions with oxygen-containing sites in the titanate structure. These findings demonstrate the potential of Fe-NTO for effective Sr2+ sequestration in complex aqueous matrices, including simulated TMSR-related waste liquid, while underscoring the need for further optimization of ion selectivity in multicomponent systems.
✓ 已验证
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Yu-Jie Zhang,Lin Cheng,Ze-Yu Wang,Ze-Jia Shen,Fei-Fei Wang,Jun-Zheng Wang,Zi-Xin Qiu,Shuaihua Wang,Kai-Yao Wang,Cheng Wang
A porous layered tin sulfide material, [(CH3)2NH2]2Sn3S7·0.4H2O (SnS-1), is developed for rapid Cs+ and Sr2+ removal from aqueous solutions. The alignment of hexagonal windows (8.3 × 8.3 Å2 in cross-section) across the stacked layers forms straight pseudochannels that enables effective ion diffusion and accommodation. SnS-1 exhibits outstanding ion exchange kinetics (k2Cs = 0.256 g mg–1 min–1; k2Sr = 0.272 g mg–1 min–1) and capacities (qmCs = 417.24 mg g–1; qmSr = 116.18 mg g–1), exceeding most chalcogenide-based exchangers. It exhibits acid–base resistance across a broad pH range (0–11) and remarkable selectivity for Cs+ and Sr2+ over various competing ions. Dynamic column filtration confirms the separation applicability of SnS-1, featuring sustained Sr2+ removal (RSr = 94.45–99.51%) against Cs+ (RCs = −20 ± 5%). The SnS-1/PTFE composite membrane can efficiently remove Cs+ and Sr2+ from continuous flow (2.0 mL min–1 cm–2), with removal efficiencies exceeding 91.71 and 98.91%, respectively. Moreover, the adsorbed Cs+ and Sr2+ ions can be readily eluted from the spent column and membrane using a 2 M NaCl solution. Combined with simple synthesis, radiolytic stability, and superior performance, microporous SnS-1 emerges as a promising candidate for nuclear wastewater remediation.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
IONICS
·
2025
·
IF 2.6
Wan ZiYi,Lv JingBo,Zhang YaXin
High-entropy perovskite oxides (HEPOs) have emerged as promising electrode materials for supercapacitors. In this study, we successfully synthesized a series of HEPOs La 1- x Sr x (Co 0.2 Mn 0.2 Fe 0.2 Ni 0.2 Cu 0.2 )O 3 , using the sol–gel method. We thoroughly investigated the impact of Sr doping on the electrochemical properties of HEPO materials. Our findings indicate that the incorporation of a small amount of Sr enhances ionic conductivity and promotes the formation of oxygen vacancies and ionic vacancies within the crystal structure. The incorporation of Sr significantly improves the electrochemical performance of HEPOs materials. La 0.9 Sr 0.1 (Co 0.2 Mn 0.2 Fe 0.2 Ni 0.2 Cu 0.2 )O 3 electrode exhibits a maximum specific capacitance of 204.33 F/g at a scan rate of 2 mV/s, a significant increase compared to the undoped La(Co 0.2 Mn 0.2 Fe 0.2 Ni 0.2 Cu 0.2 )O 3 sample. Furthermore, La 0.9 Sr 0.1 (Co 0.2 Mn 0.2 Fe 0.2 Ni 0.2 Cu 0.2 )O 3 electrode exhibits excellent rate performance, maintaining 74% of its capacity when the current density was increased from 1 to 5 A/g. It also exhibits good cycling stability, with nearly no attenuation after 1000 cycles. Therefore, these results underscore the potential of our synthesized high-entropy perovskite oxides as electrode materials for supercapacitors applications.
研究领域:
材料科学
·
电化学
·
储能技术
✓ 已验证
产品关联
DOI
高影响因子
Membranes
·
2021
·Vol. 12
·期 1
·57
·
IF 4.106
Huan Liu,Quan Li,Benqiao He,Zhengguang Sun,Feng Yan,Zhenyu Cui,Jianxin Li
The efficient separation of Sr2+/Mg2+through nanofiltration (NF) technology is a great challenge because Sr2+and Mg2+ions are congeners with the same valence and chemical properties. In this work, an NF membrane under an electric field (EF) was successfully employed to separate Mg2+and Sr2+ions for the first time. The effects of current densities, Mg2+/Sr2+mass ratios, pH of the feed, and coexisting cations on separation performance were investigated. Dehydration of Sr2+or Mg2+ions under EF was proved by molecular dynamics simulation. The results showed that a high-efficient separation of Mg2+/Sr2+was achieved: Mg2+removal of above 99% and increase in Sr2+permeation with increasing EF. A separation factor reached 928 under optimal conditions, far higher than that without EF. The efficient separation of Mg2+/Sr2+ions was mainly due to rejection of most Mg2+ions by NF membrane and in situ precipitation of partly permeated Mg2+ions by OH−generated on the cathode under EF. Meanwhile, preferential dehydration of Sr2+ions under EF due to lower hydration energy of Sr2+compared with Mg2+resulted in an increase of permeation of Sr2+ions. This work provided a new idea for separation of congener ions with similar valence and chemical properties.Keywords:ENF process;congener ions;dehydration;efficient separation
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）