PROGRESS IN SOLID STATE CHEMISTRY
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2026
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IF 9.7
Yutong Wang,Hang Zhao,Jiayin Niu,Anurak Weahayee,Wanwisa Limphirat,Theeranun Siritanon,Jingyi Ren,Peng Jiang,Yanfei Sun,Tingting Lu
The development of high-performance narrowband near-infrared second window (NIR-II) phosphors remains a critical challenge in the fields of advanced bioimaging and optical thermometry. Herein, a series of Mn 5+ -doped ABaPO 4 (A = Li, Na, K) phosphors are synthesized via conventional solid-state method, and the effect of A-site alkali metal cations on their crystal structure and luminescence properties is comparatively investigated. Mn K -edge X-ray absorption near-edge structure (XANES) spectroscopy unambiguously confirms that Mn ions are predominantly stabilized in the +5 oxidation state and exclusively occupy tetrahedral [PO 4 ] sites in all three hosts. All samples exhibit characteristic narrowband NIR-II emission in the 1160-1200 nm range originating from the 1 E → 3 A 2 spin-forbidden transition of Mn 5+ . The lattice distortion induced by different A-site cations significantly modulates the doping limit, crystal field strength, thermal stability and temperature sensing performance of Mn 5+ ions. All three Mn 5+ -doped hosts exhibit good thermal stability. The fluorescence decay lifetime of LiBaPO 4 : Mn 5+ reaches 772.436 μs NaBaPO 4 : Mn 5+ shows unique energy level splitting and achieves a maximum relative temperature sensitivity of 2.43% K −1 based on the fluorescence intensity ratio technique. KBaPO 4 : Mn 5+ possesses a highly symmetric crystal lattice and a higher doping limit, with a thermal quenching activation energy ( ΔE ) of 0.414 eV. This work not only provides three promising NIR-II phosphors for bioimaging and optical thermometry, but also offers new insights into the research of Mn 5+ -activated phosphate systems.
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ACS Applied Materials & Interfaces
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2026
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IF 7.8
Linqing Wang,Huahui Zhao,Jun Li,Siyu Wang,Shi Zhou,Xiaoyi Chen,Jiali Liu,Li Yang,Hong Liu,Xianyou Wang
All-solid-state fluoride-ion batteries (ASSFIBs) integrate high theoretical energy density, high safety characteristics, and low manufacturing costs, making them a promising candidate for next-generation energy storage technologies. However, the intrinsic shortcomings of high-performance fluoride-ion solid electrolytes severely limit their practical application. Herein, a potassium/strontium dual-doping strategy is designed to synthesize the fluoride-ion conductor β-Pb0.88Sr0.08K0.04F1.96 with a fluorite structure via a straightforward solid-state reaction method. It has been found that KF doping can introduce abundant fluorine vacancy defects to effectively enhance vacancy concentration, while SrF2 and PbF2 can form a continuous solid solution that not only disperses fluorine vacancies generated by K+ doping and suppresses defect aggregation to significantly enhance phase stability, but also induces moderate lattice distortion through the incorporated Sr2+. Through reconfiguration of the local coordination environment of F–, the electrostatic interaction between F– and Pb2+ can be weakened, thereby reducing the ionic migration energy barrier. Owing to the higher vacancy concentration and lower migration barrier, the as-prepared material exhibits a high ionic conductivity of 4.77 × 10–4 S·cm–1 at room temperature, exceeding most reported fluoride ion conductors. ASSFIBs assembled with the fluoride ion conductor as the solid electrolyte present a discharge specific capacity of approximately 132.5 mAh·g–1 over 400 cycles and a capacity retention rate of 97.4%. Therefore, this work offers unique insights into the rational design of PbF2-based solid electrolytes featuring both high ionic conductivity and exceptional phase stability.
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JOURNAL OF SOLUTION CHEMISTRY
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2026
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IF 1.3
Nie Guoliang,Cui Ruizhi,Ren Hongbao,Sang Shihua,Yang Qiuye,Li Wu
The underground brines in Sichuan Basin contain abundant major elements (e.g., Na, K, Mg, Ca, Cl) and high-value trace elements such as Li, Sr and Br, representing significant exploitable resources. Comprehensive investigation of their physicochemical properties is crucial for integrated resource development. This study systematically examined the phase equilibrium behavior of the quinary system NaBr–KBr–CaBr 2 –SrBr 2 –H 2 O and its quaternary subsystem NaBr–CaBr 2 –SrBr 2 –H 2 O at 298.15 K using the isothermal dissolution equilibrium method. The ionic compositions of saturated solutions and corresponding equilibrium solid phases were experimentally determined, enabling construction of complete solid–liquid equilibrium phase diagrams at 298.15 K. Thermodynamic modeling was performed using the Pitzer model with ion-interaction parameters obtained from the literature. Results demonstrate agreement between predicted and experimental solubility values, with close correspondence between calculated and experimental phase boundaries, confirming the model’s applicability. This work provides the first fundamental phase equilibrium dataset for K/Ca/Sr/Br-containing poly-component systems of Sichuan Basin brines.
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MATERIALS CHARACTERIZATION
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2026
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IF 6.2
Yuexing Chen,Xiang Ji,Chengshan Ji,Zhichao Shang,Tianyu Liu,Xuanru Ren,Jiaqi Zhu
In situ SiO 2 shells pre-establish oxygen-barrier networks in ZrB 2 -SiC coatings. • Core-shell ZrB 2 @SiO 2 improves interfacial continuity and particle packing. • Pre-positioned SiO 2 accelerates early-stage oxygen-barrier formation. • ZrO 2 and ZrSiO 4 dispersoids stabilize the borosilicate glass matrix. • ZrB 2 @SiO 2 -SiC lowers mass gain by 69% and gives 99.82% protection. Conventional ZrB 2 -based coatings rely on amorphous phases generated during oxidation to seal coating defects, which delays the establishment of an effective oxygen barrier. Here, an amorphous SiO 2 shell was constructed in situ on ZrB 2 particles through a sol-gel process, and the resulting core-shell powders were combined with SiC to prepare ZrB 2 @SiO 2 -SiC coatings. SiO 2 -free ZrB 2 -SiC and mechanically mixed ZrB 2 -SiO 2 -SiC were used as reference systems to distinguish the effect of SiO 2 incorporation from that of the core-shell configuration. Compared with the mechanically mixed system, the shell-derived phase became interconnected along ZrB 2 particle boundaries during sintering, improving interfacial continuity and suppressing particle agglomeration. During oxidation, this pre-connected SiO 2 phase combined with B 2 O 3 and SiO 2 generated by the oxidation of ZrB 2 and SiC, respectively, to promote the rapid formation and subsequent replenishment of a borosilicate glass network, while dispersed ZrO 2 and ZrSiO 4 helped preserve the continuity and structural stability of the resulting oxide scale. At 1973 K, this structure reduced the maximum mass gain to 0.62 × 10 −2 g·cm −2 , about 69% lower than that of the SiO 2 -free ZrB 2 -SiC system, and decreased the initial oxygen permeability by 83.23%, with the protection efficiency ultimately reaching 99.82%. This work provides an interface pre-encapsulation route for constructing continuous oxygen-barrier networks in ultra-high-temperature ceramic coatings.
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Mining Metallurgy & Exploration
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2026
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IF 2.5
Wang Guangdong,Bai Ziyang,Li Maohui,Mao Xishan,Yu Jie,Su Chang,Hu Wenwen,Ma Bo,Sun Wenzhou,Lu Youjun
In response to the limitations of the traditional acid leaching process in terms of environmental impact and safety, this study developed a ternary mixed acid system (hydrochloric acid - oxalic acid - citric acid) without the use of hydrofluoric acid and nitric acid. The influence of three process parameters, namely, the concentration of the mixed acids, the liquid-solid ratio, the acid leaching temperature, and the acid leaching time, on the removal efficiency of impurities such as Fe, Mn, Al, K, and Na in quartz sand was systematically investigated. The experimental results revealed that the optimal acid leaching conditions were a hydrochloric acid concentration of 4.5 mol·L − 1 , an oxalic acid concentration of 0.03 mol·L − 1 , a citric acid concentration of 0.04 mol·L − 1 , a liquid-solid ratio (mass ratio) of 5:1, a constant temperature of 60 ℃, and a holding time of 3 h. Under these conditions, the removal rates of Fe, Mn, and Al reached 89.2%, 71.0%, and 60.1%, respectively. Moreover, K and Na were also removed to a certain extent, with removal rates of 39.6% and 25.5%, respectively. Mechanistic analysis revealed that in the ternary mixed acid system, hydrochloric acid provides an acidic environment, and the combination of oxalic acid and citric acid synergistically promotes the dissolution of impurities through complexation, reducing impurities on the surface of quartz sand, improving the cleanliness, and forming micro-porous structures. Compared with the traditional hydrogen fluoride-nitric acid leaching process, the fluorine-free ternary mixed acid system proposed in this study has a similar or even better removal efficiency for impurities such as Fe and avoids the environmental and safety risks associated with hydrogen fluoride. This system can achieve the simultaneous removal of various impurities in quartz sand under normal pressure and medium-low-temperature conditions, providing a new technical path for the development of quartz sand purification technology for safety and environmental protection.
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Journal of Energy Storage
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2025
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IF 9.8
Yangkai Sun,Yan Ding,Tianchi Shen,He Gong,Shurong Wang
The precise manipulation of the pore structure of carbon electrode materials at the atomic level is crucial for achieving ultra-fast charge and discharge in high-power supercapacitors. In this study, a novel strategy based on a trace amount of potassium ion (K + ) template-mediated liquid-liquid interface activation is developed. Using light bio-oil as the precursor, this method exploits the directional aggregation effect of its oxygen-rich macromolecules on the K + activating agent surface, successfully producing carbon materials with a high specific surface area (2044.4 m 2 /g), large pore volume (1.13 cm 3 /g), and high microporosity (97 %). The optimal carbon material demonstrates excellent electrochemical performance in aqueous supercapacitors: specific capacitances of 234.4 F/g and 434.5 F/g are achieved at 0.1 A/g in 6 M KOH and 0.25 M K 2 SO 4 electrolytes, respectively. Even after a 1000-fold increase in current density, 63.2 % of the initial capacitance is retained, demonstrating exceptional rate capability. Notably, the amount of activator used in this method is reduced by 27 times compared to traditional processes (activator/precursor ratio decreased from 3:1 to 1:9). Furthermore, comprehensive characterization techniques are employed to elucidate the chemical properties of light bio-oil and the pore-forming mechanism through activation with a low ratio of K + templates. The transport properties of different electrolyte ions within the pore structure of the synthesized carbon materials are also revealed. Particularly, the carbon electrode materials demonstrate exceptional cycling stability, maintaining nearly 100 % of their initial specific capacitance after 51,000 charge-discharge cycles at 10 A/g. This innovative liquid-liquid activation strategy, which achieves both high porosity and outstanding electrochemical performance in carbon materials using minimal activating agents, holds significant implications for the valorization of bio-oils.
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Journal of Materials Chemistry A
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2026
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IF 9.5
Rong Jiang,Junyuan Huang,Ruixue Ma,Qian Li,Longjun Dai,Runyu Li,Xingpeng Chen,Yang Ren,Zhu Liu,Xu Chen,Xiaowei Zhou
Antimony trisulfide (Sb2S3) is a highly promising anode material for alkali-metal batteries due to its high theoretical capacity and abundant resources. However, severe volume expansion during charge-discharge and low electrical conductivity restrict its electrochemical performance. In this study, Sb2S3@NC core-shell nanorod with hollow feature (H-Sb2S3@NC) was successfully prepared via high-temperature carbonization and secondary sulfidation of the inorganic-organic Sb2S3@PDA composite precursor. It would induce the volatilization of partial Sb2S3 by controlling temperature during carbonization, concurrently forming the inorganic core-shell nanorod structure and its hollow feature. Compared to Sb2S3@NC without hollow feature, H-Sb2S3@NC exhibits superior cycling and rate performance when as anode for sodium-ion (SIBs) and potassium-ion batteries (PIBs). Specifically, as anode for SIBs, H-Sb2S3@NC retains 517.0 mAh g⁻¹ after 100 cycles at 100 mA g⁻¹ and even delivers 535.5 mAh g⁻¹ at 1000 mA g⁻¹ (Sb2S3@NC: 60.6 mAh g⁻¹ after 100 cycles at 100 mA g⁻¹, 39.7 mAh g⁻¹ at 1000 mA g⁻¹). For PIBs, H-Sb2S3@NC provides 431.1 mAh g⁻¹ after 50 cycles at 100 mA g⁻¹ (Sb2S3@NC: 208.3 mAh g⁻¹ under the same conditions). Ex situ characterizations confirm Sb2S3 undergoes a reversible conversion-alloying reaction during Na⁺/K⁺ storage. The internal voids of H-Sb2S3@NC could effectively buffer volume expansion stress, while N-doping in the NC (nitrogen-doped carbon) layer enhances ion/electron transport. These two factors synergistically ensure electrode structural stability and excellent kinetics. The temperature-controlled microstructure regulation strategy proposed in this study provides an effective approach to addressing the volume expansion problem of Sb2S3-based anodes and optimizing the electrode performance of alkali-metal ion batteries.
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JOURNAL OF RARE EARTHS
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2024
·Vol. 43
·期 3
·543-551
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IF 5.2
Lang Ruan,Zeyun Zhou,Yi Hu,Ruifeng Peng,Xiaoyan Chen,Ming Cheng,Zhi Zhou,Mao Xia
The technology of solid-state lighting has developed for decades in various industries. Phosphor, as an element part, determines the application domain of lighting products. For instance, blue and red-emitting phosphors are required in the process of plant supplementing light, arrow-band emitting phosphors are applied to backlight displays, etc. In this work, a Bi 3+ -activated blue phosphor was obtained in a symmetrical and compact crystal structure of Gd3SbO7 (GSO). Then, the co-doping strategy of alkali metal ions (Li + , Na + , and K + ) was used to optimize the performance. The result shows that the photoluminescence intensity is increased by 2.1 times and 1.3 times respectively by introducing Li + and K + ions. Not only that, it also achieves narrow-band emitting with the full width of half-maximum (FWHM) reaching 42 nm through Na + doping, and its excitation peak position also shifts from 322 to 375 nm, which can be well excited by near-ultraviolet (NUV) light emitting diode (LED) chips (365 nm). Meanwhile, the electroluminescence spectrum of GSO:0.6 mol%Bi 3+ ,3 wt%Na + matches up to 93.39% of the blue part of the absorption spectrum of chlorophyll a . In summary, the Bi 3+ -activated blue phosphor reported in this work can synchronously meet the requirements of plant light replenishment and field emission displays .
研究领域:
材料科学
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光学工程
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固体照明
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光电子学
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农业光生物学
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JOURNAL OF CHEMICAL THERMODYNAMICS
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2020
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IF 2.888
Dan Li,Dehui Xiao,Xiaoman Liu,Juan Zhao,Xinlu Xu,Cheng Wang,Wugang Wang
Densities and viscosities of ternary system (ethylcyclohexane + 1-butanol + ethyl octanoate) and three corresponding binary systems, (1-butanol + ethylcyclohexane), (1-butanol + ethyl octanoate), and (ethylcyclohexane + ethyl octanoate), were determined at 7 temperatures from 293.15 K to 323.15 K. For the ternary system and binary systems, the excess molar volumes ( V m E ) and viscosity deviations (Δ η ) of have been calculated. The V m E and Δ η data were fitted to the Redlich − Kister equations. The V m E values for the investigated systems are all positive, and the Δ η values are negative over the entire composition range. The density and viscosity data of blends and their corresponding excess properties or deviation may provide useful input data for thermodynamic or modelling studies.
研究领域:
化学热力学
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物理化学
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流体相平衡
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溶液化学
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化工基础数据
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ACS Chemical Neuroscience
·
2023
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IF 5
Xiaoyi Shi,Meng Li,Qiming Huang,Liuming Xie,Zhibing Huang
Monacolin K (MK), a polyketo secondary metabolic compound of the mold genus Monascus, can promote the apoptosis of malignant cancer cells, possessing potential antitumor properties. However, its mechanism of action on gliomas remains unclear. Here, we explored and investigated the potential of the monacolin K’s antitumor effect on human glioma U251 cells and its possible molecular mechanism. Results showed that the application of 10 μM monacolin K inhibited the proliferation of U251 cells, with an inhibitory rate of up to 53.4%. Additionally, monacolin K induced the generation of reactive oxygen species and activated mitochondria-mediated pathways, including decreased MMP, activation of caspase3/caspase9, decreased Na+/K+-ATPase and Ca2+-ATPase activities, and disruption of the antioxidant system, resulting in the disruption of intracellular reduction–oxidation homeostasis. Monacolin K also activated MAPK and NF-κB pathways, upregulating P38 activity and downregulating JNK/ERK/P65/IκBα expression, ultimately leading to apoptosis of U251 cells. Importantly, monacolin K was not cytotoxic to normal human cells, hUC-MSCs. We concluded that monacolin K can induce apoptosis in U251 cells by triggering ROS-mediated oxidative damage and regulating MAPKs and NF-κB pathways.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 15
·2210578
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IF 19
Guanghao Li,Suping Ma,Zhuo Li,Yawen Zhang,Yishu Cao,Yi Huang
Fe 3 GeTe 2 provides an ideal system for the study of itinerant ferromagnetism. However, the Curie temperature (Tc) below room temperature limits its further in-depth research and wide applications. Here, the Tc of 224 K for Fe 3 GeTe 2 is greatly increased to 496 K for Fe 3 GeTe 2 /FeTe 2 /Fe 3 Ge by temperature-induced self-decomposition doping, contributing to improve the electromagnetic response for enhancing the absorption strength and bandwidth and boosting application potentials at higher temperatures. Then, to achieve the multispectral compatible strong absorption, room temperature ferromagnetic dielectric graphene@Fe 3 GeTe 2 /FeTe 2 /Fe 3 Ge absorber with 3D porous network structure is prepared by synergistic self-assembly. It has high Tc of 443 K with strong electromagnetic synergistic loss, achieving reflection loss of −61 dB at 12.6 GHz. Moreover, its absorption loss in the terahertz band (0.1–1.6 THz) is 76 dB, and the average loss is greater than 50.4 dB. Furthermore, the absorber is very potential as stealth skin to efficiently reduce satellite RCS with a multi-angle and multi-band manner in the gigahertz and terahertz bands, thus achieving the purpose of stealth. Compared with the reported conventional absorbers, the absorber has a multispectral compatible strong absorption performance covering gigahertz and terahertz bands, thus very promising for electromagnetic protection of electromagnetic communication and space vehicles.
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JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2023
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IF 2.6
Renjie Xu,Jianhong Gu
The experimental solubility of 2-bromo-5-hydroxypyrazine dissolved in 10 mono-solvents (methanol, ethanol, isopropanol, N,N-dimethylformamide (DMF), n-propanol, acetonitrile, acetone, ethylene glycol (EG), propylene glycol (PG), water) and cosolvent mixtures of methanol + water, ethanol + water, isopropanol + water, and DMF + water was determined by the isothermal saturation method between 278.15 and 323.15 K at 101.2 kPa. The largest solubility was observed in DMF + 2-bromo-5-hydroxypyrazine for mono-solvent systems and in DMF + water for mixed solvent systems. The Jouyban–Acree model (J–A), van’t Hoff–Jouyban–Acree model (V–J–A), and Apelblat–Jouyban–Acree model (A–J–A) were utilized to correlate the 2-bromo-5-hydroxypyrazine solubility in mixtures, and the Apelblat model, van’t Hoff model, λh model, and Jouyban model were used to correlate the 2-bromo-5-hydroxypyrazine solubility in 10 mono-solvents. The preferential solvation of 2-bromo-5-hydroxypyrazine in mixed solvents was researched by calculation of δx1,3. This study presents insights into modulating the 2-bromo-5-hydroxypyrazine crystallization process and in understanding equilibrium behaviors in different solvents.
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