Biomaterials Advances
·
2026
·
IF 6.7
Linfeng Fan,Zhiyuan Dai,Xinna Bai,Xudan Liu,Zhangui Tang,Hao Pan,Yan Zhang,Dou Zhang
KNN nanoparticles act as nucleating agents in PVDF films, promoting β-phase formation and enhancing piezoelectric properties. • The piezoelectric field generated by KNN/PVDF film promotes fibroblast migration. • Elevated TGF-β and VEGF expression accelerates angiogenesis and wound healing. Electrical stimulation that mimics endogenous electric fields represents a promising therapeutic strategy for wound healing. In this study, a lead-free piezoelectric composite film was fabricated by incorporating (K,Na)NbO 3 (KNN) ceramics into a polyvinylidene fluoride (PVDF) matrix via tape casting. The introduction of KNN fillers significantly enhanced the β-phase content and piezoelectric output of PVDF. Under ultrasound irradiation, the resulting KNN/PVDF film effectively promoted fibroblast proliferation and migration in vitro, achieving a 54.84% migration rate within 24 h and upregulating key wound-repair genes, including TGF-β and VEGF. In vivo, the composite film markedly accelerated the healing of full-thickness skin defects in rats, promoted neovascularization, and achieved approximately 95% wound closure by day 9. These results demonstrate that the KNN/PVDF composite film provides an effective wireless platform for biomimetic electrical stimulation in tissue regeneration.
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高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2026
·
IF 16.8
Zengqi Ye,Xin Zhou,Qianshu Xia,Xuanbing Chen,Xiaofeng Lu,Qian Teng,Tianxiang Ren,Xian Tong,Zhaoping Chen,Yuncang Li,Li Zhu,Cuie Wen,Jixing Lin,Jianfeng Ma
Two-step K/Rb ion exchange (IE) enables high exchange depth and high stress levels. • Residual stress originates from volumetric expansion of the amorphous phase. • Mechanical properties of lithium disilicate (LD) are effectively enhanced via IE. • IE induces a transition from brittle to ductile damage mode in 3D-printed LD. • 3D-printed LD veneers after IE show an increased crack-initiation threshold. To improve the mechanical reliability of thin-walled lithium disilicate (LD) veneers, this study developed a strengthening strategy that integrates vat photopolymerization (VP) with a two-step ion-exchange (IE) process. VP was employed to fabricate thin-walled LD structures, eliminating machining-induced damage, while a sequential K⁺/Rb⁺ IE process achieved both sufficient IE depth and compressive stress, overcoming their conventional trade-off. The two-step IE process increased the flexural strength of LD by 52.0% to 448.6 ± 31.5 MPa and improved the fracture toughness by 80.4% to 2.64 ± 0.10 MPa m 1/2 . The significant enhancement in mechanical performance was mainly attributed to a 349% increase in compressive stress (CS), reaching 141.9 ± 4.4 MPa. The atomic force microscope revealed that the ultrahigh CS was attributed to the volumetric expansion of an amorphous phase. Under scratching loads of 100 mN above the brittle-ductile transition threshold (∼70 mN), the coefficient of friction of IE-processed LD increased by nearly 50%, indicating a transition in energy dissipation from brittle crack initiation to localized plastic deformation. Overall, the VP-fabricated LD, after undergoing the two-step IE processing, exhibits markedly enhanced strength and toughness. This improved mechanical performance effectively resists crack initiation and propagation caused by sharp contacts, thereby contributing to the superior long-term reliability of the LD veneers in the oral masticatory environment. Download: Download high-res image (510KB) Download: Download full-size image
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2026
·
IF 19.7
Juan Long,Gui Yang,Yang Wu,Lin Wang,Yawen Xiao,Shiping Zhang,Huachao Che,Juhong Zhan,Xiaoyong Wu,Bin Huang,Fengzhi Jiang,Shaowen Cao,Xuejun Pan
Ultrathin g-C 3 N 5 with Na-K sites, N-vacancies, and –C N was synthesized. • CN-Na-K yields 4739.89 μmol‧g −1 ‧h −1 H 2 O 2 under aeration-free conditions. • –C N and N-vacancies synergistically boost π-electron delocalization. • Na-K dual sites drive both ORR and WOR pathways for H 2 O 2 production. Photocatalytic solar-driven H 2 O 2 synthesis offers a sustainable energy route but is often limited by the need for supplemental oxygen. To overcome barriers, a distinctive ultra-thin g-C 3 N 5 nanosheet with cyano groups (–C N), N-vacancies, and Na-K dual active sites (CN-Na-K) was structured for H 2 O 2 production in natural-oxygen-conditions (aeration-free). The introduction of the –C N function as an electron pump to construct an internal electric field (IEF) promoted charge separation. Simultaneously, N-vacancies broke the structural localization to enhance π-electron delocalization, creating high-speed channels for carrier transport. Crucially, the Na-K dual sites acted as catalytic centers that enabled the water oxidation reaction (WOR) by driving the formation of key intermediates (*O 2 , *OOH, and *OH), where Na + acted as a powerful electron sink, and K + promoted excited-state electrons and stabilized holes. Therefore, the –C N, N-vacancies, and Na-K dual active sites synergistically promoted an enhanced H 2 O 2 production rate of CN-Na-K (1260.03 μmol‧g −1 ‧h −1 in LED lamp and 4739.89 μmol‧g −1 ‧h −1 in Xe lamp) under aeration-free conditions. Besides, characterizations and density functional theory (DFT) calculations confirmed the CN-Na-K system produced H 2 O 2 via a dual-channel pathway for the oxygen reduction (ORR) and WOR. This work provides a systemic design for electronic delocalization and dual active site engineering to achieve efficient aeration-free H 2 O 2 production. Download: Download high-res image (262KB) Download: Download full-size image
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高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2026
·
IF 2.4
Fei Yuan,Tingfeng Wang,Qing Xu,Zhicheng Zong,Shangqing Chen,Yafei Guo,Tianlong Deng
A microcalorimeter TAM IV was used to determine the mixing enthalpies for the four ternary systems of LiBO2 (aq) + LiCl/Li2SO4 (aq) and LiB5O8 (aq) + LiCl/Li2SO4 (aq) at 298.15 K and 101.325 kPa. The mixing enthalpies were measured over an ionic strength range from 0.20 to 2.40 mol·kg–1 with the constant ionic strength fraction at 0.5. The profiles of mixing enthalpies against ion strength for the four systems were revealed. However, LiBO2 (aq) + LiCl (aq) and LiB5O8 (aq) + LiCl/Li2SO4 (aq) are endothermic, and the system LiBO2 (aq) + Li2SO4 (aq) exhibits the opposite result. Similarly, the mixing enthalpies of these four systems increase with the increasing of ionic strength. Compared with Cl–, the existence of SO42– has a greater impact on the stability of the binary system (LiBO2 + H2O), indicating that the interaction between SO42– and B(OH)4– is much greater than that between Cl– and B(OH)4–. Besides, the Pitzer mixed ion-interaction parameters of θL and ΨL were obtained accurately, which is significant to guide the separation of lithium and boron from salt lakes.
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高影响因子
Additive Manufacturing
·
2025
·
IF 11.1
Junli Liu,Shipeng Zhang,Lucen Hao,Bo Wu,Kaiyin Zhao,Chi Sun Poon
Carbon dioxide (CO 2 ) has been increasingly applied to modify the fresh and rheological properties of cement mortars and concrete, enhancing the mortars’ mechanical properties through CO 2 capture. For 3D printing, most research has adopted the 1 K (one-component) printing system for CO 2 -integrated cement mortar prepared by batch mixing. In contrast, limited work has been conducted on mortars subjected to CO 2 flash mixing in the 2 K (two-component) system, where pumped fresh mortar was mixed with continuously injected CO 2 within a timeframe of seconds during secondary mixing. In this paper, we report the development of a novel low-carbon cement mortar mixture consisting of ordinary Portland cement (OPC), ground granulated blast furnace slag (GGBS) and calcium hydroxide (CH) in binders that exhibited instant change in rheological properties and rapid stiffening when subjected to CO 2 flash mixing. The rheological properties of the CO 2 -mixed mortar improved with increasing proportions of GGBS and CH in the mortar mix. In-situ chord length measurements suggested that the improved rheological properties of the mortar after CO 2 flash mixing were related to the rapid growth of fine CaCO 3 crystals, driving subsequent particle flocculation. The instant flocculation was primarily attributed to electrostatic attraction between particles with opposite surface charges in the OPC-GGBS-CH system induced by CO 2 flash mixing.
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高影响因子
Scientific Reports
·
2025
·Vol. 15
·期 1
·1-13
·
IF 3.9
Jeong Ji-Soo,Kim Jeong-Won,Kim Jin-Hwa,Kim Chang-Yeop,Chung Eun-Hye,Boo So-Young,Giorgi Mario,Ko Je-Won,Kim Tae-Won
Korean red ginseng (KRG, Panax ginseng C.A. Meyer) contains ginsenosides, which are metabolized into active metabolites with various pharmacological effects. This study assessed the in vivo exposure and accumulation of ginsenosides following single and repeated administration of KRG and its active ingredient, compound K, in experimental rodents. In Study 1, rats received KRG (2 g/kg) orally as a single dose or for 2, 4, and 8 wks. Repeated administration increased the maximum plasma concentrations (C max ) of ginsenosides Rb1 and Rd compared to a single dose (Rb: 23.9 to 68.3 ng/mL; Rd: 8.5 to 30.8 ng/mL over 8 wks). Compound K was detected at 2.9 and 2.3 ng/mL of C max after 4 and 8 wks of continuous KRG administration, with no significant differences. In Study 2, oral administration of compound K (5 or 10 mg/kg) in rats resulted in accumulation factors of 4 and 7, respectively. Study 3 evaluated the oral bioavailability of compound K in mice (intravenous, 2 mg/kg; oral, 10 mg/kg), estimating it at approximately 12%. Additionally, network pharmacology and molecular docking simulation studies supported the clinical potential of compound K against inflammation-related diseases. These findings suggest that for substances like KRG, which undergo in vivo metabolic conversion after administration, repeated KRG administration alters pharmacokinetic profiles and should be taken into consideration in its application.
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高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2026
·
IF 2.4
Guannan Zhao,Yangzheng Wu,Xinyi Zhong,Yunlu Li,Jianlong Wang,Yucun Liu
Reliable solubility data are needed for solvent selection and process optimization in the synthesis, purification, and nitration of 2,4,6,8,10,12-hexacyclobutyl-2,4,6,8,10,12-hexaazaisowurtzitane (HCBIW), a key precursor of CL-20. In this work, the solid–liquid equilibrium solubility of HCBIW in 12 pure solvents was measured by the gravimetric method at 0.1 MPa from 273.15 to 313.15 K. The solubility increased with temperature in all solvents, with the highest value in chloroform and the lowest in acetonitrile. The data were correlated using the modified Apelblat equation, Yaws model, van’t Hoff equation, and a polynomial empirical equation, all giving satisfactory fits with R2 > 0.99. Hansen solubility parameter analysis indicated that HCBIW is a weakly polar, dispersion-dominated cage compound, with δd = 17.91 (MPa)0.5, δp = 4.59 (MPa)0.5, and δh = 8.38 (MPa)0.5. The HSP distances and Hansen distances rationalized its good compatibility with chloroform and dichloromethane and poor compatibility with acetonitrile and alcohols. KAT-LSER analysis showed that solvent hydrogen-bond basicity suppresses HCBIW dissolution, whereas hydrogen-bond acidity and cohesive energy density promote dissolution. These results support solvent screening and crystallization process design for HCBIW.
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高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2026
·Vol. 71
·期 9
·3749-3760
·
IF 2.4
Zhuang Ziyu,Zhang Manman,Li Dongdong,Gao Dandan,Feng Haitao
The phase equilibria of ternary systems
phenylboronic
acid (C 6 H 5 B(OH) 2 ) + KCl/RbCl/CsCl
+ H 2 O were investigated at 298.15 and 348.15 K using
a direct
isothermal dissolution equilibrium method with mannitol-NaOH titration.
Solid phases were characterized by Schreinemakers’ wet method,
XRD, Raman, IR, and TG-DSC. No new adducts were detected, in contrast
to the stable adduct 2H 3 BO 3 ·3CsCl formed
in the H 3 BO 3 + CsCl + H 2 O system.
All three systems are of the simple eutectic type, with two solubility
branches and one invariant point. C 6 H 5 B(OH) 2 exerts a weak salting-in effect on the chlorides, independent
of temperature. Conversely, the chlorides salt out C 6 H 5 B(OH) 2 following the order CsCl < RbCl < KCl,
an effect that increases with temperature. This pattern differs from
H 3 BO 3 -alkali chloride systems (salting-in) but
resembles H 3 BO 3 -alkaline earth chloride systems
(salting-out). The salting-out is attributed to salt-induced reduction
of water activity, which disrupts the hydration layer of the solute
and promotes its dehydration condensation to triphenyl boroxine. From
a crystallographic viewpoint, the layered structure of H 3 BO 3 provides suitable sites for Cs + , whereas
the three-dimensional network of C 6 H 5 B(OH) 2 does not. This structural insight suggests that the layered
1,4- and 1,3-benzenediboronic acids may form similar adducts with
Cs + , warranting further investigation.
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高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2025
·
IF 2.1
Jingli Sun,Xuqiang Li,Lu Chen,Yujie Zhen,Siyu Zheng,Shaolong Dong,Yingmin Yu
In order to reduce the impact of nitrogen-containing compounds in oil products on the environment, this paper selected n-heptane as the oil product model and pyridine as the nitrogen-containing compound. Four inexpensive extractants (furfuryl alcohol, 1,4-butanediol, N,N-dimethylacetamide, and dimethyl sulfoxide) were selected as the extractants to separate pyridine from the oil model at 303.2 K, and the liquid–liquid equilibrium (LLE) data were measured. The partition coefficients (D) and separation coefficients (S) of the extractants were calculated and used to evaluate the extractants. Based on the LLE data, correlations were performed using NRTL and UNIQUAC models, and the interaction parameters of the corresponding optimization models were obtained. The root-mean-square deviation (RMSD) values of the NRTL and UNIQUAC models were 0.98% and 1.09%, respectively. The GUI-MATLAB tool was selected to evaluate the accuracy of the binary interaction parameter regression by a Gibbs energy topology analysis. To probe the underlying mechanism of the extraction process between the extractants and pyridine, the σ-profile was used to analyze the interaction patterns between the extractants and pyridine. Given their high extraction efficiency, the studied extractants can be considered as potential extractants for extractive denitrification processes.
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高影响因子
Materials Advances
·
2022
·Vol. 3
·期 15
·6171-6178
·
IF 0
Mingsheng Cai,Tianchun Lang,Tao Han,Damir Valiev,Shuangqiang Fang,Houjiang You,Bitao Liu,Ling Du,Zichao Xu,Elena F. Polisadova
Investigating narrow-band green emitting phosphors with high efficiency and good thermal stability is the main goal of the present light-emitting diode (LED) display research. Here, Ba1−xCaxScO2F:0.001Bi3+,0.001K+ (x = 0–0.12) perovskite phosphors, emitting narrow green light excited by a 415 nm chip, were developed using the cation substitution design strategy. The effects of Ca2+ substitution for Ba2+ in the Ba1−xCaxScO2F:0.001Bi3+,0.001K+ crystal structures and photoluminescence properties were investigated. All the phosphors show the cubic perovskite-type structure in the space group Pm3m. The evolution of the cell parameters and the Ba/Ca/K/Bi–O bond lengths were evaluated. The phosphors with the internal quantum efficiency of 77.4% exhibit bright green emission peaking at 510 nm under 415 nm chip excitation. The improvement of luminescence efficiency and thermal stability was discussed in detail in relation to the local structure variation. The cation substitution design strategy mentioned here can become an important approach to realize the spectral modulation through controlling the micro-environment in the lattice for excellent LED backlight displays.
研究领域:
材料科学
·
光学工程
·
无机化学
·
固体物理
·
显示技术
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NEW JOURNAL OF CHEMISTRY
·
2019
·Vol. 43
·期 20
·7839-7845
·
IF 3.069
Kun Chai,Shichao Cheng,Hongyi Li,Bin Dai
A new phosphate fluoride, Rb2CaPO4F, was synthesized from a high temperature solution. Single-crystal X-ray diffraction analysis indicates that Rb2CaPO4F belongs to the Pnma space group of the orthorhombic system. It exhibits an intricate three dimensional (3D) framework that consists of 1D infinite zig-zag [FRb2Ca]∞ chains interlinked by isolated PO4 tetrahedra. The 1D chains are composed of plane-sharing F-centered [FRb4Ca2] octahedra. Meanwhile, we also obtained another phosphate fluoride K2CaPO4F, which is isostructural with Rb2CaPO4F. Moreover, the effect of the cation size on the framework structures of A2CaPO4F (A = K, Rb) and K2BaPO4F is discussed in detail. In addition, the UV-Vis-NIR diffuse reflectance spectra and the infrared spectra were measured to determine their cut-off edge and the anionic group, respectively. The first-principles theoretical studies were also conducted to aid in the understanding of the electronic structures and linear optical properties.
研究领域:
材料科学
·
化学
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高影响因子
Carbon Neutralization
·
2024
·Vol. 3
·期 6
·1131-1139
·
IF 0
Ling Bai,Su Jin,Qian Liu,Wenjuan Xu,Ziquan Li,Zhen-Dong Huang
Searching for low-cost, high-capacity, high-power, high-stability, high-tap-density, and inherently safe materials for developing cheap, safe, and high-performance batteries has always been a research hotspot. Herein, an inherently safe, low-cost, and low-strain KTiOPO 4 (KTOP) submicron single crystals with a uniform thin layer carbon coating are developed using a ball-mill assisted solid-state method. Uniform solid electrolyte interphase, carbon coating, and inherently stable structure synergistically help compact KTOP submicron single crystals achieve an exceptional anodic K-ion storage performance. The carbon-coated KTOP single crystals obtained under the carbonization temperature of 400°C (KTOP-C-400) can deliver an exceptional potassium ion storage performance of 253.3, 224.0, 175.5, and 131.1 mA h g −1 at the current density of 100, 200, 500, and 1000 mA g −1 , respectively, in the electrolyte of 5 M potassium bis(fluorosulfonyl)imide (KFSI) in DIGLYME electrolytes. Even after being cycled at 1000 mA g −1 for 1000 cycles, the capacity was maintained at 182.5 mA h g −1 with a coulombic efficiency of 99.9%.
研究领域:
材料科学
·
储能
·
电化学
·
电池技术
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