SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Xiaojing Chen,Quan Tao,Siwei Yang,Hang Wang,Xuelian Wang,Guqiao Ding,Xiumin Gao,Hui Dong,Liangliang Rong
Aging allows the occurrence and progression of cerebrovascular diseases, highlighting the importance of detecting senescent cells and tissues in the nervous system. Detecting senescent cells/tissues using nanoparticles as probes in the nervous system is desired with high sensitivity, high accuracy, and penetration of the blood-brain barrier. In response, we designed crown ether-based graphene quantum dots with fast proton transport channels to sense potassium ions, a significant differential indicator between healthy and senescent cells. Using the probe, we have achieved MRI-fluorescence dual-functional monitoring of potassium ion concentration in cells via fluorescent intensity and magnetic relaxation time. Importantly, we have further demonstrated the advantages of the crown ether-based graphene quantum dots in penetrating the blood-brain barrier, revealing their potential for diagnosing aging in the nervous system.
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Yujing Liu,Qi Liu,Chengyao Zhao,Liping Liu,Zhongqiu Liu,Anguo Ying,Zhibin Pang,Xuping Sun,Pu Chen,Guang Chen
Owing to the adverse influences of irreversible oxidation, the development of MXene-based materials, especially those with satisfactory performance and longevity for aqueous energy storage, continues to suffer severe challenges. Herein, the strategy of targeted passivation-supported defect-lock-oxygen is conceived, whereby engineered the V 2 CT x material for controllable partial oxidation with enhanced regioselectivity. When the material works, inside the intrinsic defects, the outward diffusion of oxidation is confined by the Lewis bases around the defects, which allows for the controllable progress of oxidation. The defect-locked oxygen oxidizes the exposed carbon, thus forming sufficient amorphous carbons for enhancing the capacitive-type adsorption of K-ions. Then the oxidized defects enabled the fast kinetics via the cross-layer transport of K-ions. Benefiting from the strategy, the electrode assembly V 2 CT x -RTIL (V 2 CT x equipped with room temperature ionic liquid) exhibits high capacity, good rate capability, and ultra-longevity compared with those of the MXene materials so far reported. This work presents the first strategy of targeted passivation-supported defect-lock-oxygen for high-rate capability and super long-cycling aqueous K + storage and hopefully would provide the inspiration for the future design of novel electrodes.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2011
·
IF 2.089
Xia Gui,ZhiGang Tang,Weiyang Fei
The constant-volume method is used to determine the solubility of CO2 in methanol, ethanol, n-propanol, n-butanol, n-propanol, ethylene glycol, propylene glycol, acetone, 2-butanone, ethylene glycol monomethyl ether, and ethylene glycol monoethyl ether under the pressure of 6 MPa and the temperature variations from (288.15 to 318.15) K in this paper. It is found by contrast that ketones have a greater ability to dissolve CO2 than alcohols, ethers, and glycols, which also indicate that both the carbonyl group and the ether bond in solvents can promote the CO2 absorption, but hydroxyl group will inhibit the CO2 absorption.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Gang Xing,Xuan Liu,Yazhen Jia,Jialin Wu,Liming Chai,Wenjie Zhai,Zhaojun Wu,Jing Kong,Jianbin Zhang
Synthesis of catalysts with high catalytic degradation activity for formaldehyde (HCHO) at room temperature is highly desirable for indoor air quality control. Herein, a novel K-Mn 3 O 4 @CeO 2 catalyst with excellent catalytic oxidation activity toward HCHO at near room temperature was reported. In particular, the K addition in K-Mn 3 O 4 @CeO 2 considerably enhanced the oxidation activity, and importantly, 99.3 % conversion of 10 mL of a 40 mg/L HCHO solution at 30 °C for 14 h was achieved, with simultaneous strong cycling stability. Moreover, the addition of K species considerably influenced the chemical valence state of Mn from +4 ( ε -MnO 2 ) to +8/3 (Mn 3 O 4 ) on the surface of CeO 2 , which obviously changed the tunnel structure and the number of oxygen vacancies. One part of K species is uniformly dispersed on K-Mn 3 O 4 @CeO 2 , and the other part exists in the tunnel structure of Mn 3 O 4 @CeO 2 , which is mainly used to balance the negative charge of the tunnel and prevent collapse of the structure, providing enough active sites for the catalytic oxidation of HCHO. We observed a phase transition from tunneled KMnO 2 to Mn 3 O 4 to tunneled MnO 2 with the decreasing K + content, in which K-Mn 3 O 4 @CeO 2 exhibited higher HCHO oxidation activity. In addition, K-Mn 3 O 4 @CeO 2 exhibited lower oxygen vacancy formation and HCHO adsorption energies in aqueous solution based on density functional theory calculations. This is because the K species provide more active oxygen species and richer oxygen vacancies on the surface of K-Mn 3 O 4 @CeO 2 , promote the mobility of lattice oxygen and the room-temperature reduction properties of oxygen species, and enhance the ability of the catalyst to replenish the consumed oxygen species. Finally, a possible HCHO catalytic oxidation pathway on the surface of K-Mn 3 O 4 @CeO 2 catalyst is proposed.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2024
·
IF 2
Jie Li,Huan Zhou,Jie Yang,Cunbing Xu,Sifan Wang,Yifan Li,Jiangbo Chen
The solid–liquid phase equilibria of the Li+, Na+, Ca2+//Cl––H2O quaternary system at 298.15 and 323.15 K are studied via the isothermal solubility phase equilibrium method. The solubility data and liquid properties of density and pH are obtained. The phase diagrams of the quaternary systems, including the water free diagram, the water diagram, and the dry salt diagram, are plotted to show the phase regions, water content, and salting-in effect. NaCl occupies the largest phase region at both 298.15 and 323.15 K. One double salt LiCl·CaCl2·5H2O occurs at 298.15 K and builds up two invariant points; one incommensurate invariant point saturated by (NaCl, LiCl·H2O, LiCl·CaCl2·5H2O) and one commensurate invariant point saturated by (NaCl, CaCl2·4H2O, LiCl·CaCl2·5H2O), but at 323.15 K, no double salt forms. The salting-in effect that happened in ternary systems still occurs in the quaternary Li+, Na+, Ca2+// Cl––H2O system at both temperatures. NaCl saturated concentration increases with LiCl and CaCl2 contents and results in a very high total salt content at commensurate invariant points, e.g., they are 56.92 and 60.62% at 298.15 and 323.15 K, respectively.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Cleaner Production
·
2025
·
IF 10
Jian Gao,Yu Zhou,Bingran Wang,Wenxuan Luo,Peng Wu,Kai Shen,Yaping Zhang
Catalytic hydrolysis technology is a promising solution for carbonyl sulfide (COS) treatment, but it is still difficult to scale up due to the poor selectivity of H 2 S and low stability of the catalyst. Developing an efficient catalyst, therefore, remains a significant challenge. Although perovskite-based catalysts are widely utilized in various applications, they are less commonly applied to carbonyl sulfide hydrolysis. Moreover, the effects of doping modification and the hydrolysis reaction mechanism remain to be fully elucidated. Through extensive testing and evaluation of various lanthanide perovskite materials, LaAlO 3 has demonstrated excellent catalytic hydrolysis performance. At 100 °C, LaAlO 3 exhibits a COS removal efficiency of 37 % and an H 2 S selectivity of 52 %. After modification via potassium doping at the A-site, the catalyst achieves near-complete conversion of COS to H 2 S and maintains stable operation for extended periods under high space velocity. The adsorption energies of various adsorption sites were calculated using DFT, confirming the optimal adsorption sites for reactants COS and H 2 O. Water undergoes dissociative adsorption on the catalyst to form -OH groups, which then adsorb COS through the Eley-Rideal (E-R) mechanism, leading to the formation of the hydrolysis intermediate HSCO 2 − . Reactive oxygen species, on the other hand, facilitate the dissociative adsorption of H 2 O, leading to the formation of more surface hydroxyl groups. Meanwhile, calculations indicate that K doping significantly enhances the adsorption energy of the reactants. The structure and properties of the catalysts have been characterized using a variety of techniques. The results have shown that K doping increases the content of weak basic sites and O 2 − in LaAlO 3 . Consequently, the catalytic activity of La 0.8 K 0.2 AlO 3 prepared by the sol-gel method is enhanced, showing higher selectivity and stability. This work provides new solutions and insights for the application of perovskites in the field of environmental catalysis. Owing to its simple preparation method, low cost, and high efficiency, the modified LaAlO 3 catalyst exhibits excellent environmental and economic benefits.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2025
·
IF 2.1
Hongyu Qi,Jiaxin Han,Lin Xing,Jia Xu,Yushan Liu,Xun Wang,Tao Zhang,Yong Ma,Lingzong Meng
The phase equilibrium of the quinary system LiCl–Li2SO4–LiBO2–Li2B4O7–H2O at 323.15 K was studied with an isothermal dissolution method. The dry-salt phase diagram of the quinary system consists of one invariant point saturated with LiCl·H2O, Li2B4O7·3H2O, and LiBO2·2H2O, three univariant curves, and three crystallization regions saturated with Li2SO4·H2O corresponding to LiCl·H2O, Li2B4O7·3H2O, and LiBO2·2H2O. The J(H2O), J(Li2SO4), refractive index, and pH value change gradually with the changing concentration. Combining the equilibrium constants for boron-containing species, the pH values, and concentration of total boron, the boron-containing species distributions in the mixed solution in the system were calculated. The concentrations of B3O3(OH)52– and B5O6(OH)4– are very low and can be neglected. The boron-containing species distributions are mainly affected by m(LiCl) in the solution but less by m(Li2SO4). The results of the phase diagram and boron-containing species distribution in the quinary system can provide fundamental thermodynamic data for the extraction of lithium borate from brines.
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Dongsheng Jiang,Yuzhe Li,Chao Zhang,Ruifang Wang,Jinpeng Zhu,Wen Chen,Yusi Che,Jilin He
Bayan Obo tailings are rich in niobium and other valuable elements; however, the phase evolution of niobium-bearing slag within these tailings remains poorly understood. This knowledge gap significantly impedes comprehensive utilization of these strategic resources. In this study, a CaO-SiO 2 -Nb 2 O 5 -5%Na 2 O-5%Al 2 O 3 -3%CaF 2 slag system was investigated to examine the phase equilibrium types, compositional characteristics, and distributional evolution under varying w (CaO)/ w (SiO 2 ) ratios and w (Nb 2 O 5 ) contents, using high-temperature equilibrium experiments. Following a 24-hour high-temperature equilibrium treatment at 1473 K under an argon atmosphere, a range of compounds including 13CaO·8SiO 2 ·Nb 2 O 5 ·CaF 2 , 2CaO·4SiO 2 ·Na 2 O·Al 2 O 3 , CaO·Nb 2 O 5 ·NaF, 2CaO·Nb 2 O 5 , and CaO·SiO 2 were identified. An increase in Nb 2 O 5 content coupled with a reduction in the w (CaO)/ w (SiO 2 ) ratio favored the formation of CaO·Nb 2 O 5 ·NaF (pyrochlore phase) and 2CaO·Nb 2 O 5 . These two phases exhibited high Nb concentrations, with the CaO·Nb 2 O 5 ·NaF (pyrochlore) phase containing up to approximately 70% Nb. The optimal smelting conditions for niobium enrichment in the pyrochlore phase were identified within the range of w (CaO)/ w (SiO 2 ) = 0.74∼0.80 and w (Nb 2 O 5 ) = 13.61%∼16.11%.
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Zhilun Zhang,Wei Xie,Xuanru Ren,Bingqing Zhao,Ziqi Zhao,Qian Wang,Mingliang Li,Hailong Wang
To enhance oxidation resistance of carbon/carbon (C/C) composite materials at 1973 K in static air, a novel bilayer Yb 2 O 3 -HfB 2 -SiC/SiC (denoted YHSS) coatings were engineered via a two-step process combining pack cementation and slurry method. A substantial loading of ceramic phases (∼60 wt %) was incorporated into the SiC ceramic layer to improve thermal stability of the oxide scale at 1973 K. Following pre-oxidation, the YHSS coatings impart effective oxidation protection to C/C composite materials for over 228 h at 1973 K. Coupled experimental and theoretical analyses confirm that Yb and Hf atoms diffuse into the thermally grown SiO 2 layer, thereby reinforcing the SiO 2 network structure. Furthermore, the coating's exceptional performance is attributed to its dense, flaw-free surface morphology and the homogeneous dispersion of high-content ceramic phases throughout the SiC layer, collectively suppressing oxygen permeation.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE ENERGY INSTITUTE
·
2025
·
IF 6.2
Wang Lu,Mingwei Xia,Ziyue Tang,Yingquan Chen,Xianhua Wang,Haiping Yang,Hanping Chen
Poly-generation of porous char and H 2 -rich syngas is a key technology for the full and high-value use of carbon and hydrogen elements in biomass. In this study, the synergistic evolution and regulation mechanisms of H 2 and porous carbon during K-assisted bamboo gasification were investigated using fixed-bed pyrolysis-gasification system. The results show that, due to steam activation, both the H 2 production rate and the physicochemical properties of char initially increase and then decline with prolonged gasification time, reaching their peak in the middle stage of the process. The hydrogen conversion rate further indicates that partial gasification achieves higher production efficiency, which is favorable for the poly-generation. K accelerates the evolution of both char and H 2 , enhancing their quality and ultimately enabling the poly-generation of 31.5 mmol/g H 2 and porous carbon with a S BET of 1917 m 2 /g. Moreover, K promotes oxygen enrichment in char, particularly the incorporation of O=C-OR and C=O groups on the char surface, thereby improving the functional applicability of the carbon.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2025
·
IF 2.1
He Ma,Houchun Yan,Menghao Du,Yingmin Yu,Qingsong Li
To separate methyl 2-hydroxyisobutyrate from an aqueous solution, alkyl alcohols were selected as extractants. The liquid–liquid equilibrium data for the system {water + methyl 2-hydroxyisobutyrate + extractants (1-hexanol, 1-heptanol, 1-octanol, and 1-nonanol)} were determined at a temperature of 303.2 K. The partition coefficients and separation factors were calculated to assess the effectiveness of the extraction process. Additionally, the data were correlated using the NRTL and UNIQUAC models, with parameter regression conducted accordingly. The GMcal_TieLinesLL tool was utilized to evaluate the regression model parameters, and the results conformed to the Gibbs stability criterion. The present study further investigates the separation mechanism through analyses of σ-profile, deformation charge density, interaction energies, and Reduced Density Gradient (RDG) analysis. Ultimately, it was concluded that 1-nonanol exhibited the most effective extraction performance.
✓ 已验证
产品关联
DOI
高影响因子
Cell Death & Disease
·
2025
·Vol. 16
·期 1
·1-15
·
IF 9.6
Dai Xiaochan,Yang Xi,Feng Yifan,Wu Xinyuan,Ju Yahan,Zou Rong,Yuan Fei
Age-related macular degeneration (AMD) is the leading cause of irreversible vision loss in people over the age of 55. AMD currently affects approximately 8% of the world’s population, and the number is growing as the global population ages. Growing evidence suggests that pathological choroidal neovascularization (CNV) is often related to more severe and rapid vision loss and blindness associated with AMD. The typical clinical treatment is intravitreal injection of anti-vascular endothelial growth factor (anti-VEGF) agents. However, some patients do not respond well to this therapy, and the potential risks of long-term repeated injections cannot be ignored. Therefore, there is an urgent need to explore the specific mechanisms of CNV development and find new, safe, and effective treatments. In this study, our data indicate that ferroptotic damage of retinal pigment epithelium (RPE) and its induced VEGFA overexpression are critical promoting factors in the development of CNV. Vitamin K can mediate the protection of RPE cells from ferroptotic damage and regulate the expression of eIF2α-ATF4-VEGFA in a VKOR/FSP1-dependent manner, inhibiting new angiogenesis to alleviate CNV. On the contrary, vitamin K antagonists (VKA) represented by warfarin, can promote RPE ferroptotic damage and related vascular proliferation in mice and eventually aggravate CNV lesions. However, vitamin K still showed significant protective effects even in the presence of VKA. Due to its significant anti-ferroptosis and anti-neovascular effects, as well as its relative safety and convenience of use, vitamin K has excellent potential in the treatment of CNV and is expected to become a clinically effective and safe new CNV treatment strategy.
✓ 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）