APPLIED CATALYSIS A-GENERAL
·
2026
·
IF 4.8
Zhi Li,Ying Gao,Qingshan Li,Lan Zhang,Yuanna Sun,Chan Siew Hwa
LaMnO 3 -based perovskites are considered as one of the most promising oxygen reduction reaction (ORR) catalysts to replace noble metals due to their excellent controllability and stability. A central strategy to enhance their electrocatalytic performance involves A-site doping. While divalent cation doping (e.g., Sr 2 + , Ca 2+ ) has been extensively explored, the mechanistic understanding of how lower-valence monovalent cations modulate the electronic structure and enhance ORR activity remains insufficient. This study systematically investigates the effect of monovalent potassium (K⁺) doping in La 1-x K x MnO 3-δ (LKM) as a model system to unravel the underlying enhancement mechanism. Among the series, La 0.8 K 0.2 MnO 3-δ (LKM20) demonstrates improved ORR activity with an onset potential of 0.924 V and a half-wave potential of 0.750 V (vs. RHE). The enhanced activity of LKM20 is attributed to: 1) K-induced tuning of the Mn 4+ /Mn 3+ ratio nearing 1.24; 2) Regulating oxygen vacancy concentration and optimizing intermediate adsorption performance; and 3) Reinforced Mn-O covalent bonding. Density Functional Theory calculations reveal that the introduction of K effectively reduces the energy barrier for the ORR. In the zinc-air battery, LKM20 exhibits a maximum power density of 122.5 mW cm −2 and maintains stable operation over 1800 h during charge-discharge cycles.
✓ 已验证
产品关联
DOI
高影响因子
Plant Nano Biology
·
2026
·
IF 9.1
Jiaqi Dong,Tiantian Yuan,Haiying Qiu,Jiayi Luo,Zeyu Jiang,Yong He,Zhujun Zhu,Guochao Yan
Soil salinization severely restricts plant growth and threatens food safety. Silicon nanoparticles (SiNPs) can alleviate salt stresses, while the mechanisms remain unclear. Aiming for targeted application of SiNPs under soil salinization, silicate (Si) was selected as reference Si source, and the effects of Si and SiNPs on plant growth, photosynthetic performance, antioxidant performance, and ionic homeostasis in cucumber under salt stress were comprehensively investigated with the usage of principal component analysis (PCA) and transcriptome sequencing. In general, salt stress induced significant growth inhibition in cucumber, with decreased biomass and root morphological parameters, while both Si and SiNPs alleviated growth inhibition in cucumber. In addition, Si and SiNPs application at high concentration more effectively enhanced Na/K homeostasis, and low concentration application of Si and SiNPs induced a more significant regulation on antioxidant enzyme activities. In addition, SiNPs induced a more extensive regulation on gene expression network than Si in response to salt stress in cucumber, which was supported by the results of enrichment analysis. Moreover, correlation analysis between key modules of weighted gene co-expression network analysis (WGCNA) and physiological traits implied that genes related to chloroplast functions, redox balance, and membrane transport processes could be the key targets of SiNPs. Overall, the results showed that Si and SiNPs promoted salt stress resistance in cucumber with a dose-dependent pattern. SiNPs application more effectively promoted cucumber biomass and regulated gene expression network than silicate under salt stress, while several key target genes of SiNPs in modulating salt stress in cucumber were also identified. The results would provide a basis of targeted application of SiNPs under soil salinization.
✓ 已验证
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2026
·
IF 2.4
Zhao Lei,Yuhang Chen,Long Cheng,Maogang He,Ying Zhang
n-Dodecane is one of the key components of aviation kerosene. Although thermal conductivity data for n-dodecane is quite abundant, direct measurements of thermal diffusivity remain scarce, particularly in the vicinity of the aviation kerosene critical point. In this work, we measured the thermal diffusivity of n-dodecane using dynamic light scattering method in a temperature range of (290.15–633.15) K along seven isobars at p = (0.1, 1.0, 1.5, 1.8, 2.0 2.5 and 5.0) MPa and analyzed the thermal diffusivity as affected by temperature and pressure. The relative combined uncertainty of the thermal diffusivity experimental system is estimated to be 0.026 at a coverage factor of k = 2 with the level of confidence 0.95. The polynomial correlation of the thermal diffusivity against the temperature and pressure was proposed. The absolute average relative deviation and maximum relative deviation between the calculated results and experimental data are 0.68% and 2.98%, respectively. This study accurately measured the thermal diffusivity over a wide temperature range. It is expected to fill the gap in the existing literature and provide support for the exploration of the near-critical zone phenomenon.
✓ 已验证
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·124074
·
IF 7.5
Xiaoyan Ma,Keyi Xu,Liqin Zhong,Hailong Xu,Qixian Xu,Yali Song,Jing Deng,Stefanos Giannakis
Acesulfame potassium (ACE), an artificial sweetener, is extensively used worldwide and is ubiquitous in aquatic environments in several countries. As an emerging contaminant, ACE may pose a risk to aquatic and water-dependent plant species. This study investigated the physiological and biochemical responses of rice ( Oryza sativa L.) to constant ACE exposure during its key growth stages. The results revealed that ACE exposure had no significant inhibitory effect on the final seed germination rate but significantly impeded early seedling growth, particularly radicle elongation. Biochemical analyses indicated that ACE induced oxidative stress, as evidenced by the altered activities of key antioxidant enzymes and a marked, dose- and time-dependent increase in malondialdehyde (MDA) content, which indicates lipid peroxidation. Specifically, low concentrations of ACE (2.5 μM) enhanced chlorophyll a ( Chla ) synthesis in leaves during specific growth stages, whereas higher concentrations (50 and 100 μM) ultimately inhibited it, leading to the disruption of the photosynthetic apparatus. Furthermore, rice exhibited a significant capacity for ACE uptake and translocation, with accumulation in the following order: roots > stems > leaves. Uptake efficiency increased with plant development and peaked during the booting stage of plant growth. Crucially, sustained exposure led to a progressive decline in soluble protein content, particularly during later growth stages. Collectively, these novel findings demonstrate that ACE imposes substantial physiological stress on rice, primarily through the induction of oxidative damage, disruption of key metabolic pathways, and previously uncharacterized pollutant bioaccumulation and translocation, highlighting the potential risk to rice productivity and underscoring the urgent need for field validation studies.
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2026
·Vol. 31
·期 13
·2397
·
IF 5.1
Hua Li,Zijun Huang,Yifei Hou,Qiyue Liu,Di Li,Wenyue Zhang,Yi Su,Zhide Wang,Zaifa Yang
Against the backdrop of energy conservation and environmental protection, developing more stable and efficient phosphors has become an urgent challenge. In this study, we have synthesized a series of Ca2.5Hf2.5Ga3O12:Eu3+(CHGO:Eu3+) red phosphors via a high-temperature solid-state method, which exhibit strong red emission at 610 nm under 394 nm excitation, corresponding to the5D0→7F2transition of Eu3+. To improve the lattice vacancies caused by charge imbalance when Eu3+is doped into the CHGO lattice to replace Ca2+, we introduce the charge compensator M+(M = Li, Na, K). The results of the emission spectrum show that the introduction of charge compensators can effectively improve the luminescence intensity. Among them, K+has the most significant effect on increasing the emission intensity of Eu3+, making the emission intensity of the phosphor more than twice that when there are no charge compensation ions. Additionally, the quantum efficiency and thermal stability of these phosphors are significantly improved compared to the CHGO:0.075Eu3+sample before substitution. At 423 K, the emission intensity of the CHGO:0.075Eu3+, 0.075K+sample still remains at 88.7% of that at 298 K. The color rendering index of the prepared white LED is 81.2, and its CIE chromaticity coordinates are (0.3212, 0.3065). This indicates that the prepared CHGO:0.075Eu3+, 0.075K+red phosphor has broad application prospects in solid-state lighting.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2026
·
IF 2.4
Dan Li,Shasha Liu,Yuhan Zhuang
Densities and viscosities of ternary mixtures of n-butyl ether + methyl laurate + n-nonane along with their corresponding binary subsystems (n-butyl ether + methyl laurate, n-butyl ether + n-nonane, and methyl laurate + n-nonane) were measured over the entire composition range at T = 293.15–323.15 K and ambient pressure (p = 0.1 MPa). These systems were selected to serve as model mixtures for ternary fuel blends of biodiesel. The excess molar volume (VmE) and viscosity deviation (Δη) of the ternary and binary mixtures were derived from the experimental data. The Redlich–Kister, Cibulka, and Nagata–Tamura equations were used to correlate the ternary VmE and Δη. The Kohler, Jacob–Fitzner, Tsao–Smith, and Toop models were used to calculate the ternary VmE. The results provide fundamental thermodynamic data that are essential for optimizing the formulation and predicting the performance of ether–biodiesel–diesel blends.
✓ 已验证
DOI
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2026
·Vol. 74
·期 30
·23947-23964
·
IF 6.7
Zhou Xinyue,Yu Wenxin,Cui Yanhong,Meng Xiang,Zhang Jian,Jiang Qingxue,Yang Bo,Ma Xiaoran,Ma Lin,Liang Qingwei,Wang Xuemin
Salt stress disrupts photosynthesis, ion homeostasis,
and antioxidant
systems, thereby inhibiting plant growth and reducing the yield and
quality. This study investigated the physiological and molecular mechanisms
of salt stress alleviation by foliar application of different concentrations
of silicon dioxide nanoparticles (SiO 2 NPs) in oats under
150 mM NaCl. Physiological and transcriptomic analyses were performed.
300 ppm of SiO 2 NPs significantly promoted growth and photosynthesis,
enhanced antioxidant enzyme activities, reduced oxidative damage,
and maintained Na + /K + balance while improving
nutritional quality. SiO 2 NPs regulated genes involved
in photosynthesis and carbon metabolism and upregulated the ion transporter
genes HKT1;1 , HKT7 , and HKT9 and ROS signaling genes MPK6 and WRKY33 . HKT proteins were localized to the plasma membrane.
Weighted correlation network analysis (WGCNA) identified six hub genes
associated with the growth and photosynthetic traits. Overall, SiO 2 NPs enhance salt tolerance, yield, and quality in oat by
maintaining Na + /K + homeostasis, activating ROS
signaling, and sustaining photosynthesis and carbon metabolism.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2026
·
IF 2.4
Guoqiang Zhou,Yue Zhang,Xinzhu Liu,Yufei Zhang,Jiaqi Li,Jiacheng Li,Zijie Zhang,Gang Shu,Hualin Fu,Funeng Xu,Juchun Lin,Wei Zhang
Sulbutiamine (SBT) is a vitamin B1 derivative with multiple pharmacological activities. Low water solubility and the lack of systematic solubility studies have hindered the development of its formulations. In this study, the solubility of SBT at temperatures ranging from 278.15 to 318.15 K was measured in 11 monosolvents and one binary solvent (P = 0.1 MPa) by the static method. The findings indicated that SBT exhibited optimal solubility in acetone and isopropanol. And the cosolvency phenomenon was discovered in a binary solvent (acetone + water). It was demonstrated that the solubility of SBT increased in accordance with an increase in temperature. In addition, solubility is analyzed from a variety of perspectives, including hydrogen bonding, polarity, Hansen Solubility parameters and the KAT-LSER. The Apelblat model, the Van’t Hoff model, the Jouyban model, the Generalized Steady-State model (GSM model), the Sun model, and the Apelblat-Jouyban-Acree model were used to fit the solubility values. The disparities between the experimental and calculated values of solubility were determined by means of RMSD, ARD, and RD. Results demonstrated that all employed models achieved satisfactory correlation performance.
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2025
·
IF 7.5
Suhong Lu,Nan Sun,Liwei Gong,Chengyu Xu,Rongrong Guo,Yiyao Li,Shuo Wang,Jurong Liu,Yuzhen Fang,Guilong Liu
Hollow urchin-like Co 3 O 4 -MnO 2 spheres were synthesized via hydrothermal method, followed by co-impregnation with 3 wt% Ag and K (3, 5, 7 wt%). The optimized Ag-5 K/Co 3 O 4 -MnO 2 catalyst achieved complete HCHO conversion at 50 °C under 150 ppm HCHO, 21 vol% O 2 /N 2 , RH = 30 %, and WHSV = 36,000 mL g cat -1 h −1 . Systematic parameter studies (0 ∼ 80 % RH, 50 ∼ 350 ppm HCHO, 5 ∼ 21 vol% O 2 , 36,000 ∼ 144,000 mL g cat -1 h −1 WHSV) demonstrated the robust catalytic performance of Ag-5 K/Co 3 O 4 -MnO 2 across wide operational ranges. Remarkably, Ag-5 K/Co 3 O 4 -MnO 2 demonstrated excellent stability and nearly 100 % HCHO conversion over a continuous period of 100 h with the WHSV of 36,000 mL g cat -1 h −1 . The hollow architecture enhanced reactant diffusion, while interconnected nanorod arrays provided abundant Ag/K anchoring sites. Potassium doping increased Ag/Ag + , (Mn 2+ + Mn 3+ )/Mn 4+ and Co 3+ /Co 2+ ratios via strengthened Ag-support interactions, promoting oxygen activation. Mechanistic analysis indicated HCHO oxidation proceeds via HCHO → DOM → HCOO – + OH – →CO 2 + H 2 O route.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2019
·
IF 7.467
Song Jiang,Yang Li,Yong Qian,Jie Zhou,Tieqiang Li,Ning Lin,Yitai Qian
Graphite, as a typical carbon allotrope , is demonstrated as an available intercalation-type anode material for potassium-ion batteries (PIBs). The main challenges associated with graphite anodes are structural pulverization and instability of the solid electrolyte interphase (SEI) resulting from the repeated volume change during charge/discharge. In this work, a layer of interweaved carbon nanotubes (CNTs) are grown on the surface of micro-size graphite flakes through controllable in-situ catalytic chemical vapor deposition method (CCVD), and the CNTs content can be easily adjusted by varying the deposition time . The CNTs-interweaved layer can not only stabilize the graphite structure but also enhance the diffusion kinetics of K + during cycling. Furthermore, CNTs also provide a certain amount of capacity. The composite material of in situ growing carbon nanotubes and modified graphite flakes (CNTs-MG) exhibit a reversible capacity of 234 mAh g −1 at 2 A g −1 after 1500 cycles, which is obviously better than that of counterpart graphite flakes. Besides, the K storage mechanism and the effect of the contents of CNTs are also investigated systemically by in-situ Raman spectra and electrochemical characterizations.
研究领域:
材料科学
·
储能
·
电化学
·
纳米材料
·
电池技术
✓ 已验证
DOI
高影响因子
CHEMOSPHERE
·
2022
·
IF 8.943
Xueyan Liu,Minshu Cui,Kangping Cui,Yan Ding,Xing Chen,Changbin Chen,Xianbao Nie
As an emerging peroxymonosulfate (PMS) activation catalyst, graphitic carbon nitride (g-C 3 N 4 ) is non-toxic and eco-friendly, while its poor catalytic performance hinders the application of pristine g-C 3 N 4 . Herein, a simple LiCl/KCl molten salts-assisted thermal polymerization method was adopted to promote the photocatalytic performance of g-C 3 N 4 . With the insertion of Li/K dopants and the introduction of surface cyano defects, the modified catalyst exhibited greatly enhanced ability on PMS activation towards acetaminophen removal, observing a 13 times higher rate constant than pristine g-C 3 N 4 (k = 0.0435 min −1 vs. 0.0033 min −1 ). The main reactive oxygen species for pollutant degradation were identified as sulfate radicals and singlet oxygen. The wavefunction analysis at excited states based on density functional theory suggests that the introduction of cyano defects greatly promotes the separation of photo-generated electron-hole pairs, thereby achieving higher photocatalytic efficiency. In addition, the doping of Li/K significantly enhances the interaction between PMS and the catalyst surface, and orients the electron transfer from PMS to catalyst to generate non-radical species singlet oxygen, which improves the catalyst resistance to anions-containing water matrices.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYTICAL CHEMISTRY
·
2022
·
IF 8.008
Mingyue Zhao,Xin Liu,Yuzhu Hou,Tongtong Yang,Jiaquan Xu,Rui Su
The levels of l-arginine and asymmetric dimethylarginine (ADMA) and the amount of the nitric oxide (NO) production have recently been linked to breast cancer and pharmaceutical effect evaluation. Herein, a method combining electrochemistry and high-resolution mass spectrometry (HRMS) was established and used to study NO metabolism and its modulation by ginsenoside compound K (CK) in breast cancer cells. Platinum nanoparticles-decorated fluorine tin oxide was employed as an electrochemical sensor for in situ detection of NO release, while HRMS was used for the analysis of the NO-related metabolites. Through the combination of the electrochemical and HRMS results, decreases in arginine and NO and increases in ADMA and ornithine were observed after modulation by CK, and two highly correlated metabolic pathways including arginine and proline metabolism and vascular smooth muscle contraction were found. This method offers a new strategy for fast evaluation of pharmaceutical efficacy based on NO metabolism.
✓ 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）