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.
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产品关联
DOI
PubMed
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.
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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
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DOI
高影响因子
Journal of Materials Chemistry A
·
2013
·Vol. 1
·期 16
·5031-5036
·
IF 0
Chu Liang,Yongfeng Liu,Mingxia Gao,Hongge Pan
In this paper, we report a KOH-doped Mg(NH2)2–2LiH system with low operating temperatures and good cycling stability. The Mg(NH2)2–2LiH–0.07KOH sample can reversibly desorb/absorb ∼4.92 wt% hydrogen with a starting and peak dehydrogenation temperature of ∼75 °C and ∼120 °C, respectively, the lowest in the current Mg(NH2)2–2LiH system studied. Moreover, the cycling stability of de-/hydrogenation is also remarkably improved by KOH doping as the average capacity degradation of the Mg(NH2)2–2LiH–0.07KOH system is of only 0.002 wt% per cycle within 30 cycles. Detailed structural investigations reveal that during ball milling, the doped KOH can react with Mg(NH2)2 and LiH to convert to MgO, KH and Li2K(NH2)3, which work together to provide the synergistic effects of thermodynamics and kinetics on hydrogen desorption and absorption of the Mg(NH2)2–2LiH system upon heating, consequently inducing a significant improvement in hydrogen storage properties.
研究领域:
材料科学
·
氢气储存
·
能源材料
·
固态化学
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DOI
INORGANIC CHEMISTRY
·
2023
·
IF 4.6
Chao Dou,Shengqiang Liu,Fangyi Zhao,Zhen Song,Quanlin Liu
The discovery of violet-excitable blue-emitting phosphor is a significant breakthrough for the development of phosphor-converted full-spectrum white light-emitting diodes (WLEDs). However, the application of most known violet-excitable blue-emitting phosphors is limited by their low external quantum efficiency (EQE). In this work, we reported on how the EQE values of Eu2+-doped Ba(K)-β-Al2O3 blue-emitting phosphor can be significantly improved through lattice site engineering. By partially substituting K+ for Ba2+, the Eu2+-occupied crystallographic site changes and the coordination polyhedron of Eu2+ shrinks, leading to the increase of crystal field splitting. Consequently, the excitation spectrum exhibits a continuous red shift to match the violet excitation, which enhances the PL intensity of solid solution phosphor (Ba0.4K1.6)0.84Al22O35−α:0.32Eu2+ ((B0.4K1.6)0.84AO:Eu) by 1.42 times compared to that of the end-member Ba1.68Al22O35−α:0.32Eu2+ (B1.68AO:Eu) phosphor. Correspondingly, under the 400 nm violet light excitation, the EQE of optimal blue-emitting (B0.4K1.6)0.84AO:Eu phosphor is up to 53%. Additionally, the phosphor also shows excellent resistance to luminescence thermal quenching (95% at 150 °C). Finally, the WLED fabricated based on (B0.4K1.6)0.84AO:Eu and commercial green and red phosphors exhibited an ultra-high color rending index with Ra = 95.5 and R1–R15 >90. This work offers guidance for tuning the spectral properties of phosphors through lattice site engineering.
研究领域:
材料科学
·
光子学
·
固态照明
·
发光材料
·
光电子学
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DOI
高影响因子
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
·
2022
·Vol. 147
·期 17
·9725-9735
·
IF 4.755
Huang Zhen,Gao Na,Liu Ming,Lin Yan,Chang Guozhang,Deng Lisheng,Huang Hongyu
This study uses K-modified copper slag as an oxygen carrier (OC) candidate to examine the characteristics of Chemical Looping Gasification (CLG) of high nitrogen wood waste (HNWW) and investigated the emissions of nitrogenous pollutants (NH 3 /HCN). K modification significantly improves the reactivity of original copper slag because some new species were generated. The calcined copper slag loaded with 10 mass% K (10 K-CS) has relatively higher performance, thus, it was selected as an OC in the CLG of HNWW. The presence of 10 K-CS significantly promotes the conversion of HNWW, especially the char conversion. A suitable HNWW to 10 K-CS mass ratio was determined as 3:7. The OC not only promotes the release of nitrogen (N) in HNWW and oxidizes the reducing nitrogenous-pollutants, thus, the generated NH 3 and HCN content decrease significantly. Compared with HNWW pyrolysis, the NH 3 and HCN content decrease by 78.86% and 46.20%, respectively, at the mass ratio of HNWW to 10 K-CS of 1:10. High temperature promotes the non-gas-phase nitrogen in char/tar to be converted into the nitrogenous pollutants. A long residence time facilitates the oxidization of nitrogenous pollutants. The introduction of steam promotes the release of nitrogenous pollutants, especially NH 3 .
研究领域:
能源工程
·
环境科学
·
化学工程
·
废物资源化技术
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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.
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DOI
高影响因子
JOURNAL OF CHEMICAL THERMODYNAMICS
·
2022
·
IF 3.269
Fei Yuan,Hua Li,Long Li,Shiqiang Wang,Yafei Guo,Tianlong Deng
In this study, densities of the two ternary aqueous solution systems (LiB 5 O 8 + LiCl + H 2 O) and (LiB 5 O 8 + Li 2 SO 4 + H 2 O) were measured using an accurate digital vibrating-tube densimeter from 283.15 to 363.15 K at an interval of 5 K and 101.325 kPa. B 5 O 8 - in aqueous solution was in the form of [B 5 O 6 (OH) 4 ] - . Therefore, the complex aqueous solution of LiB 5 O 8 is in the form of Li[B 5 O 6 (OH) 4 ]. Subsequently, the mean apparent molar volume ( V Φ θ ) and mixing ion-interaction parameters ( θ a , a ′ v and Ψ c , a , a ′ v , c = Li + , a = B 5 O 6 (OH) 4 - , a ′ = Cl - or SO 4 2- ) against temperature were obtained using the Pitzer equation for the first time. And then, the temperature-dependence equations for the Pitzer mixing ion-interaction parameters and the relevant temperature correlation coefficients of the equation a j, i.e. [ f ( a i , T ) = a 1 + a 2 ln( T /298.15) + a 3 ( T − 298.15) + a 4 /(620 − T ) + a 5 /( T − 227)] were also obtained through the least square fitting. These volumetric properties and parameterization Pitzer parameters obtained in this work could hopefully be used for the quantitatively predictive calculation of the physicochemical properties of the mixed electrolytes containing lithium, chloride, and sulfate ions at any temperature.
研究领域:
物理化学
·
热力学
·
溶液化学
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DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2021
·
IF 2.694
Panxi Wu,Lifeng Zhang,Shujun Zhao,Chenchen Wang,Yongsheng Guo,Wenjun Fang
Biofuel may be an important component of aviation fuel for its significant advantages. In the present work, two biofuel samples, methyl laurate and pinane, are selected for blending research with n-dodecane, a typical model fuel of aviation kerosene. Densities and viscosities for the ternary system pinane (1) + n-dodecane (2) + methyl laurate (3) and corresponding binary systems have been measured at the temperatures from 293.15 to 333.15 K and atmospheric pressure. The excess molar volume (VmE) and viscosity deviation (Δη) of binary systems have been calculated based on experimental data and fitted to the Redlich–Kister equation, while those of the ternary system have been fitted to Nagata–Tamura, Redlich–Kister, Cibulka, and Singh semiempirical equations, respectively. The values of the excess molar volume are all positive for all investigated systems, while the viscosity deviations are all negative. The results are discussed from the perspective of intermolecular force and the structure. Furthermore, the densities and viscosities of both binary and ternary mixtures are satisfactorily correlated using the Jouyban–Acree model.
研究领域:
化学工程
·
物理化学
·
能源科学
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Jiajia Ye,Guang Xia,Xuting Li,Zhiqiang Zheng,Zhanghua Fu,Qingshuai Zhang,Cheng Hu
The Ni 2 P anode own high theoretical capacity but still suffer from big volume expansion thus resulting sluggish electrochemical kinetics in K-ion batteries. Herein, we design and synthesize the urchin-like Ni 2 P yolk-shell microspheres encapsulated into N-doped carbon shells (Ni 2 P@N-C) for the first time through one-step hydrothermal followed a phosphidation/carbonization process. The unique urchin-like morphology provides fast charge transfers to the active sites for improved K-ion storage at high current densities. The yolk-shell structure couples with the nitrogen-doping carbon layer to effectively relieve the volume expansions while enhancing the conductivity of the whole anode composite. As a result, Ni 2 P@N-C electrode delivers an ultrahigh capacity of 172.6 mAh g −1 at 2000 mA g −1 after long time of 3000 cycles and shows outstanding rate performance of 136.6 mAh g −1 at 5000 mA g −1 . Lastly, ex situ X-ray diffraction analysis of K + ion insertion/extraction into/from the Ni 2 P@N-C electrode shows that potassium ion storage mechanism was to be Ni 2 P + 3K + +3e - ↔K 3 P + 2Ni.
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米材料
·
电池技术
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DOI
高影响因子
Science China-Chemistry
·
2014
·Vol. 57
·期 5
·662-668
·
IF 1.516
Chai YunFeng,Pan YuanJiang
Protonation and alkali-metal cation adduction are the most important ionization processes in soft-ionization mass spectrometry. Studies on the fragmentation mechanism of protonated and alkali-metal-cationized compounds in tandem mass spectrometry are essential and helpful for structural analysis. In some cases, it was often observed that a compound attached by different alkali-metal cations (or proton) exhibits similar fragmentation patterns but the relative abundances of product ions are different. This difference was considered to derive from the different electrostatic interactions of alkali-metal cations (or the bonded effect of proton) with the analyte. The alkali-metal cation with a smaller ionic radius shows stronger electrostatic interaction with the molecule because of its higher charge density. In addition, the bonded effect of the proton is stronger than the electrostatic interaction of the alkali-metal cation. In the present study, which used McLafferty-type rearrangements of even-electron ions ([M + Cat] + , Cat = H, Li, Na, K) as model reactions, the effect of cation size in mass spectrometric fragmentation reactions is highlighted. These considerations were also successfully applied to interpret the similar but distinct fragmentation behavior of proton and alkali-metal cation adducts of a synthetic compound (2-(acetamido(phenyl)methyl)-3-oxobutanoate) and a drug (entecavir).
研究领域:
分析化学
·
质谱学
·
药物代谢
·
分子结构解析
·
有机质谱
·
电离机制
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Zimeng Pan,Jiachen Wang,Zihao Chen,Zhenyu Wang,Yao Wang,Xiaolu Liang,Haitao Wang,Yiliang Liu,Yufei Du,Jiamei Han,Jiabin Jiang,Xin Gu,Xiang Liu
For uncooled infrared bolometers, the traditional thermal sensing materials such as vanadium oxide and amorphous silicon have a relative low value of temperature coefficient of resistivity ( TCR ). In contrast, perovskite manganese oxide films exhibit 3–5 times higher TCR values than traditional materials. The important challenge is to achieve both high TCR and peak TCR temperatures ( T k ) at room temperature. Herein, La 0.7 Ca 0.3− x K x MnO 3 (LCKMO, 0.22 ≤ x ≤ 0.28) films were fabricated on La 0.3 Sr 0.7 Al 0.65 Ta 0.35 O 3 (00 l ) substrates using a combined sol–gel and spin coating process. It was found that by optimizing the K doping amount at x = 0.24, on the one hand, double exchange mechanism becomes the strongest. On the other hand, with minimal lattice strain, electron scattering is inhibited, and the electron-lattice coupling effect improves. Furthermore, the film exhibits a dense surface structure and a uniform distribution of grains. Finally, TCR value reaches 15.95 % K −1 at the corresponding temperature of 283.28 K. Obviously, the prepared LCKMO films effectively combine the high TCR of La 1− x Ca x MnO 3 with the high T k of La 1− x K x MnO 3 by optimizing the K doping level. The results show that LCKMO films are a promising candidate for fabricating uncooled infrared bolometers.
研究领域:
材料科学
·
凝聚态物理
·
电子器件
·
薄膜技术
·
红外传感
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DOI
高影响因子
危险品化学品经营许可证（带存储）