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.
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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.
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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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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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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.
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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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JOURNAL OF CHEMICAL THERMODYNAMICS
·
2022
·
IF 3.269
Ziyu Zhuang,Dongdong Li,Yanfei Fan,Dandan Gao,Dewen Zeng
The construction of a comprehensive thermodynamic model for boron-containing salt brine is important. However, the general lack of the solubility of H 3 BO 3 + salt + H 2 O ternary systems makes it difficult to determine model parameters involving boron species. Here, we systematically determined the solubility isotherms of the H 3 BO 3 + CsCl + H 2 O system at T = (273.15, 298.15, 323.15, 348.15 and 363.15) K. There are three solubility branches corresponding to H 3 BO 3(cr) , CsCl (cr) and a novel adduct in the system. The determined composition of the adduct is 2H 3 BO 3 ·3CsCl. Moreover, the single crystal structure of 2H 3 BO 3 ·3CsCl is solved, suggesting that H 3 BO 3 molecules keep it native plane-triangle structure, but the O atoms coordinate to the Cs ion. We modeled these ternary solubility isotherms using the Pitzer-Simonson-Clegg (PSC) model implemented in the ISLEC program. With the help of the model, a complete polythermal phase diagram of the system was constructed for the temperature range from 250 K to 373.15 K. The determined standard thermodynamic quantities of 2H 3 BO 3 ·3CsCl (cr) from the model are Δ f G m Θ = − 3182.26 kJ∙mol −1 , Δ f H m Θ = − 3496.19 kJ∙mol −1 , S m Θ = 485.85 J∙K −1 ∙mol −1 , C p , m Θ = 320 J∙K −1 ∙mol −1 , respectively.
研究领域:
化学
·
物理化学
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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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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.
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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.
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JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2022
·
IF 3.119
Xiao-Feng Guo,Shi-Hua Sang,Chao Ye
The underground brines in the Sichuan basin of China are rich in many valuable components, such as Li+, K+, Sr2+, Br–, and others. In view of comprehensive utilization of the underground brines, the stable solid–liquid equilibria of the quaternary systems LiBr–NaBr–KBr–H2O and LiBr–KBr–SrBr2–H2O at 308.15 K were measured by the isothermal dissolution equilibrium method. The results show that both phase diagrams of the quaternary systems listed above are hydrate-type. Both equilibrium phase diagrams are composed of two invariant points, five univariant curves and four crystallization fields. The equilibrium solid phases in the first quaternary system are LiBr·2H2O, NaBr·2H2O, NaBr, and KBr, respectively, and those in the second quaternary system are LiBr·2H2O, SrBr2·6H2O, SrBr2·2H2O, and KBr. In both phase diagrams, the crystallization field of KBr is the largest, while that of LiBr·2H2O is the smallest. The results indicate that KBr is the easiest to be separated from the saturated solution in the two quaternary systems. Furthermore, the comparison of phase equilibria of the quaternary systems and its ternary subsystems at different temperatures is presented and discussed in detail.
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Nano Energy
·
2021
·
IF 17.881
Shiqi Ding,Xin Dai,Yuxin Tian,Bo Song,Lei Wang,Guicun Li,Shaoxiang Li,Jianfeng Huang,Zhenjiang Li,Alan Meng
Multi-electron reaction as the appealing alternative can offer higher specific capacity, however, it delivers a tendency to collapse the structure causing cycling instability. Herein, K + pre-intercalation strategy is applied to modify VS 4 /N-TG as cathode for MIBs . As opposed to the structural breakdown caused by multi-electron reaction, pre-intercalated K + not only modulate electronic state, making V 2+ present as instead of partial V 4+ achieving multi-electron reaction, but also act as pillar ions for coordinating the interaction of guest-ions with adjacent host ions to strengthen the framework to maintain structural stability, therefore, K 0.20 VS 4 /N-TG delivers high specific capacity of 190 mAh g –1 , and excellent cycling stability with about near 100% capacity retention after 2000 cycles. This finding gives insights into enabling multi-electron transfer reaction while achieving high structural stability via K + pre-intercalation, shed light on designing viable multi-electron reaction in intercalation type cathode without destroying stable structure for high performance magnesium ions batteries.
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