Inorganic Chemistry Frontiers
·
2022
·Vol. 9
·期 10
·2182-2193
·
IF 7.779
Peng Liu,Tian Xia,Suofu Nie,Qiaoxia Guo,Chunming Xu,Baojian Shen
Y zeolite is presently used as an important active component in oil refining catalysts. The efficient synthesis of NaY zeolite still faces many huge challenges. Herein, a novel method for the rapid synthesis of nano-plate-like small crystal-sized NaY zeolite through an artificial-fish-reef-breeding negative crystal strategy is reported. It was discovered that cationic polyacrylamide (CPAM) could act as an artificial fish-reef to breed negative crystals, which promoted NaY zeolite nucleation and accelerated the crystallization of NaY zeolite. The crystallization time of NaY zeolite was shortened by 9 h. The relevant crystallization mechanism was investigated. Nano-plate-like (10–50 nm) small-sized (100–200 nm) NaY zeolite crystals with exceptional thermal stability and a large total volume (0.447 cm3 g−1) were synthesized. After steam treatment, the nano-plate-like small-sized USY-CPAM zeolites possessed reasonable acid sites distribution, endowing them with superior cracking activity for heavy reactant molecules.
研究领域:
材料科学
·
催化化学
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DOI
高影响因子
PEST MANAGEMENT SCIENCE
·
2023
·Vol. 79
·期 7
·2527-2538
·
IF 4.1
Jiamiao Jin,Chengli Mou,Juan Zou,Xin Xie,Chen Wang,Tingwei Shen,Youlin Deng,Benpeng Li,Zhichao Jin,Xiangyang Li,Yonggui Robin Chi
BACKGROUND Potato virus Y (PVY) was first discovered by Smith in 1931 and is currently ranked as the fifth most significant plant virus. It can cause severe damage to plants from the family Solanaceae , which results in billions of dollars of economic loss worldwide every year. To discover new antiviral drugs, a class of multifunctional urazole derivatives bearing a stereogenic C N axis were synthesized with excellent optical purities for antiviral evaluations against PVY. RESULTS The absolute configurations of the axially chiral compounds exhibited obvious distinctions in antiviral bioactivities, with several of these enantio-enriched axially chiral molecules showing excellent anti-PVY activities. In particular, compound ( R )- 9f exhibited remarkable curative activities against PVY with a 50% maximal effective concentration (EC 50 ) of 224.9 μg mL −1 , which was better than that of ningnanmycin (NNM), which had an EC 50 of 234.0 μg mL −1 . And the EC 50 value of the protective activities of compound ( R )- 9f was 462.2 μg mL −1 , which was comparable to that of NNM (442.0 μg mL −1 ). The mechanisms of two enantiomer of the axially chiral compounds 9f were studied by both molecule docking and defensive enzyme activity tests. CONCLUSION Mechanistic studies demonstrated that the axially chiral configurations of the compounds played significant roles in the molecule PVY-CP (PVY Coat Protein) interactions and could enhance the activities of the defense enzymes. The (S)-9f showed only one carbon–hydrogen bond and one π–cation interaction between the chiral molecule and the PVY-CP amino acid sites. In contrast, the (R)-enantiomer of 9f exhibited three hydrogen bonding interactions between the carbonyl groups and the PVY-CP active sites of ARG157 and GLN158. The current study provides significant information on the roles that axial chiralities play in plant protection against viruses, which will facilitate the development of novel green pesticides bearing axial chiralities with excellent optical purities. © 2023 Society of Chemical Industry.
研究领域:
植物病理学
·
有机化学
·
药学
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DOI
PubMed
高影响因子
RARE METALS
·
2025
·
IF 11
You Lv,Qiang Yang,Jixing Zhu,Dongyue Zhao,Junyuan Fan,Valery Konstantinovich Sheleg,Xin Qiu
en Mg−Ni−Y alloy is considered to be one of the most promising hydrogen storage materials, but its high dehydrogenation energy barrier hinders its practical application. A dual-stage heat treatment (490°C × 4 h + 550°C × 4 h) is applied to optimize the microstructure and hydrogen storage performance of a vacuum-melted Mg 94 Ni 3 Y 3 alloy. This process induces a two-level phase transformation of the long-period stacking ordered (LPSO) structure (18R + 14H→14H→18R), facilitating Ni/Y atom pre-distribution via stacking fault recombination at 490°C and promoting a eutectic-like reaction at 550°C. As a result, a large-scale eutectic-like structure composed of finely dispersed and uniformly interwoven Mg 2 Ni and LPSO phases is formed, characterized by a high density of phase boundaries. The optimization of the microstructure directly leads to the enhancement of hydrogen storage performance, as evidenced by a reduction in dehydrogenation activation energy from 139.7 to 113.5 kJ mol −1 and a decrease in enthalpy change from 85.8 to 71.7 kJ mol −1 . This work demonstrates a convenient microstructure regulation strategy, which is expected to advance Mg−Ni−Y alloys toward industrial applications. 摘要 zh Mg−Ni−Y 合金因其优异的储氢潜力而备受关注,但较高的脱氢能垒仍制约其工程化应用。针对真空熔炼的Mg 94 Ni 3 Y 3 合金,本研究采用双阶段热处理工艺(490°C×4 h+550°C×4 h)调控其显微组织与储氢性能。结果表明,该工艺诱导长周期堆垛有序(LPSO)结构经历两级相变过程(18R+14H→14H→18R):在490°C通过层错重组实现Ni/Y原子的预分布,在550°C进一步促进类共晶反应的发生。由此形成的大尺度类共晶组织由细小弥散且均匀交织的Mg 2 Ni相与 LPSO 相构成,具有高密度相界特征。显微组织的显著优化有效降低了脱氢活化能(由139.7降至113.5 kJ mol −1 )和焓变(由85.8降至71.7 kJ mol −1 ),从而提升了储氢动力学性能。本工作提出了一种简便高效的组织调控策略,为Mg−Ni−Y合金的工程化应用提供了新思路。
研究领域:
材料科学
·
氢气储存
·
金属合金
·
热处理工艺
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DOI
高影响因子
Materials Today Chemistry
·
2026
·
IF 7.4
Jin Chen,Naoyuki Hatada,Wenhao Li,Wenzhuo Chen,Donglin Han
Heavily acceptor-doped perovskite oxides have the potential to activate percolation conduction of protons at reduced temperatures, and the reported percolation proton conductors up to now are restricted to the systems containing high Sc content. However, larger trivalent rare earth elements (e.g., Y) are known to be better dopants for proton conducting zirconates, but their solubility is low. In this work, we propose a new strategy to design the percolation proton conducting perovskites, by introducing La and Y into the Sr and Zr-sites of SrZrO 3 , respectively, leading to the formation of (Sr 1.1- x La x -0.1 )(Zr 1- x Y x )O 2.95 (SLZY, x = 0.1 – 1.0), which takes Pnma and Pna 2 1 orthorhombic structures with x = 0.1 – 0.4 and 0.5 – 1.0, respectively. Interestingly, the conductivity decreases with the Y content increasing from 0.1 to around 0.7 and increases with the Y content further increasing to 1.0. Moreover, the activation energy of the bulk conduction shows the maximum value at x = 0.6. In addition to the expected monotonically increasing activation energy resulted from the enhanced structural asymmetry, these results imply that the trapping effect of protons plays an important role, which is enhanced with Y content increasing from 0.1 to around 0.6. Notably, higher Y content (e.g., x > 0.6) appears to activate the percolation conduction of protons, leading to the decreasing activation energy.
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产品关联
DOI
高影响因子
PROGRESS IN NUCLEAR ENERGY
·
2026
·
IF 3.2
Mei Li,Lina Yan,Rugeng Liu,Wei Han
To study the impact of fission product elements on spent nuclear fuel during high-temperature oxidation, this study selected yttrium (Y) as a representative element. UO 2 pellets doped with varying mass fractions of Y 2 O 3 (1, 3, and 5 wt%) were fabricated via high-temperature sintering. The results indicate that both the lattice parameter and grain size decreased with increasing dopant concentration, while the oxidation temperature increased significantly. Characterization of the oxidation products demonstrated a gradual reduction in U 3 O 8 content and a decrease in the average valence state of uranium ions as the Y 2 O 3 content increased. Kinetic analysis indicated an increase in the activation energy for UO 2 oxidation from 88.32 ± 2.21 kJ/mol (pure UO 2 ) to 122.27 ± 3.05 kJ/mol (5 wt% Y 2 O 3 - doped sample), confirming that Y 2 O 3 doping elevates the energy barrier for oxidation. This work provides critical data and a theoretical foundation for understanding the behavior of spent fuel containing rare earth fission products during oxidative volatilization, thereby offering valuable insights for optimizing spent fuel reprocessing strategies.
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DOI
高影响因子
iScience
·
2025
·Vol. 28
·期 12
·
IF 4.1
Dan Chen,Qingqing Ma,Xin Li,Tao Yang,Shang Wu,Yanju Wang,Deyu Hu
Intercellular movement plays an important role in plant virus infection and transmission, which provides an opportunity for antiviral agents that interfere with the intercellular motion. However, there are still few compounds that directly interfere with the movement of viruses between cells. Herein, a series of aurone derivatives containing sulfonamide active groups were designed and synthesized. Among them, compound D13 effectively inhibits virus infection by forming a stable hydrogen bond with Pro154 (P154) of potato virus Y (PVY) coat protein (CP). Further studies have shown that D13 can effectively interfere with the process of P154-mediated viral intercellular trafficking in plasmodesmata (PD). This study emphasizes the core position of virus intercellular movement in plant virus diseases and its inhibition strategy and confirms that the aurone derivative D13 is a candidate molecule for antiviral pesticides or intercellular movement inhibitors, providing a new direction for plant virus prevention and control.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 5.6
Ruiling Chang,Zhonghua Yao,Hua Hao,Minghe Cao,Hanxing Liu
BaTiO 3 -based ceramics are widely used as dielectric materials in base metal electrode multilayer ceramic capacitors (BME-MLCCs), and enhancing their stability is of considerable importance. In this study, Mn 2+ and Y 3+ are co-doped into BaTiO 3 via a chemical method. The acceptor Mn 2+ suppresses carrier migration, while Y 3+ promotes the formation of defect associates that further impede carrier movement, leading to a synergistic enhancement in both reduction resistance and dielectric stability. The results demonstrate that the formation of a core-shell structure significantly enhances both the reduction resistance and the temperature stability of the ceramics. Appropriate co-doping of Mn 2+ and Y 3+ effectively reduces the grain size and increases the activation energy of grain boundaries, thereby improving the bias stability. Simultaneously, co-doping helps maintain a low oxygen vacancy concentration and promotes the formation of defect dipoles ( [ M n T i ″ · V O · · ] , [ 2 M n T i ′ · V O · · ] and Y B a · Y T i ′ ), which further synergistically enhances the bias stability. In particular, the BT-M2Y1 ceramic exhibits a high insulation resistivity of 1.63 × 10 11 Ω cm, indicating good reduction resistance. Its temperature stability meets the EIA X8R specification. Under a DC bias field of 2.0 V/μm, the ceramic shows a minimal variation in dielectric constant of only −0.61 %, demonstrating excellent DC bias stability. Moreover, the BT-M2Y1 ceramic maintains a relatively high dielectric constant (∼1550) and a low dielectric loss (∼0.0078) even with a fine grain size of 204 nm. This study provides an important experimental basis for developing highly stable dielectric materials for BME-MLCCs.
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产品关联
DOI
高影响因子
SURFACE REVIEW AND LETTERS
·
2020
·
IF 0.835
PENGHUI CAO,YUHUA YAN,XINLI TIAN,RUIZHUO OUYANG,YUQING MIAO
Oxygen evolution reaction (OER) is of great importance in splitting water. However, the sluggish OER kinetics at the anode severely hinders the H 2 evolution at the cathode which is a crucial procedure for energy storage. Herein, we report the synthesis of a new OER catalyst of Co(OH) x (WO 4 ) y via a one-step hydrothermal method, where the incorporation of WO 4 2 − as a condenser greatly enhanced the electrocatalytic activity of Co(OH) 2 toward OER. Moreover, the introduction of mesoporous carbon (MC) further improves the electrocatalytic performance of Co(OH) x (WO 4 ) y by forming the nanocomposites of Co(OH) x (WO 4 ) y /MC. The synergism between Co(OH) 2 and WO 4 2 − and the synergistic catalytic effect of Co(OH) x (WO 4 ) y and MC majorly contributed to the apparently enhanced electrocatalysis of Co(OH) x (WO 4 ) y /MC toward OER. This work provides an efficient strategy to improve the electrocatalytic activity of Co(OH) 2 by introducing WO 4 2 − and forming nanocomposites between Co(OH) x (WO 4 ) y and MC for low-cost, convenient and highly efficient water oxidation.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES
·
2024
·
IF 2.1
Huanhuan Lu,Yongfeng Zhao,Tong Wang,Qiyu Wang,Chunyan Sun
In this study, a highly selective and sensitive composite fluorescence sensor (Y-CODs @PVDF@PVP) was developed for the quantitative and visual detection of Hg2+ by electrostatic spinning carbon quantum dots (CQDs) with polyvinylidene fluoride (PVDF) and polyethylene pyrrolidone (PVP). The Y-CODs @PVDF@PVP composite fluorescence sensor exhibited strong yellow fluorescence under ultraviolet light (365 nm), demonstrating stable detection capability for mercury (II) in water samples. The morphology, chemical composition, and optical properties of Y-CODs @PVDF@PVP were thoroughly investigated. Different quenching effects were observed in Y-CODs @PVDF@PVP based on varying concentrations of Hg2+, enabling accurate determination of Hg2+. The achieved detection limit was 9.27 nM. Both static quenching and dynamic quenching mechanisms contributed to the observed results. Notably, the method successfully detected Hg2+ in real water samples from Beichuan Lake as well as rice samples, yielding satisfactory outcomes. Furthermore, when combined with software image analysis, quantitative and visual detection of field Hg2+ levels was accomplished using the composite fluorescence sensor. This research provides valuable insights for developing portable sensors aimed at monitoring harmful substances in water.
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Wenjing Xu,Hengquan Yang,Chengyan Liu,Zhongwei Zhang,Chunguang Chen,Zhenyuan Ye,Zhao Lu,Xiaoyang Wang,Jie Gao,Junliang Chen,Zhengchuan Xie,Lei Miao
As a lead-free thermoelectric material, SnTe is inhibited by its inherent high carrier concentration and high thermal conductivity. This work describes the synergistic effect on the modulation of band structure and microstructural defects of SnTe by Ag and Y codoping, which gives rise to band convergence and multiple microstructural defects (secondary phases, dislocations, and boundaries) in the matrix and endows Sn0.94Ag0.09Y0.05Te with an increased power factor of ∼2485 μW m–1 K–2, an extremely low lattice thermal conductivity of ∼0.61 W m–1 K–1, and a peak zT as high as ∼1.2 at 873 K. This work reveals that the combination of Ag and Y could play a role in the synergistic optimization of electronic and phonon transport properties of SnTe by modifying the band structure and microstructures, providing guidance for enhancing the thermoelectric performance of the relevant materials.
研究领域:
材料科学
·
热电学
·
半导体物理
·
能源材料
✓ 已验证
DOI
高影响因子
ChemistrySelect
·
2026
·Vol. 11
·期 1
·e05258
·
IF 2
Qiong-Ru Wu,Meng-Ge Mao,Cheng-Yang Jiao,Jian-Bo Yang,Xin-Yu Li,Hua Mei,Yan Xu
Methanol steam reforming for hydrogen production is a promising hydrogen production technology that can meet the process or operation of hydrogen preparation, storage, transportation, and downstream utilization, contributing to the achievement of carbon neutrality. In this study, copper-based catalysts Cu x /MCM-41/HCOOH (x = 0.10, 0.15, 0.25) and Cu 0.15 X 0.01 /MCM-41/HCOOH (X = Y, Ga, Zr) were prepared by the modified impregnation method using MCM-41 as the carrier. In addition, the catalysts were comprehensively characterized using a variety of test methods, and the effects of copper content and type of additives on catalyst performance were investigated. Among the six catalysts, the Cu 0.15 Y 0.01 /MCM-41/HCOOH catalyst exhibited the lowest reduction temperature for CuO, the most effective dispersion of active metal, and the formation of more Cu 0 /Cu + species, demonstrating outstanding catalytic performance. Specifically, the methanol conversion rate achieved 99.85% with a H 2 selectivity of up to 99.91% and CO selectivity and CO 2 selectivity of 1.55% and 98.45%, respectively, at optimal reaction conditions of 250°C, the S/C molar ratio of 3:2, and the weight hourly space velocity (WHSV) of 0.16 h −1 . Graphical The Cu 0.15 Y 0.01 /MCM-41/HCOOH catalyst was prepared via a modified impregnation method for methanol steam reforming. At a reaction pressure of 1 MPa, a reaction temperature of 250°C, a steam-to-carbon ratio of 1.5, and a weight hourly space velocity of 0.16 h −1 , the catalyst exhibited a methanol conversion of 99.85%, a H 2 selectivity of 99.91%, and a CO selectivity of 1.55%. The catalyst demonstrated good stability, with no significant deactivation observed during the 110-h stability test.
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产品关联
DOI
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2025
·
IF 6.2
Ya Qin,Yuefei Long,Yunying Zhu,Lei Zhao,Qingwei Song,Zhongjie Shen,Yanju Wang,Deyu Hu
Potato virus Y (PVY) is among the top ten plant viruses globally, posing a significant threat to crop yield and quality. Current chemical control agents are limited in variety and offer suboptimal efficiency. To address this, we designed and synthesized a series of new vanillin-based α-amino phosphonate derivatives and evaluated their anti-PVY activities and underlying mechanisms. Among the tested compounds, C2 demonstrated the highest protective activity (EC50 = 198 μg/mL), outperforming existing agents such as ningnanmycin (NNM, EC50 = 537 μg/mL), dufulin (EC50 = 495 μg/mL), and vanisufane (EC50 = 210 μg/mL). The α-amino phosphonate moiety in C2 contributed to its enhanced protective and inactivating activities. Molecular docking revealed that C2 forms a hydrogen bond with arginine 188 (ARG188) in the PVY coat protein (CP). In vivo experiments confirmed the important role of ARG188 in PVY intercellular movement. By competitively binding to ARG188 and activating the plant immune response, C2 significantly reduced PVY pathogenicity. These findings highlight the potential of vanillin-based α-amino phosphonates as effective anti-PVY agents. Specifically, compound C2 binds to PVY CP ARG188 and impairs PVY mobility, stimulates host immunity, and suppresses viral proliferation, offering a promising foundation for the development of next-generation antiviral agrochemicals.
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DOI
PubMed
高影响因子
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