Nanoscale
·
2024
·
IF 5.8
Liping Lian,Hui Xu,Ruchen Shu,Yujie Tan,Nan Wang,Jinzhu Ma,Feng Qin,Danyan Cen,Jianyuan Hou,Renxi Zhang
A novel catalyst was fabricated using a two-step nonthermal plasma method by regulating surface hydroxyl groups on Na/activated carbon (AC) with 0.1 wt% Pt loading (Pt/Na/AC (P&P)) and achieved high formaldehyde (HCHO) oxidation performance at ambient temperature. Based on characterization results, we found that in the first step of nonthermal plasma treatment under argon–water, the proportion of terminal OH groups (ter-OH groups) evidently increased. Following the introduction of Na and Pt, the relative abundance of doubly bridged OH groups connecting C and Na (briNa–C-OH groups) and Pt2+ species also increased in the second step of nonthermal plasma reduction under argon, resulting in enhanced HCHO catalytic oxidation capability through a rapid reaction pathway ([HCOO−] + [OH]a → CO2 + H2O). Compared with the catalyst prepared via nitric acid oxidation and thermal deposition (Pt/Na/AC (H&T)), more Pt–Ox–Na species and surface OH groups were obtained on the Pt/Na/AC (P&P) catalyst, which not only reduced Pt consumption but also improved HCHO catalytic activity with around 100% conversion of HCHO to CO2 at 25 °C, while the Pt/Na/AC (H&T) catalyst only achieved 70% conversion. This work thus provides a new strategy for HCHO oxidation at room temperature and a novel perspective on the environmentally friendly synthesis of effective noble catalysts.
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Energy Storage Materials
·
2024
·
IF 18.9
Gege Wang,Yichao Wang,Lingbo Yao,Jianhua Yang,Xiaowei Chi,Yu Liu
Aqueous zinc metal batteries with unique advantages of intrinsic safety and low cost are considered as one of the most promising next-generation energy-storage technologies. However, their lifespan is significantly constrained by the electrolyte, specifically due to limitations caused by proton-induced HER and dendritic growth at the anode side and dissolution phenomena at the cathode. Unlike most studies on the protic electrolyte systems, herein, a new aprotic hybrid electrolyte of Na/Zn tetrafluoroborate-trimethyl phosphate with ultralow proton activity tuned by reconstruction of hydrogen bonding network and ultrahigh interfacial stability endowed by simultaneous formation of SEI and CEI were designed for the first time. Attributed to the synergistic effect of proton activity attenuation and ZnF 2 -Zn 3 (PO 4 ) 2 SEI formation, HER-trigged corrosion current was decreased by 96.52%, which leads to an exceptionally high coulombic efficiency up to 99.63%, and operational lifespan exceeding 2000 hours at 1 mA cm − 2 / 1 mAh cm − 2 for Zn||Cu asymmetric cell and Zn||Zn symmetric cell, respectively. Furthermore, the suppression of excess hydrated proton co-insertion reaction and construction of inorganic-organic CEI enabled the PBAs||Zn full cell a prolonged cycling life of 6000 cycles with an ultralow decay rate of 0.004% per cycle. The special electrolyte utilizing cheap tetrafluoroborate salts in conjunction with cost-effective PBA cathode and Zn anode provides a new choice for low-cost, high-safety, non-toxic batteries for practical applications.
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CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Shuting Wen,Linlin Zhou,Ling Chen,Yaoguo Fang,Qian Cheng,Haifeng Yu,Hao Jiang
High-safety and low-cost Na 4 Fe 1.5 Mn 1.5 (PO 4 ) 2 (P 2 O 7 ) (NFMPP) is a highly promising cathode for Na-ion batteries (SIBs), offering a higher energy density than typical NFPP. However, its performance is hindered by Na/Mn anti-site defects and Jahn-Teller (J-T) distortion, resulting in voltage hysteresis and sluggish Na-ion diffusion kinetics. Herein, we demonstrate a high-rate and long-life NFMPP cathode by synergistically optimizing the initial molar ratio of Na-ion to transition metal (Na/TM) and vanadium (V) doping. The Na/Mn anti-site defects have been greatly alleviated from 5.9 % to 2.2 %, effectively suppressing the voltage hysteresis of Mn 2+ /Mn 3+ redox plateau. Meantime, the electron-rich V doping with strong V-O bonds (541 kJ/mol) exhibits strong interaction with Mn, significantly reducing the effect of J-T distortion on Na-ion diffusion. As a consequence, the optimized NFMPP cathode delivers a superior initial charge capacity of 115.1 mAh/g at 0.1C and achieves a high reversible energy density of 334 Wh/kg, surpassing many reported phosphate-based cathodes. It also exhibits exceptional cycling stability, retaining 94.1 % of its capacity after 500 cycles, making it a highly competitive candidate for next-generation SIBs.
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DRUG DEVELOPMENT RESEARCH
·
2021
·Vol. 82
·期 7
·969-979
·
IF 4.36
Ruixian Xing,Xuewen Liu,Buxian Tian,Yan Cheng,Longguang Li
Parkinson's disease (PD) is a disabling neurodegenerative disease mainly caused by degeneration of mesencephalic dopaminergic neurons in the substantia nigra pars compacta (SNpc). The neuroprotective role of Na + /H + exchangers isoform-1 (NHE1) inactivation in cerebral ischemic damage has been elucidated. The current study aimed to investigate the impacts of NHE1 in PD. In this study, 6-hydroxydopamine (6-OHDA)-induced PD rat models were established to attempt to illuminate the role and underlying mechanisms of NHE1 in SNpc neurons of PD. Meanwhile, nerve growth factor-stimulated PC12 cells followed by 6-OHDA treatment was used to mimic PD in vitro. Results showed that the protein levels of NHE1 were significantly increased in the SNpc neurons of rats and differentiated PC12 cells after 6-OHDA treatment. Inactivation of NHE1 with chemical inhibitor HOE642 suppressed SNpc neuronal loss and NHE1 expression in PD rats. The overlays of tyrosine hydroxylase and NHE1 displayed that NHE1 expression was not colocalized but closely associated with TH. Besides, treatment with HOE642 relieved the dyskinesia, mitochondrial dysfunction, and neuronal apoptosis. Further in vitro evidence confirmed that inhibition of NHE1 by genetic-knockdown prevented mitochondrial dysfunction and apoptosis. Our study represents the first experimental evidence of a potential role for NHE1 in the pathogenesis of PD.
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Results in Engineering
·
2023
·
IF 5
Yeqing Huang,Manna Wang,Yi Huang,Jin Shang,Baoyu Liu
The distribution of Brønsted acid sites in three-dimensional 12-membered pore channels of Beta zeolite was a decisive factor in the alkylation of benzene with cyclohexene. Here, the Brønsted acid site distribution in Beta zeolitic channels was precisely regulated by tuning the content of Na + in crystallization system combined with tetraethylammonium cation, the Beta-55 with Brønsted acid sites exclusively located in straight channels (along a - and b -axis directions) was successfully synthesized by utilizing tetraethylammonium as the structure-directing agents without Na + species, and the fraction of Brønsted acid sites in sinusoidal/straight channels of Beta zeolites can be accurately controlled by tailoring the content of Na + in synthesis gel. Catalytic properties in the liquid alkylation between benzene and cyclohexene exhibited that Beta-55 zeolites with the Brønsted acid sites solely located in a -axis and b -axis channels showed the highest cyclohexene conversion, cyclohexylbenzene selectivity and longest lifetime in this reaction. In addition, the resultant Beta zeolites also exhibited low coke generation rate and robust regeneration performance in the alkylation reaction.
研究领域:
催化
·
化学工程
·
材料科学
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JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Shuting Zhao,Wentao Qi,Chao Yang,Rui Ling
Na 3 V 2 (PO 4 ) 3 has received a lot of attention as a prospective cathode for sodium-ion batteries (SIBs) owing to its strong 3D wide-open architecture for Na + transport. However, the practical application is still hampered by its poor electronic conductivity and weak Na + diffusion kinetics . In this paper, a novel Mg 2+ -doped Na 3 V 2 (PO 4 ) 3 flower-like cathode (Na 3+x V 2-x Mg x (PO 4 ) 3 /C, x = 0, 0.02, 0.04, 0.06) with abundant mesoporous has been synthesized by a convenient template-assisted sol-gel method. Mg 2+ doping successfully triggers V 4+ /V 5+ reversible redox with improved voltage plateau and reversible capacity. The hierarchical mesoporous structure combined with carbon layers is beneficial to the fast transport of Na + and e − , which guarantee improved kinetic properties and enhanced conductivity. Attributed to these competitive advantages, significantly improved electrochemical properties of Na 3.04 V 1.96 Mg 0.04 (PO 4 ) 3 /C (NVMP-4) are acquired, including extremely high specific capacity (123.8 mAh g −1 at 1C), excellent rate performance (73.8 mAh·g −1 at 100C) and exceptionally stable energy output with 89.1 % capacity retention after 3000 cycles at 20C. Additionally, when assembled with a hard carbon anode (HC), NVMP-4||HC provides an exceptional energy density of 216.9 Wh kg −1 at 0.2C. By enhancing nanostructure and rational surface engineering, this project offers fresh perspectives for creating superior electrodes, increasing the energy density of SIBs.
研究领域:
材料科学
·
电化学
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ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Jian Feng,Shao-hua Luo,Yang Zhan,Sheng-xue Yan,Peng-wei Li,Lin Zhang,Qing Wang,Ya-hui Zhang,Xin Liu
Thanks to their high conductivity and theoretical capacity, transition metal selenides have demanded significant research attention as prospective anodes for sodium-ion batteries. Nevertheless, their practical applications are hindered by finite cycle life and inferior rate performance because of large volume expansion, polyselenide dissolution, and sluggish dynamics. Herein, the nitrogen-doped carbon (NC)-coated FeSe2 nanoparticles encapsulated in NC nanoboxes (termed FeSe2@NDC NBs) are fabricated through the facile thermal selenization of polydopamine-wrapped Prussian blue precursors. In this composite, the existing nitrogen-doped dual carbon layer improves the intrinsic conductivity and structural integrity, while the unique porous yolk–shell architecture significantly mitigates the volume swelling during the sodium/desodium process. Moreover, the derived Fe–N–C bonds can effectively capture polyselenide, as well as promote Na+ transportation and good reversible conversion reaction. As expected, the FeSe2@NDC NBs deliver remarkable rate performance (374.9 mA h g–1 at 10.0 A g–1) and long-cycling stability (403.3 mA h g–1 over 2000 loops at 5.0 A g–1). When further coupled with a self-made Na3V2(PO4)3@C cathode in sodium-ion full cells, FeSe2@NDC NBs also exhibit considerably high and stable sodium-storage performance.
研究领域:
材料科学
·
电化学
·
能源存储
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2016
·Vol. 28
·期 1
·487-492
·
IF 1.798
Zhang Xinxiu,Liu Jinsong,Zhu Kongjun,Wang Jing,Li Ziquan,Qiu Jinhao
High-quality lead-free piezoelectric x Mn-doped (K 0.48 Na 0.52 ) 0.985 Li 0.015 NbO 3 films (KNLN; x = 0, 0.01, 0.02, 0.03) were successfully deposited onto Pt(111)/Ti/SiO 2 /Si(100) substrates by sol–gel method. Effects of Mn substitution on the microstructure, dielectric properties, ferroelectric properties, and leakage current of the KNLN films were investigated in detail. Mn-doping can significantly improve the ferroelectric properties and decrease the leakage current of KNLN films. Optimal dielectric properties were obtained in films doped with 2 mol% Mn, whose dielectric constant and dielectric loss at 1 kHz were 875 and 0.030, respectively. In addition, well-saturated ferroelectric P - E hysteresis loop with large remanent polarization (2 P
r ) and coercive field ( E
c ) of 22.5 μC/cm 2 and 65 kV/cm were obtained in 2 mol% Mn-doped KNLN film at an applied electric field of 200 kV/cm.
研究领域:
材料科学
·
物理学
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JOURNAL OF HAZARDOUS MATERIALS
·
2026
·
IF 10.6
Fenghua Shen,Chaolong Liu,Jie Yu,Kaisong Xiang,Bangwei Bai,Xin Liang,Guangpeng Sun,Shide Li,Hui Liu
To address the issues of low activity and poor stability of manganese-based catalysts in the catalytic degradation of refractory volatile organic compounds such as chlorobenzene (CB), this study designed a sodium-doped Mn-Cu bimetallic catalyst supported on hydroxyl-rich pseudo-boehmite (PB), denoted as Na-CuMnO x /PB, depending on the route of “support hydroxylation, bimetallic synergy, and alkali metal modification”. The catalyst achieved highly efficient degradation of CB under room temperature with the non-thermal plasma assistance. The PB support significantly increased surface hydroxyl groups and acidity. MnO x /PB showed a degradation efficiency of 85.14 %, superior to the 73.98 % achieved by a conventional Al 2 O 3 -supported catalyst. Cu doping promoted the formation of a Mn-Cu synergistic structure, increasing the surface-adsorbed oxygen to 56.59 % and the Mn(IV)/Mn(III) ratio to 0.63, thereby improving the degradation efficiency to 92.02 %. However, chlorine deposition (Cl content: 3.91 %) caused rapid deactivation. After Na modification, the Na-CuMnO x /PB catalyst exhibited a further increased Mn(IV)/Mn(III) ratio of 0.79, enhanced weak basic and acidic sites. The abundant surface hydroxyl groups and alkaline sodium hydrolysis facilitated HCl generation, achieving an HCl selectivity of 40.95 % with surface chlorine deposition as low as 0.59 %, thereby enabling the catalyst to maintain a degradation efficiency of 95.95 % over 16 h. Mechanism studies revealed the crucial roles of acid-base sites, reactive oxygen species, and metal valence states in CB degradation. The bimetallic system promotes the redox cycling between Cu(II)/Cu(I) and Mn(IV)/Mn(III), enabling continuous regeneration of active species. This work provides new insights for designing highly active and chlorine-tolerant catalysts for low-temperature purification of chlorine-containing VOCs.
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Pharmaceuticals
·
2026
·Vol. 19
·期 2
·275
·
IF 5.7
Zhongnan Hu,Hui Liu,Weihua Wu,Tayyab Ali,Adam Junka,Farukh S. Sharopov,Xuan Zou,Shisong Fang,Yanfang Sun
Background: Influenza A virus is an acute respiratory virus that spreads quickly, affects a broad range of populations, and can lead to many complications and mortality.ArtemisiaL. species are widely used in traditional medicine, but their antiviral potential against H1N1 remains uncertain.Methodology: Network pharmacology and molecular docking were used to computationally explore their potential function in this domain, and to investigate how their invasion mechanisms and adsorption occur. UPLC-MS/MS analysis identified the main components of the extracts. The anti-H1N1 mechanism ofArtemisiaL. extracts was studied in vitro.Results: Network pharmacology identified 95 key targets betweenArtemisiaL. and IAV, with quercetin and luteolin as core active compounds. Molecular docking predicted strong binding affinities between these compounds and influenza virus proteins. UPLC-MS/MS analysis identified 75, 100, and 64 chemical components inACBE,AALE, andACTE, respectively, mainly flavonoids and terpenoids.ArtemisiaL. extracts exhibited both preventive and therapeutic effects against H1N1, reducing progeny virus NP mRNA and protein levels. In vitro experiments showed that higher concentrations of the extracts prevent virus attachment to MDCK cells by denaturing the HA protein. NA plays an essential role in progeny virus release. We found that a high concentration of ACTE can inhibit NA up to 85%, and ACBE showed a low inhibitory effect on NA.Conclusions: In terms of therapeutic effects,ArtemisiaL. extracts can regulate intracellular inflammatory factors via the TLR4/NF-κB/MyD88 signaling pathways and reduce the expression of IL-1β, IL-6, TNF-α, TLR4, NF-κB, p65, and MyD88 at the mRNA level, thereby inhibiting H1N1 virus replication. These results suggest that bioactive components inArtemisiaL. extracts may inhibit H1N1, potentially leading to the development of natural-product-based anti-influenza agents.
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JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2026
·
IF 6.3
Decheng Kong,Zhanhui Peng,Qizhen Chai,Yuanhao Wang,Di Wu,Lingling Wei,Pengfei Liang,Zupei Yang,Xiaolian Chao
In recent years, there have been many significant breakthroughs in the research of potassium sodium niobate (KNN) based piezoelectric ceramics, positioning them as promising candidates for high-temperature piezoelectric device applications. To achieve synergistic optimization of high piezoelectric performance and high Curie temperature, the composition was designed to lie within the orthorhombic-tetragonal (O-T) phase coexistence region at room temperature by regulating the K/Na ratio, while the overall lattice stability was preserved. Our results show that the 0.96(KₓNa 1-x )(Nb 0.98 Sb 0.02 )O 3 -0.04Bi 0.5 Li 0.5 HfO 3 ceramic at x = 0.48 exhibits a high inverse piezoelectric constant of ~1383 pm/V and a strain of 1.32%, which are primarily attributed to the reduced polarization switching barrier enabled by the O-T phase coexistence at room temperature. Meanwhile, the local structural heterogeneity introduced by Sb 5+ and Hf 4+ doping further enhances the electrical strain response. Notably, the ceramic maintains a high Curie temperature of 276 °C, governed by the intrinsic lattice stability without significant compromise, confirming its great potential for high-temperature piezoelectric device applications.
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LANGMUIR
·
2026
·
IF 4.4
Ziyi Wan,Chunxi Hai,Yanxia Sun,Shengde Dong,Luxiang Ma,Qi Xu,Xin He,Yuan Zhou
Na3V2(PO4)3 has garnered significant attention as a promising cathode material for sodium-ion batteries due to its excellent ionic conductivity and robust structural stability. However, its further large-scale practical application has been hindered by its low electrical conductivity and poor interface kinetics. Therefore, it is reported in this study that the discharging/charging cycling and rate performance of Na3V2(PO4)3 cathodes are dramatically improved by the uniformly formed 3D carbon networks. Evidently, the Na3V2(PO4)3 cathode material prepared under the optimized conditions exhibited a relatively high initial capacity of 109.30 mAh/g at 0.1C with an initial Coulombic efficiency (ICE) of 99% and achieved an appreciable capacity of 99.42 mAh/g with a capacity retention of 96.39% after 400 cycles at 2C. Based on different characterizations and electrochemical performances, both the formation and sodium storage mechanism of Na3V2(PO4)3-based composite cathodes were initially concluded, which is significant and important for improving electrical conductivity and designing practical carbon-cladding strategies for Na-ion batteries.
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