JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2020
·Vol. 167
·期 10
·100548
·
IF 3.721
Yingying Zhang,Liming Xu,Jingkun Xu,Weiqiang Zhou,Hui Zhang
Poly(3,4-ethylenedioxythiophene) and its derivatives provide an excellent platform as electrode materials for supercapacitors due to their superior stability and conductivity. In this study, a poly(2,3-dihydrothieno[3,4-b][1,4]dioxin-2-yl)methanol (PEDOT-MeOH) porous nanonet (PEDOT-MeOH-PNN), PEDOT-MeOH hollow nanotube array (PEDOT-MeOH-HNA) and PEDOT-MeOH-PNN coated PEDOT-MeOH-HNA (PEDOT-MeOH-PNN@PEDOT-MeOH-HNA) are successfully fabricated using a template-free electrodeposition of (2,3-dihydrothieno[3,4-b][1,4]dioxin-2-yl)methanol monomer. These three nanostructures were studied by Fourier transform infrared spectrum and Raman spectrum, scanning electron microscopy, thermal analysis and electrochemical methods, respectively. PEDOT-MeOH-PNN@PEDOT-MeOH-HNA has a specific capacitance of 40.5 mF cm−2 at 40 mV s−1, which is higher than PEDOT-MeOH-PNN (21.6 mF cm−2) and PEDOT-MeOH-HNA (35.5 mF cm−2). Moreover, the PEDOT-MeOH-PNN@PEDOT-MeOH-HNA based symmetric supercapacitor delivers excellent rate performance and superior cycling stability (90% of the initial capacitance remains after 10,000 cycles). The results indicate that the structural design of a supercapacitor electrode can improve their electrochemical performance, and promote the application and development of conducting polymers in the field of supercapacitors.
研究领域:
材料科学
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电化学
·
能源存储
✓ 已验证
DOI
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Hanze Zhang,Feng Tang,Shuanglin Wu,Chenmeizi Wang,Yaqing Yang,Fenglin Huang
2-Nonenal, a primary component of the characteristic “aging odor,” poses minimal toxicity but significantly affects quality of life and psychological well-being, necessitating its effective removal. However, the existing removal methods mainly rely on adsorption of activated carbon or odor masking after diffusion, which suffers from low efficiency and environmental concerns. This study presents an approach for eliminating 2-nonenal through a multilayered composite textile system that integrates the synergistic effects of amine-based adsorption and triboelectric-driven mechanisms, transforming waste static electricity into valuable resources. Manganese oxide particles were loaded onto the surface of PET by hydrothermal method (250.5 g/m2), and then modified by amination, and then combined with other different common fabrics to form double-layer composite fabric. Under 2 Hz friction frequency, interfacial contact electrification generates substantial surface charges up to 40 nC/cycle, with electrostatic effects enhancing catalytic performance through three synergistic mechanisms: (1) Continuous tribo-induced charge injection drives valence state oscillations in manganese oxides, concurrently generating dual reactive oxygen species (•O2– and •OH); (2) Locally intensified electric fields from accumulated interfacial charges significantly reduce activation energy for aldehyde group oxidation; (3) Amino-manganese oxide charge transfer complexes accelerate regeneration of high-valent manganese through electron-bridging effects, achieving 9% improvement in catalytic cycle efficiency. This electrocatalytic coupling mechanism achieves sustained 87.77% removal efficiency for 2-nonenal, providing an innovative self-powered and energy-efficient strategy for aldehyde pollutant remediation.
研究领域:
环境科学
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材料工程
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电化学
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纺织技术
·
除臭技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ChemistrySelect
·
2023
·Vol. 8
·期 40
·e202303078
·
IF 2.1
Yixin Tong,E. Mi,Li Zhou,Xiabin Wang,Biao Xiong
Graphical The synthesis of 2-acylindoles from sulfoxonium ylides with o-aminoaryl aldehydes via iridium-catalyzed N−H insertion and intramolecular condensation has been demonstrated. 2-Acylindoles possess widespread applications in functional chemicals. However, the convenient and selective synthesis of such important substructures has to date remained a challenge. Herein, a method to achieve 2-acylindoles from sulfoxonium ylides with o-aminoaryl aldehydes catalysed by Iridium has been developed with the merits of broad substrate scope, good functional tolerance, high efficiency and operational simplicity, which provides an alternative way to access functionalized indoles.
研究领域:
有机化学
·
药物化学
✓ 已验证
DOI
高影响因子
JOURNAL OF ETHNOPHARMACOLOGY
·
2025
·
IF 5.4
Qimeng Tian,Hong Jiang,Yajun Luan,Jingge Sun,Yihang Sui,Ling Chen,Yongxiang Wang,Ninghua Tan
Ethnopharmacological relevance Suhuang antitussive capsule (SH) is the only clinically approved traditional Chinese patent medicine for the treatment of post-infectious cough (PIC). During the past decade, our lab has conducted intensive researches on SH, including its efficacy and mechanism on PIC, and determined that SH has favorable anti-inflammatory, antitussive, expectorant, and anti-asthmatic pharmacological effects. Recently, we found that vicenin-2 (VIC-2) could be detected in SH and showed activity in vitro primary screening on PIC. Aim of the study To investigate the therapeutic effects of VIC-2 on PIC and its potential mechanisms, and want to elucidate VIC-2 as one of the efficacious components of SH. Materials and methods The PIC mouse model was established with lipopolysaccharide (LPS)-induced combined cigarette smoke (CS)-exposed ICR mice, while the in vitro assay was constructed to induce BEAS-2B cells with cigarette smoke extract (CSE). The therapeutic effects of VIC-2 on PIC in vitro and in vivo were assessed by pathological sections, cough assay, immune cell counting, and quantitative-polymerase chain reaction (Q-PCR). The mechanisms of VIC-2 on ferroptosis and mitophagy in PIC were further explored by cell viability assay, Prussian blue staining, lipid peroxidation assessment, confocal laser scanning microscopy, and western blotting. Subsequently, virtual docking, cellular thermal shift assay (CETSA), and drug affinity responsive target stability (DARTS) verified the target relationship between VIC-2 and LDL receptor-related protein 1 (LRP1). In addition, the link between LRP1 and mitophagy-dependent ferroptosis was explored by knocking down LRP1. Results VIC-2 significantly improved lung inflammation, oxidative stress, and airway remodeling in PIC and inhibited mitophagy-dependent ferroptosis, confirming that it is one of the antitussive components of SH for the treatment of PIC. LRP1 is one of the pharmacological targets of VIC-2, in which VIC-2 exerted the above effects through up-regulating LRP1 by influencing the LRP1-Parkin interaction. The blockade of LRP1 reversed the both in vitro and in vivo pharmacological activities of VIC-2 . Furthermore, our results showed for the first time that defects in LRP1 lead to ferroptosis. Conclusion This study demonstrates that VIC-2 inhibits mitophagy-dependent ferroptosis via LRP1 for the treatment of PIC, constituting one of the antitussive components of SH.
研究领域:
药理学
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分子生物学
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传统中药研究
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产品关联
DOI
PubMed
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Chuan Lai,Hongxia Yang,Xiaogang Guo,Xiulan Su,Lvshan Zhou,Lei Zhang,Bin Xie
The new organic corrosion inhibitor of 2-( p -bromobenzylthio)-1 H -benzimidazole (Br-BBD) was synthesized in this work. After prepared, the adsorption and corrosion inhibition performance of Br-BBD for Q235 steel in HCl solution were studied using EIS, SEM, polarization measurement and WLM (weight loss measurement). The results exhibit that Br-BBD acts as an excellent corrosion inhibitor for Q235 steel in HCl solution, and the inhibition efficiency can reach up to 98.07% when the Br-BBD concentration is 50 mg L -1 in 1.0 M HCl at 25°C. In addition, the adsorption of the mixed-type inhibitor of Br-BBD on Q235 steel surface obey Langmuir adsorption isotherm, which is governed by spontaneous chemisorption mechanism.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2024
·Vol. 35
·期 18
·1251
·
IF 2.8
Zheng Jinjie,Shen Honglie,Li Yufang,Li Hechao,Yue Zhen
Novel efficient visible and near-infrared emitting phosphors NaY(MoO 4 ) 2 (NYM):Ln 3+ (Ln = Ce and Yb) were proposed in this work. The crystal structure, lattice vibration characteristics, morphology, and luminescent properties of NaY(MoO 4 ) 2 phosphors were described. Sensitization of Ln 3+ from the host with various doping concentrations was investigated. The yellow-green emission was achieved in Ce 3+ single-doped NYM phosphors at UV ultraviolet excitation sensitized by the MoO 4 2− group. Under UV excitation, characteristic emissions of Ce 3+ at 400–700 nm and Yb 3+ at 1000 nm of NYM:Ce,Yb were observed, enabling the spectral down-conversion applications. With the increasing concentration of Yb 3+ , the emission intensity as well as the lifetime of Ce 3+ decreased, confirming the energy transfer from Ce 3+ ions to Yb 3+ ions. And the energy transfer coefficient was 27% for NYM:0.01Ce,0.10Yb phosphor. These results indicate that the as-prepared phosphors have potential applications in optical and photonic devices.
研究领域:
材料科学
·
光学材料
·
发光学
·
无机化学
·
光子学
✓ 已验证
DOI
高影响因子
MATERIALS SCIENCE-POLAND
·
2024
·Vol. 42
·期 2
·70-80
·
IF 1.3
Yanling Yu,Biwu Huang,Yafen Qu,Junshan Qiu,Yong Lai
[2-(3,4-epoxycyclohexyl) ethyl] triphenylsilane was synthesized, using triphenylsilane and 1,2-epoxy-4-vinylcyclohexane as the main raw materials. When the molar ratio of triphenylsilane to 1,2-epoxy-4-vinylcyclohexane was 1.0:1.2, the content of Wilkinson catalyst was 0.4%, the reaction temperature was 90°C, and the reaction time was 6 hours, the yield of [2-(3,4-epoxycyclohexyl) ethyl] triphenylsilane could reach 95.21%. The structure of the synthesized product was analyzed and characterized using FT-IR and 1H-NMR. The synthesized product was added to a bisphenol A-type epoxy resin (E-51) and a modified amine (593 amine) to prepare an adhesive. Then, the adhesive was poured into the mold and cured at 35°C for 8 hours. The cured sample exhibited the best performance when the ECETPS: E-51:593 amine molar ratio was 0.8:7.2:2. Thermal gravimetric analysis (TG) showed that the thermal stability of the cured samples increased relative to pure E-51 amine-cured samples with the synthesized product added. The mechanical properties of the samples were tested using a universal material testing machine, and the results showed a tensile strength of 37.95 MPa and a bending strength of 39.10 MPa.
研究领域:
有机化学
·
材料科学
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Bao Guo,Xiaohui Lin,Ian J. Burgess,Chun Yu
In this paper, shell-isolated nanoparticle enhanced Raman spectroscopy (SHINERS) has been applied to investigate the adsorption of typical collectors, butyl xanthate and 2-mercaptobenzothiazole (MBT), on pyrite surface. With the help of inert shell isolated gold nanoparticles as electric field enhancers, high quality electrochemical spectra were obtained in relation to real-world flotation conditions, enabling the quantitative identification of the chemical reactions occurring only on the mineral surface. It has been found that polysulphide anions are predominant oxidation product of pyrite after abrading and above 0 mV vs Ag/AgCl. Both the adsorption of xanthate and MBT are suppressed on pre-oxidized pyrite surface. The pre-formed polysulphide is diminished at negative potentials, which are favourable for collector’s adsorption. Compared to xanthate, MBT shows greater resistance to pyrite oxidation and a broader potential window for adsorption due to the presence of two “minerophilic” groups (endocyclic nitrogen atom bonding in addition to the interaction through the exocyclic S atom). Single exocyclic S atom bonding is predominant in more favarouble adsorption environments. Dithiolate, the oxidation products of xanthate and MBT, has been precluded due to the high stability of adsorbed collector. This is inconsistent with the ex-situ XPS measurement where air exposure may induce oxidation.
研究领域:
矿物学
·
电化学
·
表面科学
✓ 已验证
DOI
高影响因子
International Journal of Mining Science and Technology
·
2013
·
IF 0
Qin Wei,Shengming Xu,Qiang Xie
Three 2-mercaptobenzimidazole derivatives, 1-ethyl-2-mercapto-benzimidazole (EMBI), 1-propyl-2-mercapto-benzimidazole (PMBI) and 1-benze-2-mercapto-benzimidazole (BMBI), were designed and synthesized in the paper, and their collecting behavior in flotation separation process of galena over pyrite was investigated by flotation tests on lab scale. Apart from this, density functional theory (DFT) calculation and molecular dynamics (MD) simulation were also used to elucidate their collecting mechanism. Results of flotation tests indicate that separation of galena over pyrite is feasible at pH 10, and BMBI has the best floatability among three collectors. DFT calculations show that BMBI has the highest occupied molecular orbital (HOMO) energy and strongest collecting efficiency. The adsorption mode of three collectors on mineral surface by MD method indicates that the combination processes of collectors with mineral are exothermic, and the higher the binding energy, the firmer the collector adsorbs on the mineral surface and the higher collecting capacity. The calculation results demonstrate that the floatability of three collectors follows the order: BMBI > PMBI > EMBI, which is highly consistent with the flotation tests.
研究领域:
矿物加工工程
·
理论化学
✓ 已验证
DOI
SCIENCE OF THE TOTAL ENVIRONMENT
·
2022
·
IF 10.753
Yingdong Chen,Rongze Sun,Wentao Yan,Mengyao Wu,Yong Zhou,CongJie Gao
In many important industries, such as the textile printing industry, a large amount of dye/salt wastewater is often discharged, which can destroy the ecological environment of the water body. Membrane technology has a great potential in the treatment of environmental problems caused by dye/salt wastewater. Polyvinyl alcohol (PVA) nanofiltration (NF) membrane has a bright future in dye/salt wastewater treatment , however, works on this are rare. Herein, antibacterial PVA NF membrane incorporated with Cu(OH) 2 nanowires for the dye/salt wastewater treatment is reported. The membrane was prepared via coating the solutions containing PVA, glutaraldehyde and Cu(OH) 2 nanowires on the polyethersulfone ultrafiltration membrane. Cu(OH) 2 nanowires has a diameter of 60 nm and was successfully introduced into the membrane. The introduction of nanowires improved the membrane hydrophilicity and roughness, which is conducive to the improvement of membrane flux. Membrane separation performance for one component solution and dye/salt solution were investigated. The introduction of Cu(OH) 2 increases the flux of the membrane obviously (the highest increase is 178.78% (from 21.49 to 38.42 L·m −2 ·h −1 ·bar −1 , for NaCl solution as the feed). Besides, the membrane doped with nanowires also possessed a high dye/salt selectivity . For one component solution, the dye removal rate was over 97.00% while the salt rejection was low (the lowest was 13.18% (NaCl)). For the dye/salt solution, the dye (Congo Red) rejection kept at a high level (98.91%) and the salt (NaCl) rejection was still low (13.71%), while the flux was also high (37.56 L·m −2 ·h −1 ·bar −1 ). The performance is superior to that of many membranes reported in previous works. Moreover, the Cu(OH) 2 nanowires endowed the membrane with an improved and high antibacterial property. The sterilization rate of Escherichia coli and Staphylococcus aureus reached more than 99.99%.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
ENVIRONMENTAL POLLUTION
·
2020
·
IF 6.793
Xulei Zhao,Teng Zhang,Junhe Lu,Lei Zhou,Jean-Marc Chovelon,Yuefei Ji
Sulfate radical (SO 4 − )-based advanced oxidation processes (SR-AOPs) are promising in-situ chemical oxidation technologies widely applied for soil/groundwater remediation. The presence of non-target water constituents may interfere the abatement of contaminants by SR-AOPs as well as result in the formation of unintended byproducts. Herein, we reported the formation of toxic chloronitrophenols during thermally activated persulfate oxidation of 2-chlorophenol (2CP) in the presence of nitrite (NO 2 − ). 2-Chloro-4-nitrophenol (2C4NP) and 2-chloro-6-nitrophenol (2C6NP) were identified as nitrated byproducts of 2CP with total yield up to 90%. The formation of nitrated byproducts is a result of coupling reaction between 2CP phenoxyl radical (ClPhO ) and nitrogen dioxide radical (NO 2 ). As a critical step, the formation of ClPhO was supported by density functional theory (DFT) computation. Both 2C4NP and 2C6NP could convert to 2-chloro-4,6-dinitrophenol (2C46DNP) upon further treatment via a denitration-renitration process. The formation rate of 2C4NP and 2C6NP was closely dependent on the concentration of NO 2 − , solution pH, and natural water constituents. ECOSAR calculation suggests that chloronitrophenols are generally more hydrophobic and ecotoxic than 2CP. Our result therefore reveals the potential risks in the abatement of chlorophenols by SR-AOP, particularly when high level of NO 2 − is present in water matrix.
研究领域:
环境科学
·
化学工程
✓ 已验证
DOI
高影响因子
MICROCHIMICA ACTA
·
2014
·Vol. 181
·期 9
·903-910
·
IF 3.719
Wang Jia-Cheng,Wang Yong-Sheng,Rang Wei-Qing,Xue Jin-Hua,Zhou Bin,Liu Lu,Qian Qiu-Mei,Wang Yong-Song,Yin Ji-Cheng
We report on a sensitive and specific method for the visual and colorimetric detection of 8-hydroxy-2′-deoxyguanosine (8-OHdG) in human urine by using the 8-OHdG-aptamer (Apt) as the recognition element. The aptamer was adsorbed on the surface of gold nanoparticles which enhances their stability. On addition of 8-OHdG, the conformation of the aptamer changes to form a G-quadruplex structure, thereby losing the ability to protect the nanoparticles and causing a color change from red to blue. The conformational changes were also studied by circular dichroism. The response is linearly dependent on the concentration of 8-OHdG in the range from 5.6 to 282 nM, the limit of detection is 1.7 nM, the relative standard deviation ranges from 1.1 to 4.2 % (for n = 6), and the recoveries range from 95.9 to 104.9 %. The method paves the way for visual analysis of samples without the use of costly instruments.
8-OHdG-aptamer was adsorbed onto the surface of AuNPs which enhances their stability. On addition of 8-OHdG, the conformation of 8-OHdG-aptamer changes to form a G-quadruplex structure, losing the ability to protect the AuNPs and causing a color change of the system.
研究领域:
分析化学
·
生物化学
·
纳米技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）