JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION
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2015
·
IF 1.648
Ye Tian,Benzhi Ju,Shufen Zhang,Xiuling Duan,Daopeng Dong
2-Hydroxy-3-butoxypropyl hydroxyethyl celluloses (HBPEC), which are thermoresponsive polymers, are prepared by grafting butyl glycidyl ether onto hydroxyethyl cellulose. The effects of several factors on the cloud point (Tc) of the HBPEC are also investigated. The Tc of HBPEC can be tuned to a ranging from 17.0 to 43.0 °C by changing the molar substitution of hydrophobic groups. Increasing the concentration of HBPEC leads to a faster phase transition as well as a corresponding linear decrease in the Tc. A series of salts with common anions or cations are used to investigate the effects of specific anions or cations on the Tc of HBPEC aqueous solutions. It is discovered that the Tc of HBPEC is largely influenced by the variation of cation identity and concentration. Plotting Tc as a function of cation activity shows that the Tc can be classified by charge density.
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高影响因子
Frontiers in Chemistry
·
2018
·
IF 4.155
Jiang Zi-Min,Xu Ting-Ting,Yan Cong-Cong,Ma Cai-Yun,Dai Shu-Ge
Here, we report our finding in the fabrication of novel porous urchin-like Ni2/3Co1/3(CO3)1/2(OH)·0. 11H2O (denoted as NC) nanomaterial composed of numerous nanoneedles through an one-step hydrothermal method, which deliveres a high specific capacity of 318 C g−1 at a current density of 1 A g−1. Moreover, an architectural composite electrode consisting of the porous NC nanoneedles wrapped by reduced graphene oxide (rGO) nanosheets exhibits large specific capacity (431 C g−1 at 1 A g−1), high rate capability and long cycling life (94% capacity retention after 5,000 cycles at 20 A g−1). The presence of rGO in the composite electrode greatly improves the electronic conductivity, providing efficient current collection for fast energy storage.
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高影响因子
GREEN CHEMISTRY
·
2016
·Vol. 18
·期 10
·3075-3081
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IF 8.506
Dezhang Ren,Zhiyuan Song,Lu Li,Yunjie Liu,Fangming Jin,Zhibao Huo
A novel approach for the production of 2,5-hexanedione (HDN) and 3-methyl-2-cyclopenten-1-one (3-MCO) from 5-hydroxymethylfurfural (HMF) by water splitting with Zn is reported for the first time. The use of high temperature water (HTW) conditions is the key for the efficient conversion of HMF to HDN and 3-MCO. Parameters regarding the Zn amount, temperature and reaction time are optimized and HDN and 3-MCO are produced in 27.3% and 30.5% yields, respectively. The roles of HTW and ZnO obtained by oxidation of Zn in water for the conversion of HMF, together with intermediate structures, are discussed to understand the mechanism of the reaction.
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高影响因子
TEXTILE RESEARCH JOURNAL
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2022
·
IF 2.455
Xun Zhang,Sarkodie Bismark,Zhifeng Zhu
Tertiary amine groups can exhibit and lose cationic properties at different pH levels, and this group can be introduced to starch chains to satisfy the demand for sizing and desizing. However, the effect of pH on tertiary amine groups in toughening starch film and improving adhesion is still unclear. Therefore, 2-dimethylaminoethyl starch (DMAES) was prepared via tertiary aminated starch with 2-dimethylaminoethyl chloride hydrochloride. The influences of pH on the mechanical properties of DMAES films and the adhesion to cotton fiber were investigated. In addition, the desizability and biodegradability of DMAES were measured. It was found that introducing the group of 2-dimethylaminoethyl could toughen the starch film and increase the adhesion to cotton fiber. DMAES has a higher zeta potential and the adhesion to cotton fibers in acidic conditions than in alkaline conditions. In addition, it is easy to remove the DMAES from the yarns and obtain higher desizing efficiency with alkali desizing. Tertiary amination of starch with the 2-dimethylaminoethyl group was a good way for starch to improve adhesion and obtain a higher desizing efficiency.
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JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2016
·Vol. 163
·期 13
·F1309
·
IF 3.014
Xiaojing Chen,Wen Wen,Jing Hu,Hejia Su,Haibin Li,Xiangyang Kong,Marta Boaventura
Based on CsH5(PO4)2, sulfonated poly(ether ether ketone) (SPEEK), and phosphosilicate sol, proton-conducting CsH5(PO4)2/phosphosilicate/SPEEK composite electrolyte membranes have been prepared by a sol–gel method followed by mechanical ballmilling. The chemical structures, morphologies, thermal performances, stability, and proton conductivities of the composite electrolyte membranes were investigated. After incorporating the SPEEK polymer, these composite membranes exhibited adequate flexibility and mechanical performance; despite inorganic content of up to 80 wt%, a tensile strength of 6.2 MPa was maintained. Specifically, the composite electrolyte membrane displays a high proton conductivity of 14.6 mS cm−1 at 250°C under 47% H2O/N2 atmosphere. A fuel cell equipped with the composite electrolyte membrane showed a stable output voltage over the continuous measurement of 50 h under a constant output current density of 40 mA cm−2.
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VACCINE
·
2025
·
IF 3.5
Yingjie Zhong,Huimin Yang,Wenqin Chai,Danyu Chen,Yannan Xue,Min Li,Xiongyan Meng,Shuai Meng,Jing-Ren Zhang,Chao Wu,Chengli Zong
Streptococcus suis serotype 2 (SS2) is a major zoonotic pathogen responsible for severe infections in both pigs and humans. Despite its clinical significance, no effective vaccine is currently available, and the influence of capsular polysaccharide (CPS2) structural features on host immunity remains unclear. Here, we identified a fast-growing SS2 strain from a panel of 40 clinical isolates and established a novel, reliable CPS2 purification method. This approach combines polyethylenimine-mediated nucleic acid precipitation with phenol-based protein denaturation, eliminating the need for column chromatography and enabling gram-scale CPS2 recovery per liter of culture while preserving structural integrity. To examine the role of sialic acid, we compared antibody responses induced by native and desialylated CPS2 conjugates in mice, which revealed no significant differences. Based on this finding, a native CPS2 conjugate vaccine was subsequently evaluated in pigs, where it induced robust IgG responses and conferred significant protection against virulent SS2 challenge. The effects of different adjuvants and dosages were also investigated. Collectively, these results establish an efficient CPS2 production platform, clarify the limited impact of sialic acid on conjugate-induced antibody responses, and highlight the potential of CPS2-based conjugates as promising vaccine candidates against SS2 infection.
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高影响因子
Industrial Chemistry & Materials
·
2025
·
IF 11.9
Rongkai Cui,Minlei Yin,Xiaoyan Chen,Xiaoyu Lou,Chen Yang,Ting Qiu,Jie Chen
To achieve sub-angstrom separation of N-methylpyrrolidone and 1,5-dimethyl-2-pyrrolidone, cyclodextrin-derived carbon materials with distinct pore environments and surface functionalities were synthesized via hydrothermal carbonization and high-temperature pyrolysis. Three types of carbons were obtained: non-porous carbons rich in surface functionalities, carbons with both functionalities and microporous structures, and carbons with limited functionalities but diverse micropore environments. Systematic adsorption experiments, supported by density functional theory and molecular dynamics simulations, were conducted to establish the structure–performance relationships. The results demonstrate that surface functionalities alone are insufficient for separation, whereas pore confinement is the decisive factor. A 7.3 Å pore was identified as the optimal confinement space, providing the strongest thermodynamic interactions and the fastest diffusion kinetics, thereby enabling highly selective adsorption of 1,5-dimethyl-2-pyrrolidone from N-methylpyrrolidone. This work not only clarifies the pore formation mechanism of cyclodextrin-derived carbons but also highlights precise pore-size tuning as a paradigm for sub-angstrom molecular separation, offering theoretical guidance for the design of advanced adsorbent materials.
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JOURNAL OF MATERIALS SCIENCE
·
2025
·
IF 3.9
Pang Renze,Dong Xueyu,Wu Shaowei,Cheng Xinhua
High-performance 3D-Zn@Zn 3 (PO 4 ) 2 anode was constructed by a simple two-step strategy with 3D-Zn electrode prepared via electrodeposition followed by Zn 3 (PO 4 ) 2 protective layer decorated on its surface via chemical reaction exhibiting good universality. 3D-Zn@Zn 3 (PO 4 ) 2 anode demonstrated high hydrogen evolution overpotential and transference number of Zn 2+ besides low desolvation energy barrier and rapid transfer kinetics of Zn 2+ . Its symmetric cell could understand more than 1200 h at 1 mA cm −2 for 1 mA h cm −2 . When the anode was assembled into zinc-ion battery with MnO 2 cathode, it delivered specific capacity of 229.43 mA h g −1 at 0.1 A g −1 as well as exhibited remarkable rate capability and long-term cycling stability with capacity retention of 65.0% and Coulombic efficiency of 99.6% after 400 cycles under 1 A g −1 . The synergistic effect was studied between Zn 2+ -conductive hopeite layer and 3D-Zn electrode with (002) crystal plane orientation as well as three-dimensional (3D) microstructure as a template.
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高影响因子
PHYTOMEDICINE
·
2025
·
IF 8.3
Yufeng Yao,Lijun Shao,Ziqi Li,Jiahao Liang,Chenchen Zhu,Shumei Wang,Chaozhan Lin,Fangle Liu
Background Interstitial pneumonia, particularly usual interstitial pneumonia (UIP) and idiopathic pulmonary fibrosis (IPF), is a disease with progressive and fatal disorder, and limited treatment options. Xiebai San (XBS), a classical Chinese herbal formula, has shown clinical promise but its mechanism of action remains unclear. Purpose To clarify the effects and mechanism of XBS on interstitial pneumonia. Methods The in vivo pharmacochemical analysis (UPLC-Q-Exactive-Orbitrap MS/MS), network pharmacology, and GEO database analysis (GSE10667) were applied to predict potential targets of XBS on interstitial pneumonia. BLM-induced mice received XBS (1.4, 2.8, 5.6 g/kg) or dexamethasone (0.5 mg/kg) for 21 days. Lung index, histopathology observation (H&E, Collagen-1 IHC), pulmonary function, and biomarkers of inflammation, oxidative stress and fibrosis were used to evaluated the efficacy of XBS. Reverse-phase protein microarray (RPPM), RT-qPCR, and Western blotting were integrated to clarify its mechanism. Results Thirty-seven components of XBS were identified in vivo , and they were associated with 237 potential targets for interstitial pneumonia. And GEO analysis confirmed the upregulation of key nodes (NCOA2, ESR1, and ESR2) in patients. XBS significantly attenuated BLM-induced lung damage, evidenced by reduced lung index, improved pulmonary function (Penh, EEP, PIF, PEF), decreased inflammatory infiltrates, collagen deposition, and alveolar destruction. XBS suppressed proinflammatory cytokines (TNF-α, IL-1β), oxidative stress (MDA, MPO), restored antioxidants (GSH, SOD), and inhibited fibrotic factors (TGF-β1, α-SMA, Collagen-1/3). Mechanistically, XBS downregulated the mRNA and protein expression of NCOA2 and ESR1/2, subsequently inhibiting glycolytic metabolic reprogramming (G6PC, PFKFB3, HIF-1α) and the TGF-β1/ERK1/2-Smad7 pro-fibrotic signaling pathway. Conclusion XBS alleviates BLM-induced interstitial pneumonia via NCOA2-ESR1/2-driven glycolytic metabolic reprogramming and TGF-β1/ERK1/2-Smad7 fibrotic signaling, offering a mechanistic rationale for interstitial pneumonia.
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JOURNAL OF MEMBRANE SCIENCE
·
2021
·
IF 8.742
Lanxingyu Liu,Xingtao Zuo,Jiajie He,Yun Zhou,Juan Xiong,Cong Ma,Zhongbing Chen,Shuili Yu
The preparation of high-performance nanofiltration membranes with high permeability and selectivity is a great challenge. Herein, we proposed 2-Aminophenol-4-sulfonic acid (APS) and piperazine (PIP) co-deposition for the first time through the interfacial polymerization (IP) with trimesoyl chloride (TMC) to form a polyamide (PA) layer. APS-incorporated membrane had a thinner active layer (20–60 nm), larger pore size and smoother membrane surface as well as strengthened electronegative feature. The pure water permeability of the membranes reached 5.8 times that of the control membrane, up to 70.8 LMH/bar with 96.4% rejection for RB, 99.0% rejection for BSA and SA , respectively. More importantly, the optimal membrane showed pure water flux of 22.9 LMH/bar as well as 95.9% Na 2 SO 4 rejection. The retention performance of the membrane also exhibited high dye rejections towards MB, NR, MO above 93.6%, especially 98.0%, 98.3% and 99.1% for CV, CR and RB, respectively. Almost complete removal was achieved for natural organic matters (≥99.7%) in the meanwhile. Significantly, long-term performance stability of the APS-integrated membrane was demonstrated during the 120-h continuous filtration of dye, NOM, and salt solution, respectively. This work provides a loose nanofiltration membrane with regulatable structural morphology for water desalination, surface water and wastewater treatment .
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Energy Science & Engineering
·
2019
·Vol. 7
·期 3
·881-889
·
IF 2.893
Yanjie Zhu,Yang Yang,Xiaoguang Wang,Heng Zhong,Fangming Jin
Conversion of CO 2 into useful chemicals has been regarded as one promising method to mitigate the problem of global warming. However, developing an efficient method for CO 2 reduction with facile hydrogen source is still a great challenge. In this study, a new and straightforward method to convert NaHCO 3 , a model compound of CO 2 in basic solution, into formate with 2-pyrrolidone, a model compound of protein-containing biomass, as the reductant on a Pd/C catalyst in water was proposed. Results showed that a formate yield up to 30% from bicarbonate was successfully obtained over the Pd/C catalyst, and the Pd/C catalyst exhibited good catalytic activity and stability. Detailed studies revealed that the propanol generated from the decomposition of 2-pyrrolidone under hydrothermal conditions acted as the actual reductant and hydrogen source for the bicarbonate reduction to formate. Since 2-pyrrolidone can be readily generated from the proteins contained in biomass, the present research provides a promising technology of NaHCO 3 reduction with biomass as the hydrogen source and the renewable energy input, thus it is green, sustainable, and promising for practical application.
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JOURNAL OF RARE EARTHS
·
2018
·
IF 2.524
Yaqian Chen,Huanping Wang,Xiaoting Zhang,Zhen Xiao,Qinghua Yang,Ruoshan Lei,Degang Deng,Lihui Huang,Shiqing Xu
(Y 0.87 La 0.1 Zr 0.03 ) 2 O 3 nanopowders doped with various concentrations of Tm 3+ and Ho 3+ were prepared by the citrate method. The standard cubic Y 2 O 3 phase can be matched in the Tm 3+ /Ho 3+ co-doped (Y 0.87 La 0.1 Zr 0.03 ) 2 O 3 nanopowders. The nanopowders exhibit average particle sizes of 40, 60, 80 and 100 nm after calcinated at 900, 1000, 1100 and 1200 °C, respectively. The energy transfer from Tm 3+ to Ho 3+ and the optimum fluorescence emission around 2 μm were investigated. Results indicate that the emission bands at around 1.86 and 1.95 μm correspond to 3 F 4 → 3 H 6 transition of Tm 3+ and 5 I 7 → 5 I 8 transition of Ho 3+ , respectively. Better spectral properties were achieved in Tm 3+ /Ho 3+ co-doped (Y 0.87 La 0.1 Zr 0.03 ) 2 O 3 nanopowders with the average size of 100 nm obtained at the conditions of the treatment of precursors calcinated at 1200 °C for 2 h doped with 1.5 mol% Tm 3+ and 1 mol% Ho 3+ .
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