CHEMICAL ENGINEERING JOURNAL
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2021
·
IF 13.273
Rupeng Zhang,Can Cui,Ruinan Li,Yaqi Li,Chunyu Du,Yunzhi Gao,Hua Huo,Yulin Ma,Pengjian Zuo,Geping Yin
Due to the good safety and high energy density , rechargeable Mg-metal batteries (RMMBs) have been regarded as a potential competitor of Li-metal batteries (LMBs). However, the Mg(TFSI) 2 -based conventional electrolytes will cause large overpotential in reversible plating/stripping attributed to the high ion transport impedance of the electrolyte decomposition products. Here, an artificial interphase composed of amorphous (a-) MgCl 2 @polymer on the Mg-metal surface is prepared by in-situ chemical reaction of metallic Mg with H 3 PO 4 and SiCl 4 in sequence, and can effectively inhibit the electrolyte decomposition and facilitate Mg 2+ transport, which plays the role of solid electrolyte interface (SEI) on Mg anode. The Mg-Mg symmetrical cell with modified Mg electrode exhibits lower overpotential (~0.25 V) and interfacial impedance than bare Mg electrode in 0.5 M Mg(TFSI) 2 /DME electrolyte. The voltage hysteresis in the Mg-S and Mg-Mo 6 S 8 batteries with the modified Mg anode is greatly improved compared to bare Mg anode. This work provides a new idea for future applications of passivation-free Mg-metal anode technology in the MMBs based on conventional electrolytes.
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FLUID PHASE EQUILIBRIA
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2021
·
IF 2.775
Jing Fan,Peng Liu,Zhiqiang Gao,Fenhong Song
As renewable clean bio-fuels, furan fuels, which are usually named the second generation biodiesel, have attracted the extensive attention from the academic world. This work, the experiment research on the thermal conductivity of three furan fuels (Tetrahydrofuran, 2-Methylfuran, 2,5-Dimethylfuran) in the liquid phase has been completed, and the experimental thermal conductivity data of three chemicals are reported under the pressure up to 15 MPa for the first time. The experimental results had a combined expanded uncertainty of better than ± 2.0 % (in the 0.95 confidence level).
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JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2021
·Vol. 168
·期 9
·090545
·
IF 4.316
Jia Wen,Zhenying Chen,Sheng Han,Jinhui Zhu,Changchun Ke,Emmanuel Kymakis,Xiaodong Zhuang
Poly(ethylene oxide) (PEO) is regarded as an attractive solid-state electrolyte in lithium-ion batteries (LIBs). However, relatively low ionic conductivity of pristine PEO is a critical bottleneck to boost high-performance solid-state LIBs. Herein, poly(2-aminoazulene) (PAAz) was synthesized using the oxidation polymerization strategy and acted as a polymeric filler in the fabrication of PEO−PAAz composite electrolyte. Compared with PEO electrolyte, the composite electrolyte had a better ionic conductivity (9.27 × 10−6 vs 6.47 × 10−5 S cm−1 at 30 °C), Li+ transference number (0.21 vs 0.51), and suppression of Li dendrites. Consequently, the PEO−PAAz electrolyte paired Li/LiFePO4 cell had a high capacity (156 mAh g−1 at 0.5 C, 1 C = 170 mA g−1) and stability (only 8% capacity loss after 300 cycles); these are better than those of the PEO-based cell (132 mAh g−1, 45% capacity loss). In addition, the PEO−PAAz-based cell could run for 1200 cycles with 60% capacity retention at 1 C. This study provides both a new organic filler for PEO-based solid-state LIBs and a method of improving the performance of solid-state LIBs, especially in terms of a long lifetime.
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CHEMICAL ENGINEERING SCIENCE
·
2019
·
IF 3.372
Yuning Tang,Sa Wang,Xin Zhou,Ying Wu,Shikai Xian,Zhong Li
A facile and efficient room-temperature synthesis approach was proposed to prepare MOF material Cu(Qc) 2 (henceforth called RT-Cu(Qc) 2 ) with ultramicropores. RT-Cu(Qc) 2 was successfully synthesized at room-temperature by means of (Zn, Cu) hydroxyl double salt as intermediate within 1–12 h. The resulting RT-Cu(Qc) 2 exhibited excellent water vapor stability and its C 2 H 6 uptake reached 2.19 mmol/g at 288 K and 1 bar. Its C 2 H 6 /C 2 H 4 and C 2 H 6 /CH 4 uptake ratio at 298 K and 1 bar were up to 3.70 and 22.67, superior to benchmark MAF-49, Cu(Qc) 2 and ZIF-7. Its IAST-predicted C 2 H 6 /C 2 H 4 and C 2 H 6 /CH 4 selectivity reached 4.1 (1:1 v:v) and 35.9 (1:9 v:v) at 288 K and 1 bar, higher than most of ethane-capturing MOFs. Molecular simulation revealed well-defined host–guest match between Cu(Qc) 2 and ethane. Fixed bed experiments confirmed that ethane/ethylene or ethane/methane mixtures can be completely separated using RT-Cu(Qc) 2 . RT-Cu(Qc) 2 has great potential for separation of ethane/ethylene and the recovery of ethane from natural gas.
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JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2019
·
IF 3.571
Qixing Nie,Mengmeng Xing,Haihong Chen,Jielun Hu,Shaoping Nie
Type 2 diabetes (T2D) is a pandemic disease chiefly characterized by hyperglycemia. In this study, the combination of serum lipidomic and metabolomic approach was employed to investigate the effect of arabinoxylan on type 2 diabetic rats and identify the critical biomarkers of T2D. Metabolomics analysis revealed that branched-chain amino acids, 12α-hydroxylated bile acids, ketone bodies, and several short- and long-chain acylcarnitines were significantly increased in T2D, whereas lysophosphatidylcholines (LPCs) were significantly decreased. Lipidomics analysis indicated T2D-related dyslipidemia was mainly associated with the increased levels of acetylcarnitine, free fatty acids (FFA), diacylglycerols, triacylglycerols, and cholesteryl esters and the decreased levels of some unsaturated phosphatidylcholines (less than 22 carbons). These variations indicated the disturbed amino acid and lipid metabolism in T2D, and the accumulation of incompletely oxidized lipid species might eventually contribute to impaired insulin action and glucose homeostasis. Arabinoxylan treatment decreased the concentrations of 12α-hydroxylated bile acids, carnitines, and FFAs and increased the levels of LPCs. The improved bile acid and lipid metabolism by arabinoxylan might be involved in the alleviation of hypercholesterolemia and hyperlipidemia in T2D.
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PubMed
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2019
·
IF 14.229
Wenhao Zhang,Yuanhao Tang,Liangmin Yu,Xin-Yao Yu
Nickel-based metal oxides/hydroxides are promising electrocatalysts for oxygen evolution reaction. However, their electrocatalytic activity for hydrogen evolution reaction (HER) is very poor. Herein, taking Mo-incorporated nickel hydroxide (Mo-Ni(OH) 2 ) as an example, a facile, time-efficient, and low-temperature H 2 /N 2 plasma activation strategy is developed to activate the HER performance by constructing heterostructure. This kind of heterostructure is composed of metal, metal alloy, metal nitride , and oxygen vacancy-riched metal hydroxide with more exposed catalytically active sites, enhanced mass activity, and accelerated electron transport. The optimized plasma-activated Mo-Ni(OH) 2 (P-Mo-Ni(OH) 2 ) manifests superior HER performance to pristine Mo-Ni(OH) 2 and even comparable to the benchmark Pt/C catalyst in alkaline solution. Moreover, when assembling a two-electrode urea-assisted water electrolysis system by using P-Mo-Ni(OH) 2 as both cathode and anode, the assembled cell only need a small voltage of 1.36 V to achieve a current density of 10 mA cm −2 and exhibits extremely stable catalytic performance up to 1000 h.
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Frontiers in Chemistry
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2020
·
IF 3.693
Zhou Xinfeng,Qi Weihong,Yin Kai,Zhang Ning,Gong Shen,Li Zhou,Li Yejun
Highly efficient and low-cost non-noble metal based electrocatalysts for oxygen evolution reaction (OER) have attracted more and more attention in recent years. However, the current research has been focused on the construction of novel OER electrocatalysts themselves, little attention has been paid to the modification of the substrates. In this work, a different strategy is proposed via laser ablation to fabricate the Cu foams with rich micro/nano-structures as OER substrates. Later, the precipitation conversion method was utilized to grow cobalt hydroxide on the laser fabricated Cu foams. The as-produced Cu/Cu oxides/Co(OH)2 electrocatalysts exhibit high OER activity in 1 M KOH, requiring an overpotential of only 259 mV at a current density of 50 mA cm−2 with excellent mild-term durability. The improved catalytic performance of the prepared samples can be attributed to the increased surface area, rich active sites, and the superhydrophilicity of the laser produced micro/nano-structures.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2019
·Vol. 30
·期 20
·18617-18625
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IF 2.195
Meng Zuchao,Li Mao,Liu Xiang,Lei Zigang
A new hydrazine electrochemical sensor was fabricated based on in situ synthesis of Cu 3 (BTC) 2 /GO nanocomposite. Cu 3 (BTC) 2 /GO composite were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and Fourier transform infrared spectrometry (FT-IR). Meanwhile, the electrochemical behaviors of hydrazine on the Cu 3 (BTC) 2 /GO/GCE were studied by cyclic voltammetry and linear sweep voltammetry. Under the optimized conditions, Cu 3 (BTC) 2 /GO/GCE had enhanced electrocatalytic activity toward hydrazine due to synergic catalytic effect between Cu 3 (BTC) 2 and GO. The electrochemical sensor exhibited a wider linear range (1.0 µM to 5000 µM) and a lower detection limit (0.5 μM) as well as good reproducibility and stability. The proposed sensor has also been used for the determination of hydrazine in tap water with satisfactory results.
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FEBS Journal
·
2019
·Vol. 287
·期 8
·1666-1680
·
IF 4.739
Chen-Yu Zhang,Jia-Xi Duan,Hui-Hui Yang,Chen-Chen Sun,Wen-Jing Zhong,Jia-Hao Tao,Xin-Xin Guan,Hui-Ling Jiang,Bruce D. Hammock,Sung Hee Hwang,Yong Zhou,Cha-Xiang Guan
Pulmonary fibrosis (PF) is a senescence-associated disease with poor prognosis. Currently, there is no effective therapeutic strategy for preventing and treating the disease process. Mounting evidence suggests that arachidonic acid (ARA) metabolites are involved in the pathogenesis of various fibrosis. However, the relationship between the metabolism of ARA and PF is still elusive. In this study, we observed a disorder in the cyclooxygenase-2/cytochrome P450 (COX-2/CYP) metabolism of ARA in the lungs of PF mice induced by bleomycin (BLM). Therefore, we aimed to explore the role of COX-2/CYP-derived ARA metabolic disorders in PF. PTUPB, a dual COX-2 and soluble epoxide hydrolase (sEH) inhibitor, was used to restore the balance of COX-2/CYP metabolism. sEH is an enzyme hydrolyzing epoxyeicosatrienoic acids derived from ARA by CYP. We found that PTUPB alleviated the pathological changes in lung tissue and collagen deposition, as well as reduced senescence marker molecules (p16 Ink4a and p53-p21 Waf1/Cip1 ) in the lungs of mice treated by BLM. In vitro , we found that PTUPB pretreatment remarkably reduced the expression of senescence-related molecules in the alveolar epithelial cells (AECs) induced by BLM. In conclusion, our study supports the notion that the COX-2/CYP-derived ARA metabolic disorders may be a potential therapeutic target for PF via inhibiting the cellular senescence in AECs.
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PubMed
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Biomaterials Science
·
2019
·Vol. 8
·期 5
·1290-1297
·
IF 5.251
Xiao-Xiao Shi,Wei-Min Miao,Di-Wen Pang,Jia-Si Wu,Qi-Song Tong,Jia-Xian Li,Jia-Qi Luo,Wen-Yu Li,Jin-Zhi Du,Jun Wang
Primary central nervous system lymphoma (PCNSL) is a rare brain tumor. Its therapeutic efficacy is much lower than that of traditional lymphoma, largely due to the presence of the blood–brain barrier (BBB), which hinders the effective drug delivery and deposition on the disease site. Angiopep-2 (ANG) can target low-density lipoprotein receptor-related protein (LRP) on the surface of brain capillary endothelial cells (BCECs) and exhibits high BBB transport capability. In this study, we designed an ANG conjugated poly(ethylene glycol)-b-poly(ε-caprolactone) (PEG-b-PCL) (APP) nanoparticle to deliver doxorubicin (DOX) for the treatment of PCNSL. Our data indicated that the targeted APP nanoparticles showed significantly increased cellular uptake by BCECs compared with the control nanoparticles. In the intracranial SU-DHL-2-LUC lymphoma xenograft mice model, APP enhanced drug deposition in tumor tissues, and DOX-loaded APP (APP@DOX) exhibited a better therapeutic effect than free DOX and nontargeted PP@DOX, which significantly prolonged the survival time of mice.
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International Journal of Peptide Research and Therapeutics
·
2019
·Vol. 26
·期 4
·1839-1846
·
IF 1.219
Liu Lei,Liu Jie,Cui Qi,Jia Bo-Yan,Pei Zhi-Hua,Odah Kokou Ayefounin,Wang Yi-Ming,Dong Wen-Long,Kong Ling-Cong,Ma Hong-Xia
Proline-rich antimicrobial peptides (PR-AMPs) have attracted much interest as they target Gram-negative and do not act by lytic mechanisms. In this study, a novel hybrid peptide OM19R was designed based on the Oncocin and MDAP-2. OM19R showed specific and improved potency against Escherichia coli ( E. coli ), Salmonella and Shigella standard strains compared to parental peptides. The minimum inhibitory concentrations (MICs) ranged from 1 to 2 μM. However, the activity against Klebsiella pneumoniae ( K. pneumoniae ) was inhibited. The dependence of the SbmA protein for OM19R activity was also studied by a gene-knockout strain. The confocal laser scanning microscopy further revealed that OM19R could rapidly penetrate into E. coli cells without membrane damage. In summary, the hybrid peptide OM19R is a strong cell-selective antibacterial peptide and a promising specific antibacterial agent.
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INTERNATIONAL JOURNAL OF CHEMICAL KINETICS
·
2019
·Vol. 51
·期 4
·258-265
·
IF 1.417
Zhongyu Du,Siyu Duan,Mingfang Ma,Xiangyu Xu,Zhenquan Li,Lingdong Kong,Jun Liu
The rate constants of two redox reactions and in the critical solution of 2-butoxyethanol and water have been measured by using the UV spectrophotometry at the initial reaction stage. It was found that the rate constants at various temperatures for two reactions were well described by the Arrhenius equation in the noncritical region. The critical slowing down effect was detected in the critical region. The critical slowing down exponents were determined to be 0.044 ± 0.004 and 0.046 ± 0.005 for reactions and , respectively. The values of the critical slowing down exponents showed that only dynamic critical slowing down effect, and no thermodynamic singularity could be observed for the two reactions.
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