ACS Applied Materials & Interfaces
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2021
·
IF 9.229
Jiapin Liu,Yun Huang,Zhixing Zhao,Wenhao Ren,Zhuangzhi Li,Chao Zou,Ling Zhao,Zhaomin Tang,Xing Li,Mingshan Wang,Yuanhua Lin,Haijun Cao
The sodium super ion conductor (NASICON) structure materials are essential for sodium-ion batteries (SIBs) due to their robust crystal structure, excellent ionic conductivity, and flexibility to regulate element and valence. However, the poor electronic conductivity and inferior energy density caused by the nature of these materials have always been obstacles to commercialization. Herein, using yeast as a template to derive NASICON structure Na3MnTi(PO4)3 (NMTP) materials (noted as Yeast@NMTP/C) is presented. The Yeast@NMTP/C material retains the microsphere morphology of the yeast template and not only controls the particle size (around 2 μm) to shorten the Na+ diffusion pathways but also improves the electronic conductivity to optimize the electrochemical kinetics. The Yeast@NMTP/C cathode delivers reversible multielectron redox reactions including Ti4+/3+, Mn3+/2+, and Mn4+/3+ and exhibits a high capacity of 108.5 mAh g–1 with a 79.2% capacity retention after 1000 cycles at a 2C rate. The sodium storage mechanism of Yeast@NMTP/C reveals that the addition of Ti4+/3+ redox plays a key role in improving the Na+ diffusion kinetics, and both solid-solution and two-phase reactions take place during the desodiation and sodiation process. Additionally, the high-rate and long-span cycle performance of Yeast@NMTP/C at 10C is ascribed to contribute to pseudocapacitance.
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ACS Applied Nano Materials
·
2021
·
IF 5.097
Zhentong Han,Yaxin Zhao,Haoji Jiang,Ao Sheng,Hao Li,Hao Jia,Zhiyuan Yun,Zhong Wei,Heyun Wang
The present study eliminated nonselective defects by amending the MOF-based mixed matrix membrane (MMM) interface with (3-aminopropyl) triethoxysilane (APTES) via Schiff’s base reaction. This modification on the ZIF-90 nanoparticle surfaces enhanced the polydimethylsiloxane (PDMS) matrix interaction in the MMMs. Interfacial defects were then minimized through APTES-ZIF-90 nanoparticle surface alkoxy and PDMS chain hydroxyl group cross-linking. Enhanced chemical interactions between the nanoparticles and the polymeric matrix in the APTES-ZIF-90/PDMS MMMs resulted in higher interface compatibility and separation performance than the ZIF-90 nanoparticle MMMs, which ultimately improved its ethanol affinity and hydrophobicity. When the load of APTES-ZIF-90 nanoparticles was 15% and the temperature was 40 °C, the pervaporation performance of APTES-ZIF-90/PDMS MMMs was optimal, the separation factor was 16.8, and the permeation flux was 223 g/(m2·h). Compared with pure PDMS, the separation factor and permeation flux increased by 91 and 67%, respectively. In addition, stable APTES-ZIF-90/PDMS MMM pervaporation performance was observed after an optimal operation time of 120 h. Overall, the present work presented methods to optimize MOF-based MMMs for enhanced interface morphology and separation performance for ethanol recovery.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2021
·
IF 5.816
Haoqiang Sheng,Xiaobin Huang,Yuan Ji,Zhengchuang Zhao,Zhijia Chen,Hong Liu
Scramjet engines play a vital role in hypersonic vehicles , but they suffer from the ignition issue due to the low reactivity of hydrocarbon fuel when flying at low flight Mach numbers . In this work, the low-temperature ignition performance of multi-component kerosene was significantly improved by only adding 3% borane-dimethyl sulfide (BDMS), resulting in the low-temperature ignition reducing greatly from 620 to 160 °C. This indicates that BDMS was an effective activator for multi-component kerosene. To analyze the low-temperature efficient activation mechanism of multi-component kerosene, paraxylene, ethylcyclohexane, n -decane, and n -tetradecane (each with added 3% BDMS) were studied as they are essential components in kerosene, respectively. The low-temperature ignition performance and the ignition process of n-alkane were significantly improved and changed for a single component of hydrocarbon. There was a synergistic promotion effect for multi-component hydrocarbons with the addition of activator BDMS. BDMS could significantly improve the low-temperature ignition performance and oxidation of ethylcychohexane in the presence of n -tetradecane. The addition of paraxylene promoted the evaporation of the hybrid fuel of n -tetradecane/ethylcyclohexane. The results obtained from this study could help to gain a better understanding of the low-temperature ignition of multi-component kerosene and provide an effective method to solve the scramjet ignition problem at low flight Mach numbers.
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Polymers
·
2020
·Vol. 12
·期 11
·2720
·
IF 3.426
Mengdi Wang,Qin Yao,Sanyin Qu,Yanling Chen,Hui Li,Lidong Chen
Single-walled carbon nanotubes (SWNTs) have been widely used as leading additives for improving the thermoelectric properties of organic materials, due to their unique structure and excellent electronic transport properties. However, the as-synthesized SWNTs are mixtures (mix-SWNT) of semiconducting (sc-SWNT) and metallic (met-SWNT) carbon nanotubes. The significantly different surface character and transport behavior of sc-SWNT and met-SWNT frequently raise the difficulty of modifying microstructures, and tuning transport properties of SWNTs/organic composites, when using mix-SWNTs as dispersion phase. Herein, we prepared high quality sc-SWNTs/rr-P3DDT composite film by presorting pure sc-SWNT from the raw mix-SWNTs using regioregular poly(3-dodecylthiophene) (rr-P3DDT). Both the smoothness and compactness of sc-SWNTs/rr-P3DDT are great improved, as compared with the mix-SWNTs/rr-P3DDT films, and the sc-SWNTs are well-dispersed and uniformly wrapped by rr-P3DDT with diameter less than 50 nm. The significantly enhanced Seebeck coefficients and power factors are obtained in the sc-SWNT/rr-P3DDT samples. As the result, the maximum power factor of 60 μW/mK2in 50 wt% sc-SWNTs sample is 70% higher than that of mix-SWNTs/P3DDT sample. This work reveals the effectiveness of pure semiconductor SWNTs as fillers to optimize the thermoelectric properties of CNT/polymer nano-composites.Keywords:thermoelectric;semiconducting SWNT;poly(3-dodecylthiophene);composite
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ANALYTICAL SCIENCES
·
2020
·Vol. 36
·期 10
·1203-1209
·
IF 2.049
Wei ZENG,Dongyan HUANG,Gangbing ZHU,Baohe LV,Yinhui YI
In this work, by functionalizing MoS2 quantum dot with 3-aminobenzeneboronic acid, a novel multifunctional quantum dot (denoted as B-MoS2 QD) was obtained and used successfully for a fluorescence nanoprobe for detecting o-dihydroxybenzene (o-DHB). Transmission electron microscopy, fluorescence spectrum, UV-vis spectrum and fluorescence lifetime were used to investigate the prepared nanoprobe. The results show that the B-MoS2 QD nanoprobe can exhibit strong fluorescence and excellent light fastness owing to the coupled effect from the MoS2 QDs and boronic acid; interestingly, the vicinal diols structure from its surface can bridge covalently with o-DHB, resulting in the fluorescence quenching of B-MoS2 QDs and selective recognition toward o-DHB. With the increasing of o-DHB concentration, the nanoprobe fluorescence would gradually decrease. By measuring the fluorescence intensity of B-MoS2 QDs, a wide linear range from 0.1 to 200.0 μM with a low detection limit of 0.025 μM was obtained for o-DHB analysis; meanwhile, this fluorescence nanoprobe possesses excellent selectivity for the selective detection of o-DHB from its analogues.
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DRUG METABOLISM AND DISPOSITION
·
2020
·Vol. 48
·期 10
·1074-1083
·
IF 3.231
Yingchun Chen,Cui Li,Yaodong Yi,Weijuan Du,Huidi Jiang,Su Zeng,Hui Zhou
Dehydrocorydaline (DHC), one of the main active components of Corydalis yanhusuo, is an important remedy for the treatment of coronary heart disease. Our previous study revealed a higher unbound concentration of DHC in the heart than plasma of mice after oral administration of C. yanhusuo extract or DHC, but the underlying uptake mechanism remains unelucidated. In our investigations, we studied the transport mechanism of DHC in transgenic cells, primary neonatal rat cardiomyocytes, and animal experiments. Using quantitative real-time polymerase chain reaction and Western blotting, we found that uptake transporters expressed in the mouse heart include organic cation transporter 1/3 (OCT1/3) and carnitine/organic cation transporter 1/2 (OCTN1/2). The accumulation experiments in transfected cells showed that DHC was a substrate of OCT1 and OCT3, with Km of 11.29 ± 3.3 and 8.96 ± 3.7 μM, respectively, but not a substrate of OCTN1/2. Additionally, a higher efflux level (1.71-fold of MDCK-mock) of DHC was observed in MDCK-MDR1 cells than in MDCK-mock cells. Therefore, DHC is a weak substrate for MDR1. Studies using primary neonatal rat cardiomyocytes showed that OCT1/3 inhibitors (quinidine, decynium-22, and levo-tetrahydropalmatine) prevented the accumulation of DHC, whereas OCTN2 inhibitors (mildronate and l-carnitine) did not affect its accumulation. Moreover, the coadministration of OCT1/3 inhibitors (levo-tetrahydropalmatine, THP) decreased the concentration of DHC in the mouse heart. Based on these findings, DHC may be accumulated partly by OCT1/3 transporters and excreted by MDR1 in the heart. THP could alter the distribution of DHC in the mouse heart.
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ANALYST
·
2020
·Vol. 146
·期 1
·75-84
·
IF 3.978
Lei Li,Jiancheng Yu,Chengyi Xie,Chenlu Wang,Pengfei Guan,Jun Jack Hu,Keqi Tang
3-Pyridinylboronate, a zwitterionic boronic acid, displayed effective in situ ESI for reversible covalent tagging of saccharides in both cation and anion modes. The ion mobilities of thus-generated ions were examined with the Bruker timsTOF fleX instrument. Nine disaccharides were examined using this method. They have identical mass-to-charge ratios, differing only in monomer compositions, regio-linkages, and anomeric configurations (α or β). The IMS separations of the disaccharides from this method were compared with those from sodium adducts reported in the literature. The differentiation effects of this method on the disaccharide isomers were increased on average by an order of magnitude. Using this method, all the pairs of disaccharides selected from nine isomers were completely identified by comparing the mobility spectra of single-tagged and double-tagged ions.
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FOOD CHEMISTRY
·
2020
·
IF 6.306
Pingling Zhang,Shuang Liu,Zhengang Zhao,Lijun You,Mark D. Harrison,Zhanying Zhang
Cyanidin-3-glucoside is a major anthocyanin in legumes, black rice, and purple potato, and has anti-inflammatory and antioxidant properties. In the present study, the effect of acylation on cyanidin-3-glucoside lipophilicity, stability, and antioxidant capacity was investigated. Cyanidin-3-glucoside was enzymatically acylated through transesterification with fatty acid esters to produce three monoacylated cyanidin-3-glucoside esters, cyanidin-3-(6″- n- octanoyl)-glucoside, cyanidin-3-(6″-lauroyl)-glucoside, and cyanidin-3-(6″-myristoyl)-glucoside. Cyanidin-3-(6″- n- octanoyl)-glucoside had the highest thermostability and photostability of the three cyanidin-3-glucoside esters. While the in vitro antioxidant activity of cyanidin-3-(6″- n- octanoyl)-glucoside was 7.5%–14.3% lower than that of cyanidin-3-glucoside ( p < 0.05), its cellular antioxidant activity increased by 33.3% ( p < 0.05). Further, while cyanidin-3-(6″-lauroyl)-glucoside had lower stability and in vitro antioxidant activity than that of cyanidin-3-(6″- n- octanoyl)-glucoside, its cellular antioxidant capacity was 125.9% and 69.4% higher than cyanidin-3-glucoside and cyanidin-3-(6″- n- octanoyl)-glucoside, respectively ( p < 0.05). This study demonstrated that transesterification can be used to improve the stability and in vivo antioxidant activity of cyanidin-3-glucoside.
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Materials Science & Engineering C-Materials for Biological Applications
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2020
·
IF 5.88
Yufei Tang,Lei Chen,Zihao Duan,Kang Zhao,Zixiang Wu
Barium titanate (BaTiO 3 ) has been used as a bone implant material because of its piezoelectric properties and the ability to promote cell growth when combined with hydroxyapatite. However, the brittleness of BaTiO 3 inhibits its use as a bone replacement material at load-bearing sites, and the reduction of BaTiO 3 content in the composite reduces its piezoelectric effect on bone growth. In this study, we explored a preparation method, which included directional freeze casting and self-solidification of bone cement, to obtain 1-3-type BaTiO 3 /PMMA bio-piezoelectric composites with a lamellar structure. The lamellar BaTiO 3 layer through the composite from the bottom to the top significantly improved the piezoelectric properties of the composite. In addition, the dendritic ceramic bridges on the BaTiO 3 pore walls can improve the compressive strength and elastic modulus of BaTiO 3 /PMMA bio-piezoelectric composites with a lamellar structure. More importantly, it was found that polarized lamellar BaTiO 3 could induce osteoblasts to grow in the direction of the BaTiO 3 layers. When the width of the BaTiO 3 layer was in the range of 8–21 μm, osteoblasts along the BaTiO 3 layer showed well growth, which can be of great value for the production of biomimetic bone units.
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Journal of Environmental Chemical Engineering
·
2020
·
IF 4.3
Yi Cheng,Jilin Zhang
Excessive phosphate in wastewater can cause eutrophication of water body, which will worsen the ecological environment and threaten human health and biological life safety. Adsorption of phosphate is the most effective way to remove phosphate, and efficient adsorbent is the key. Amorphous La(OH) 3 has been deemed as a potential phosphate adsorbent on account of high adsorption capacity and environmentally friendly property. However, it also shows some disadvantages such as easy agglomeration, poor water dispersion. In this study, UiO-66-NH 2 was used as carrier to load amorphous lanthanum hydroxide as an adsorbent for phosphate removal. The adsorbent (UiO-66-NH 2 @La(OH) 3 , ULCs) has good water dispersibility and it is easy to be separated and recovered. At the same time, the maximum phosphate adsorption capacity can reach 140.7 mg P/g. The adsorption process accords with pseudo second order kinetic model and Freundlich isotherm model. The thermodynamic results showed that the adsorption process was spontaneous and endothermic. In addition, in the presence of coexisting anions (such as Cl − , SO 4 2− , NO 3 − ), it also exhibited high selectivity and phosphate removal efficiency. Meanwhile, the adsorption capacity keeps at a high level in the range of pH 3–11. By the merit of above-mentioned properties, the prepared material is expected to be an ideal candidate for phosphate removal from contaminated water.
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JOURNAL OF MOLECULAR LIQUIDS
·
2021
·
IF 6.165
Miao Zhu,Xing Hu,Ying Zhang,Junhui Pan,Guowen Zhang
3-Indoleacetic acid (IAA), a broad-spectrum and efficient plant growth regulator , has been widely used in crop production. However, the accumulation of IAA in human body is potentially harmful to the human health. In this work, the binding properties of calf thymus DNA (ctDNA) with IAA and the impacts of IAA on ctDNA conformation were investigated through modern analysis techniques, including multispectroscopic methods, electrophoresis analysis and molecular docking . The results of fluorescence spectra analysis showed that ctDNA can cause significant fluorescence quenching of IAA in a static manner. The binding process was spontaneous and exothermic, which was mainly driven by van der Waals forces , and the binding constant was 5.58 × 10 3 L mol −1 at 25 °C. IAA bound to ctDNA via groove mode as revealed through iodine ion quenching assays, viscosity and melting temperature measurements. The molecular docking and Fourier transform infrared spectra intuitively displayed that IAA tended to bind to the G−C base-pairs of the minor grooves of ctDNA, but this binding did not lead to significant damage of DNA which was confirmed by the circular dichroism and gel electrophoresis analyses. These findings may provide novel insights into the toxic mechanism of IAA.
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Advanced Optical Materials
·
2021
·Vol. 9
·期 8
·2002075
·
IF 9.926
Qin Wang,Mengfeifei Jin,Ya Chen,Yi Zhao,Yao Tong,Ziyao He,Xiaojuan Liang,Weidong Xiang
Currently, high optical purity, perfect stability, and high photoluminescence quantum yield (PLQY) are very important, being the key to obtain high-quality luminescent materials. The research of perovskite nanocrystals (NCs) as optical materials is in full swing. Nevertheless, the low PLQY value, especially for the red-emitting perovskite NCs, is a main obstacle to applications in display. This work reports the optimized components to synthesize CsPb(Br/I) 3 NCs glasses whose PLQY achieves a big boost from 15.4% to ≈ 60% for the first time. Furthermore, the specimens exhibit exceptional tolerance to water and thermal and hence contribute to applicability in high-performance light-emitting diode (LED) and 3D printing. By combining CsPb(Br/I) 3 NCs glass powder and yttrium aluminum garnet (YAG):Ce phosphor with blue chips, the assembled white LEDs reach a high luminous efficiency at 113.0 lm W −1 . The resulting high PLQY is to the benefit of a substantial step toward the practical application of inorganic perovskite materials in the fields of optoelectronic devices and additive manufacturing.
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