Journal of Energetic Materials
·
2019
·
IF 1.649
Qi Jia,Xueyuan Bai,Shaoyong Zhu,Xiong Cao,Peng Deng,Lishuang Hu
Nano (H2dabco)[K(ClO4)3] (DAP-2) were successfully prepared via the milling method. The morphology and structure of the as-obtained sample were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR). The results showed the nano DAP-2 with nearly spherical morphologies have a narrow particle size distribution ranged from 1μm to 2μm. The thermal decomposition properties were investigated by thermogravimetric-differential scanning calorimeter (TG-DSC). The exothermal peak of nano DAP-2 thermal decomposition is 384.5°C decreased by 6.7°C compared with raw DAP-2 (391.2°C). And the apparent activation energy (Ea) of nano DAP-2 was calculated as 173.346 kJ mol−1 by Kissinger equation, which is lower than raw DAP-2 (177.699 kJ·mol−1). Sensitivity study showed that the nano DAP-2 (H50: 60.63 cm) exhibited lower impact sensitivity than raw DAP-2 (H50: 36.79 cm). Therefore, this work provides a simple and effective way to improve the thermal decomposition properties and safety performance of molecular perovskite energetic materials.
研究领域:
材料科学
·
化学
✓ 已验证
DOI
高影响因子
SOLID STATE IONICS
·
2018
·
IF 2.751
Zhen Jiang,Lu Liu,Yuehua Li,Jing Zhu,Chuanchang Li,Zhangxing He,Wei Meng,Yingqiao Jiang,Lei Dai,Ling Wang
NaTi 2 (PO 4 ) 3 /C (NC) composites decorated by carbon nanotubes (CNTs) were prepared via a sol-gel way, and employed as anode in aqueous lithium ion batteries . An effective conductive network was obtained by decoration of CNTs, which can interconnect NC particles. CNTs decoration has no obvious effect on lattice structure for NaTi 2 (PO 4 ) 3 , and can enhance electrochemical properties for NC. Moreover, NC decorated by CNTs with optimal content of 8.8% (NC-CNTs-10) exhibits the highest electrochemical properties. NC-CNTs-10 delivers the discharge capacity of 96.4, 93.7, and 74.2 mAh g −1 at 0.5, 3, and 15C, respectively, with increase of 2.7, 15.1, and 38.2 mAh g −1 compared with NC. In addition, NC-CNTs-10 shows excellent cycling performance. Capacity retention for NC-CNTs-10 can reach 91.2% after 1000 cycles at a rate of 4C, 16.7% larger than that of pristine NC. Our study reveals that CNTs decoration is a simple way to raise electrochemical properties for NaTi 2 (PO 4 ) 3 /C in aqueous lithium ion batteries .
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
CHEMICAL PHYSICS LETTERS
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2020
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IF 2.029
Xingkun Zhu,Nan Zou,Hongchang Pang,Peng Tian,Guiling Ning
A high-efficient composite of flame retardant (CFR) composed of an aluminum hydroxide (ATH) core and an aluminum phosphate (AP) flower-like shell was synthesized by an in-situ growth method, which is low cost and easy-to-handle. It has been demonstrated that flame retardancy and smoke suppression of (ethylene-vinyl acetate) EVA/CFR were enhanced compared to EVA/ATH attributed to the high-efficiency heat barrier and gas isolation of ceramic char residues mainly composed of Al 2 O 3 porcelain agents and AlPO 4 sintering aids. Thus, the novel hierarchical core-shell AlPO 4 @Al(OH) 3 might supersede the ATH as flame retardants.
研究领域:
材料科学
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化学工程
✓ 已验证
DOI
高影响因子
FOOD CHEMISTRY
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2014
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IF 3.259
Jinbing Li,Xiaoyong Wang
Novel thermally-induced BSA/ι-carrageenan particles are used as a protective carrier for (−)-epigallocatechin-3-gallate (EGCG). The addition of EGCG to BSA/ι-carrageenan particles can highly quench the intrinsic fluorescence of BSA , which is explained in terms of the binding of EGCG to the hydrophobic pockets of BSA mainly through the hydrophobic force. According to the double logarithm equation, the binding constant is determined as 1.1 × 10 8 M −1 for the binding of EGCG with BSA/ι-carrageenan particles. The high binding affinity is ascribed to both the molecular structure of EGCG and the partial unfolding state of BSA in BSA/ι-carrageenan particles. The circular dichroism spectra and calculated α-helix of BSA suggest that the bound EGCG leads to a more random secondary structure of BSA. Furthermore, BSA/ι-carrageenan particles are found to be superior to native BSA and pure BSA particles for improving the stability and radical scavenging activity of EGCG.
研究领域:
食品科学
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生物化学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2018
·Vol. 19
·期 2
·443
·
IF 3.687
Mengsha Li,Rui Guo,Fei Yu,Xu Chen,Haiyan Zhao,Huixin Li,Jun Wu
Arthrobacter pascensZZ21 is a plant-beneficial, fluoranthene-degrading bacterial strain found in the rhizosphere. The production of the phytohormone indole-3-aectic acid (IAA) by ZZ21 is thought to contribute to its ability to promote plant growth and remediate fluoranthene-contaminated soil. Using genome-wide analysis combined with metabolomic and high-performance liquid chromatography-mass spectrometry (HPLC-MS) analyses, we characterized the potential IAA biosynthesis pathways inA. pascensZZ21. IAA production increased 4.5-fold in the presence of 200 mg·L−1tryptophan in the culture medium. The transcript levels ofprrandaldH, genes which were predicted to encode aldehyde dehydrogenases, were significantly upregulated in response to exogenous tryptophan. Additionally, metabolomic analysis identified the intermediates indole-3-acetamide (IAM), indole-3-pyruvic acid (IPyA), and the enzymatic reduction product of the latter, indole-3-lactic acid (ILA), among the metabolites of ZZ21, and subsequently also IAM, ILA, and indole-3-ethanol (TOL), which is the enzymatic reduction product of indole-3-acetaldehyde, by HPLC-MS. These results suggest that the tryptophan-dependent IAM and IPyA pathways function in ZZ21.Keywords:Arthrobacter;IAA biosynthesis pathway;genome-wide analysis;metabolomics;HPLC-MS
研究领域:
植物学
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微生物学
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环境科学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF CHEMICAL ECOLOGY
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2020
·Vol. 46
·期 4
·363-377
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IF 2.117
Waris Muhammad Irfan,Younas Aneela,Ameen Asif,Rasool Fatima,Wang Man-Qun
Insects have evolved highly sensitive olfactory sensory systems to detect plant hosts and mates, with plant volatiles playing an important role in informing insect behavior. Chemosensory proteins (CSPs) are thought to play a key role in this process, but in this respect, there is limited information on brown planthopper Nilaparvata lugens , one of the most destructive pests of rice. To expand our understanding of CSP function in N. lugens we explored expression profiles and binding characteristics of NlugCSP3. The ligands with higher binding affinity were also validated by molecular docking and behavioral assays. NlugCSP3 mRNA was expressed at relatively higher levels in antennae and abdomen of 3-day-old unmated macropterous males as well as in antennae of 3-day mated macropterous and brachypterous females. Fluorescence competitive binding assays revealed that 5 out of 25 candidate volatiles are strong binders (Ki < 10 μM). Behavioral assays revealed that nonadecane and 2-tridecanone, which have high binding affinities in fluorescence competition-binding assays, displayed strong attractiveness to N. lugens . Pursuing this further, molecular docking analysis identified key amino acid residues involved in binding volatile compounds. Overall, our data provide a base for further investigation of the potential physiological functions of CSP3 in Nilaparvata lugens , and extend the function of NlugCSP3 in chemoreception of N. lugens.
研究领域:
昆虫学
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生物化学
·
分子生物学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF ENDODONTICS
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2022
·
IF 4.422
Qianli Zhang,Chongyang Yuan,Li Liu,Shipeng Wen,Xiaoyan Wang
Introduction In this study, we generated a 3-dimensional (3D) collagen fibrous scaffold for potential pulp regeneration and investigated the influence of various pore sizes of these scaffolds on proliferation, odontoblastic differentiation of human dental pulp cells (hDPCs), and subsequent tissue formation during pulp regeneration. Methods Electrospinning followed by freeze-drying was used to fabricate 3D fibrous collagen scaffolds. hDPCs were cultured on these scaffolds. Cell growth was detected by a Cell Counting Kit-8 assay and observed via scanning electron microscopy. Odontogenic genes and protein expression were analyzed by real-time reverse transcription polymerase chain reaction and immunofluorescence staining. The formation of mineralized nodules was tested by von Kossa staining, scanning electron microscopy, and energy-dispersive X-ray microanalysis. Subcutaneous transplantation of the seeded scaffold/tooth fragments into nude mice was performed to observe tissue formation for pulp regeneration. Results Collagen 3D fibrous scaffolds with 3 distinct mean pore sizes (approximately 20 μm, 65 μm, and 145 μm) were fabricated, which showed good biocompatibility and bioactivity. Scaffolds with larger mean pore sizes of 65 and 145 μm improved hDPC ingrowth and proliferation, with the 65-μm scaffold group presenting the highest level of odontogenic gene expression ( DSPP and DMP-1 ), protein expression (DMP-1), mineralized area ratio, and vascular pulplike tissue formation after 6 weeks of subcutaneous implantation. Conclusions The pore size of collagen 3D fibrous scaffolds significantly affected cell adhesion , proliferation, odontoblastic differentiation, and tissue rehabilitation. Scaffolds with a mean pore size of 65 μm presented superior results and could be an alternative for pulp regeneration.
研究领域:
生物材料
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组织工程
·
牙科研究
·
细胞生物学
✓ 已验证
DOI
PubMed
高影响因子
Data in Brief
·
2015
·
IF 0
Xinghao Lin,Yanming Zhao,Youzhong Dong,Quan Kuang
This data article contains the synthesis and structure information of a new Fe-base sodium metaphosphate compound, which is related to the research article entitled ‘Synthesis, structural, magnetic and sodium deinsertion/insertion properties of a sodium ferrous metaphosphate, NaFe(PO 3 ) 3 ’ by Lin et al. [1] . The research article has reported a new Fe-base metaphosphate compound NaFe(PO 3 ) 3 , which is discovered during the exploration of the new potential electrode materials for sodium-ion batteries. In this data article, the synthesized process of this metaphosphate compound and the morphology of the obtained sample will be provided. The high-power XRD Rietveld refinement is applied to determine the crystal structure of this metaphosphate compound and the refinement result including the main refinement parameters, atomic coordinate and some important lattace parameters are stored in the cif file. Also, the refined structure has be evaluated by checkcif report and the result is also provided as the supplementary materials.
研究领域:
材料科学
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无机化学
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储能
·
晶体学
·
电化学
✓ 已验证
DOI
Analytical Methods
·
2026
·
IF 2.6
Bingyu Fu,Yanru Shao,Zhixiong Zheng,Shengxin Wen,Yingli Guo,Qi Xu,Hualin Yang
In this study, a simple and sensitive dual-mode biosensor was designed based on the color of 2,6-dichloroindiphenol (DCIP) and the fluorescence of calcein. The target alkaline phosphatase (ALP) can catalyze the dephosphorylation of L-ascorbic acid-2-phosphate (AAP) to form ascorbic acid (AA) and phosphate ions. The reducing properties of AA can reduce the DCIP from blue to colorless. Meanwhile, phosphate ions can chelate with europium ions (Eu 3+ ) to restore the fluorescence of Eu 3+ -Calcein. In colorimetric mode, the linear detection range for ALP was 1.56-50 U/L with a limit of detection (LOD) of 0.27 U/L. In fluorescence mode, the linear detection range was 0.78-25 U/L and LOD was 0.23 U/L. Besides, the selectivity of this dual-mode for ALP was very excellent and the recovery rates in serum samples were also satisfactory.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2018
·
IF 6.14
Liqiao Zhong,Yong Lu,Haixia Li,Zhanliang Tao,Jun Chen
Aqueous rechargeable sodium-ion batteries (ARSIBs) are promising candidates for large-scale energy storage applications due to their high safety, low cost, and environmental friendliness. However, appropriate anode materials with high capacity for ARSIBs are limited, and their cycling stability is generally unsatisfactory. Here we report high-performance ARSIBs with polyacrylamide hydrogel as electrolyte and alloxazine (ALO) encapsulated in CMK-3 as anode. The hydrogel with solid content of 60% could effectively mitigate the dissolution issue of sodiated ALO because its cross-linked structure is helpful to reserve H2O. The ALO/CMK-3 anode based on a two-electron transfer reaction could deliver a high capacity of 160 mA h g–1. The introduction of CMK-3 could improve the electrical conductivity of ALO and further reduce the dissolution of sodiated ALO because of its high conductivity and nanochannel structure. The full ARSIBs exhibit an energy density of 50 W h kg–1 (based on the total mass of active electrode materials) with good capacity retention of 90% after 100 cycles at 2 C and high rate capability of 146 mA h g–1 at 10 C (1 C = 250 mA g–1). This work paves the way to construct high-performance ARSIBs with high-capacity organic anode and hydrogel electrolyte.
研究领域:
能源材料
·
电化学
·
电池技术
✓ 已验证
DOI
高影响因子
Journal of Cleaner Production
·
2022
·
IF 11.072
Yufei Zhang,Junhua Yun,Lei Zhou,Guoyang Zhang,Mei Zhao,Hossain M. Zabed,Xianghui Qi
To achieve carbon neutrality and carbon peaking goals, biomanufacturing of high-value chemicals from sustainable biorefinery has emerged as an attractive alternative to traditional petrochemical-based processes. 3-Hydroxypropionic acid (3-HP) is one of the top value-added building-block chemicals with diverse applications, which has increased its demand for large-scale industrial production. Nevertheless, sustainable biosynthesis of 3-HP is limited by the lack of robust strains and the need for expensive fermentation medium components. Herein, efforts were made to overcome these limitations through metabolic engineering of Escherichia coli and process optimization. First, the functional 3-HP biosynthetic pathway was recruited and optimized in E. coli . Next, the endogenous glycerol facilitator (GlpF) was overexpressed to enhance glycerol uptake, and the expression level of aldehyde dehydrogenase (YdcW) was optimized for speeding up 3-HP biosynthesis. Subsequently, global regulator engineering further improved 3-HP production. Additionally, corn steep liquor (CSL) was used to develop a cheap fermentation medium. Finally, co-fermentation of crude glycerol with glucose and acetic acid using the final strain produced 67.62 g/L 3-HP with a yield and a productivity of 0.86 mol/mol glycerol and 1.41 g/L/h, respectively.
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Huiru Wang,Jingyi Liu,Sorour Sadeghzade,Runsheng Hou,Hongyan Yuan
Among piezo composites, 0–3 type ceramic/polymer-based composites have balanced properties and flexible manufacturing processes, allowing them to tackle challenges in wearable electronics and sensing technology. However, due to a misfit between the dielectric coefficients of the ceramic particles and polymer matrix , poling 0–3 composites is difficult. Therefore, in this study, we develop a novel poling method that combines the merits of normal corona poling and oil-based poling methods to activate a lead zirconium titanate (PZT)/Polyethylene glycol diacrylate (PEGDA) composite. The influence of various parameters (voltage, temperature, poling duration, and time of ageing) on the piezoelectric and dielectric properties of the PZT/polymer composite were evaluated. For the 0–3 PZT/PEGDA composites (67 wt%), the optimal poling parameters were found to be 60 min poling duration, 25 °C, and 24 kV. The d 33 (32 pC/N) obtained by the proposed poling method is about 3 times that obtained by the normal corona poling method (11 pC/N). This modified poling method was shown to be more effective than the conventional method for a range of filler contents (50 wt%, 67 wt%, and 75 wt%). It was also found that the d 33 value of the PZT/PEGDA composite increased over time and was attributed to the increase of the composite dielectric constant after poling. Finally, sensing elements were assembled from the poled samples and evaluated, which shows the potential for detecting tiny signals in sensing and soft robotics.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）