IONICS
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2020
·Vol. 26
·期 12
·5897-5906
·
IF 2.394
Gu Fengling,Liu Wenbin,Song Yonghai,Liu Li-Min,Zhu Yongmei
Herein, a new activated porous carbon (APC) was proposed by carbonizing waste biomass of pinecone which could be obtained in large quantities and subsequently activation of zinc chloride. Then small Co 3 O 4 nanoparticles were loaded on the surface and holes of APC to prepare the final Co 3 O 4 /APC nanocomposites. The as-prepared APC had a lotus root-like and layered porous structure with a large number of mesopores and micropores. The APC reduced the agglomeration of small Co 3 O 4 particles which were uniformly anchored on the surface of APC. When applied for the anode of lithium-ion batteries, the Co 3 O 4/ APC nanocomposites had a reversible capacity of 625 mAh g −1 after 200 cycles at the current density of 500 mA g −1 . The Co 3 O 4/ APC nanocomposites also had a good rate performance. Above all, this work could transform waste biomass into sustainable resource, and the raw materials were easy to obtain in large quantities.
研究领域:
材料科学
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能源技术
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产品关联
DOI
高影响因子
MOLECULES
·
2017
·Vol. 22
·期 9
·1494
·
IF 2.861
Yan Du,Zhibin Wang,Libo Wang,Mingjie Gao,Liqian Wang,Chunli Gan,Chunjuan Yang
A rapid and sensitive Ultra High Performance Liquid Chromatography Electrospray Ionization Tandem Mass Spectrometry (UHPLC-ESI-MS/MS) method was developed and validated to simultaneously determine the concentration of seven phenolic acids (syringic acid, ferulic acid, caffeic acid, vanillic acid,p-coumaric acid, 3,4-dihydroxybenzoic acid and 4-hydroxybenzoic acid) in rat plasma after oral administration ofEchinacea purpureaextract. After mixing with the internal standard (IS), butylparaben, plasma samples were prepared by liquid–liquid extraction with ethyl acetate. The separation was performed using the Agilent Eclipse Plus C18column (1.8 μm, 2.1 mm × 50 mm) with a gradient system consisting of solution A (0.1% acetic acid in water) and solution B (methanol) at a flow rate of 0.3 mL/min. The detection was accomplished by a multiple reaction monitoring (MRM) mode with electrospray ionization (ESI). The method was validated in terms of linearity, precision, accuracy, extraction recovery, matrix effect and stability. This method was successfully applied to study the pharmacokinetic properties of the seven compounds after oral administration ofEchinacea purpureaextract in rats.Keywords:Echinacea purpurea;phenolic acids;UHPLC-ESI-MS/MS;pharmacokinetics
研究领域:
分析化学
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药理学
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植物化学
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产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL TECHNOLOGY
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2024
·
IF 2.2
Yongli Liu,Guobei Ge,Huanjia Liu,Yuxin Wang,Penghui Zhou,Bin Li,Guifen Zhu
2,4,6-Trinitrophenol (TNP) has high explosive risks and biological toxicity, and there has been considerable concern over the determination of TNP. In the present work, fluorescent carbon dots (CDs) stemmed from a green carbon source of pinecone by the facile hydrothermal approach. A novel environment- friendly fluorescent probe was developed to efficiently detect TNP by using the obtained CDs with remarkable fluorescence stability. The fluorescent CDs exhibited obvious excitation dependence with the highest peaks for excitation and emission occurring at 321 and 411 nm, respectively. The fluorescence intensity is significantly reduced by TNP owing to the inner filter effect with the CDs. The probe exhibited good linearity with TNP concentrations in the range of 0.025–20 μg mL−1, and the limit of detection was as low as 8.5 ng mL−1. Additionally, the probe proved successful in sensing TNP quantitatively in actual environmental samples with satisfied recoveries of 95.6–99.6%. The developed fluorescent probe offered an environment-friendly, efficient, rapid, and reliable platform for detecting trace TNP in the environmental field.HighlightsNovel carbon dots were synthesised from green precursors of pineal powder.The highly effective quenching process was put down to the inner filter effect.The as-constructed fluorescent probe was successfully utilised for sensing 2,4,6-trinitrophenol in environmental samples.The proposed method was simple, rapid, efficient, economical, and eco-friendly.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Composites and Hybrid Materials
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2021
·Vol. 4
·期 4
·1398-1412
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IF 5.693
Huang Xinmeng,Liu Xuehua,Jia Zirui,Wang Bingbing,Wu Xiaomeng,Wu Guanglei
A series of CeO 2 /porous carbon composites are successfully prepared by hydrothermal method and subsequent pyrolysis method by using pine cone as biomass carbon source. Besides, the effect of cerium source on the electromagnetic (EM) parameters and electromagnetic wave (EMW) absorption performance of CeO 2 /porous carbon composites is further investigated. Additionally, the possible EMW absorption mechanism is also discussed. The results show that the CeO 2 /porous carbon composites show enhanced EMW absorption performance than pure porous carbon materials. Remarkably, with the cerium nitrate content of 0.6 mmol, the binary composites show a minimum reflection loss of − 56.04 dB with a thickness of 1.9 mm, and the effective absorption bandwidth is 5.28 GHz with a thickness of 2.1 mm. The remarkable electromagnetic wave absorbing property is attributed to the synergistic effect of porous carbon conductive framework and multiple interface polarization of heterointerfaces, as well as the oxygen vacancy defect caused by the unique structure of CeO 2 . This work could provide inspiration to broaden the application of CeO 2 in dealing with the electromagnetic interference and pollution. Graphical abstract Multiple interface polarization along with conductive loss and dipolar polarization are contributed to excellent electromagnetic wave absorption performance of the CeO 2 /porous carbon composites.
研究领域:
材料科学
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电磁学
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产品关联
DOI
高影响因子
JOURNAL OF CELLULAR PHYSIOLOGY
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2018
·Vol. 234
·期 2
·1880-1888
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IF 3.923
Ying Ye,Yanan Song,Juhua Zhuang,Guoyu Wang,Jing Ni,Wei Xia
Echinacoside (ECH) is a phenylethanoid glycoside extracted from a Chinese herbal medicine, Cistanches salsa . ECH possesses many biological properties, including anti-inflammation, neural protection, liver protection, and antitumor. In the current study, we aimed to explore the effects of ECH on hepatocellular carcinoma (HCC) and the underlying mechanisms. The results showed that ECH could attenuate diethylnitrosamine (DEN)-induced HCC in mice, and exerted antiproliferative and proapoptotic functions on HepG2 HCC cell line. ECH exposure in HepG2 cells dose-dependently reduced the phosphorylation of AKT (p-AKT) and enhanced the expression of p21 (a cell cycle inhibitor) and Bax (a proapoptotic protein). Furthermore, ECH significantly suppressed insulin-like growth factor-1-induced p-AKT and cell proliferation. These data indicated that phosphoinositide 3-kinase (PI3K)/AKT signaling was involved in the anti-HCC activity of ECH. Gene set enrichment analysis results revealed a positive correlation between the PI3K pathway and triggering receptors expressed on myeloid cells 2 (TREM2) expression in HCC tissues. ECH exposure significantly decreased TREM2 protein levels in HepG2 cells and DEN-induced HCC. Furthermore, ECH-mediated proliferation inhibition and AKT signaling inactivation were notably attenuated by TREM2 overexpression. In conclusion, ECH exerted its antitumor activity via decreasing TREM2 expression and PI3K/AKT signaling.
研究领域:
肿瘤学
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药理学
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细胞生物学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
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2021
·
IF 6.165
Helin Xu,Xueqin Li,Yanyan Hao,Xiaobin Zhao,Yun Cheng,Jinli Zhang
To achieve simple and efficient separation of acteoside (ACT), extraction ACT from crude extracts of Cistanche tubulosa via ionic liquid (IL) based aqueous two-phase system (ATPS) is investigated. The IL–ATPS comprising [C 4 mim]BF 4 and (NH 4 ) 2 SO 4 exhibits excellent extraction performance, extracting almost all ACT in the [C 4 mim]BF 4 -rich phase. The high polarity of [C 4 mim]BF 4 having multi-hydrogen bond receptors is conducive for extracting ACT in the IL-rich phase, and (NH 4 ) 2 SO 4 not only provides a weak acidic microenvironment for increasing ACT stability in the IL-rich phase but also reduces the solubility of ACT in the salt-rich phase via the salting-out effect. In addition, molecular simulation results show that ACT is extracted in the [C 4 mim]BF 4 -rich phase via multi-interactions, including hydrogen bonding, van der Waals forces, and π–π stacking. This study is expected to provide a valuable reference for the separation of bioactive constituents from natural products.
研究领域:
植物化学
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天然产物分离
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES B-BIOINTERFACES
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2024
·
IF 5.4
Zizhao Chen,Pingping Feng,Ruqi Wang,Dongmin Chen,Chunmei Feng,Qishu Jin,Chen Yang,Botao Song
The use of dressings in clinical settings is common for the purpose of wound wrapping and creating an optimal microenvironment to enhance the healing process. Proper coverage of wounds with dressings serves as the fundamental basis for effective wound healing. Unfortunately, non-standard coverage by hands can cause pain and secondary damage to patients, while slow manual application during treatment of extensive burns may increase the risk of wound infection. Herein, drawing inspiration from the microstructure and hygroscopic deformation observed in pine cones, we propose a polyvinyl alcohol/polysulfone (PVA/PSF) smart dressing. This bioinspired smart dressing exhibits rapid bending deformation under high moisture condition, allowing easy adjustment of bending amplitude, speed, and direction. Moreover, the smart dressing is capable of rapid bending and autonomous wrapping around “artificial wounds” on a doll’s body, as well as fitting irregularly shaped “hand wounds” and extensive “arm wounds” on human subjects. By integrating two layers into one dressing design, we endow it with dual functionality: The hygroscopic PVA layer facilitates transversal liquid transport to effectively reduce exudate accumulation in the wound bed while maintaining proper moisture levels; meanwhile, the highly hydrophobic PSF layer repels various aqueous solutions to protect against external contaminants. In vivo results confirm that this multifunctional smart dressing promotes collagen synthesis and accelerates angiogenesis for accelerated wound healing. We believe that this innovative multifunctional approach to wound management will provide valuable insights into wound healing therapy.
研究领域:
生物医学工程
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材料科学
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再生医学
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产品关联
DOI
PubMed
高影响因子
SOLID STATE SCIENCES
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2024
·
IF 3.4
Ke-chun Li,Yong-heng Huang,Hai-tang Xu,Jian-fang Lu,Fu-hou Lei,Yan-xuan Wen
Molybdenum oxides as anode materials have received considerable attention because of their high-theoretical capacities. However, the abrupt volume changes during the charge/discharge process and the poor electrical conductivity lead to rapid capacity decay and poor cycling performance. Molybdenum oxides are anchored on carbon matrix to form composite that can effectively accelerate reaction kinetics and slow down capacity decay. Biomass-based carbon is a promising matrix, due to inexpensive, environment-friendly and abundant. In this study, the thin-flake MoO x was successfully anchored on the N-doped pinecone-derived carbon (NPC) by using a single-step hydrothermal method . When used as a potassium ion battery anode for the first time, the reversible capacity of optimised MoO x /NPC (210.4 mAh·g −1 ) was higher than that of pure MoO 2 (122.7 mAh·g −1 ) at 100 mA g −1 . Even when cycled at 500 mA g −1 , optimised MoO x /NPC exhibited a high capacity of 147.2 mAh·g −1 after 500 cycles. Moreover, the potassium ions storage mechanism was analyzed in detail. This finding demonstrates MoO x /NPC as a potential electrode for the development of high-performance PIBs, and provides a new strategy to reduce environmental pollution caused by treating pinecone and increase its additional value.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
·
IF 8.5
Wanying Yang,Ye Sun,Fan Yang,Yunfei Wang,Xiunan Li,Yanhua Yang,Dong Jiang
Biochar (BC) has been utilized in the production of carbon-based slow-release fertilizers owing to its extensive specific surface area and abundant functional groups. However, conventional biochar-based fertilizers still exhibit inadequate slow-release performance, necessitating further modification. In this paper, pinecone biochar (PB) was prepared by pyrolysis of pinecone, an agricultural waste, at different temperatures. Among all samples synthesized at different temperatures, the PB prepared at 700 °C exhibited the largest specific surface area, denoted as 700 PB, reaching 305.35 m 2 /g. Compared with biochar-coated urea prepared at other temperatures, the PB-coated urea produced at 700 °C demonstrates the optimal controlled-release performance. Cellulose acetate (CA) represents a cost-effective and naturally occurring biodegradable material. Therefore, in this study, urea was encapsulated with 700 PB and CA through physical coating and impregnation, leveraging CA's cost-effectiveness and inherent biodegradability, resulting in the successful preparation of a slow-release nitrogen fertilizer (PBUA). The sustained release performance and mechanism of different compositions of PBUA under different sustained release conditions (pH and temperature) were investigated. Among them, the composition was optimized, yielding a coated PBUA with a mass ratio of 700 PB to urea of 1.5: 1 and a CA mass fraction of 9 wt%, referred to as PBU 1.5 A 9 . The release performance of this coated PBUA is demonstrated to be the most optimal. Under room temperature and neutral conditions, the cumulative release amount of PBU 1.5 A 9 within 24 h is 4.37 %, which increases to 55.63 % after 28 days and further rises to 72.56 % after 60 days. The release results of PBUA are in strict conformity with the national standards. The results suggest that the release mechanism of PBUA adheres to the Weibull model. This work offers an effective approach for the preparation of slow-release nitrogen fertilizers.
研究领域:
农业科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Frontiers in Chemistry
·
2020
·
IF 3.693
Zhao Xiaobin,Cheng Yun,Xu Helin,Hao Yanyan,Lv Yin,Li Xueqin
Acteoside (ACT) belongs to a type of phenylethanoid glycosides (PhGs), and it is worthy of obtaining high-purity due to its significant medicinal functions. In this study, a novel class of MIMs was designed and synthesized with PVDF membranes as the base membrane for high selective separation and enrichment of ACT. The effects of the different functional monomers, the amounts of functional monomers, crosslinking agents, and initiators on the separation properties of MIMs were investigated. Furthermore, adsorption ability, permeation capacity, and reusability of MIMs were discussed for ACT. It indicated that MIM7 was the optimal performance of MIMs. The adsorption ability of MIM7 for ACT was 62.83 mg/g, and the selectivity factor (α) of MIM7 was up to 2.74 and its permeability factor (β) was greater than 2.66. Moreover, the adsorption amount of MIM7 was still more than 88.57% of the initial value after five cycles. As an ACT imprinted layer of MIMs only had recognition sites for ACT molecules, which recombined with the recognition sites in the membrane permeation experiment, ACT molecules penetration was hindered. However, the analogs of ECH successfully passed MIMs. It indicated that the selective MIMs for ACT followed the mechanism of delayed permeation. This work provides an important reference for the high permselective separation of natural products.
研究领域:
药学
·
分离科学与技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Jing Wu,Jin Qu,Guang Yin,Tingting Zhang,Hao-Yu Zhao,Fan-Zhen Jiao,Ji Liu,Xiaofeng Li,Zhong-Zhen Yu
Although most solar steam generation devices are effective in desalinating seawater and purifying wastewaters with heavy metal ions , they are ineffective in degrading organic pollutants from wastewaters. Herein, we design novel solar-driven water purification devices by decoration of three-dimensional pinecones with MoS 2 nanoflowers via a one-step hydrothermal synthesis for generating clean water. The vertically arrayed channels in the central rachis and the unique helically arranged scales of the hydrothermal pinecone can not only transfer bulk water upward to the evaporation surface, but also absorb more solar light from different incident angles for solar-thermal evaporation and photodegradation of wastewaters under omnidirectional irradiations. The decorated MoS 2 nanoflowers can not only enhance the solar-thermal energy conversion efficiency, but also decompose organic pollutants in the bulk water by their photocatalytic degradation effects. The resultant hydrothermal pinecone with in situ decorated MoS 2 (HPM) evaporator exhibits a high evaporation rate of 1.85 kg m −2 h −1 under 1-sun irradiation with a high energy efficiency of 96 %. During the solar-driven water purification processes, the powdery HPM can also photodegrade organic pollutants of methylene blue and rhodamine B with high removal efficiencies of 96 % and 95 %, respectively. For practical demonstration, by floating in the methylene blue solution under 1-sun irradiation, the bulky HPM can generate clean water by simultaneous solar-thermal evaporation and photocatalytic degradation. The integration of solar steam generation and photocatalytic degradation mechanisms makes the HPM evaporator highly promising for practical high-yield purification of wastewaters.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2019
·
IF 5.399
Juan Han,Li Wang,Lei Wang,Chunmei Li,Yanli Mao,Yun Wang
Bromelain is an important industrial proteolytic enzyme which has great commercial value and is of wide application in food, beverage, tenderization, cosmetic, textile and pharmaceutical industries. In this work, the core-shell-shell magnetic polymeric microspheres (Fe 3 O 4 @SiO 2 @P(NIPAM-co-AIM)/Ni 2+ ) composed of an SiO 2 -coated Fe 3 O 4 magnetite core and a Ni 2+ -immobilized cross-linked poly (N-isopropyl acrylamide-co-propylimidazole) (NIPAM-co-AIM) shell were synthesized via distillation-precipitation polymerization. The Ni 2+ cations in the magnetic polymeric microspheres shell provided docking sites for histidine and the microspheres exhibited excellent performance in the separation of bromelain with a binding capacity as high as 198 mg/g, and the recovery of enzyme activity could achieve 80%. It was found that the microspheres showed excellent performance for separation and purification of bromelain from the crude extract of pineapple peel, moreover the enzyme structure remained unchanged before and after elution process.
研究领域:
生物化学
·
材料科学
·
酶工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）