JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2022
·
IF 9.965
Qirui Tian,Weiqing Zhou,Qiong Cai,Xiaoyun Pan,Guanghui Ma,Guoping Lian
Hypothesis Essential oils (EOs) are common additives in daily products by virtue of their olfactory, physicochemical, and biological characteristics . However, EOs are physicochemically unstable and susceptible to degradation or loss, leading to limited shelf life and inadequate efficacy. Herein we propose a new bi-layered encapsulation structure in combination with complex coacervation and self-coating of polydopamine (PDA) on membrane emulsified mono-dispersion of EOs droplets. Experiments A mono-dispersed EOs emulsion stabilized by nonionic surfactants was produced by membrane emulsification , wherein the EOs droplets were applied as soft templates to deposit a superficial PDA layer. Under alkaline conditions, gelatin (GE) was bound to the PDA layer and further applied as in situ coacervation sites for gum Arabic (GA). Structural identification and morphological observation proved the successful preparation of bi-layered EOs capsules. Findings Compared with traditional complex coacervation strategies, current novel bi-layered capsules showed significantly improved structural stability, thermal stability, providing better protection of EOs with sustained release properties. Moreover, the encapsulation efficiency and loading content were both proved higher for the bi-layered system. The first report on PDA-coating onto surfactants-absorbed macroemulsion droplets also provides an in-depth insight into applying PDA as versatile intermediate functional biomaterials.
研究领域:
食品科学
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材料科学
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化学工程
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Ke Xiao,Peiyao Wang,Jin Bai,Yuanyuan Liu,Siya Wang,Shiyu Qiu,Xianlong Wang,Xuebin Zhu,Bangchuan Zhao,Yuping Sun
Low softening-point pitch (LP) is regarded as a promising precursor for hard carbon anodes in sodium-ion batteries due to its low cost and high yield. However, the sodium storage performance of LP-derived carbon materials is always undesirable owing to the high degree of graphitization. Herein, a self-coated hard carbon (HC@SC) material with relative disordered structure was developed from LP precursor using synergistic deep pre-oxidation and self-coating strategies. The oxygen-crosslinked structure endowed in the deep pre-oxidation process effectively hinders carbon layer growth during the subsequent pyrolysis, promoting the formation of disordered hard carbon structure with larger interlayer spacing. Additionally, the soft carbon self-coating layer is introduced onto the hard carbon surface to improve its electrical conductivity and then enhance the sodium diffusion. Consequently, the HC@SC anode delivers an initial charge capacity of 311.9 mAh g −1 at 0.05 A g −1 and a rate capability of 109.7 mAh g −1 at 5 A g −1 , and preserves a high-capacity retention of 90.0 % after 1000 cycles at 1 A g −1 . Furthermore, the NNMO//HC@SC full cell exhibits desirable cycling stability and rate performance.
研究领域:
材料科学
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电化学
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产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
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2022
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IF 7.968
Lvji Yan,Haoyu Deng,Sikpaam Issaka Alhassan,Haiying Gang,Bichao Wu,Dun Wei,Yiyun Cao,Peng Chen,Haiying Wang
Bismuth-based materials as an efficient Cl - storage electrode in capacitive deionization (CDI) technology possess a high affinity for chloride ions. However, their performance is significantly limited owing to the frequent volume expansion of bismuth (Bi) nanoparticles during the electro-sorption process. Herein, a facile synthesis strategy of a self-coated bismuth-carbon composite (BiAC@C) was fabricated through one-step carbonization of commercial bismuth acetate. The yolk-shell nanostructure-like BiAC@C uniformly sandwiched the Bi nanoparticles in the porous carbon framework, which not only provided a reinforcing “carbon skeleton” for constraining Bi nanoparticles in spatial, but also facilitated the ions diffusion and better electronic conductivity, supplying an superior Cl - removal with enhanced ability for water desalination . Results show that a superior Cl - removal capacity of the synthesized BiAC@C composite electrodes was ∼109.63 mg g −1 at 20 mA g −1 , substantially higher than that of the most Cl - capturing electrodes recently reported. Moreover, such a capacity could keep a durability that still retains 80.53 % of its initial capacity after 50 continuous treatment cycles under current density of 30 mA g −1 , and it is much higher than 29.11 % of the pure Bi electrode. It is expected that the prepared BiAC@C composite could be a promising alternative material for the extraction of Cl - from wastewater.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
Journal of Materials Chemistry B
·
2013
·Vol. 2
·期 4
·363-375
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IF 0
Lang Ma,Hui Qin,Chong Cheng,Yi Xia,Chao He,Chuanxiong Nie,Lingren Wang,Changsheng Zhao
In this study, multifunctional mussel-inspired self-coated membranes with remarkable blood and cell compatibilities are prepared by a facile and green approach. A highly sulfonated linear heparin-like polymer (HepLP, poly(sodium 4-vinylbenzenesulfonate)-co-poly(sodium methacrylate)) and heparin are chosen for the mussel-inspired heparin-mimicking coating, respectively. Firstly, DA is grafted onto the backbone of HepLP or heparin to obtain DA grafted HepLP (DA-g-HepLP) or DA grafted heparin (DA-g-Hep) by means of the carbodiimide chemistry method. Then, the DA-g-HepLP and DA-g-Hep are used to prepare surface coated heparin-mimicking substrates; the polyethersulfone (PES) dialysis membrane is chosen as the model substrate. The coated surface composition, surface morphology, water contact angle, surface zeta-potential, blood compatibility and cell compatibility are systematically investigated. The results of surface spectra, scanning electron microscopy (SEM) and atomic force microscopy (AFM) indicated that the DA-g-HepLP and DA-g-Hep were successfully coated onto the membranes. The coated membranes showed increased hydrophilicity and electronegativity, decreased plasma protein adsorption, and suppressed platelet adhesion compared to the pristine membrane. The cell morphology observation and cytotoxicity assays demonstrated that the surface coated heparin-mimicking membranes showed superior performance in endothelial cell proliferation and morphology differentiation. In addition, the excellent anticoagulant bioactivities indicated that the adhered DA-g-HepLP (or DA-g-Hep) could function or maintain its biological activity after the immobilization. In general, the mussel-inspired protocol of surface self-coating conferred the modified membranes with integrated blood compatibility, cell proliferation and biological activity for multi-biomedical applications, like hemodialysis, blood purification, organ implantation, and cell and tissue cultures.
研究领域:
材料科学
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生物材料
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生物医学工程
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表面化学
✓ 已验证
产品关联
DOI
PubMed
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