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- 2019
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Tidskriftsartikel (refereegranskat)
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| 2. |
- Piao, X., et al.
(författare)
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Oxidized cellulose nanofibrils-based surimi gel enhancing additives : Interactions, performance and mechanisms
- 2022
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Ingår i: Food Hydrocolloids. - : Elsevier BV. - 0268-005X .- 1873-7137. ; 133
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Tidskriftsartikel (refereegranskat)abstract
- Surimi-based products with preferred textural properties and high nutritional value are fashionable throughout the market. Enhancing surimi gel characteristics is of key importance for enabling the following processing and warranting the end-product quality, but challenging due to the lack of energy- and performance-efficient processes and the elusive mechanisms underpinned such enhancements. Focusing on enhancing surimi gel properties by introducing sustainable additives, we successfully explore functionalized cellulose nanofibrils as a textural enhancer in surimi gels and establish a new model to expound the interaction mechanisms. Firstly, TEMPO-mediated oxidation prior to homogenization harvests functionalized cellulose nanofibrils with unique fibrillary shape, uniform nano-size, high surface hydrophilicity and activated -COO- groups, highly suited for the additive use in surimi gels (Monto et al., 2021). Secondly, the innovative application of oxidized cellulose nanofibrils at a remarkably low concentrations (0.1 g/100 g surimi) greatly improve the whiteness, microstructure, water holding capacity, gel strength and thermal stability of the surimi gels, through a synergistic effect of matrix-reinforcing, water binding and entrapping, covalent interactions (disulfide bonds, amide bonds), non-covalent interactions (hydrogen bonds, ionic bonds) and favorable protein conformational changes within the network. Next, a new mechanism model toward the high-performance surimi gels is concluded to better elucidate the interactions between oxidized cellulose nanofibrils and myosin molecules. We expect that this work can provide guidelines on designing novel and high-quality cellulose-additive foods and understanding the roles of food additives in meat gel systems, for advancing the applications of new additives and gelation mechanisms in the food industry.
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| 4. |
- Horn, M. R., et al.
(författare)
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Polyoxometalates (POMs) : From electroactive clusters to energy materials
- 2021
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Ingår i: Energy & Environmental Science. - : Royal Society of Chemistry. - 1754-5692 .- 1754-5706. ; 14:4, s. 1652-1700
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Tidskriftsartikel (refereegranskat)abstract
- Polyoxometalates (POMs) represent a class of nanomaterials, which hold enormous promise for a range of energy-related applications. Their promise is owing to their "special"structure that gives POMs a truly unique ability to control redox reactions in energy conversion and storage. One such amazing capability is their large number of redox active sites that arises from the complex three-dimensional cluster of metal-oxide ions linked together by oxygen atoms. Here, a critical review on how POMs emerged from being molecular clusters for fundamental studies, to next-generation materials for energy applications is provided. We highlight how exploiting the versatility and activity of these molecules can lead to improved performance in energy devices such as supercapacitors and batteries, and in energy catalyst applications. The potential of POMs across numerous fields is systematically outlined by investigating structure-property-performance relationships and the determinant factors for energy systems. Finally, the challenges and opportunities for this class of materials with respect to addressing our pressing energy-related concerns are identified. This journal is © The Royal Society of Chemistry.
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| 5. |
- Jadhav, S., et al.
(författare)
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Enhancing Mechanical Energy Transfer of Piezoelectric Supercapacitors
- 2021
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Ingår i: Advanced Materials Technologies. - : John Wiley and Sons Inc. - 2365-709X.
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Tidskriftsartikel (refereegranskat)abstract
- The expected widespread use of wearable and other low-power healthcare devices has triggered great interest in piezoelectric materials as a promising energy harvester. However, traditional piezoelectric materials suffer from poor interfacial energy transfer when used in self-charging power cells. Herein, piezoelectric supercapacitors (PSCs) are engineered using MXene-incorporated polymeric piezo separator and MXene (Ti3C2Tx) multilayered sheets as electrodes. The MXene-blended polymer film showed considerable improvement with maximum output voltage of 28 V and current of 1.71 µA. The electromechanical properties studied by piezoelectric force microscopy suggest that the integration of MXene in polyvinylidene fluoride (PVDF) matrix induces the degree of dipole moment alignment, thereby improving the piezoelectric properties of PVDF. At the device level, the PSC featured the capacitance of 61 mF cm–2, the energy density of 24.9 mJ cm−2, the maximum power density of 1.3 mW cm−3, and the excellent long-term cycling stability. A way is paved toward green, integrated energy harvesting and storing technology for next-generation self-powered implantable and wearable electronics. © 2021 Wiley-VCH GmbH
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