Surface engineering of microbial cells: Strategies and applications

Kiprono, Sabella J.; Yang, Guang

doi:10.30919/es.180330

Cited by 16 publications

(11 citation statements)

References 89 publications

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“…In order to meet the application requirements of nextgeneration portable electronic devices, it is particularly important to develop flexible, efficient, lightweight, and miniaturized energy storage systems. Compared with other energy storage devices [1][2][3][4][5], supercapacitors have become the focus due to their high charge and discharge rate, long cycle life, high power density, etc., but supercapacitors have a lower energy density [6][7][8][9][10][11]. Since electrode materials are an important factor affecting electrochemical performances, exploring new electrode materials for supercapacitors is the key to improving the properties of energy storage systems.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of ternary MXene/MnO2/polyaniline nanostructure with good electrochemical performances

Wei

Luo

Zhao

et al. 2021

Adv Compos Hybrid Mater

106

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The ternary MXene/MnO 2 /polyaniline (PANI) nanostructure was successfully prepared through a simple, scalable, and reproducible two-step method. First, the interlaced layered MnO 2 is grown on the interlayer and surface of MXene through the hydrothermal reaction. And then the composite was covered with conducting polymer PANI through the redox reaction in the ice bath to obtain the ternary MXene/MnO 2 /PANI nanostructure. The accordion-like MXene substrate has good conductivity and provides electron conduction channels. MnO 2 nanosheets not only inhibit the re-stacking of the MXene layer but also form an effective pore space, which is conducive to ion diffusion and transfer. The outer PANI can further improve the electrochemical performance of the composite. The morphology, chemical structure, and crystal phase of the prepared nanostructure were measured in detail by SEM, FTIR, and XRD. In addition, the behavior of the supercapacitor was analyzed through cyclic voltammetry (CV) and galvanostatic charge and discharge (GCD) tests. Test analyses show that the specific capacitance of the MXene/MnO 2 /PANI nanostructure is about 216 F g −1 at a current density of 1 A g −1 . And the capacitance retention rate after 5000 cycles under the two-electrode test system is about 74%.

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Section: Introductionmentioning

confidence: 99%

Fabrication of ternary MXene/MnO2/polyaniline nanostructure with good electrochemical performances

Wei

Luo

Zhao

et al. 2021

Adv Compos Hybrid Mater

106

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show abstract

“…The unique structures of PNCs make them possess unique properties when compared to the pure polymers. Therefore, different researches have been conducted on Polymer nanocomposites [19][20][21][22][23][24][25], and these materials have been widely used in different fields, such as biological [26,27], electronics [28][29][30], electromagnetic [31] and aerospace.…”

Section: Introductionmentioning

confidence: 99%

Ballistic performance of Kevlar fabric impregnated with nanosilica/PEG shear thickening fluid

Khodadadi

Liaghat

Vahid

et al. 2019

Composites Part B: Engineering

140

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This study presents the response of fiber reinforced composite material composed of woven Kevlar fabric impregnated with a colloidal shear thickening fluid (STF) under high velocity impact loading. The STF was made by dispersing silica nanoparticles at 15, 25, 35 and 45 wt.% loading in polyethylene glycol. The effects of silica nanoparticle loading on energy absorption and ballistic limit were studied experimentally. Rheological results revealed that shear thickening occurred at all four nanosilica loading and higher loading showing the higher shear thickening at lower shear rate. SEM images confirmed good dispersion of nanosilica particles in the suspension. The results of the pull out test show that by increasing nanosilica loading, the force required to pull the yarn out from the fabric impregnated by STF increases. Impact resistance performance of Kevlar fabric is significantly enhanced due to the presence of STF. Although high velocity impact results show that by increasing nanosilica loading, the energy absorption of composites increases, but in high loading of nanosilica, the effectiveness of STF decreases. For further investigation, the energy absorption at the ballistic limit was normalized by the areal density of the neat and impregnated fabrics to give the specific energy absorption (SEA). It is found that the SEA of 15 wt.% nanosilica loading is lower compared to the neat fabric. Also the highest SEA turn out in the case of 35 wt.% STF/Kevlar composites in which the SEA is 2.3 times larger than those of the neat fabric.

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“…Otherwise, yeast survival can be improved by using encapsulation methods. Among microencapsulation methods, the layer-by-layer (LbL) self-assembly technique have demonstrated particular interest to control cell viability and functionality ( Kiprono et al, 2018 ). The LbL system is built by means of electrostatic attraction between oppositely charged polyelectrolytes forming successive layers deposited around the active core ( Guzmán et al, 2017 ).…”

Section: Introductionmentioning

confidence: 99%

Highlighting Protective Effect of Encapsulation on Yeast Cell Response to Dehydration Using Synchrotron Infrared Microspectroscopy at the Single-Cell Level

et al. 2020

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In the present paper, the Layer by Layer (LbL) method using β-lactoglobulin and sodium alginate was performed to individually encapsulate Saccharomyces cerevisiae cells in microorganized shells in order to protect them against stresses during dehydration. Higher survival (∼1 log) for encapsulated yeast cells was effectively observed after air dehydration at 45°C. For the first time, the potentiality of Synchrotron-Fourier Transform InfraRed microspectroscopy (S-FTIR) was used at the single-cell level in order to analyze the contribution of the biochemical composition of non-encapsulated vs. encapsulated cells in response to dehydration. The microspectroscopy measurements clearly differentiated between non-encapsulated and encapsulated yeast cells in the amide band region. In the spectral region specific to lipids, the S-FTIR results indicated probably the decrease in membrane fluidity of yeast after dehydration without significant distinction between the two samples. These data suggested minor apparent chemical changes in cell attributable to the LbL system upon dehydration. More insights are expected regarding the lower mortality among encapsulated cells. Indeed the hypothesis that the biopolymeric layers could induce less damage in cell by affecting the transfer kinetics during dehydration-rehydration cycle, should be verified in further work.

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Surface engineering of microbial cells: Strategies and applications

Cited by 16 publications

References 89 publications

Fabrication of ternary MXene/MnO2/polyaniline nanostructure with good electrochemical performances

Fabrication of ternary MXene/MnO2/polyaniline nanostructure with good electrochemical performances

Ballistic performance of Kevlar fabric impregnated with nanosilica/PEG shear thickening fluid

Highlighting Protective Effect of Encapsulation on Yeast Cell Response to Dehydration Using Synchrotron Infrared Microspectroscopy at the Single-Cell Level

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