Quantifying electron-transfer in liquid-solid contact electrification and the formation of electric double-layer

Lin, Shiquan; Xu, Liang; Wang, Aurelia Chi; Wang, Zhong Lin

doi:10.1038/s41467-019-14278-9

Cited by 423 publications

(407 citation statements)

References 33 publications

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“…As for working mechanism, it mainly depends on the coupling effect of triboelectrification and electrostatic induction. [ 38–41 ] As shown in Figure 2e, when a force is applied, the two triboelectric layers come into contact with each other, resulting in the transfer of free electrons between the surfaces of the two triboelectric layers to a potential well. As the distance between the two triboelectric layers increases, a smaller barrier is formed and electrons remain moving between the surfaces.…”

Section: Resultsmentioning

confidence: 99%

Blue Energy Collection toward All‐Hours Self‐Powered Chemical Energy Conversion

Zhai

Wen

Chen

et al. 2020

Advanced Energy Materials

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The conversion and transmission of blue energy in the ocean are critical issues. By employing triboelectric nanogenerators (TENGs), blue energy can be harvested but the corresponding electricity transmission and storage are still great challenges. In this work, an automatic high‐efficiency self‐powered energy collection and conversion system is proposed that converts blue energy to chemical energy. A gear‐driven unidirectional acceleration TENG is designed to convert disordered and low‐frequency water wave energy to low voltage and high current DC output. The output bias from the TENG can be used to drive a Ti–Fe2O3/FeNiOOH based photoelectrochemical cell under sunlight to produce hydrogen. Moreover, under the situation without sunlight, the self‐powered system can be automatically switched to another working state to charge a Co3O4 based lithium‐ion battery. The hydrogen production rate reaches to 4.65 µL min‐1 under sunlight at the rotation speed of 120 rpm. The conversion efficiency of the whole system is calculated to be 2.29%. The system triggered by photoswitches can automatically switch between two working states with or without sunlight and convert the blue energy to either hydrogen energy or battery energy for easy storage and transmission, which widens the future applications for blue energy.

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Section: Resultsmentioning

confidence: 99%

Blue Energy Collection toward All‐Hours Self‐Powered Chemical Energy Conversion

Zhai

Wen

Chen

et al. 2020

Advanced Energy Materials

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“…The results of our recent studies suggested an explanation for the divergence between intra and extracellular PN-OP and indicated that calcium ions are essential for intracellular PN-OP tension. Calcium ions and PN synergistically modulate the tension effect of PN-OP according the double electric layer theory [46,47] . Data from the present study also indicate that PN-OP elicited by BBB lesion factors is accompanied by an increase in calcium ions.…”

Section: Discussionmentioning

confidence: 99%

Protein Nanoparticle Osmotic Pressure Modifies Nonselective Permeability of the Blood Brain Barrier by Increasing Membrane Fluidity

Chen

Wang

et al. 2020

Preprint

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BackgroundIntracellular tension plays a crucial role in the destruction of the blood brain barrier (BBB) in response to lesion stimuli. Tight junction structure could be primarily affected by tension activity. In this study, we aimed to determine the effects of extracellular BBB damage on intracellular tension activity, and elucidate the mechanism underlying the effects of intracellular protein nanoparticle-dependent osmotic pressure on BBB permeability.MethodsThe intracellular tension for tight junction proteins occludin and ZO1 were evaluated using the fluorescence resonance energy transfer (FRET)-based tension probes and cpstFRET analysis. The efficiency of the probes was examined by acceptor photobleaching FRET (FRET-AB) analysis. The changes in mobility ratios of the transmembrane protein occludin were evaluated via the fluorescence recovery after photobleaching (FRAP) test. The cytoplasmic osmotic pressure (OP) was measured using the Osmomat 3000 Freezing Point Osmometer and 050 Membrane Osmometer. The count rate of cytoplasmic nanoparticles was detected by Nanosight NS300. The activation of cofilin and stathmin was examined by Western blot analysis. The BBB permeability in vivo was determined via investigating the changes of Evans Blue (EB) injected into the SD rats. The tight junction formation was assessed by the measurement of transendothelial electrical resistance (TEER). Intracellular calcium or chloride ions were measured using Fluo-4 AM or MQAE dyes. ResultsBBB lesions were accompanied by changes in occludin/ZO1 tension. Increases in intracellular osmotic pressure were involved in alteration of BBB permeability, possibly through the depolymerization of microfilaments or microtubules and mass production of protein nanoparticles according to the Donnan effect. Recovery of protein nanoparticle osmotic pressure could effectively reverse the effects of changes in occludin/ZO1 tension and BBB lesions. Outward tension of intracellular osmotic potential also caused upregulation of membrane fluidity, which promoted nonselective drug influx.ConclusionsOur results suggest a crucial mechanical mechanism underlying BBB lesions, and protein nanoparticle osmotic pressure could be a novel therapeutic target for BBB lesion-related brain diseases. Our results also provide a basis for further studies on the regulation of intracellular tension activity and its effect on the permeability of the BBB, and development of novel drugs that cross the blood-brain barrier.

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“…It is revealed that there are both electron transfer and ion transfer in the liquid-solid CE, where electron transfer plays a dominant role in liquid-solid CE [108]. Specifically, the CE between hydrophilic surfaces and aqueous solutions is likely dominated by ion transfer, while the CE between hydrophobic surfaces and aqueous solutions is more likely to be dominated by electron transfer [109].…”

Section: Summary and Perspectivesmentioning

confidence: 99%

Triboelectric nanogenerators: Fundamental physics and potential applications

et al. 2020

Self Cite

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Based on the conjunction of contact electrification and electrostatic induction, triboelectric nanogenerators (TENGs) can harvest mechanical energy dispersed in our environment. With the characteristics of simple structure, light weight, broad material availability, low cost, and high efficiency even at low operation frequency, TENG can serve as a promising alternative strategy for meeting the needs of distributed energy for the internet of things and network. The major potential applications of TENG can be summarized as four fields containing micro/nano power sources, self-powered sensors, large-scale blue energy, and direct high-voltage power sources. In this paper, the fundamental physics, output performance enhancement, and applications of TENGs are reviewed to timely summarize the development of TENGs and provide a guideline for future research.

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Quantifying electron-transfer in liquid-solid contact electrification and the formation of electric double-layer

Cited by 423 publications

References 33 publications

Blue Energy Collection toward All‐Hours Self‐Powered Chemical Energy Conversion

Blue Energy Collection toward All‐Hours Self‐Powered Chemical Energy Conversion

Protein Nanoparticle Osmotic Pressure Modifies Nonselective Permeability of the Blood Brain Barrier by Increasing Membrane Fluidity

Triboelectric nanogenerators: Fundamental physics and potential applications

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