Dehydrogenation properties of ammonia borane–polyacrylamide nanofiber hydrogen storage composites

Kharel, Krishna; Gangineni, Radhika; Ware, Lauren; Lu, Yang; Wujcik, Evan K.; Wei, Suying; Günaydın-Şen, Özge

doi:10.1007/s10853-016-0724-8

Cited by 13 publications

(4 citation statements)

References 37 publications

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“…The ammonia borane nanophase was in the form of 4-nm nanoparticles, and released pure hydrogen from 50 • C. A last synthetic approach is nanostructuration by electrospinning, where nanofibers of a polymer encapsulating ammonia borane are elaborated. Useful polymers for that purpose are polystyrene [284], polyvinylpyrrolidone [285], poly(methyl methacrylate) [286], polyethylene oxide [287] and polyacrylamide [288]. In each case, embedded ammonia borane nanophase showed improved dehydrogenation properties in comparison with the bulk counterpart, but the release of some ammonia, diborane and/or borazine could not be avoided.…”

Section: Nanoconfinement Of Ammonia Boranementioning

confidence: 99%

Ammonia Borane: An Extensively Studied, Though Not Yet Implemented, Hydrogen Carrier

Demirci

2020

Energies

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Ammonia borane H3N−BH3 (AB) was re-discovered, in the 2000s, to play an important role in the developing hydrogen economy, but it has seemingly failed; at best it has lagged behind. The present review aims at analyzing, in the context of more than 300 articles, the reasons why AB gives a sense that it has failed as an anodic fuel, a liquid-state hydrogen carrier and a solid hydrogen carrier. The key issues AB faces and the key challenges ahead it has to address (i.e., those hindering its technological deployment) have been identified and itemized. The reality is that preventable errors have been made. First, some critical issues have been underestimated and thereby understudied, whereas others have been disproportionally considered. Second, the potential of AB has been overestimated, and there has been an undoubted lack of realistic and practical vision of it. Third, the competition in the field is severe, with more promising and cheaper hydrides in front of AB. Fourth, AB has been confined to lab benches, and consequently its technological readiness level has remained low. This is discussed in detail herein.

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Section: Nanoconfinement Of Ammonia Boranementioning

confidence: 99%

Ammonia Borane: An Extensively Studied, Though Not Yet Implemented, Hydrogen Carrier

Demirci

2020

Energies

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“…The characteristic peak at 3395 cm −1 in the Figure is due to the stretching vibration of the O−H/N−H group; the characteristic peak at 2831 cm −1 is the absorption of C−H [16] . The absorption peak at 2388 cm −1 is a characteristic B−H absorption peak, [17–18] the peak at 1631 cm −1 is probably a C=O bond stretching vibration peak, the characteristic peak at 1361–1399 cm −1 is due to C−N and the peak at 1153 cm −1 is attributed to a C−O stretching vibration [19] …”

Section: Resultsmentioning

confidence: 96%

“…The composition and molecular structure of G-CDs were further characterized by FTIR spectra of G-CDs and their components, as shown in Figures 2C and 2D. The characteristic peak at 3395 cm À 1 in the Figure is due to the stretching vibration of the OÀ H/NÀ H group; the characteristic peak at 2831 cm À 1 is the absorption of CÀ H. [16] The absorption peak at 2388 cm À 1 is a characteristic BÀ H absorption peak, [17][18] the peak at 1631 cm À 1 is probably a C=O bond stretching vibration Scheme 1. Schematic illustration of the experimental procedure.…”

Section: Characterization Of Double-emitting Fluorescent Carbon Quant...mentioning

confidence: 99%

A Facile Dual‐Emission Ratiometric Carbon‐Dot Fluorescent Probe and Its Application in Portable Chemical Sensors and Water Quality Analysis

Mao

et al. 2023

ChemistrySelect

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Based on the dual signal of double‐emitting carbon quantum dots (G‐CDs), a ratiometric fluorescence sensor is established to realize the analysis and detection of Fe3+ in real samples. When the excitation wavelength is 360 nm and 480 nm, the double emission fluorescence peaks are located at the wavelengths of 477 nm and 523 nm. The former is the fluorescence response signal, and the latter is the fluorescence background signal. The semi‐quantitative analysis of Fe3+ was achieved based on the linear relationship between the ratio F477/F523 of the two signals and the Fe3+ concentration. The linear range of this method is 0.015–120 μM, and the limit of detection (LOD, S/N=3) is 5 nM. Meanwhile, the naked‐eye visual detection of Fe3+ can be realized according to the fluorescence color of the probe. The probe exhibits excellent anti‐interference, selectivity and repeatability, and this method can be applied to the detection of Fe3+ in actual samples.

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“…The approach utilizes the highly selective Fujiwara reaction, a two‐fold preconcentration technique to enhance the sensitivity of the detection, and a hydrophobic electrospun syndiotactic polypropylene (sPP) fiber mat to greatly limit water in the Fujiwara reaction chemistry. Electrospinning, as a cost‐effective technique for the scalable production of continuous nanofibers and electrospun mats/membranes, is applicable to a wide range of polymers, polymer blends, sol‐gels, composites, and ceramics 11–18 . Briefly, by applying a high‐voltage electric field to a polymer solution or melt in a syringe, the surface tension of the solution or melt is overcome by the electrostatic forces and a polymer jet is ejected toward a grounded conductive foil collector where the mat of fibers is collected.…”

Section: Introductionmentioning

confidence: 99%

Point‐of‐need quantitative detection of trihalomethanes in environmental water samples using a highly sensitive and selective fiber‐based preconcentration system

Rouhi

Duprey

Cook

et al. 2022

J of Applied Polymer Sci

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Drinking water—a vital part of our ecosystem—is often exposed to contamination through industrialization. Halogenated compounds, for example, trihalomethanes (THMs), are among the most common contaminants, being by‐products of water chlorination/treatment. The carcinogenic and health effects of these compounds have motivated scientists to work on the accurate detection of THMs down to 80 ppb in treated water. Here, a superhydrophobic syndiotactic polypropylene (sPP) nanofiber mat is used to preconcentrate THMs in environmental water samples, and subsequently, detect them using a well‐known colorimetric reaction chemistry. The reaction chemistry yields a visible red/pink chromophore under visible light absorption. This reaction occurs when the preconcentrated THM becomes trapped in the liquid phase of the reaction chemistry, on the surface of the sPP fibers. This fiber mat is electrospun in a way which results in a large water contact angle >150°—allowing the working sensitivity of the reaction chemistry to be heightened and lowering the detection limit. The resulting color change can be analyzed via a simple quantitative color intensity analysis utilizing widely‐available software, measuring the THM content in water as low as 0.8 ppb. This cost‐effective and selective method was incorporated into a portable device, enabling on‐site users to evaluate the quality of drinking water.

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Dehydrogenation properties of ammonia borane–polyacrylamide nanofiber hydrogen storage composites

Cited by 13 publications

References 37 publications

Ammonia Borane: An Extensively Studied, Though Not Yet Implemented, Hydrogen Carrier

Ammonia Borane: An Extensively Studied, Though Not Yet Implemented, Hydrogen Carrier

A Facile Dual‐Emission Ratiometric Carbon‐Dot Fluorescent Probe and Its Application in Portable Chemical Sensors and Water Quality Analysis

Point‐of‐need quantitative detection of trihalomethanes in environmental water samples using a highly sensitive and selective fiber‐based preconcentration system

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