| 1. |
- Chakraborty, Indrani, et al.
(författare)
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Glucose-based biofuel cells and their applications in medical implants: A review
- 2024
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Ingår i: Heliyon. - : Elsevier BV. - 2405-8440. ; 10:13
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Forskningsöversikt (refereegranskat)abstract
- In glucose biofuel cells (G-BFCs), glucose oxidation at the anode and oxygen reduction at the cathode yield electrons, which generate electric energy that can power a wide range of electronic devices. Research associated with the development of G-BFCs has increased in popularity among researchers because of the eco-friendly nature of G-BFCs (as related to their construction) and their evolution from inexpensive bio-based materials. In addition, their excellent specificity towards glucose as an energy source, and other properties, such as small size and weight, make them attractive within various demanding applied environments. For example, G-BFCs have received much attention as implanted devices, especially for uses related to cardiac activities. Envisioned pacemakers and defibrillators powered by G-BFCs would not be required to have conventional lithium batteries exchanged every 5–10 years. However, future research is needed to develop G-BFCs demonstrating more stable power consistency and improved lifespan, as well as solving the challenges in converting laboratory-made implantable G-BFCs into implanted devices in the human body. The categorization of G-BFCs as a subcategory of different biofuel cells and their performance is reviewed in this article.
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| 2. |
- Hoogendoorn, Billy W., et al.
(författare)
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Cellulose nanofibers (CNFs) in the recycling of nickel and cadmium battery metals using electrodeposition
- 2023
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Ingår i: Nanoscale Advances. - : Royal Society of Chemistry (RSC). - 2516-0230. ; 5:19, s. 5263-5275
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Tidskriftsartikel (refereegranskat)abstract
- Cellulose nanofibers (CNFs) were employed in the aqueous electrodeposition of nickel and cadmium for battery metal recycling. The electrowinning of mixed Ni-Cd metal ion recycling solutions demonstrated that cadmium with a purity of over 99% could be selectively extracted while leaving the nickel in the solution. Two types of CNFs were evaluated: negatively charged CNFs (a-CNF) obtained through acid hydrolysis (−75 μeq. g−1) and positively charged CNFs (q-CNF) functionalized with quaternary ammonium groups (+85 μeq. g−1). The inclusion of CNFs in the Ni-Cd electrolytes induced growth of cm-sized dendrites in conditions where dendrites were otherwise not observed, or increased the degree of dendritic growth when it was already present to a lesser extent. The augmented dendritic growth correlated with an increase in deposition yields of up to 30%. Additionally, it facilitated the formation of easily detachable dendritic structures, enabling more efficient processing on a large scale and enhancing the recovery of the toxic cadmium metal. Regardless of the charged nature of the CNFs, both negatively and positively charged CNFs led to a significant formation of protruding cadmium dendrites. When deposited separately, dendritic growth and increased deposition yields remained consistent for the cadmium metal. However, dendrites were not observed during the deposition of nickel; instead, uniformly deposited layers were formed, albeit at lower yields (20%), when positively charged CNFs were present. This paper explores the potential of utilizing cellulose and its derivatives as the world's largest biomass resource to enhance battery metal recycling processes.
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| 3. |
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| 4. |
- Pandey, Annu, et al.
(författare)
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Mesoporous carbon-based sensor for quantification of prasugrel in solubilized system
- 2023
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Ingår i: Journal of the Indian Chemical Society. - : Elsevier BV. - 0019-4522. ; 100:9
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Tidskriftsartikel (refereegranskat)abstract
- In this study, a mesoporous carbon-based electrochemical sensor has been made up, possessing the novelty for ultra-sensitive detecting Prasugrel in pharmaceutical formulation and biological samples. Mesoporous carbon has even and tunable pore size, greater surface area, with excellent, electrical conductivity, wide availability and also have unique surface functionalization properties which make them significant sensing material now a days. Determination of prasugrel was accomplished with mesoporous carbon/GCE sensor on square-wave and cyclic voltammetry. Effects of various environmental and instrumental parameters like effect of buffer, casting volume, solvent, and pH on peak signal have been optimized. The best results were obtained in 0.1% cetyltrimethylammonium bromide - aqueous 0.1 M potassium chloride–phosphate buffer (pH 5.3). The limit of detection and quantification of the pure drug was found to be 37.0 ng mL−1 and 110.0 ng mL−1 (with the correlation coefficient, r = 0.988 and the standard deviation, (S.D.) = 0.6 (n = 6), respectively. The fabricated sensor was efficaciously validated by the determination of the drug in pharmaceutical formulation. Recoveries obtained were 97.84–99.37%.
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