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Macroporous copper with a complex hyperbolic morphology and superior mechanical properties was produced by replicating the remarkable form of a sea urchin skeletal plate using templated electrochemical deposition.
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http://dx.doi.org/10.1039/b707469g | DOI Listing |
Materials (Basel)
August 2024
Department of Basic Chemical Sciences, Wroclaw Medical University, Borowska 211 A, 50-556 Wrocław, Poland.
In order to systematize and expand knowledge about copper-containing composite materials as hybrid ion exchangers, in this study, fine metallic copper particles were dispersed within the matrix of a carboxyl cation exchanger (CCE) with a macroporous and gel-type structure thanks to the reduction of CuO particles precipitated within the matrix earlier. It was possible to introduce as much as 22.0 wt% Cu into a gel-type polymeric carrier (G/H#Cu) when an ascorbic acid solution was used to act as a reducer of CuO and a reagent transforming the functional groups from Na into the H form.
View Article and Find Full Text PDFNanoscale Adv
July 2024
Department of Data Science, Friedrich-Alexander-Universität Erlangen-Nürnberg Cauerstr. 11 91058 Erlangen Germany
Compressed sensing is an image reconstruction technique to achieve high-quality results from limited amount of data. In order to achieve this, it utilizes prior knowledge about the samples that shall be reconstructed. Focusing on image reconstruction in nanotomography, this work proposes enhancements by including additional problem-specific knowledge.
View Article and Find Full Text PDFJ Environ Manage
July 2024
Chemical Engineering Faculty, Sahand University of Technology, P.O.Box 51335-1996, Sahand New Town, Tabriz, Iran; Reactor and Catalysis Research Center (RCRC), Sahand University of Technology, P.O.Box 51335-1996, Sahand New Town, Tabriz, Iran.
Herein, the novel double Z-scheme Ag-AgO/CuO-CuFeO magnetic nanophotocatalyst with nanosphere-on-nanosheet-like morphology was synthesized via the corona-plasma-assisted starch-templated microwave-combustion-precipitation method to remove the dye pollutants. The CuO-CuFeO meso/macroporous nanophotocatalyst was synthesized using a one-pot-stage combustion-microwave process with/without starch as a hard-template. Subsequently, surface modification was carried out by DC corona-plasma discharge technology at various voltages, namely 500, 1000 and 1500 V.
View Article and Find Full Text PDFNanoscale Adv
May 2024
Surface Science Laboratory, Department of Materials and Earth Sciences, Technical University of Darmstadt Otto-Berndt-Straße 3 64287 Darmstadt Germany
Copper oxides are promising photocathode materials for solar hydrogen production due to their narrow optical band gap energy allowing broad visible light absorption. However, they suffer from severe photocorrosion upon illumination, mainly due to copper reduction. Nanostructuring has been proven to enhance the photoresponse of CuO photocathodes; however, there is a lack of precise structural control on the nanoscale upon sol-gel synthesis and calcination for achieving optically transparent CuO thin film photoabsorbers.
View Article and Find Full Text PDFiScience
June 2024
Institute of Chemistry, University of Tartu, Ravila 14a, 50411 Tartu, Estonia.
Virucidal filter materials were prepared by electrospinning a solution of 28 wt % poly(vinylidene difluoride) in N,N-dimethylacetamide without and with the addition of 0.25 wt %, 0.75 wt %, 2.
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