File:Sustainable cork-based ecoceramics made of ceria (CeO2) which can split water to make hydrogen fuel with concentrated solar energy.tif
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Captions
Captions
Cork-based biomimetic ceria (CeO2) ecoceramics, a pure ceramic but with the hexagonal microstructure of the sustainable cork template, used for splitting water with concentrated solar energy
Summary edit
| Description |
English: This is a cork-based biomimetic ("copying nature") ecoceramic ("Environmentally Conscious Ceramic") made of ceria (CeO2). This is a pure ceramic, but with the hexagonal microstructure of the cork template, which is very porous and made of regular hexagonal cells ~20 microns in diameter (by comparison, a human hair is ~100 microns diameter). Cork is a sustainable material, as the bark is harvested without damaging the tree, which lives on as a carbon sink for over 200 years. The cork is then converted into the ceria ecoceramic. The image shows, from right to left, the ceria ecoceramic made of hexagonal cells, a single hexagonal cell, and the tiny ceria nanoparticles of which the ecoceramic is actually formed, with scale bars in each image. We are using this to split water to make renewable hydrogen fuel with concentrated solar energy via a solar thermochemical process.
(False colour, as this is a scanning electron microscope (SEM) image)
Português: Esta é uma biomimética ("copiar a natureza") ecocerâmica ("Cerâmica Ambientalmente Consciente") à base de cortiça, feita de ceria (CeO2). Esta é uma cerâmica pura, mas com a microestrutura hexagonal de cortiça, que é muita porosa e feita de células hexagonais regulares ~ 20 mícron de diâmetro (em comparação, um cabelo humano é ~ 100 mícron de diâmetro). A cortiça é um material sustentável, porque a casca é colhida sem danificar a árvore, que vive como um "dissipador de carbono" por mais de 200 anos. A cortiça é então convertida na ecocerâmica de ceria. A imagem mostra, da direita para a esquerda, a ceria ecocerâmica feita de células hexagonais, uma única célula hexagonal, e as minúsculas nanopartículas de ceria do que a ecocerâmica é realmente feita, com barras de escala em cada imagem. Estamos usando isso para dividir a água para fazer combustível de hidrogênio renovável com energia solar concentrada, através de um processo termoquímico solar.
(Cor falsa, pois esta é uma imagem de microscópio eletrônico de varredura (MEV)) |
| Date | |
| Source | Own work |
| Author | Rob Pullar |
By Dr. Robert C. Pullar and Dr. Rui M. Novais, University of Aveiro, Portugal
Licensing edit
I, the copyright holder of this work, hereby publish it under the following license:
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This image was uploaded as part of Wiki Science Competition 2019. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 13:25, 23 November 2019 |  | 2,268 × 1,358 (4.12 MB) | Rob Pullar (talk | contribs) | User created page with UploadWizard |
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