Details
| Original language | English |
|---|---|
| Pages (from-to) | 6123-6130 |
| Number of pages | 8 |
| Journal | ACS Applied Nano Materials |
| Volume | 1 |
| Issue number | 11 |
| Early online date | 26 Oct 2018 |
| Publication status | Published - 26 Nov 2018 |
Abstract
In this article, we demonstrate the fabrication of tailored multicomponent cryoaerogels from colloidal nanoparticles via the cryogelation method. With this method, it is possible to control the amount of components very precisely. Furthermore, the microscopic distribution of the different nanoparticle components in the resulting monolithic structure is shown to be adjustable by simply mixing calculated amounts of colloidal nanoparticle solutions with a suitable surface charge. We focus on titania cryoaerogels due to their potential for optical applications and investigate the properties of synthesized titania-gold cryoaerogels in dependency of the composition. In addition, titania-platinum cryoaerogels were tested for photocatalytic applications such as hydrogen evolution and showed a significant increase in performance and stability compared to their respective colloidal solutions. While showing comparable results for hydrogen evolution with aerogels as reported in literature, the fabrication is much faster and less complex and therefore might enable future industrial application.
Keywords
- aerogel, colloidal nanoparticles, cryoaerogelation, multicomponent, photocatalytic hydrogen evolution
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
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In: ACS Applied Nano Materials, Vol. 1, No. 11, 26.11.2018, p. 6123-6130.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Tailoring Composition and Material Distribution in Multicomponent Cryoaerogels for Application in Photocatalysis
AU - Freytag, Axel
AU - Günnemann, Carsten
AU - Naskar, Suraj
AU - Hamid, Saher
AU - Lübkemann, Franziska
AU - Bahnemann, Detlef
AU - Bigall, Nadja C.
PY - 2018/11/26
Y1 - 2018/11/26
N2 - In this article, we demonstrate the fabrication of tailored multicomponent cryoaerogels from colloidal nanoparticles via the cryogelation method. With this method, it is possible to control the amount of components very precisely. Furthermore, the microscopic distribution of the different nanoparticle components in the resulting monolithic structure is shown to be adjustable by simply mixing calculated amounts of colloidal nanoparticle solutions with a suitable surface charge. We focus on titania cryoaerogels due to their potential for optical applications and investigate the properties of synthesized titania-gold cryoaerogels in dependency of the composition. In addition, titania-platinum cryoaerogels were tested for photocatalytic applications such as hydrogen evolution and showed a significant increase in performance and stability compared to their respective colloidal solutions. While showing comparable results for hydrogen evolution with aerogels as reported in literature, the fabrication is much faster and less complex and therefore might enable future industrial application.
AB - In this article, we demonstrate the fabrication of tailored multicomponent cryoaerogels from colloidal nanoparticles via the cryogelation method. With this method, it is possible to control the amount of components very precisely. Furthermore, the microscopic distribution of the different nanoparticle components in the resulting monolithic structure is shown to be adjustable by simply mixing calculated amounts of colloidal nanoparticle solutions with a suitable surface charge. We focus on titania cryoaerogels due to their potential for optical applications and investigate the properties of synthesized titania-gold cryoaerogels in dependency of the composition. In addition, titania-platinum cryoaerogels were tested for photocatalytic applications such as hydrogen evolution and showed a significant increase in performance and stability compared to their respective colloidal solutions. While showing comparable results for hydrogen evolution with aerogels as reported in literature, the fabrication is much faster and less complex and therefore might enable future industrial application.
KW - aerogel
KW - colloidal nanoparticles
KW - cryoaerogelation
KW - multicomponent
KW - photocatalytic hydrogen evolution
UR - http://www.scopus.com/inward/record.url?scp=85065624311&partnerID=8YFLogxK
U2 - 10.1021/acsanm.8b01333
DO - 10.1021/acsanm.8b01333
M3 - Article
AN - SCOPUS:85065624311
VL - 1
SP - 6123
EP - 6130
JO - ACS Applied Nano Materials
JF - ACS Applied Nano Materials
IS - 11
ER -