Details
| Original language | English |
|---|---|
| Article number | 2301076 |
| Number of pages | 8 |
| Journal | Advanced materials interfaces |
| Volume | 11 |
| Issue number | 18 |
| Publication status | Published - 26 Jun 2024 |
Abstract
In semiconductor-metal hybrid nanoparticles, excited charge carriers can be separated efficiently by transferring the electron to the metal, because the Fermi level is located within the bandgap of the semiconductor. Besides charge carrier separation, the catalytically active surface of the metal enables the use of these charge carriers for further reactions. Due to limited colloidal stability, the application of nanoparticles in solution is challenging. To circumvent these difficulties, the destabilization can be used to build monolithic 3D (non-ordered) gel-like structures with retained high surface area and an ensured diffusion within the network. Here, the resulting nanoparticle-based hydrogels of CdSe/CdS/Pt nanoparticles show photocatalytic hydrogen production rates up to 58 (mmol(H2))/(g∙h). Due to the self-supporting network structure, colloidal stability is unnecessary, and the applicability is improved. By simply mixing semiconductor and semiconductor–metal hybrid nanoparticles before gelation, the synthesis of the gels allows the reduction of the metal content, which further tunes the photocatalyst.
Keywords
- charge carrier separation, NP-based hydrogels, photocatalysis, photocatalytic hydrogen production, semiconductor–metal hybrid
ASJC Scopus subject areas
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
Sustainable Development Goals
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In: Advanced materials interfaces, Vol. 11, No. 18, 2301076, 26.06.2024.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Semiconductor-Metal Hybrid Nanoparticle-Based Hydrogels
T2 - Efficient Photocatalysts for Hydrogen Evolution Reaction
AU - Schlenkrich, Jakob
AU - Pluta, Denis
AU - Graf, Rebecca T.
AU - Wesemann, Christoph
AU - Lübkemann-Warwas, Franziska
AU - Bigall, Nadja C.
N1 - Publisher Copyright: © 2024 The Authors. Advanced Materials Interfaces published by Wiley-VCH GmbH.
PY - 2024/6/26
Y1 - 2024/6/26
N2 - In semiconductor-metal hybrid nanoparticles, excited charge carriers can be separated efficiently by transferring the electron to the metal, because the Fermi level is located within the bandgap of the semiconductor. Besides charge carrier separation, the catalytically active surface of the metal enables the use of these charge carriers for further reactions. Due to limited colloidal stability, the application of nanoparticles in solution is challenging. To circumvent these difficulties, the destabilization can be used to build monolithic 3D (non-ordered) gel-like structures with retained high surface area and an ensured diffusion within the network. Here, the resulting nanoparticle-based hydrogels of CdSe/CdS/Pt nanoparticles show photocatalytic hydrogen production rates up to 58 (mmol(H2))/(g∙h). Due to the self-supporting network structure, colloidal stability is unnecessary, and the applicability is improved. By simply mixing semiconductor and semiconductor–metal hybrid nanoparticles before gelation, the synthesis of the gels allows the reduction of the metal content, which further tunes the photocatalyst.
AB - In semiconductor-metal hybrid nanoparticles, excited charge carriers can be separated efficiently by transferring the electron to the metal, because the Fermi level is located within the bandgap of the semiconductor. Besides charge carrier separation, the catalytically active surface of the metal enables the use of these charge carriers for further reactions. Due to limited colloidal stability, the application of nanoparticles in solution is challenging. To circumvent these difficulties, the destabilization can be used to build monolithic 3D (non-ordered) gel-like structures with retained high surface area and an ensured diffusion within the network. Here, the resulting nanoparticle-based hydrogels of CdSe/CdS/Pt nanoparticles show photocatalytic hydrogen production rates up to 58 (mmol(H2))/(g∙h). Due to the self-supporting network structure, colloidal stability is unnecessary, and the applicability is improved. By simply mixing semiconductor and semiconductor–metal hybrid nanoparticles before gelation, the synthesis of the gels allows the reduction of the metal content, which further tunes the photocatalyst.
KW - charge carrier separation
KW - NP-based hydrogels
KW - photocatalysis
KW - photocatalytic hydrogen production
KW - semiconductor–metal hybrid
UR - http://www.scopus.com/inward/record.url?scp=85188847368&partnerID=8YFLogxK
U2 - 10.1002/admi.202301076
DO - 10.1002/admi.202301076
M3 - Article
AN - SCOPUS:85188847368
VL - 11
JO - Advanced materials interfaces
JF - Advanced materials interfaces
SN - 2196-7350
IS - 18
M1 - 2301076
ER -