Details
Originalsprache | Englisch |
---|---|
Seitenumfang | 8 |
Fachzeitschrift | Advanced materials interfaces |
Frühes Online-Datum | 27 März 2024 |
Publikationsstatus | Elektronisch veröffentlicht (E-Pub) - 27 März 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.
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in: Advanced materials interfaces, 27.03.2024.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › 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 - Funding Information: This work was funded by the German Research Foundation (Deutsche Forschungsgemeinschaft, DFG) with the grant agreement BI 1708/4‐3 and under Germany's excellence strategy within the cluster of excellence PhoenixD (EXC 2122, project ID 390833453). R.T.G. is thankful for financial support from the Hannover School for Nanotechnology (hsn). The research was supported by the Cluster of Excellence CUI: Advanced Imaging of Matter (EXC 2056) of the Deutsche Forschungsgemeinschaft (DFG) with the project ID 390715994 Furthermore, the used TEM for the shown images was provided by the Laboratory of Nano and Quantum Engineering. Moreover, the authors thank Armin Feldhoff and Jürgen Caro for providing the SEM facility. The authors acknowledge financial support from the Open Access Publication Fund of Universität Hamburg. Grammarly was used to improve grammar and typesetting.
PY - 2024/3/27
Y1 - 2024/3/27
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
JO - Advanced materials interfaces
JF - Advanced materials interfaces
SN - 2196-7350
ER -