Noble metal@metal oxide semiconductor core@shell nano-architectures as a new platform for gas sensor applications
- Authors
- Rai, Prabhakar; Majhi, Sanjit Manohar; Yu, Yeon-Tae; Lee, Jong-Heun
- Issue Date
- 2015
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- RSC ADVANCES, v.5, no.93, pp.76229 - 76248
- Indexed
- SCIE
SCOPUS
- Journal Title
- RSC ADVANCES
- Volume
- 5
- Number
- 93
- Start Page
- 76229
- End Page
- 76248
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/96297
- DOI
- 10.1039/c5ra14322e
- ISSN
- 2046-2069
- Abstract
- Among the complex nanostructures, core@shell nanomaterials are gaining much attention, as the physical properties of the core and shell can be easily and separately tuned. Two materials in the form of core@shell nanostructures combine their individual properties and also bring unique properties in comparison with single-component materials. Recently, the formation of core@shell nanoparticles (NPs) having noble metals (Au, Ag, Pt and Pd) as a core and metal oxides semiconductors (TiO2, SnO2, and Cu2O) as a shell has attracted immense research interest in sensing, photo-catalysis, dye-sensitized solar cells and so on due to tailorability and functionality in the core and shell. Therefore, an overview of the advances in this exciting field of noble metals@metal oxides core@shell NPs has been presented in this feature article. It includes systematic synthesis approaches of noble metal@metal oxide core@shell NPs and their applications in the field of gas sensors, which is based on the literature and our own recent work. The synthesis of core@shell NPs with controllable sizes, compositions, morphologies, structures and functionalities has been presented considering the advantages and the demerits of the process. Applications of these core@shell NPs in the areas of gas sensing and their sensing mechanisms are discussed. The future prospects of such core@shell nanostructures for gas sensing applications are also highlighted.
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