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Incorporation of Pt Nanoparticles on the Surface of TeO₂-Branched Porous Si Nanowire Structures for Enhanced Room-Temperature Gas Sensing.
J Nanosci Nanotechnol 2019; 19(10):6647-6655JN

Abstract

A new gas sensor working in room temperature, which is compatible with silicon fabrication technology is presented. Porous silicon nanowires (NWs) were synthesized by metal-assisted chemical etching method and then TeO₂ NWs branches were attached to their stem by thermal evaporation of Te powders in the presence of air. Afterwards TeO₂ branched porous Si NWs were functionalized by Pt via sputtering followed by low temperature thermal annealing. Scanning electron microscopy, transmission electron microscopy and energy-dispersive X-ray spectroscopy collectively confirmed successful formation of TeO₂ branched porous Si NWs functionalized by Pt nanoparticles. Their gas sensing properties in the presence of CO, C6H6 and C7H8 were tested at room temperature, for Si wafer, pristine porous Si NWs, pristine TeO₂ branched porous Si NWs, and Pt functionalized TeO₂ branched porous Si NWs sensors. Pt functionalized TeO₂ branched porous Si NWs have higher responses to all tested gases than the other sensors. The origin of high response is discussed in detail. This new room temperature gas sensor can open a new aperture for development of gas sensors with minimum energy consumption which are compatible with silicon fabrication technology.

Authors+Show Affiliations

Division of Materials Science and Engineering, Hanyang University, Seoul 133-791, Republic of Korea.The Research Institute of Industrial Science, Hanyang University, Seoul 133-791, Republic of Korea.Department of Materials Science and Engineering, Inha University, Incheon 402-751, Republic of Korea.Department of Materials Science and Engineering, Inha University, Incheon 402-751, Republic of Korea.Division of Materials Science and Engineering, Hanyang University, Seoul 133-791, Republic of Korea.Department of Materials Science and Engineering, Inha University, Incheon 402-751, Republic of Korea.Division of Materials Science and Engineering, Hanyang University, Seoul 133-791, Republic of Korea.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31027005

Citation

Choi, Myung Sik, et al. "Incorporation of Pt Nanoparticles On the Surface of TeO₂-Branched Porous Si Nanowire Structures for Enhanced Room-Temperature Gas Sensing." Journal of Nanoscience and Nanotechnology, vol. 19, no. 10, 2019, pp. 6647-6655.
Choi MS, Mirzaei A, Bang JH, et al. Incorporation of Pt Nanoparticles on the Surface of TeO₂-Branched Porous Si Nanowire Structures for Enhanced Room-Temperature Gas Sensing. J Nanosci Nanotechnol. 2019;19(10):6647-6655.
Choi, M. S., Mirzaei, A., Bang, J. H., Na, H. G., Jin, C., Kim, S. S., & Kim, H. W. (2019). Incorporation of Pt Nanoparticles on the Surface of TeO₂-Branched Porous Si Nanowire Structures for Enhanced Room-Temperature Gas Sensing. Journal of Nanoscience and Nanotechnology, 19(10), pp. 6647-6655. doi:10.1166/jnn.2019.17091.
Choi MS, et al. Incorporation of Pt Nanoparticles On the Surface of TeO₂-Branched Porous Si Nanowire Structures for Enhanced Room-Temperature Gas Sensing. J Nanosci Nanotechnol. 2019 Oct 1;19(10):6647-6655. PubMed PMID: 31027005.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Incorporation of Pt Nanoparticles on the Surface of TeO₂-Branched Porous Si Nanowire Structures for Enhanced Room-Temperature Gas Sensing. AU - Choi,Myung Sik, AU - Mirzaei,Ali, AU - Bang,Jae Hoon, AU - Na,Han Gil, AU - Jin,Changhyun, AU - Kim,Sang Sub, AU - Kim,Hyoun Woo, PY - 2019/4/28/entrez PY - 2019/4/28/pubmed PY - 2019/4/28/medline SP - 6647 EP - 6655 JF - Journal of nanoscience and nanotechnology JO - J Nanosci Nanotechnol VL - 19 IS - 10 N2 - A new gas sensor working in room temperature, which is compatible with silicon fabrication technology is presented. Porous silicon nanowires (NWs) were synthesized by metal-assisted chemical etching method and then TeO₂ NWs branches were attached to their stem by thermal evaporation of Te powders in the presence of air. Afterwards TeO₂ branched porous Si NWs were functionalized by Pt via sputtering followed by low temperature thermal annealing. Scanning electron microscopy, transmission electron microscopy and energy-dispersive X-ray spectroscopy collectively confirmed successful formation of TeO₂ branched porous Si NWs functionalized by Pt nanoparticles. Their gas sensing properties in the presence of CO, C6H6 and C7H8 were tested at room temperature, for Si wafer, pristine porous Si NWs, pristine TeO₂ branched porous Si NWs, and Pt functionalized TeO₂ branched porous Si NWs sensors. Pt functionalized TeO₂ branched porous Si NWs have higher responses to all tested gases than the other sensors. The origin of high response is discussed in detail. This new room temperature gas sensor can open a new aperture for development of gas sensors with minimum energy consumption which are compatible with silicon fabrication technology. SN - 1533-4880 UR - https://www.unboundmedicine.com/medline/citation/31027005/Incorporation_of_Pt_Nanoparticles_on_the_Surface_of_TeO₂-Branched_Porous_Si_Nanowire_Structures_for_Enhanced_Room-Temperature_Gas_Sensing L2 - https://www.ingentaconnect.com/openurl?genre=article&issn=1533-4880&volume=19&issue=10&spage=6647&aulast=Choi DB - PRIME DP - Unbound Medicine ER -