Cargando…

Etched p-Type Si Nanowires for Efficient Ozone Decomposition

High concentration ozone can damage greatly to the respiratory, cardiovascular systems, and fertility of people, and catalytic decomposition is an important strategy to reduce its harm. However, it remains a challenge to develop efficient ozone decomposition catalysts with high efficiency. In this s...

Descripción completa

Detalles Bibliográficos
Autores principales: Li, Xuan, Luo, Linqu, Bi, Yicheng, Wang, Anqi, Chen, Yunfa, Han, Ning, Wang, Fengyun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer US 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6904714/
https://www.ncbi.nlm.nih.gov/pubmed/31823089
http://dx.doi.org/10.1186/s11671-019-3205-6
_version_ 1783478044591128576
author Li, Xuan
Luo, Linqu
Bi, Yicheng
Wang, Anqi
Chen, Yunfa
Han, Ning
Wang, Fengyun
author_facet Li, Xuan
Luo, Linqu
Bi, Yicheng
Wang, Anqi
Chen, Yunfa
Han, Ning
Wang, Fengyun
author_sort Li, Xuan
collection PubMed
description High concentration ozone can damage greatly to the respiratory, cardiovascular systems, and fertility of people, and catalytic decomposition is an important strategy to reduce its harm. However, it remains a challenge to develop efficient ozone decomposition catalysts with high efficiency. In this study, p- and n-type silicon nanowires (Si NWs) are fabricated by wet chemical etching method and are firstly applied to catalytic decompose ozone at room temperature. The p-type Si NWs exhibit 90% ozone (20 ppm O(3)/air) decomposition efficiency with great stability, which is much better than that of n-type Si NWs (50%) with same crystal orientation, similar diameter and specific surface area. The catalytic property difference is mainly attributed to the more delocalization holes in the p-type Si NWs, which can accelerate the desorption of ozone decomposition intermediates (i.e., adsorbed oxygen species).
format Online
Article
Text
id pubmed-6904714
institution National Center for Biotechnology Information
language English
publishDate 2019
publisher Springer US
record_format MEDLINE/PubMed
spelling pubmed-69047142019-12-26 Etched p-Type Si Nanowires for Efficient Ozone Decomposition Li, Xuan Luo, Linqu Bi, Yicheng Wang, Anqi Chen, Yunfa Han, Ning Wang, Fengyun Nanoscale Res Lett Nano Express High concentration ozone can damage greatly to the respiratory, cardiovascular systems, and fertility of people, and catalytic decomposition is an important strategy to reduce its harm. However, it remains a challenge to develop efficient ozone decomposition catalysts with high efficiency. In this study, p- and n-type silicon nanowires (Si NWs) are fabricated by wet chemical etching method and are firstly applied to catalytic decompose ozone at room temperature. The p-type Si NWs exhibit 90% ozone (20 ppm O(3)/air) decomposition efficiency with great stability, which is much better than that of n-type Si NWs (50%) with same crystal orientation, similar diameter and specific surface area. The catalytic property difference is mainly attributed to the more delocalization holes in the p-type Si NWs, which can accelerate the desorption of ozone decomposition intermediates (i.e., adsorbed oxygen species). Springer US 2019-12-10 /pmc/articles/PMC6904714/ /pubmed/31823089 http://dx.doi.org/10.1186/s11671-019-3205-6 Text en © The Author(s). 2019 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
spellingShingle Nano Express
Li, Xuan
Luo, Linqu
Bi, Yicheng
Wang, Anqi
Chen, Yunfa
Han, Ning
Wang, Fengyun
Etched p-Type Si Nanowires for Efficient Ozone Decomposition
title Etched p-Type Si Nanowires for Efficient Ozone Decomposition
title_full Etched p-Type Si Nanowires for Efficient Ozone Decomposition
title_fullStr Etched p-Type Si Nanowires for Efficient Ozone Decomposition
title_full_unstemmed Etched p-Type Si Nanowires for Efficient Ozone Decomposition
title_short Etched p-Type Si Nanowires for Efficient Ozone Decomposition
title_sort etched p-type si nanowires for efficient ozone decomposition
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6904714/
https://www.ncbi.nlm.nih.gov/pubmed/31823089
http://dx.doi.org/10.1186/s11671-019-3205-6
work_keys_str_mv AT lixuan etchedptypesinanowiresforefficientozonedecomposition
AT luolinqu etchedptypesinanowiresforefficientozonedecomposition
AT biyicheng etchedptypesinanowiresforefficientozonedecomposition
AT wanganqi etchedptypesinanowiresforefficientozonedecomposition
AT chenyunfa etchedptypesinanowiresforefficientozonedecomposition
AT hanning etchedptypesinanowiresforefficientozonedecomposition
AT wangfengyun etchedptypesinanowiresforefficientozonedecomposition