Cargando…

Empirical NOx Removal Analysis of Photocatalytic Construction Materials at Real-Scale

The NOx removal performance of photocatalytic construction materials is demonstrated using two experiments under indoor and outdoor environments: (1) A photoreactor test was conducted to assess the NO removal performance of construction materials (e.g., coatings, paints and shotcrete) using a modifi...

Descripción completa

Detalles Bibliográficos
Autores principales: Kim, Miyeon, Kim, Hyunggeun, Park, Jinchul
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8510259/
https://www.ncbi.nlm.nih.gov/pubmed/34640104
http://dx.doi.org/10.3390/ma14195717
_version_ 1784582534406864896
author Kim, Miyeon
Kim, Hyunggeun
Park, Jinchul
author_facet Kim, Miyeon
Kim, Hyunggeun
Park, Jinchul
author_sort Kim, Miyeon
collection PubMed
description The NOx removal performance of photocatalytic construction materials is demonstrated using two experiments under indoor and outdoor environments: (1) A photoreactor test was conducted to assess the NO removal performance of construction materials (e.g., coatings, paints and shotcrete) using a modified ISO 22197-1 method; (2) A water washing test was conducted using two specimens enlarged to the size of actual building materials and artificially exposed to NOx in a laboratory to analyze NOx removal performance. For (1), the UV irradiation of the outdoor environment was analyzed and the experiment was conducted in an indoor laboratory under UV irradiation identical to that of the outdoor condition. Photoreactor tests were conducted on construction materials applied to actual buildings located in Seoul, South Korea. In (2), the enlarged specimen was used for a field experiment by applying a modified method from the ISO 22197-1 standard. On sunny days, the NOx removal performance (3.12–4.76 μmol/150 cm(2)·5 h) was twice as much as that of the ISO 22197-1 standard specification (2.03 μmol/150 cm(2)·5 h) in the real-world. The washing water test results indicated that general aqueous paint achieved a NOx removal of 3.88 μmol, whereas photocatalytic paint was superior to 14.13 μmol.
format Online
Article
Text
id pubmed-8510259
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-85102592021-10-13 Empirical NOx Removal Analysis of Photocatalytic Construction Materials at Real-Scale Kim, Miyeon Kim, Hyunggeun Park, Jinchul Materials (Basel) Article The NOx removal performance of photocatalytic construction materials is demonstrated using two experiments under indoor and outdoor environments: (1) A photoreactor test was conducted to assess the NO removal performance of construction materials (e.g., coatings, paints and shotcrete) using a modified ISO 22197-1 method; (2) A water washing test was conducted using two specimens enlarged to the size of actual building materials and artificially exposed to NOx in a laboratory to analyze NOx removal performance. For (1), the UV irradiation of the outdoor environment was analyzed and the experiment was conducted in an indoor laboratory under UV irradiation identical to that of the outdoor condition. Photoreactor tests were conducted on construction materials applied to actual buildings located in Seoul, South Korea. In (2), the enlarged specimen was used for a field experiment by applying a modified method from the ISO 22197-1 standard. On sunny days, the NOx removal performance (3.12–4.76 μmol/150 cm(2)·5 h) was twice as much as that of the ISO 22197-1 standard specification (2.03 μmol/150 cm(2)·5 h) in the real-world. The washing water test results indicated that general aqueous paint achieved a NOx removal of 3.88 μmol, whereas photocatalytic paint was superior to 14.13 μmol. MDPI 2021-09-30 /pmc/articles/PMC8510259/ /pubmed/34640104 http://dx.doi.org/10.3390/ma14195717 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Kim, Miyeon
Kim, Hyunggeun
Park, Jinchul
Empirical NOx Removal Analysis of Photocatalytic Construction Materials at Real-Scale
title Empirical NOx Removal Analysis of Photocatalytic Construction Materials at Real-Scale
title_full Empirical NOx Removal Analysis of Photocatalytic Construction Materials at Real-Scale
title_fullStr Empirical NOx Removal Analysis of Photocatalytic Construction Materials at Real-Scale
title_full_unstemmed Empirical NOx Removal Analysis of Photocatalytic Construction Materials at Real-Scale
title_short Empirical NOx Removal Analysis of Photocatalytic Construction Materials at Real-Scale
title_sort empirical nox removal analysis of photocatalytic construction materials at real-scale
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8510259/
https://www.ncbi.nlm.nih.gov/pubmed/34640104
http://dx.doi.org/10.3390/ma14195717
work_keys_str_mv AT kimmiyeon empiricalnoxremovalanalysisofphotocatalyticconstructionmaterialsatrealscale
AT kimhyunggeun empiricalnoxremovalanalysisofphotocatalyticconstructionmaterialsatrealscale
AT parkjinchul empiricalnoxremovalanalysisofphotocatalyticconstructionmaterialsatrealscale