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光催化建筑材料实际规模下的经验性氮氧化物去除分析

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

作者信息

Kim Miyeon, Kim Hyunggeun, Park Jinchul

机构信息

SH Urban Research Center, Seoul Housing and Communities Corporation, Seoul 06336, Korea.

Department of Architectural Engineering, Chung-Aug University, Seoul 06974, Korea.

出版信息

Materials (Basel). 2021 Sep 30;14(19):5717. doi: 10.3390/ma14195717.

DOI:10.3390/ma14195717
PMID:34640104
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8510259/
Abstract

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·5 h) was twice as much as that of the ISO 22197-1 standard specification (2.03 μmol/150 cm·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.

摘要

通过在室内和室外环境下进行的两个实验，展示了光催化建筑材料的氮氧化物去除性能：（1）使用改进的ISO 22197-1方法进行光反应器测试，以评估建筑材料（如涂料、油漆和喷射混凝土）的NO去除性能；（2）使用两个放大到实际建筑材料尺寸的样本进行水洗测试，并在实验室中人工使其暴露于氮氧化物中，以分析氮氧化物去除性能。对于（1），分析了室外环境的紫外线照射情况，并在室内实验室中在与室外条件相同的紫外线照射下进行实验。对应用于韩国首尔实际建筑的建筑材料进行了光反应器测试。在（2）中，通过应用ISO 22197-1标准的改进方法，将放大后的样本用于现场实验。在晴天，实际环境中的氮氧化物去除性能（3.12 - 4.76 μmol/150 cm·5 h）是ISO 22197-1标准规格（2.03 μmol/150 cm·5 h）的两倍。水洗测试结果表明，普通水性漆的氮氧化物去除量为3.88 μmol，而光催化漆的去除量优于14.13 μmol。

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