Hydrothermal Synthesis and Photocatalytic Properties of NaTaO3
碩士 === 國立高雄科技大學 === 微電子工程系 === 107 === In this study, NaTaO3 photocatalyst materials were prepared by hydrothermal method. Hydrothermal synthesis was carried out at 200 °C using NaOH and Ta2O5 as precursors for 1, 2, 3, 4, 8 and 12 h, and labeled as 1H, 2H, 3H, 4H, 8H, and 12H, respectively. XRD and...
Main Authors: | , |
---|---|
Other Authors: | |
Format: | Others |
Language: | zh-TW |
Published: |
2019
|
Online Access: | http://ndltd.ncl.edu.tw/handle/d89r7p |
id |
ndltd-TW-107NKUS0428010 |
---|---|
record_format |
oai_dc |
spelling |
ndltd-TW-107NKUS04280102019-09-03T03:43:16Z http://ndltd.ncl.edu.tw/handle/d89r7p Hydrothermal Synthesis and Photocatalytic Properties of NaTaO3 以水熱法製備鉭酸鈉並探討其光觸媒的特性與應用 LI, JUN-HONG 李俊宏 碩士 國立高雄科技大學 微電子工程系 107 In this study, NaTaO3 photocatalyst materials were prepared by hydrothermal method. Hydrothermal synthesis was carried out at 200 °C using NaOH and Ta2O5 as precursors for 1, 2, 3, 4, 8 and 12 h, and labeled as 1H, 2H, 3H, 4H, 8H, and 12H, respectively. XRD and SEM were used to characterize structure and morphology of samples. Humidity and organic-dye-degradation properties of these materials were also analyzed in this work. By changing the parameters of the synthesis time, it is found that the particles become larger as the synthesis time increases. From XRD structural analysis the prepared NaTaO3 samples have the orthorhombic structure. The residual Ta2O5 is obvious in sample(for a shorter synthesis time). When the synthesis time increases, it is found that the residual Ta2O5 is obviously decreased. The organic-dye-degradation characteristic of sample 4H for 5 hours using UV lamp can reach 99%, and using white LED light it can still reach 95%. The sample 8H and 12H with thicker shell of NaTaO3 were found to have lower degradation rates. Humidity devices were made by pasted the NaTaO3 powder on interdigitated electrodes. The sensing element of sample 4H reveals a good response time of 5s and recovery time of 16s at 95% humidity. In this work, the sample 4H has better photocatalytic and humidity sensing effects. YEH, MIN-YEN 葉旻彥 2019 學位論文 ; thesis 48 zh-TW |
collection |
NDLTD |
language |
zh-TW |
format |
Others
|
sources |
NDLTD |
description |
碩士 === 國立高雄科技大學 === 微電子工程系 === 107 === In this study, NaTaO3 photocatalyst materials were prepared by hydrothermal method. Hydrothermal synthesis was carried out at 200 °C using NaOH and Ta2O5 as precursors for 1, 2, 3, 4, 8 and 12 h, and labeled as 1H, 2H, 3H, 4H, 8H, and 12H, respectively. XRD and SEM were used to characterize structure and morphology of samples. Humidity and organic-dye-degradation properties of these materials were also analyzed in this work.
By changing the parameters of the synthesis time, it is found that the particles become larger as the synthesis time increases. From XRD structural analysis the prepared NaTaO3 samples have the orthorhombic structure. The residual Ta2O5 is obvious in sample(for a shorter synthesis time). When the synthesis time increases, it is found that the residual Ta2O5 is obviously decreased.
The organic-dye-degradation characteristic of sample 4H for 5 hours using UV lamp can reach 99%, and using white LED light it can still reach 95%. The sample 8H and 12H with thicker shell of NaTaO3 were found to have lower degradation rates.
Humidity devices were made by pasted the NaTaO3 powder on interdigitated electrodes. The sensing element of sample 4H reveals a good response time of 5s and recovery time of 16s at 95% humidity. In this work, the sample 4H has better photocatalytic and humidity sensing effects.
|
author2 |
YEH, MIN-YEN |
author_facet |
YEH, MIN-YEN LI, JUN-HONG 李俊宏 |
author |
LI, JUN-HONG 李俊宏 |
spellingShingle |
LI, JUN-HONG 李俊宏 Hydrothermal Synthesis and Photocatalytic Properties of NaTaO3 |
author_sort |
LI, JUN-HONG |
title |
Hydrothermal Synthesis and Photocatalytic Properties of NaTaO3 |
title_short |
Hydrothermal Synthesis and Photocatalytic Properties of NaTaO3 |
title_full |
Hydrothermal Synthesis and Photocatalytic Properties of NaTaO3 |
title_fullStr |
Hydrothermal Synthesis and Photocatalytic Properties of NaTaO3 |
title_full_unstemmed |
Hydrothermal Synthesis and Photocatalytic Properties of NaTaO3 |
title_sort |
hydrothermal synthesis and photocatalytic properties of natao3 |
publishDate |
2019 |
url |
http://ndltd.ncl.edu.tw/handle/d89r7p |
work_keys_str_mv |
AT lijunhong hydrothermalsynthesisandphotocatalyticpropertiesofnatao3 AT lǐjùnhóng hydrothermalsynthesisandphotocatalyticpropertiesofnatao3 AT lijunhong yǐshuǐrèfǎzhìbèitǎnsuānnàbìngtàntǎoqíguāngchùméidetèxìngyǔyīngyòng AT lǐjùnhóng yǐshuǐrèfǎzhìbèitǎnsuānnàbìngtàntǎoqíguāngchùméidetèxìngyǔyīngyòng |
_version_ |
1719242572158730240 |