Fluorescent-tunable copper nanoclusters and their application in hexavalent chromium sensing
碩士 === 國立臺東大學 === 應用科學系 === 105 === In the previous literature, the metal nanoclusters are usually synthesized by a single ligand making the properties and applications of the nanomaterial limited by the nature of the ligand. In this study, we upgraded the synthetic strategy and developed the bi-lig...
Main Authors: | , |
---|---|
Other Authors: | |
Format: | Others |
Language: | zh-TW |
Published: |
2017
|
Online Access: | http://ndltd.ncl.edu.tw/handle/3wc627 |
id |
ndltd-TW-106NTTU5115001 |
---|---|
record_format |
oai_dc |
spelling |
ndltd-TW-106NTTU51150012019-05-15T23:39:47Z http://ndltd.ncl.edu.tw/handle/3wc627 Fluorescent-tunable copper nanoclusters and their application in hexavalent chromium sensing 螢光可調控式銅奈米團簇應用於檢測六價鉻 Yu-Syuan Lin 林裕軒 碩士 國立臺東大學 應用科學系 105 In the previous literature, the metal nanoclusters are usually synthesized by a single ligand making the properties and applications of the nanomaterial limited by the nature of the ligand. In this study, we upgraded the synthetic strategy and developed the bi-ligand copper nanoclusters (Cu NC). We discussed their fluorescence properties, and finally applied them to the detection of hexavalent chromium (Cr(VI)) in water. The bi-ligand Cu NC were synthesized from Cu2+ ions, thiosalicylic acid (TA) and cysteamine (CysA) through a simple one-pot method. The bi-ligand Cu NC not only have high quantum yield (> 18.9 %) and good photostability but also can been adjusted their fluorescence intensities and surface properties by changing the ratio of the two ligands. These advantages allow the bi-ligand Cu NC has a strong potential in the development of fluorescent probes. The fluorescent of the bi-ligand Cu NC can be quenched by Cr(VI) through an inner filter effect (IFE). The bi-ligand Cu NC can be applied to the detection of Cr(VI) with a wide linear range of 0.1 – 1000 μM and a low detection limit (LOD, signal-to-noise ratio = 3) of 0.03 μM is less than the guideline limit of the WHO, EU and TW (0.96 μM). Compared with other metal ions in the environment, the bi-ligand Cu NC have good selectivity for Cr(VI) that make it can been applied to the determination of Cr(VI) in mineral water samples. The recoveries were between 98.3 to 105.0 % and the relative standard deviations (RSD) were below 4.54% for three replicate measurements, suggesting the good repeatability of this method. Cho-Chun Hu Tai-Chia Chiu 胡焯淳 邱泰嘉 2017 學位論文 ; thesis 48 zh-TW |
collection |
NDLTD |
language |
zh-TW |
format |
Others
|
sources |
NDLTD |
description |
碩士 === 國立臺東大學 === 應用科學系 === 105 === In the previous literature, the metal nanoclusters are usually synthesized by a single ligand making the properties and applications of the nanomaterial limited by the nature of the ligand. In this study, we upgraded the synthetic strategy and developed the bi-ligand copper nanoclusters (Cu NC). We discussed their fluorescence properties, and finally applied them to the detection of hexavalent chromium (Cr(VI)) in water. The bi-ligand Cu NC were synthesized from Cu2+ ions, thiosalicylic acid (TA) and cysteamine (CysA) through a simple one-pot method. The bi-ligand Cu NC not only have high quantum yield (> 18.9 %) and good photostability but also can been adjusted their fluorescence intensities and surface properties by changing the ratio of the two ligands. These advantages allow the bi-ligand Cu NC has a strong potential in the development of fluorescent probes. The fluorescent of the bi-ligand Cu NC can be quenched by Cr(VI) through an inner filter effect (IFE). The bi-ligand Cu NC can be applied to the detection of Cr(VI) with a wide linear range of 0.1 – 1000 μM and a low detection limit (LOD, signal-to-noise ratio = 3) of 0.03 μM is less than the guideline limit of the WHO, EU and TW (0.96 μM). Compared with other metal ions in the environment, the bi-ligand Cu NC have good selectivity for Cr(VI) that make it can been applied to the determination of Cr(VI) in mineral water samples. The recoveries were between 98.3 to 105.0 % and the relative standard deviations (RSD) were below 4.54% for three replicate measurements, suggesting the good repeatability of this method.
|
author2 |
Cho-Chun Hu |
author_facet |
Cho-Chun Hu Yu-Syuan Lin 林裕軒 |
author |
Yu-Syuan Lin 林裕軒 |
spellingShingle |
Yu-Syuan Lin 林裕軒 Fluorescent-tunable copper nanoclusters and their application in hexavalent chromium sensing |
author_sort |
Yu-Syuan Lin |
title |
Fluorescent-tunable copper nanoclusters and their application in hexavalent chromium sensing |
title_short |
Fluorescent-tunable copper nanoclusters and their application in hexavalent chromium sensing |
title_full |
Fluorescent-tunable copper nanoclusters and their application in hexavalent chromium sensing |
title_fullStr |
Fluorescent-tunable copper nanoclusters and their application in hexavalent chromium sensing |
title_full_unstemmed |
Fluorescent-tunable copper nanoclusters and their application in hexavalent chromium sensing |
title_sort |
fluorescent-tunable copper nanoclusters and their application in hexavalent chromium sensing |
publishDate |
2017 |
url |
http://ndltd.ncl.edu.tw/handle/3wc627 |
work_keys_str_mv |
AT yusyuanlin fluorescenttunablecoppernanoclustersandtheirapplicationinhexavalentchromiumsensing AT línyùxuān fluorescenttunablecoppernanoclustersandtheirapplicationinhexavalentchromiumsensing AT yusyuanlin yíngguāngkědiàokòngshìtóngnàimǐtuáncùyīngyòngyújiǎncèliùjiàluò AT línyùxuān yíngguāngkědiàokòngshìtóngnàimǐtuáncùyīngyòngyújiǎncèliùjiàluò |
_version_ |
1719152590895185920 |