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Open AccessArticle

Microwave Synthesis of Gold Nanoclusters with Garlic Extract Modifications for the Simple and Sensitive Detection of Lead Ions

Department of Applied Chemistry, National Chi Nan University, Nantou 545, Taiwan
Department of Medical Applied Chemistry, Chung Shan Medical University, Taichung 402, Taiwan
Department of Medical Education, Chung Shan Medical University Hospital, Taichung 402, Taiwan
Authors to whom correspondence should be addressed.
Nanomaterials 2020, 10(1), 94;
Received: 29 November 2019 / Revised: 30 December 2019 / Accepted: 31 December 2019 / Published: 2 January 2020
(This article belongs to the Section Synthesis, Interfaces and Nanostructures)
Novel bovine serum albumin (BSA)-gold nanoclusters with garlic extract modifications (mw_G-BSA-AuNCs) were prepared through microwave-assisted rapid synthesis. The modified nanoclusters were characterized and used for the simple and sensitive detection of Pb2+ ions. Both turn-on and turn-off methods were used and compared for Pb2+ ion detection. For Pb2+ ions, the preparation time for the modified nanoclusters was 10 min, and the detection time for the nanoclusters was 6 min. The modified nanoclusters were stable, and their fluorescence intensities changed by less than 10% in 60 days. The detection limit and linear range for the “off-on” method of mw_G-BSA-AuNCs for Pb2+ ion detection were 0.28 and 1–20 nM, respectively. The recoveries of the mw_G-BSA-AuNCs probe used for the detection of the Pb(II) ion in tap water ranged from 93.8% to 102.2%, with an average of 97.1%. The “off-on” method of mw_G-BSA-AuNCs can provide a lower detection limit, higher selectivity, and better recovery than the commonly used “turn-off” methods of mw_BSA-AuNCs for Pb2+ ion detection. The proposed method is superior to other methods proposed from 2018 to 2019 because it can provide a shorter preparation time and a lower detection limit with good selectivity. The microwave-assisted novel compound, mw_G-BSA-AuNCs, can be rapidly synthesized in a green manner and can provide a low detection limit, good selectivity, and a simple and fast reaction for Pb2+ ion detection. View Full-Text
Keywords: BSA-gold nanoclusters (BSA-AuNCs); garlic extract; lead ions BSA-gold nanoclusters (BSA-AuNCs); garlic extract; lead ions
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MDPI and ACS Style

Ryavanaki, L.; Tsai, H.; Fuh, C.B. Microwave Synthesis of Gold Nanoclusters with Garlic Extract Modifications for the Simple and Sensitive Detection of Lead Ions. Nanomaterials 2020, 10, 94.

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