Trace colorimetric detection of Pb2 + using plasmonic gold nanoparticles and silica-gold nanocomposites
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- 作者：Sheenam Thataia ; Parul Khuranaa ; b ; Surendra Prasadc ; prasad_su@usp.ac.fj" class="auth_mail" title="E-mail the corresponding author ; Sarvesh K. Sonid ; Dinesh Kumara ; dsbchoudhary2002@gmail.com" class="auth_mail" title="E-mail the corresponding author
- 关键词：Pb2 ; + colorimetric detection ; Plasmonic detection ; Core&ndash ; shell NCs ; Plasmonic nanoparticles ; Pb2 ; + ions
- 刊名：Microchemical Journal
- 出版年：2016
- 出版时间：January 2016
- 年：2016
- 卷：124
- 期：Complete
- 页码：104-110
- 全文大小：1055 K
文摘
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A novel method for visual detection of Pb2 + based on SiO2@Au nanocomposites (NCs) is developed.
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A sensitive method for the detection of aqueous Pb2 + ions using Au nanoparticles is developed.
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Plasmonic detection of Pb2 + is based on aggregation of AuNPs or SiO2@Au NCs in analyte presence.
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SiO2@Au NCs are ten times more sensitive as compared to AuNPs for the detection of Pb2 +.
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SERS materials; ~ 20 nm AuNPs and ~ 360 nm SiO2@Au NCs used for the development of nanosensor for Pb2 +