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Detection of
Volatile Organic Compound Gas Using Localized Surface Plasmon Resonance of Gold Nanoparticles
(Pengesanan Gas Sebatian Organik Mudah Meruap Menggunakan Resonans Plasmon Permukaan Tempatan Nanozarah Emas)
Sri Nengsih, Akrajas Ali Umar* & Muhamad Mat Salleh
Institute of Microengineering and Nanoelectronic (IMEN), Universiti Kebangsaan Malaysia
43600, Bangi, Selangor D.E., Malaysia
Muhammad Yahaya
School of Applied Physics, Faculty of Science and Technology
Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor D.E., Malaysia
Received: 15 May 2010 / Accepted: 3 September 2010
ABSTRACT
This paper reports on the
detection of several organic vapors using the unique characteristic of
localized surface plasmon resonance (LSPR)
gold nanoparticles. Gold nanoparticles on quartz substrate were prepared using seed mediated growth method. In a
typical process, gold nanoparticles with average size
ca. 36 nm were obtained to densely grown on the substrate. Detection of gas was
based on the change in the LSPR of the gold nanoparticles film upon the exposure to the gas sample. It was found that gold nanoparticles were sensitive to the presence of volatile
organic compound (VOC) gas from the change in the
surface plasmon resonance (SPR)
intensity. The mechanism for the detection of VOC’s
gas will be discussed.
Keywords: Gold nanoparticles; LSPR; VOC gas
ABSTRAK
Kertas ini melaporkan tentang pengesanan beberapa wap organik menggunakan sifat khas daripada resonans plasma permukaan tempatan (LSPR) nanozarah emas. Nanozarah emas yang difabrikasi pada permukaan substrat kuarza telah disediakan melalui kaedah penumbuhan dengan pengantara benih. Pada proses tipikal, nanozarah emas dengan saiz purata 36 nm telah dihasilkan dan tumbuh dengan padat pada permukaan substrat. Pengesanan gas sebatian organik mudah meruap adalah berdasarkan kepada perubahan LSPR pada filem nanozarah emas apabila didedahkan terhadap sampel gas. Didapati bahawa filem nanozarah emas menunjukkan kepekaan terhadap kehadiran gas sebatian organik mudah meruap melalui perubahan puncak serapan resonans plasmon permukaan (SPR). Mekanisme pengesanan gas sebatian organik mudah meruap akan diperbincangkan.
Kata kunci: Gas mudah meruap; LSPR; nanozarah emas
REFERENCES
Daniel,
M.C. & Astruc, D. 2004. Gold nanoparticles: assembly, supramolecular chemistry, quantum-size-related properties and application toward biology,
catalysis and nanotechnology. Chemical Reviews 104: 293-346.
El-Sayed, M.A. 2001. Some interesting properties of metals
confined in time and nanometer space of different shape. Account of Chemical
Research 34: 257-264.
Murray,
W.A. & Barnes, W.L. 2007. Plasmonic material. Advanced Materials 19:
3771-3782.
Umar, A.A. & Oyama, M. 2005. Growth of high-density gold nanoparticles on an indium tin oxide surface prepared using a “touch” seed-mediated growth technique. Crystal
Growth and Design 5(2): 599-607.
Umar, A.A. & Oyama, M. 2006a. A cast seed-mediated growth
method for preparating gold nanoparticles-attached
indium tin oxide surfaces. Applied Surface Science 253:
2196-2206.
Umar, A.A. & Oyama, M. 2006b. Attachment of gold nanoparticles onto indium tin oxide surfaces controlled by
adding citrate ions in a seed-mediated growth method. Applied
Surface Science 253(5): 2933-2940.
Umar, A.A. & Oyama, M. 2007. A seed-mediated growth method for
vertical array of single-crystalline CuO nanowires on surfaces. Crystal Growth and Design 7(12): 2404-2409.
Umar, A.A., Oyama, M., Salleh, M.M. & Majlis, B.Y. 2009.
Formation of high-yield gold nanoplates on the
surface: effective two-dimensional crystal growth of nanoseed in the presence of poly(vinylpyrrolidone)
and cetyltrimethylammonium bromide. Crystal Growth
and Design 9(6): 2835-2840.
Zhao, J., Zhang,
X., Yonzon, C.R., Haes,
A.J. & Duyne, R.P.V. 2006. Localized surface plasmon resonance biosensors. Nanomedicine 1(2): 219-228.
Zhou,
J., Ralston, J., Sedev, R. & Beattie, D.A. 2009. Functionalized
gold nanoparticles: synthesis, structure and colloid
stability. Journal of Colloid and Interface Science 331: 251-262.
*Corresponding author; email: akrajas@ukm.my
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