Efficient seed-mediated method for the large-scale synthesis of Au nanorods

被引:18
作者
Ahmed, Waqqar [1 ,2 ]
Bhatti, Arshad Saleem [1 ]
van Ruitenbeek, Jan M. [2 ]
机构
[1] COMSATS Inst Informat Technol, Dept Phys, Pk Rd, Islamabad 44000, Pakistan
[2] Leiden Univ, Huygens Kamerlingh Onnes Lab, Niels Bohrweg 2, Leiden, Netherlands
关键词
Gold nanoparticles; Seeded protocol; Large-scale synthesis; Plasmonics; MONODISPERSE GOLD NANORODS; ENHANCED RAMAN-SCATTERING; MICROFLUIDIC SYNTHESIS; GROWTH; NANOPARTICLES; SURFACTANT; MECHANISM; FUNCTIONALIZATION; SHAPE; SIZE;
D O I
10.1007/s11051-017-3815-9
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Seed-mediated methods are widely followed for the synthesis of Au nanorods (NRs). However, mostly dilute concentrations of the Au precursor (HAuCl4) are used in the growth solution, which leads to a low final concentration of NRs. Attempts of increasing the concentration of NRs by simply increasing the concentration of HAuCl4, other reagents in the growth solution and seeds lead to a faster growth kinetics which is not favourable for NR growth. Herein, we demonstrate that the increase in growth kinetics for high concentrations of reagents in growth solution can be neutralised by decreasing the pH of the solution. The synthesis of the NRs can be scaled up by using higher concentrations of reagents and adding an optimum concentration of HCl in the growth solution. The concentration of HAuCl4 in the growth solution can be increased up to 5 mM, and 10-20 times more NRs can be synthesised for the same reaction volume compared to that of the conventional seed-mediated method. We have also noticed that a cetyltrimethylammonium bromide (CTAB)-to-HAuCl4 molar ratio of 50 is sufficient for obtaining high yield of NRs.
引用
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页数:9
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共 35 条
[1]   Gold nanorods: Synthesis and optical properties [J].
Alekseeva, A. V. ;
Bogatyrev, V. A. ;
Khlebtsov, B. N. ;
Mel'nikov, A. G. ;
Dykman, L. A. ;
Khlebtsov, N. G. .
COLLOID JOURNAL, 2006, 68 (06) :661-678
[2]   Gold nanorods 3D-supercrystals as surface enhanced Raman scattering spectroscopy substrates for the rapid detection of scrambled prions [J].
Alvarez-Puebla, Ramon A. ;
Agarwal, Ashish ;
Manna, Pramit ;
Khanal, Bishnu P. ;
Aldeanueva-Potel, Paula ;
Carbo-Argibay, Enrique ;
Pazos-Perez, Nicolas ;
Vigderman, Leonid ;
Zubarev, Eugene R. ;
Kotov, Nicholas A. ;
Liz-Marzan, Luis M. .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2011, 108 (20) :8157-8161
[3]   An improved synthesis of high-aspect-ratio gold nanorods [J].
Busbee, BD ;
Obare, SO ;
Murphy, CJ .
ADVANCED MATERIALS, 2003, 15 (05) :414-+
[4]   Gold nanorods coated with multilayer polyelectrolyte as contrast agents for multimodal imaging [J].
Ding, Hong ;
Yong, Ken-Tye ;
Roy, Indrajit ;
Pudavar, Haridas E. ;
Law, Wing Cheung ;
Bergey, Earl J. ;
Prasad, Paras N. .
JOURNAL OF PHYSICAL CHEMISTRY C, 2007, 111 (34) :12552-12557
[5]   The golden age: gold nanoparticles for biomedicine [J].
Dreaden, Erik C. ;
Alkilany, Alaaldin M. ;
Huang, Xiaohua ;
Murphy, Catherine J. ;
El-Sayed, Mostafa A. .
CHEMICAL SOCIETY REVIEWS, 2012, 41 (07) :2740-2779
[6]   Droplet-Based Microfluidic Synthesis of Anisotropic Metal Nanocrystals [J].
Duraiswamy, Suhanya ;
Khan, Saif A. .
SMALL, 2009, 5 (24) :2828-2834
[7]   Formation of Gold Nanorods by a Stochastic "Popcorn" Mechanism [J].
Edgar, Jonathan A. ;
McDonagh, Andrew M. ;
Cortie, Michael B. .
ACS NANO, 2012, 6 (02) :1116-1125
[8]   The Role of Bromide Ions in Seeding Growth of Au Nanorods [J].
Garg, Niti ;
Scholl, Clark ;
Mohanty, Ashok ;
Jin, Rongchao .
LANGMUIR, 2010, 26 (12) :10271-10276
[9]   Seed-mediated synthesis of gold nanorods: Role of the size and nature of the seed [J].
Gole, A ;
Murphy, CJ .
CHEMISTRY OF MATERIALS, 2004, 16 (19) :3633-3640
[10]   Shape control in gold nanoparticle synthesis [J].
Grzelczak, Marek ;
Perez-Juste, Jorge ;
Mulvaney, Paul ;
Liz-Marzan, Luis M. .
CHEMICAL SOCIETY REVIEWS, 2008, 37 (09) :1783-1791