Synthesis and shapes of gold nanoparticles by using transition metal monosubstituted heteropolyanions as photocatalysts and stabilizers

doi:10.1007/s11458-009-0005-z

Front Chem Chin

2009, Vol. 4

Issue (1) : 44-47 https://doi.org/10.1007/s11458-009-0005-z

RESEARCH ARTICLE

Synthesis and shapes of gold nanoparticles by using transition metal monosubstituted heteropolyanions as photocatalysts and stabilizers

Caihong NIU, Ying WU(

), Zhenping WANG, Zheng LI, Rong LI

College of Chemistry and Chemical Engineering, Soochow University, Suzhou 215123, China

Download: PDF(157 KB) HTML
Export: BibTeX | EndNote | Reference Manager | ProCite | RefWorks

Abstract

Gold nanoparticles were prepared via a simple photoreduction technique in the presence of transition metal monosubstituted Keggin heteropolyanions (PW11M, M= Cu²⁺, Ni²⁺, Zn²⁺, Fe³⁺), in which PW11M acted as reducing agent, photocatalyst and stabilizer. The results indicated that the formation rate and morphology of the nanoparticles strongly depended on the kind of transition metal substituted in heteropolyacid and the preparation conditions, such as irradiation time and propan-2-ol amount. The photoreduction rates of PW11Zn and PW11Fe were faster than those of PW11Ni and PW11Cu. The shapes of the nanoparticles synthesized in the presence of PW11Fe and PW11Zn were nearly uniform spheres, whereas the morphologies of the nanoparticles synthesized in the presence of PW11Ni and PW11Cu were found to contain a mixture of flat triangular/hexagonal structures as well as spheres. Increases in the irradiation time and the propan-2-ol amount could make the morphology of nanoparticles uniform and shorten the formation time of the nanoparticles.

Keywords heteropolyanion photoreduction gold nanoparticle

Corresponding Author(s): WU Ying,Email:yingwu@suda.edu.cn

Issue Date: 05 March 2009

Cite this article:

Caihong NIU,Ying WU,Zhenping WANG, et al. Synthesis and shapes of gold nanoparticles by using transition metal monosubstituted heteropolyanions as photocatalysts and stabilizers[J]. Front Chem Chin, 2009, 4(1): 44-47.

URL:

https://academic.hep.com.cn/fcc/EN/10.1007/s11458-009-0005-z
https://academic.hep.com.cn/fcc/EN/Y2009/V4/I1/44

Fig.1 UV-Vis spectra of the gold nanoparticle solutions synthesized in the presence of PWM
(M= Zn, Fe, Ni, Cu) with irradiation time 40 min () and irradiation time 90 min ()

Fig.2 TEM images of gold nanoparticles obtained in the presence of PWM
() Synthesized by PWFe, irradiation time 40 min; () synthesized by PWZn, irradiation time 40 min;
() Synthesized by PWNi, irradiation time 90 min; () synthesized by PWCu, irradiation time 90 min.

Fig.3 UV-Vis spectra of the gold nanoparticles solutions synthesized in the presence of PWFe Irradiation time/min: () 0; () 20; () 40; () 60; () 90

Fig.4 UV-Vis spectra of the gold nanoparticles obtained in the presence of PWNi using different amounts of propan-2-ol V(propan-2-ol)/mL: () 0.2; () 1.0; () 2.0; () 5.0

Fig.5 TEM image of gold nanoparticles synthesized in the presence of PWNi using 5.0 mL propan-2-ol

1	Papaconstantinou E. Photochemistry of Polyoxometallates of Molybdenum and Tungsten and/or Vanadium. Chem Soc Rev , 1989, 18: 1–31 doi: 10.1039/cs9891800001
2	Wang E B, Hu C W, Xu L. Introduction to polyacid chemistry. Beijing: Chemical Inductry Press, 1998, 87
3	Toshihiro Yamase. Photo- and Electrochromism of Polyoxometalates and Related Materials. Chem Rev , 1998, 98(1): 307–325 doi: 10.1021/cr9604043
4	Weinstock I A. Homogeneous-Phase Electron-Transfer Reactions of Polyoxometalates. Chem Rev , 1998, 98(1): 113–170 doi: 10.1021/cr9703414
5	Troupis A, Hiskia A, Papaconstantinou E. Synthesis of Metal Nanoparticles by Using Polyoxometalates as Photocatalysts and Stabilizers. Angew Chem Int Ed , 2002, 41(11): 1911–1914 doi: 10.1002/1521-3773(20020603)41:11<1911::AID-ANIE1911>3.0.CO;2-0
6	Mandal S, Das A, Srivastava R, and Sastry M. Keggin Ion Mediated Synthesis of Hydrophobized Pd Nanoparticles for Multifunctional Catalysis. Langmuir , 2005, 21(6): 2408–2413 doi: 10.1021/la047717a
7	Mandal S, Selvakannan P R, Pasricha R, Sastry M. Keggin Ions as UV-Switchable Reducing Agents in the Synthesis of Au Core-Ag Shell Nanoparticles. J Am Chem Soc , 2003, 125(28): 8440–8441 doi: 10.1021/ja034972t
8	Troupis A, Hiskia A, Papaconstantinou E. Photocatalytic Reduction and Recovery of Copper by Polyoxometalates. Environ Sci Technol , 2002, 36(24): 5355–5362 doi: 10.1021/es020933q
9	Troupis A, Hiskia A, Papaconstantinou E. Selective photocatalytic reduction–recovery of palladium using polyoxometallates. Applied Catalysis B: Environmental , 2004, 52: 41–48 doi: 10.1016/j.apcatb.2004.02.016
10	He H M, Sun T, Jiang D Z. Study on Preparation and Characterization of Hydrotalcites Pillared with Tri-atomic Heteropoly Anions of P-W System.Chinese Journal of Inorganic Chemistry , 1994, 10(3): 272–277 (in Chinese)
11	Shankar S S, Rai A, Ahmad A, Sastry M. Controlling the Optical Properties of Lemongrass Extract Synthesized Gold Nanotriangles and Potential Application in Infrared-Absorbing Optical Coatings. Chem Mater , 2005, 17(3): 566–572 doi: 10.1021/cm048292g
12	Rai A, Singh A, Ahmad A, Sastry M. Role of Halide Ions and Temperature on the Morphology of Biologically Synthesized Gold Nanotriangles. Langmuir , 2006, 22(2): 736–741 doi: 10.1021/la052055q
13	Sarma T K and Chattopadhyay A. Starch-Mediated Shape-Selective Synthesis of Au Nanoparticles with Tunable Longitudinal Plasmon Resonance. Langmuir , 2004, 20(9): 3520–3524 doi: 10.1021/la049970g

Viewed

Full text

Abstract

Cited

Shared

Discussed