One-step synthesis of uniform silver nanoparticles capped by saturated decanoate: direct spray printing ink to form metallic silver films

Abstract

The one-step synthesis and spectroscopic characterizations of size-controlled silver nanoparticles are described. The transmission electron microscopy (TEM), nuclear magnetic resonance (NMR), Fourier transform infrared spectroscopy (FT-IR), thermal gravimetric-mass analysis (TGA-MS) and X-ray photoelectron spectroscopy (XPS) techniques were used to characterize the decanoate-protected silver nanoparticles. TEM analysis showed that spherical nanoclusters of 7.52 +/- 0.57 nm were produced. Furthermore, the particle sizes are uniform with a narrow size distribution. For all samples, Ag 3d(5/2) and 3d(3/2) components appeared at 368.5 and 374.5 eV, respectively, in the XPS spectrum; these values compare very well with the typical values of carboxylate-protected Ag nanoparticles. A thermal analysis mass spectrometer was used to analyze the desorption behavior of decanoate-protected nanoparticles. From the desorption maximum temperatures of 181 and 263 degrees C, activation energies of 27.2 and 32.2 kcal mol(-1) for the desorption processes in the Ag MPCs were obtained, assuming a first-order reaction and using a pre-exponential factor of 1 x 10(13) s(-1). A specific resistivity of 6.097 microOmega cm for the silver metal film (0.7 microm) on a Si wafer can be produced simply by thermal annealing of an Ag monolayer-protected clusters film under an atmosphere of 90% N(2)-10% H(2) at 300 degrees C for 1 h.

Capuli cherry-mediated green synthesis of silver nanoparticles under white solar and blue LED light

“…6(a)) and the BL-AgNPs (T c at 122 and 210 • C, Fig. 6(b)), and we therefore suggest that the process is exothermic with a loss of H 2 O and CO 2 (Dong et al, 2009;Han, Yang, Shen, Zhou, & Wang, 2004). The weight losses found for WL-AgNPs and BL-AgNPs are 64.8% and 56.9%, respectively.…”

Synthesis and characterization of silver nanoparticles from (bis)alkylamine silver carboxylate precursors

“…Silver NPs (García-Barrasa et al 2011) along with gold NPs (Prasad et al 2008; Zhou et al 2015) and, in less extent, with cooper NPs (Bunge et al 2003) attract researchers’ attention not only due to its shape and size-dependent plasmonic properties but also as effective antibacterial agents (Furuzono et al 2013) and metallic inks (Dong et al 2009; Kim 2013; Vo et al 2010) applied for preparation of conductive paths used in printing of low-cost electronic circuits for flexible electronics (Wu et al 2006). The synthesis of silver nanoparticles (Ag NPs) is well described in the literature (García-Barrasa et al 2011) and concerns thermolysis (Kashiwagi et al 2006; Keum et al 2008; Yamamoto and Nakamoto 2003) and reduction with commonly reducing agents such as acrylic or ascorbic acid (Vo et al 2010), hydrazine (N 2 H 4 ) (Dong et al 2009) or sodium borohydride (NaBH 4 ) in biphasic medium (Sarkar et al 2005), hydrogenolysis (Uznanski and Bryszewska 2010), sonolysis (Veith et al 2012), etc. Thus, thermolysis of carboxylate metal complex with no use of solvent, stabilizer, or reducing agent should be conducted at high temperatures (~250 °C) since too low temperature leads to a stabilization shell composed of silver ions rather than the fully reduced silver atoms (Shim et al 2008; Szczęsny and Szłyk 2013).…”

Low-temperature Cu-to-Cu bonding using silver nanoparticles stabilised by saturated dodecanoic acid

“…For the preparation of silver NPs, a variety of stabilisers for silver nanoparticles, such as a thin layer of poly(vinyl pyrrolidone) [20][21][22][23], polyacrylate [24][25][26], oleylamine [27,28], alkylthiol [29][30][31], and saturated carbonic acid [27,32] coated on the surfaces, have been reported in the literature. In our previous report [33], a conductive silver metal film was produced by the thermal annealing of freshly prepared decanoate-protected Ag NPs (Ag-C 9 H 19 CO 2 ). However, the Ag-C 9 H 19 CO 2 NPs were operationally stable only within one day at room temperature due to the desorption of CO 2 gas and other decomposition fragments.…”