Rapid Synthesis and Structural Characterization of Well-Defined Gold Clusters by <i>Solution Plasma Sputtering</i>

Hu, Xiulan; Cho, Sung‐Pyo; Takai, Osamu; Saito, Nagahiro

doi:10.1021/cg2008528

Cited by 51 publications

(59 citation statements)

References 28 publications

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“…1), the XRD pattern revealed the formation of SnO plates containing Sn6O4(OH)4 particles. The TEM observation of this sample, reported by us elsewhere 21 , indicated the formation of single-crystalline tetragonal SnO plates, with the plate faces on the (001) plane. In addition, the systematic characterization revealed that the SnO plates and Sn6O4(OH)4 particles were precipitated from Sn(OH)3 -ions, as described by the following equations:…”

Section: Preparation Of Cell and Electrochemical Measurementssupporting

confidence: 62%

Surfactant-assisted synthesis of Sn nanoparticles via solution plasma technique

Saito

Chen

Akiyama

2014

Advanced Powder Technology

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We have adopted a solution plasma synthesis for preparing Sn nanoparticles (Sn-NPs) directly from metallic Sn electrode. The Sn-NPs were synthesized in the presence of the surfactant, cetyltrimethylammonium bromide (CTAB), and the effect of the concentration of CTAB on the Sn-NPs was investigated. Without CTAB addition, SnO plates were precipitated. Sn-NPs with less than 200 nm were synthesized at a high concentration of 200 × 10 -6 g·ml -1 of CTAB. Electrochemical properties of SnO plates and Sn-NPs were analyzed for use as an anode material in Li-ion batteries. A composite of Sn-NPs and graphite enhanced the cyclic stability owing to the buffer space provided by the graphite for volume expansion. In the case of the 30 wt% loaded Sn-NPs, the capacity was measured to be 414 mAh·g -1 after 20 cycles.

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Section: Preparation Of Cell and Electrochemical Measurementssupporting

confidence: 62%

Surfactant-assisted synthesis of Sn nanoparticles via solution plasma technique

Saito

Chen

Akiyama

2014

Advanced Powder Technology

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“…In fact, temperature effect has been shown in a H2/He plasma-aqueous H2PtCl6 solution [42] and by sputtering gold electrode with discharge plasma in liquid nitrogen and water (0 o C) [302,307]. The former case showed that the sizes of synthesized PtNPs were 2 and 5 nm at temperature of 10 and 40 o C, respectively.…”

Section: Size-and Shape-controlled Synthesismentioning

confidence: 99%

A review of plasma–liquid interactions for nanomaterial synthesis

Chen¹,

Li²,

Li³

2015

J. Phys. D: Appl. Phys.

312

225

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Over the past decades, a new branch of plasma research, the nanomaterial (NM) synthesis by plasma-liquid interactions (PLIs), is rapidly rising, mainly due to the recently developed various plasma sources operated from low to atmospheric pressures. The PLIs provide novel plasma-liquid interfaces where many physical and chemical processes take place. By exploiting these physical and chemical processes, various NMs ranging from noble metal nanoparticles to graphene nanosheets can be easily synthesized. The currently rapid development and increasingly wide utilization of the PLI method naturally lead to an urgent requirement for presenting a general review. This paper reviews the current status of research on plasma-liquid 2 interactions for nanomaterial syntheses. Focus is on the comprehensive understanding of the synthesis process and perceptive opinions on the present issues and future challenges in this subject.

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“…[12][13][14] In the SPP using a bipolar power supply the smallest diameter of the synthesized NPs was less than 2 nm. 9,15 These results suggest that the plasma input energy that changes the solution temperature and the final temperature during the process are the main factors which determine the NPs size.…”

Section: B Synthesis Of Npsmentioning

confidence: 89%

“…17 Electrons are considered to be responsible for the formation of the gold NPs in the gas phase of the SPP (reaction (1)). 7,8 and then the following works [9][10][11][12][13][14][15][16][17] reported that the reduction reaction occurs at the interface between the gas and liquid phase in the solution plasma, termed "the reaction field." In the reaction field, the radicals and electrons are highly reactive and responsible for the reduction reaction of the gold precursor (reaction (2)).…”

Section: B Synthesis Of Npsmentioning

confidence: 99%

“…[4][5][6] Recently, our research group has proposed a new SPPmethod that produces NPs with controlled size-distribution, high dispersibility, allows various compositions, and surroundings in an aqueous solution. [7][8][9][10][11][12][13][14][15][16][17] Compared to the chemical methods SPP displays much shorter processing times (from a few minutes up to a several tens of minutes) takes place at room temperature and atmospheric pressure and uses only low energy plasma. The novelty of our SPP method is that the plasma operates in glow discharge limits that in turn offer a suitable medium to control the chemical reactions inside the solutions.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of mono-dispersed nanofluids using solution plasma

Heo

Bratescu

Ueno

et al. 2014

Journal of Applied Physics

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Small-sized and well-dispersed gold nanoparticles (NPs) for nanofluidics have been synthesized by electrical discharge in liquid environment using termed solution plasma processing (SPP). Electrons and the hydrogen radicals are reducing the gold ions to the neutral form in plasma gas phase and liquid phase, respectively. The gold NPs have the smallest diameter of 4.9 nm when the solution temperature was kept at 20 C. Nucleation and growth theory describe the evolution of the NP diameter right after the reduction reaction in function of the system temperature, NP surface energy, dispersion energy barrier, and nucleation rate. Negative charges on the NPs surface during and after SPP generate repulsive forces among the NPs avoiding their agglomeration in solution. Increasing the average energy in the SPP determines a decrease of the zeta potential and an increase of the NPs diameter. An important enhancement of the thermal conductivity of 9.4% was measured for the synthesized nanofluids containing NPs with the smallest size. V C 2014 AIP Publishing LLC.

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Rapid Synthesis and Structural Characterization of Well-Defined Gold Clusters by Solution Plasma Sputtering

Cited by 51 publications

References 28 publications

Surfactant-assisted synthesis of Sn nanoparticles via solution plasma technique

Surfactant-assisted synthesis of Sn nanoparticles via solution plasma technique

A review of plasma–liquid interactions for nanomaterial synthesis

Synthesis of mono-dispersed nanofluids using solution plasma

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