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Ultrafast synthesis of Au(I)-dodecanethiolate nanotubes for advanced Hg(2+) sensor electrodes.

Zhang Z, Ma C, He L, Zhu S, Hao X, Xie W, Zhang W, Zhang Y - Nanoscale Res Lett (2014)

Bottom Line: In this work, an ultrafast and facile method is developed to synthesize Au(I)-dodecanethiolate nanotubes (Au(I)NTs) with the assistance of glycyl-glycyl-glycine (G-G-G).According to structural analysis, a possible preparative mechanism is proposed that the G-G-G peptide could help to curl into tube-like morphology in alkaline situation spontaneously to accelerate the formation of Au(I)NTs.Meanwhile, PVDF-stabilized Au(I)NT-modified glassy carbon electrodes present their promising potential for Hg(2+) detection.

View Article: PubMed Central - HTML - PubMed

Affiliation: College of Material Science and Engineering, Chongqing University, Chongqing 400044, People's Republic of China.

ABSTRACT
In this work, an ultrafast and facile method is developed to synthesize Au(I)-dodecanethiolate nanotubes (Au(I)NTs) with the assistance of glycyl-glycyl-glycine (G-G-G). Transmission electron microscopy (TEM) images reveal that the as-prepared Au(I)NTs can be obtained in a 2-h reaction instead of a previous 24-h reaction and are uniform with a hollow structure and smooth surface by virtue of the G-G-G peptide tubular template. According to structural analysis, a possible preparative mechanism is proposed that the G-G-G peptide could help to curl into tube-like morphology in alkaline situation spontaneously to accelerate the formation of Au(I)NTs. Meanwhile, PVDF-stabilized Au(I)NT-modified glassy carbon electrodes present their promising potential for Hg(2+) detection.

No MeSH data available.


Related in: MedlinePlus

Square wave anodic stripping voltammetry. SWASV response for 0 and 5 μM Hg2+ in 0.1 M HCl. SWASV conditions: quiet time, 10 s; frequency, 30 Hz; potential increment, 4 mV; amplitude of the square wave, 25 mV.
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Figure 4: Square wave anodic stripping voltammetry. SWASV response for 0 and 5 μM Hg2+ in 0.1 M HCl. SWASV conditions: quiet time, 10 s; frequency, 30 Hz; potential increment, 4 mV; amplitude of the square wave, 25 mV.

Mentions: In order to elucidate the practical application of Hg2+ sensor, SWASV response is examined, as shown in Figure 4, indicating that the adsorbed Hg2+ was reduced to Hg0 at a certain potential. The SWASV analytical characteristics of bare GCE and PVDF-Au(I)NT-modified GCE present different responses in 5 μM Hg2+ in 0.1 M HCl solution. The sharper and higher peak current for Hg2+ is obtained at the PVDF-Au(I)NT-modified GCE, compared with the bare GCE, and this phenomena is consistent with the previous work [20].


Ultrafast synthesis of Au(I)-dodecanethiolate nanotubes for advanced Hg(2+) sensor electrodes.

Zhang Z, Ma C, He L, Zhu S, Hao X, Xie W, Zhang W, Zhang Y - Nanoscale Res Lett (2014)

Square wave anodic stripping voltammetry. SWASV response for 0 and 5 μM Hg2+ in 0.1 M HCl. SWASV conditions: quiet time, 10 s; frequency, 30 Hz; potential increment, 4 mV; amplitude of the square wave, 25 mV.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4226189&req=5

Figure 4: Square wave anodic stripping voltammetry. SWASV response for 0 and 5 μM Hg2+ in 0.1 M HCl. SWASV conditions: quiet time, 10 s; frequency, 30 Hz; potential increment, 4 mV; amplitude of the square wave, 25 mV.
Mentions: In order to elucidate the practical application of Hg2+ sensor, SWASV response is examined, as shown in Figure 4, indicating that the adsorbed Hg2+ was reduced to Hg0 at a certain potential. The SWASV analytical characteristics of bare GCE and PVDF-Au(I)NT-modified GCE present different responses in 5 μM Hg2+ in 0.1 M HCl solution. The sharper and higher peak current for Hg2+ is obtained at the PVDF-Au(I)NT-modified GCE, compared with the bare GCE, and this phenomena is consistent with the previous work [20].

Bottom Line: In this work, an ultrafast and facile method is developed to synthesize Au(I)-dodecanethiolate nanotubes (Au(I)NTs) with the assistance of glycyl-glycyl-glycine (G-G-G).According to structural analysis, a possible preparative mechanism is proposed that the G-G-G peptide could help to curl into tube-like morphology in alkaline situation spontaneously to accelerate the formation of Au(I)NTs.Meanwhile, PVDF-stabilized Au(I)NT-modified glassy carbon electrodes present their promising potential for Hg(2+) detection.

View Article: PubMed Central - HTML - PubMed

Affiliation: College of Material Science and Engineering, Chongqing University, Chongqing 400044, People's Republic of China.

ABSTRACT
In this work, an ultrafast and facile method is developed to synthesize Au(I)-dodecanethiolate nanotubes (Au(I)NTs) with the assistance of glycyl-glycyl-glycine (G-G-G). Transmission electron microscopy (TEM) images reveal that the as-prepared Au(I)NTs can be obtained in a 2-h reaction instead of a previous 24-h reaction and are uniform with a hollow structure and smooth surface by virtue of the G-G-G peptide tubular template. According to structural analysis, a possible preparative mechanism is proposed that the G-G-G peptide could help to curl into tube-like morphology in alkaline situation spontaneously to accelerate the formation of Au(I)NTs. Meanwhile, PVDF-stabilized Au(I)NT-modified glassy carbon electrodes present their promising potential for Hg(2+) detection.

No MeSH data available.


Related in: MedlinePlus