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. 2023 Jan 4;8(2):2237-2242.
doi: 10.1021/acsomega.2c06481. eCollection 2023 Jan 17.

Synthesis of Silver Nanowires Using a Polyvinylpyrrolidone-Free Method with an Alpinia zerumbet Leaf Based on the Oriented Attachment Mechanism

Yanling Li  1 , Ying Wang  1 , Junqing Wu  1 , Yingying Pan  1 , Huangqing Ye  2 , Xiping Zeng  1
Affiliations

Synthesis of Silver Nanowires Using a Polyvinylpyrrolidone-Free Method with an Alpinia zerumbet Leaf Based on the Oriented Attachment Mechanism

Yanling Li et al. ACS Omega. .

Abstract

In this study, silver nanowires (AgNWs) were successfully synthesized by using a polyvinylpyrrolidone (PVP)-free hydrothermal method with an Alpinia zerumbet leaf chunk as a reducing agent and template. Meanwhile, the mechanism of biomass synthesis of AgNWs is also explored. The AgNWs have a diameter of ∼77 nm and a length of ∼10 μm. During the hydrothermal process, the biomass initially serves as a reducing agent to reduce silver ions. As the reaction proceeds, the biomass will form a pipe-shaped soft template by hydrothermal carbonization. Silver ions are adsorbed and reduced along the pipe-shaped soft templates to form silver nanorods, and adjacent nanorods are merged to AgNWs. Thus, AgNWs are grown along the pipeline soft template based on the oriented attachment mechanism. Inspired by this, the mechanism of the polyol method was further investigated. In the initial growth stage, AgNWs synthesized by the polyol method have a V-shaped notch. Therefore, AgNWs synthesized by the polyol method may also grow on the basis of the oriented attachment mechanism with PVP as a template.

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Conflict of interest statement

The authors declare no competing financial interest.

Figures

Figure 1
Figure 1
(a) XRD images of AgNWs synthesized with the biomass. (b, c) SEM images of AgNWs synthesized with the biomass; insets are the size distribution statistics of 100 silver nanowires. (d) TEM images of AgNWs synthesized with the biomass; the inset is the SAED image. (e) HRTEM pattern of AgNWs synthesized with the biomass; the inset is the partial enlargement image. (f) Element mapping.
Figure 2
Figure 2
SEM images of AgNWs synthesized with a biomass quality of (a) 0.50 g, (b) 0.75 g, (c) 1.00 g, and (d) 1.25 g.
Figure 3
Figure 3
SEM images of the synthesis of (a) tea polyphenols, (b) lactose, and (c, d) tea polyphenols, lactose, and KCl.
Figure 4
Figure 4
SEM images of AgNWs synthesized for (a) 25 min, (b) 50 min, (c) 75 min, (d) 100 min, (e) 150 min, and (f) 300 min. Inset (c–f) is the TEM images.
Figure 5
Figure 5
(a) Curves between the length of AgNWs and the different molecular weights of PVP. (b) SEM image of AgNWs synthesized with polyol. (c, d) TEM image of AgNWs synthesized with polyol.
Figure 6
Figure 6
SEM images of AgNWs synthesized with (a) biomass and (b) ethylene glycol. SEM image of AgNWs treated with (c) the biomass and (d) ethylene glycol at 200 °C for 4 h.
See this image and copyright information in PMC

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