Unique Voltammetry of Silver Nanoparticles: From Single Particle to Aggregates

被引：18

作者：

Chen, Wei ^{[1
]}

Wang, Hao ^{[1
]}

Tang, Haoran ^{[1
]}

Yang, Cheng ^{[1
]}

Li, Yongxin ^{[1
]}

机构：

[1] Anhui Normal Univ, Coll Chem & Mat Sci, Anhui Key Lab Chemo Biosensing, Wuhu 241000, Peoples R China

来源：

ANALYTICAL CHEMISTRY | 2019年 / 91卷 / 22期

关键词：

ANODIC-STRIPPING VOLTAMMETRY; SIZE; STABILITY; CITRATE;

D O I：

10.1021/acs.analchem.9b03372

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Understanding the electrooxidation process of metal nanoparticles (NPs) is very important because they have showed wide applications in electrocatalysis, sensing, and nanoelectronics. In this letter, we designed a strategy to investigate the anodic stripping voltammetry (ASV) of silver oxidation at single NP level and aggregation state by using gold single nanoelectrodes (SNEs) and ultramicroelectrodes. Results showed that the ASV peak potential and shape were significantly affected by the diameter and aggregation degree of the Ag NPs: symmetrical-peak shape, two-peak shape, and asymmetrical-peak shape appeared when Ag NPs changed from the single particle state to the large-aggregation state, and size-dependent ASVs for Ag NPs oxidation were also observed. These findings can help us deeply understand the metal NPs oxidation process and will benefit the related applications.

引用

页码：14188 / 14191

页数：4

共 20 条

[1] Size-controlled silver nanoparticles synthesized over the range 5-100 nm using the same protocol and their antibacterial efficacy [J].

Agnihotri, Shekhar ;

Mukherji, Soumyo ;

Mukherji, Suparna .

RSC ADVANCES, 2014, 4 (08) :3974-3983

[2] Aggregation-Dependent Oxidation of Metal Nanoparticles [J].

Allen, Stacy L. ;

Sharma, Jay N. ;

Zamborini, Francis P. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2017, 139 (37) :12895-12898

[3] Single-Nanoparticle Electrochemistry through Immobilization and Collision [J].

Anderson, Todd J. ;

Zhang, Bo .

ACCOUNTS OF CHEMICAL RESEARCH, 2016, 49 (11) :2625-2631

[4] Using Polyvinylpyrrolidone and Citrate Ions To Modify the Stability of Ag NPs in Ethylene Glycol [J].

Chen, Suyue ;

Lee, Hong Bok ;

Penn, R. Lee .

JOURNAL OF PHYSICAL CHEMISTRY C, 2019, 123 (19) :12444-12450

[5] Anodic Stripping Voltammetry of Silver Nanoparticles: Aggregation Leads to Incomplete Stripping [J].

Cloake, Samantha J. ;

Toh, Her Shuang ;

Lee, Patricia T. ;

Salter, Chris ;

Johnston, Colin ;

Compton, Richard G. .

CHEMISTRYOPEN, 2015, 4 (01) :22-26

[6] Impact of Environmental Conditions (pH, Ionic Strength, and Electrolyte Type) on the Surface Charge and Aggregation of Silver Nanoparticles Suspensions [J].

El Badawy, Amro M. ;

Luxton, Todd P. ;

Silva, Rendahandi G. ;

Scheckel, Kirk G. ;

Suidan, Makram T. ;

Tolaymat, Thabet M. .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2010, 44 (04) :1260-1266

[7] DETERMINATION OF SILVER(I) BY CYCLIC VOLTAMMETRY AT IODINE-COATED ELECTRODES [J].

HOURANI, MK .

ANALYST, 1994, 119 (09) :1975-1978

[8] Size-Dependent Voltammetry at Single Silver Nanoelectrodes [J].

Hua, Hongmei ;

Liu, Yong ;

Wang, Dongmei ;

Li, Yongxin .

ANALYTICAL CHEMISTRY, 2018, 90 (16) :9677-9681

[9] Chemiresistive Sensing with Chemically Modified Metal and Alloy Nanoparticles [J].

Ibanez, Francisco J. ;

Zamborini, Francis P. .

SMALL, 2012, 8 (02) :174-202

[10] Size-Dependent Electrochemical Oxidation of Silver Nanoparticles [J].

Ivanova, Olga S. ;

Zamborini, Francis P. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2010, 132 (01) :70-+

← 1 2 →