An electrochemical method to investigate the effects of compound composition on gold dissolution in thiosulfate solution

Zhaohui Zhang; Bailong Liu; Mei Wu; Longxin Sun

doi:10.1515/gps-2020-0033

An electrochemical method to investigate the effects of compound composition on gold dissolution in thiosulfate solution

Zhaohui Zhang, Bailong Liu^*, Mei Wu, Longxin Sun

^*此作品的通讯作者

Xi'an University of Architecture and Technology

科研成果: 期刊稿件 › 文章 › 同行评审

3 引用（Scopus）

摘要

The electrochemical behavior of gold dissolution in the Cu2+-NH3-S2O32-EDTA solution has been investigated in detail by deriving and analyzing the Tafel polarization curve, as this method is currently widely implemented for the electrode corrosion analysis. The dissolution rate of gold in Cu2+-NH3-S2O32-EDTA solution was determined based on the Tafel polarization curves, and the effects of various compound compositions in a Cu2+-NH3-S2O32-EDTA mixture on the corrosion potential and corrosion current density were analyzed. The results showed that the corrosion potential and polarization resistance decreased, whereas the corrosion current density increased for certain concentrations of S2O32-NH3-Cu2+ and EDTA, indicating that the dissolution rate of gold had changed. The reason for promoting the dissolution of gold is also discussed.

源语言	英语
页（从-至）	496-502
页数	7
期刊	Green Processing and Synthesis
卷	9
期	1
DOI	https://doi.org/10.1515/gps-2020-0033
出版状态	已出版 - 1 1月 2020
已对外发布	是

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@article{a6bae49fc49d440e9440cb793198a1b8,

title = "An electrochemical method to investigate the effects of compound composition on gold dissolution in thiosulfate solution",

abstract = "The electrochemical behavior of gold dissolution in the Cu2+-NH3-S2O32-EDTA solution has been investigated in detail by deriving and analyzing the Tafel polarization curve, as this method is currently widely implemented for the electrode corrosion analysis. The dissolution rate of gold in Cu2+-NH3-S2O32-EDTA solution was determined based on the Tafel polarization curves, and the effects of various compound compositions in a Cu2+-NH3-S2O32-EDTA mixture on the corrosion potential and corrosion current density were analyzed. The results showed that the corrosion potential and polarization resistance decreased, whereas the corrosion current density increased for certain concentrations of S2O32-NH3-Cu2+ and EDTA, indicating that the dissolution rate of gold had changed. The reason for promoting the dissolution of gold is also discussed.",

keywords = "Tafel polarization curve, anodic dissolution, electrochemical behavior, thiosulfate",

author = "Zhaohui Zhang and Bailong Liu and Mei Wu and Longxin Sun",

note = "Publisher Copyright: {\textcopyright} 2020 Zhaohui Zhang et al., published by De Gruyter 2020.",

year = "2020",

month = jan,

day = "1",

doi = "10.1515/gps-2020-0033",

language = "English",

volume = "9",

pages = "496--502",

journal = "Green Processing and Synthesis",

issn = "2191-9542",

publisher = "Walter de Gruyter GmbH",

number = "1",

}

TY - JOUR

T1 - An electrochemical method to investigate the effects of compound composition on gold dissolution in thiosulfate solution

AU - Zhang, Zhaohui

AU - Liu, Bailong

AU - Wu, Mei

AU - Sun, Longxin

PY - 2020/1/1

Y1 - 2020/1/1

N2 - The electrochemical behavior of gold dissolution in the Cu2+-NH3-S2O32-EDTA solution has been investigated in detail by deriving and analyzing the Tafel polarization curve, as this method is currently widely implemented for the electrode corrosion analysis. The dissolution rate of gold in Cu2+-NH3-S2O32-EDTA solution was determined based on the Tafel polarization curves, and the effects of various compound compositions in a Cu2+-NH3-S2O32-EDTA mixture on the corrosion potential and corrosion current density were analyzed. The results showed that the corrosion potential and polarization resistance decreased, whereas the corrosion current density increased for certain concentrations of S2O32-NH3-Cu2+ and EDTA, indicating that the dissolution rate of gold had changed. The reason for promoting the dissolution of gold is also discussed.

AB - The electrochemical behavior of gold dissolution in the Cu2+-NH3-S2O32-EDTA solution has been investigated in detail by deriving and analyzing the Tafel polarization curve, as this method is currently widely implemented for the electrode corrosion analysis. The dissolution rate of gold in Cu2+-NH3-S2O32-EDTA solution was determined based on the Tafel polarization curves, and the effects of various compound compositions in a Cu2+-NH3-S2O32-EDTA mixture on the corrosion potential and corrosion current density were analyzed. The results showed that the corrosion potential and polarization resistance decreased, whereas the corrosion current density increased for certain concentrations of S2O32-NH3-Cu2+ and EDTA, indicating that the dissolution rate of gold had changed. The reason for promoting the dissolution of gold is also discussed.

KW - Tafel polarization curve

KW - anodic dissolution

KW - electrochemical behavior

KW - thiosulfate

UR - http://www.scopus.com/inward/record.url?scp=85093511755&partnerID=8YFLogxK

U2 - 10.1515/gps-2020-0033

DO - 10.1515/gps-2020-0033

M3 - Article

AN - SCOPUS:85093511755

SN - 2191-9542

VL - 9

SP - 496

EP - 502

JO - Green Processing and Synthesis

JF - Green Processing and Synthesis

IS - 1

ER -

An electrochemical method to investigate the effects of compound composition on gold dissolution in thiosulfate solution

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