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

^*Corresponding author for this work

Xi'an University of Architecture and Technology

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

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.

Original language	English
Pages (from-to)	496-502
Number of pages	7
Journal	Green Processing and Synthesis
Volume	9
Issue number	1
DOIs	https://doi.org/10.1515/gps-2020-0033
Publication status	Published - 1 Jan 2020
Externally published	Yes

Keywords

Tafel polarization curve
anodic dissolution
electrochemical behavior
thiosulfate

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1515/gps-2020-0033

Cite this

@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

Abstract

Keywords

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this