Effect of A Constant Electric Field on the Structure of the Oxide Layer Formed during Zinc Oxidation by Supercritical H2O and H2O/CO2 Fluids

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Effect of A Constant Electric Field on the Structure of the Oxide Layer Formed during Zinc Oxidation by Supercritical H2O and H2O/CO2 Fluids. / Shishkin, Andrey V.; Sokol, Mikhail Ya; Dubov, Dmitriy Yu et al.

In: Journal of Advanced Oxidation Technologies, Vol. 21, No. 1, 01.01.2018.

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

BibTeX

@article{d73925766c754dba96b7ae74970902da,

title = "Effect of A Constant Electric Field on the Structure of the Oxide Layer Formed during Zinc Oxidation by Supercritical H2O and H2O/CO2 Fluids",

abstract = "It has been found that the interaction of a zinc anode with water under supercritical (temperature 673 K and pressure ≈23 MPa) and near-critical (673 K and ≈18 MPa) conditions at electric field strength of ≈300 kV/m produces an inhomogeneous ZnO layer containing regions with a capillary structure. The capillaries are oriented along the direction of the constant electric field and have an average diameter of ≈1 μm at 23 MPa and 50-100 nm at 18 MPa. During oxidation of zinc by supercritical H2O/CO2 fluid at 673 K and ≈35 MPa (molar fraction of CO2: 0.27-0.94) under the electric field conditions, a ZnO layer without capillary structure is formed. It has been found that the electric field promotes the growth of ZnO nanorods in the surface layer and the formation of zinc oxalate and carbonate, whose thermal decomposition produces the porous ZnO structure.",

keywords = "Electric Field, Nanocrystals, Oxidation, Supercritical Fluid H2O/CO2, Supercritical Water, Zinc, Zinc Oxide",

author = "Shishkin, {Andrey V.} and Sokol, {Mikhail Ya} and Dubov, {Dmitriy Yu} and Fedyaeva, {Oxana N.}",

year = "2018",

month = jan,

day = "1",

doi = "10.26802/jaots.2017.0049",

language = "English",

volume = "21",

journal = "Journal of Advanced Oxidation Technologies",

issn = "1203-8407",

publisher = "Walter de Gruyter GmbH",

number = "1",

}

RIS

TY - JOUR

T1 - Effect of A Constant Electric Field on the Structure of the Oxide Layer Formed during Zinc Oxidation by Supercritical H2O and H2O/CO2 Fluids

AU - Shishkin, Andrey V.

AU - Sokol, Mikhail Ya

AU - Dubov, Dmitriy Yu

AU - Fedyaeva, Oxana N.

PY - 2018/1/1

Y1 - 2018/1/1

N2 - It has been found that the interaction of a zinc anode with water under supercritical (temperature 673 K and pressure ≈23 MPa) and near-critical (673 K and ≈18 MPa) conditions at electric field strength of ≈300 kV/m produces an inhomogeneous ZnO layer containing regions with a capillary structure. The capillaries are oriented along the direction of the constant electric field and have an average diameter of ≈1 μm at 23 MPa and 50-100 nm at 18 MPa. During oxidation of zinc by supercritical H2O/CO2 fluid at 673 K and ≈35 MPa (molar fraction of CO2: 0.27-0.94) under the electric field conditions, a ZnO layer without capillary structure is formed. It has been found that the electric field promotes the growth of ZnO nanorods in the surface layer and the formation of zinc oxalate and carbonate, whose thermal decomposition produces the porous ZnO structure.

AB - It has been found that the interaction of a zinc anode with water under supercritical (temperature 673 K and pressure ≈23 MPa) and near-critical (673 K and ≈18 MPa) conditions at electric field strength of ≈300 kV/m produces an inhomogeneous ZnO layer containing regions with a capillary structure. The capillaries are oriented along the direction of the constant electric field and have an average diameter of ≈1 μm at 23 MPa and 50-100 nm at 18 MPa. During oxidation of zinc by supercritical H2O/CO2 fluid at 673 K and ≈35 MPa (molar fraction of CO2: 0.27-0.94) under the electric field conditions, a ZnO layer without capillary structure is formed. It has been found that the electric field promotes the growth of ZnO nanorods in the surface layer and the formation of zinc oxalate and carbonate, whose thermal decomposition produces the porous ZnO structure.

KW - Electric Field

KW - Nanocrystals

KW - Oxidation

KW - Supercritical Fluid H2O/CO2

KW - Supercritical Water

KW - Zinc

KW - Zinc Oxide

UR - http://www.scopus.com/inward/record.url?scp=85035097371&partnerID=8YFLogxK

U2 - 10.26802/jaots.2017.0049

DO - 10.26802/jaots.2017.0049

M3 - Article

AN - SCOPUS:85035097371

VL - 21

JO - Journal of Advanced Oxidation Technologies

JF - Journal of Advanced Oxidation Technologies

SN - 1203-8407

IS - 1

ER -

ID: 12081536