Single source precursor derived ZnO–PbO composite thin films for enhanced photocatalytic activity

Maria Batool; Rohama Gill; Khadija Munawar; Vickie McKee; Muhammad Mazhar

doi:10.1016/j.jssc.2021.122642

Single source precursor derived ZnO–PbO composite thin films for enhanced photocatalytic activity

Maria Batool, Rohama Gill^*, Khadija Munawar, Vickie McKee, Muhammad Mazhar

^*Kontaktforfatter

Institut for Fysik, Kemi og Farmaci

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review

Abstract

Bimetallic oxide composite has emerged as an effective stratagem to enhance the performance of metal oxide photoanodes. ZnO–PbO composite thin films were deposited onto fluorine doped tin oxide (FTO) coated glass substrates from a newly synthesized polymeric Zn–Pb based single source precursor {ZnPb(OAc)(TFA)₃(THF)₂}_n via aerosol-assisted chemical vapor deposition (AACVD) technique. The precursor was synthesized by the reaction of zinc acetate dihydrate (Zn(CH₃CO₂)₂⋅2H₂O), and lead acetate trihydrate (Pb(CH₃CO₂)₂⋅3H₂O) in the presence of triﬂouroacetic acid using THF as a solvent. The prepared complex {ZnPb(OAc)(TFA)₃(THF)₂}_n, was characterized by FTIR, NMR, and single crystal X-ray analysis. The polymeric precursor had melting point of 72 ^ᴼC and decomposed at 450 ^ᴼC with 36.6% residue as obtained via thermogravimetry (TG/DTG). X-ray diffraction and energy-dispersive X-ray spectroscopy studies of thin films predicted a prominent growth of ZnO–PbO crystallites onto FTO substrate. FESEM analysis illustrated a homogenous and smooth surface with evenly distributed microspheres. The direct band gap of ZnO–PbO composite, estimated by UV–Vis spectroscopy is 2.40 eV that proves the narrowing of band gap in composite form of ZnO with PbO. Photoelectrochemical properties of the as-synthesized ZnO–PbO composite thin ﬁlms investigated in the presence of 0.5 M aqueous NaOH solution shows photocurrent density of 705 μA cm⁻² at an applied potential of +0.8 V_SCE. The charge transfer dynamics of thin films were also examined using an electrochemical impedance spectroscopy (EIS) technique.

Originalsprog	Engelsk
Artikelnummer	122642
Tidsskrift	Journal of Solid State Chemistry
Vol/bind	305
ISSN	0022-4596
DOI	https://doi.org/10.1016/j.jssc.2021.122642
Status	Udgivet - jan. 2022

Bibliografisk note

Funding Information:
VMcK is grateful to the Carlsberg Foundation (grant CF15-0675 ) for the X-ray diffractometer. The research support of the Higher Education Commission (HEC), Pakistan under the distinguished national professor (DNP) program is acknowledged.

Publisher Copyright:
© 2021 Elsevier Inc.

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10.1016/j.jssc.2021.122642

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Tjek adgangen til materialet i Syddansk Universitetsbiblioteks søgemaskine

Citationsformater

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title = "Single source precursor derived ZnO–PbO composite thin films for enhanced photocatalytic activity",

abstract = "Bimetallic oxide composite has emerged as an effective stratagem to enhance the performance of metal oxide photoanodes. ZnO–PbO composite thin films were deposited onto fluorine doped tin oxide (FTO) coated glass substrates from a newly synthesized polymeric Zn–Pb based single source precursor {ZnPb(OAc)(TFA)3(THF)2}n via aerosol-assisted chemical vapor deposition (AACVD) technique. The precursor was synthesized by the reaction of zinc acetate dihydrate (Zn(CH3CO2)2⋅2H2O), and lead acetate trihydrate (Pb(CH3CO2)2⋅3H2O) in the presence of triﬂouroacetic acid using THF as a solvent. The prepared complex {ZnPb(OAc)(TFA)3(THF)2}n, was characterized by FTIR, NMR, and single crystal X-ray analysis. The polymeric precursor had melting point of 72 ᴼC and decomposed at 450 ᴼC with 36.6% residue as obtained via thermogravimetry (TG/DTG). X-ray diffraction and energy-dispersive X-ray spectroscopy studies of thin films predicted a prominent growth of ZnO–PbO crystallites onto FTO substrate. FESEM analysis illustrated a homogenous and smooth surface with evenly distributed microspheres. The direct band gap of ZnO–PbO composite, estimated by UV–Vis spectroscopy is 2.40 eV that proves the narrowing of band gap in composite form of ZnO with PbO. Photoelectrochemical properties of the as-synthesized ZnO–PbO composite thin ﬁlms investigated in the presence of 0.5 M aqueous NaOH solution shows photocurrent density of 705 μA cm−2 at an applied potential of +0.8 VSCE. The charge transfer dynamics of thin films were also examined using an electrochemical impedance spectroscopy (EIS) technique.",

keywords = "Heterobimetallic single source precursor, Photocatalytic activity, Semiconductors, Thin films, ZnO–PbO binary Composite",

author = "Maria Batool and Rohama Gill and Khadija Munawar and Vickie McKee and Muhammad Mazhar",

note = "Funding Information: VMcK is grateful to the Carlsberg Foundation (grant CF15-0675 ) for the X-ray diffractometer. The research support of the Higher Education Commission (HEC), Pakistan under the distinguished national professor (DNP) program is acknowledged. Publisher Copyright: {\textcopyright} 2021 Elsevier Inc.",

year = "2022",

month = jan,

doi = "10.1016/j.jssc.2021.122642",

language = "English",

volume = "305",

journal = "Journal of Solid State Chemistry",

issn = "0022-4596",

publisher = "Academic Press",

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TY - JOUR

T1 - Single source precursor derived ZnO–PbO composite thin films for enhanced photocatalytic activity

AU - Batool, Maria

AU - Gill, Rohama

AU - Munawar, Khadija

AU - McKee, Vickie

AU - Mazhar, Muhammad

N1 - Funding Information: VMcK is grateful to the Carlsberg Foundation (grant CF15-0675 ) for the X-ray diffractometer. The research support of the Higher Education Commission (HEC), Pakistan under the distinguished national professor (DNP) program is acknowledged. Publisher Copyright: © 2021 Elsevier Inc.

PY - 2022/1

Y1 - 2022/1

N2 - Bimetallic oxide composite has emerged as an effective stratagem to enhance the performance of metal oxide photoanodes. ZnO–PbO composite thin films were deposited onto fluorine doped tin oxide (FTO) coated glass substrates from a newly synthesized polymeric Zn–Pb based single source precursor {ZnPb(OAc)(TFA)3(THF)2}n via aerosol-assisted chemical vapor deposition (AACVD) technique. The precursor was synthesized by the reaction of zinc acetate dihydrate (Zn(CH3CO2)2⋅2H2O), and lead acetate trihydrate (Pb(CH3CO2)2⋅3H2O) in the presence of triﬂouroacetic acid using THF as a solvent. The prepared complex {ZnPb(OAc)(TFA)3(THF)2}n, was characterized by FTIR, NMR, and single crystal X-ray analysis. The polymeric precursor had melting point of 72 ᴼC and decomposed at 450 ᴼC with 36.6% residue as obtained via thermogravimetry (TG/DTG). X-ray diffraction and energy-dispersive X-ray spectroscopy studies of thin films predicted a prominent growth of ZnO–PbO crystallites onto FTO substrate. FESEM analysis illustrated a homogenous and smooth surface with evenly distributed microspheres. The direct band gap of ZnO–PbO composite, estimated by UV–Vis spectroscopy is 2.40 eV that proves the narrowing of band gap in composite form of ZnO with PbO. Photoelectrochemical properties of the as-synthesized ZnO–PbO composite thin ﬁlms investigated in the presence of 0.5 M aqueous NaOH solution shows photocurrent density of 705 μA cm−2 at an applied potential of +0.8 VSCE. The charge transfer dynamics of thin films were also examined using an electrochemical impedance spectroscopy (EIS) technique.

AB - Bimetallic oxide composite has emerged as an effective stratagem to enhance the performance of metal oxide photoanodes. ZnO–PbO composite thin films were deposited onto fluorine doped tin oxide (FTO) coated glass substrates from a newly synthesized polymeric Zn–Pb based single source precursor {ZnPb(OAc)(TFA)3(THF)2}n via aerosol-assisted chemical vapor deposition (AACVD) technique. The precursor was synthesized by the reaction of zinc acetate dihydrate (Zn(CH3CO2)2⋅2H2O), and lead acetate trihydrate (Pb(CH3CO2)2⋅3H2O) in the presence of triﬂouroacetic acid using THF as a solvent. The prepared complex {ZnPb(OAc)(TFA)3(THF)2}n, was characterized by FTIR, NMR, and single crystal X-ray analysis. The polymeric precursor had melting point of 72 ᴼC and decomposed at 450 ᴼC with 36.6% residue as obtained via thermogravimetry (TG/DTG). X-ray diffraction and energy-dispersive X-ray spectroscopy studies of thin films predicted a prominent growth of ZnO–PbO crystallites onto FTO substrate. FESEM analysis illustrated a homogenous and smooth surface with evenly distributed microspheres. The direct band gap of ZnO–PbO composite, estimated by UV–Vis spectroscopy is 2.40 eV that proves the narrowing of band gap in composite form of ZnO with PbO. Photoelectrochemical properties of the as-synthesized ZnO–PbO composite thin ﬁlms investigated in the presence of 0.5 M aqueous NaOH solution shows photocurrent density of 705 μA cm−2 at an applied potential of +0.8 VSCE. The charge transfer dynamics of thin films were also examined using an electrochemical impedance spectroscopy (EIS) technique.

KW - Heterobimetallic single source precursor

KW - Photocatalytic activity

KW - Semiconductors

KW - Thin films

KW - ZnO–PbO binary Composite

U2 - 10.1016/j.jssc.2021.122642

DO - 10.1016/j.jssc.2021.122642

M3 - Journal article

AN - SCOPUS:85126179909

SN - 0022-4596

VL - 305

JO - Journal of Solid State Chemistry

JF - Journal of Solid State Chemistry

M1 - 122642

ER -

Single source precursor derived ZnO–PbO composite thin films for enhanced photocatalytic activity

Abstract

Bibliografisk note

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