Complex Oxides Based on Silver, Bismuth, and Tungsten: Syntheses, Characterization, and Photoelectrochemical Behavior

C. Longo; M. T. Galante; R. Fitzmorris; J. Z. Zhang; S. F.R. Taylor; J. Mohapatra; J. P. Liu; L. G.T.A. Duarte; M. K. Hossain; C. Hardacre; K. Rajeshwar

doi:10.1021/acs.jpcc.7b11924

Complex Oxides Based on Silver, Bismuth, and Tungsten: Syntheses, Characterization, and Photoelectrochemical Behavior

C. Longo, M. T. Galante, R. Fitzmorris, J. Z. Zhang, S. F.R. Taylor, J. Mohapatra, J. P. Liu, L. G.T.A. Duarte, M. K. Hossain, C. Hardacre, K. Rajeshwar

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

10 Citations (Scopus)

Abstract

Silver-containing complex oxides present interesting light absorption and electronic properties pointing to their applicability for solar fuel generation and environmental remediation. In this vein, the syntheses, characterization, and photoelectrochemical properties of the Aurivillius oxide, AgBiW₂O₈, and a triphasic material, AgBiW₂O₈/Bi₂WO₆/Ag, are described herein. From UV-vis diffuse reflectance analysis, both oxides' nanoparticles exhibited intense absorption at wavelengths <455 nm, with an additional band centered at ∼500 nm for the triphasic material, attributed to surface plasmon resonance of the metallic Ag phase. The triphasic material was further characterized by a variety of structural and spectroscopic probes, indicating a defect-rich crystalline structure. Voltammetric measurements were performed in the dark and under simulated solar irradiation with polarization at potentials more negative than the rest potential. Thin film electrodes of both materials showed p-type semiconductor behavior, with enhanced cathodic photocurrent in the presence of electron acceptors in aqueous media.

Original language	English
Pages (from-to)	13473-13480
Number of pages	8
Journal	Journal Of Physical Chemistry C
Volume	122
Issue number	25
Early online date	8 Feb 2018
DOIs	https://doi.org/10.1021/acs.jpcc.7b11924
Publication status	Published (in print/issue) - 28 Jun 2018

Bibliographical note

Funding Information:
This work was supported, in part, by CNPq, FAPESP, the National Institute of Science, Technology, and Innovation on Advanced Complex Materials (INOMAT), and The University of Texas at Arlington. C.L. and M.T.G. gratefully acknowledge the CAPES−PDSE program for financial support (88881.131530/2016-01) and the Fulbright and Royal Society of Chemistry for scholarships. C.H. and R.T. gratefully acknowledge funding from the EPSRC (EP/N009533/1). Dr. Teresa Atvars (UNICAMP) provided the photoluminescence spectroscopy instrument setup. Finally, we thank the two anonymous reviewers for their insightful comments and constructive criticisms.

Publisher Copyright:
© 2018 American Chemical Society.

Access to Document

10.1021/acs.jpcc.7b11924

Cite this

Longo, C., Galante, M. T., Fitzmorris, R., Zhang, J. Z., Taylor, S. F. R., Mohapatra, J., Liu, J. P., Duarte, L. G. T. A., Hossain, M. K., Hardacre, C., & Rajeshwar, K. (2018). Complex Oxides Based on Silver, Bismuth, and Tungsten: Syntheses, Characterization, and Photoelectrochemical Behavior. Journal Of Physical Chemistry C, 122(25), 13473-13480. Advance online publication. https://doi.org/10.1021/acs.jpcc.7b11924

@article{fc42656fd6424f5188cc5ba93ca34ac7,

title = "Complex Oxides Based on Silver, Bismuth, and Tungsten: Syntheses, Characterization, and Photoelectrochemical Behavior",

abstract = "Silver-containing complex oxides present interesting light absorption and electronic properties pointing to their applicability for solar fuel generation and environmental remediation. In this vein, the syntheses, characterization, and photoelectrochemical properties of the Aurivillius oxide, AgBiW2O8, and a triphasic material, AgBiW2O8/Bi2WO6/Ag, are described herein. From UV-vis diffuse reflectance analysis, both oxides' nanoparticles exhibited intense absorption at wavelengths <455 nm, with an additional band centered at ∼500 nm for the triphasic material, attributed to surface plasmon resonance of the metallic Ag phase. The triphasic material was further characterized by a variety of structural and spectroscopic probes, indicating a defect-rich crystalline structure. Voltammetric measurements were performed in the dark and under simulated solar irradiation with polarization at potentials more negative than the rest potential. Thin film electrodes of both materials showed p-type semiconductor behavior, with enhanced cathodic photocurrent in the presence of electron acceptors in aqueous media.",

author = "C. Longo and Galante, {M. T.} and R. Fitzmorris and Zhang, {J. Z.} and Taylor, {S. F.R.} and J. Mohapatra and Liu, {J. P.} and Duarte, {L. G.T.A.} and Hossain, {M. K.} and C. Hardacre and K. Rajeshwar",

note = "Funding Information: This work was supported, in part, by CNPq, FAPESP, the National Institute of Science, Technology, and Innovation on Advanced Complex Materials (INOMAT), and The University of Texas at Arlington. C.L. and M.T.G. gratefully acknowledge the CAPES−PDSE program for financial support (88881.131530/2016-01) and the Fulbright and Royal Society of Chemistry for scholarships. C.H. and R.T. gratefully acknowledge funding from the EPSRC (EP/N009533/1). Dr. Teresa Atvars (UNICAMP) provided the photoluminescence spectroscopy instrument setup. Finally, we thank the two anonymous reviewers for their insightful comments and constructive criticisms. Publisher Copyright: {\textcopyright} 2018 American Chemical Society.",

year = "2018",

month = jun,

day = "28",

doi = "10.1021/acs.jpcc.7b11924",

language = "English",

volume = "122",

pages = "13473--13480",

journal = "Journal Of Physical Chemistry C",

issn = "1932-7447",

publisher = "American Chemical Society",

number = "25",

}

Longo, C, Galante, MT, Fitzmorris, R, Zhang, JZ, Taylor, SFR, Mohapatra, J, Liu, JP, Duarte, LGTA, Hossain, MK, Hardacre, C & Rajeshwar, K 2018, 'Complex Oxides Based on Silver, Bismuth, and Tungsten: Syntheses, Characterization, and Photoelectrochemical Behavior', Journal Of Physical Chemistry C, vol. 122, no. 25, pp. 13473-13480. https://doi.org/10.1021/acs.jpcc.7b11924

TY - JOUR

T1 - Complex Oxides Based on Silver, Bismuth, and Tungsten

T2 - Syntheses, Characterization, and Photoelectrochemical Behavior

AU - Longo, C.

AU - Galante, M. T.

AU - Fitzmorris, R.

AU - Zhang, J. Z.

AU - Taylor, S. F.R.

AU - Mohapatra, J.

AU - Liu, J. P.

AU - Duarte, L. G.T.A.

AU - Hossain, M. K.

AU - Hardacre, C.

AU - Rajeshwar, K.

N1 - Funding Information: This work was supported, in part, by CNPq, FAPESP, the National Institute of Science, Technology, and Innovation on Advanced Complex Materials (INOMAT), and The University of Texas at Arlington. C.L. and M.T.G. gratefully acknowledge the CAPES−PDSE program for financial support (88881.131530/2016-01) and the Fulbright and Royal Society of Chemistry for scholarships. C.H. and R.T. gratefully acknowledge funding from the EPSRC (EP/N009533/1). Dr. Teresa Atvars (UNICAMP) provided the photoluminescence spectroscopy instrument setup. Finally, we thank the two anonymous reviewers for their insightful comments and constructive criticisms. Publisher Copyright: © 2018 American Chemical Society.

PY - 2018/6/28

Y1 - 2018/6/28

N2 - Silver-containing complex oxides present interesting light absorption and electronic properties pointing to their applicability for solar fuel generation and environmental remediation. In this vein, the syntheses, characterization, and photoelectrochemical properties of the Aurivillius oxide, AgBiW2O8, and a triphasic material, AgBiW2O8/Bi2WO6/Ag, are described herein. From UV-vis diffuse reflectance analysis, both oxides' nanoparticles exhibited intense absorption at wavelengths <455 nm, with an additional band centered at ∼500 nm for the triphasic material, attributed to surface plasmon resonance of the metallic Ag phase. The triphasic material was further characterized by a variety of structural and spectroscopic probes, indicating a defect-rich crystalline structure. Voltammetric measurements were performed in the dark and under simulated solar irradiation with polarization at potentials more negative than the rest potential. Thin film electrodes of both materials showed p-type semiconductor behavior, with enhanced cathodic photocurrent in the presence of electron acceptors in aqueous media.

AB - Silver-containing complex oxides present interesting light absorption and electronic properties pointing to their applicability for solar fuel generation and environmental remediation. In this vein, the syntheses, characterization, and photoelectrochemical properties of the Aurivillius oxide, AgBiW2O8, and a triphasic material, AgBiW2O8/Bi2WO6/Ag, are described herein. From UV-vis diffuse reflectance analysis, both oxides' nanoparticles exhibited intense absorption at wavelengths <455 nm, with an additional band centered at ∼500 nm for the triphasic material, attributed to surface plasmon resonance of the metallic Ag phase. The triphasic material was further characterized by a variety of structural and spectroscopic probes, indicating a defect-rich crystalline structure. Voltammetric measurements were performed in the dark and under simulated solar irradiation with polarization at potentials more negative than the rest potential. Thin film electrodes of both materials showed p-type semiconductor behavior, with enhanced cathodic photocurrent in the presence of electron acceptors in aqueous media.

UR - http://www.scopus.com/inward/record.url?scp=85049399585&partnerID=8YFLogxK

U2 - 10.1021/acs.jpcc.7b11924

DO - 10.1021/acs.jpcc.7b11924

M3 - Article

AN - SCOPUS:85049399585

SN - 1932-7447

VL - 122

SP - 13473

EP - 13480

JO - Journal Of Physical Chemistry C

JF - Journal Of Physical Chemistry C

IS - 25

ER -

Complex Oxides Based on Silver, Bismuth, and Tungsten: Syntheses, Characterization, and Photoelectrochemical Behavior

Abstract

Bibliographical note

Access to Document

Other files and links

Fingerprint

Cite this