Impact of heat treatment and composition of ZnO-TiO2 nanoparticles for photocatalytic oxidation of an azo dye

William L. Kostedt IV; Adel A. Ismail; David W. Mazyc

doi:10.1021/ie071255p

Impact of heat treatment and composition of ZnO-TiO₂ nanoparticles for photocatalytic oxidation of an azo dye

William L. Kostedt IV
, Adel A. Ismail
, David W. Mazyc

School of Engineering Design and Innovation

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

121 Scopus citations

Abstract

TiO₂-ZnO mixed oxide nanoparticles were synthesized by precipitation of zinc nitrate and titanium tetrachloride as precursors and then heat treated using two techniques: hydrothermal and calcination. The particles were characterized using XRD, BET, UV diffuse reflectance, and ζ potential techniques. Additionally, the particles were tested for their ability to induce the photocatalytic oxidation and adsorption of Procion Red MX-5B dye. The highest photocatalytic oxidation was observed for nanoparticulate mixed oxides that were near 100% ZnO or TiO₂. These materials did not have the highest specific surface areas, yet it is believed that their near-neutral ζ potentials and ideal band gap energies contributed to their higher photocatalytic activities. XRD patterns indicated that sintering and increased crystallinity occurred for the calcined TiO₂ samples.

Original language	English (US)
Pages (from-to)	1483-1487
Number of pages	5
Journal	Industrial and Engineering Chemistry Research
Volume	47
Issue number	5
DOIs	https://doi.org/10.1021/ie071255p
State	Published - Mar 5 2008

All Science Journal Classification (ASJC) codes

General Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering

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title = "Impact of heat treatment and composition of ZnO-TiO2 nanoparticles for photocatalytic oxidation of an azo dye",

abstract = "TiO2-ZnO mixed oxide nanoparticles were synthesized by precipitation of zinc nitrate and titanium tetrachloride as precursors and then heat treated using two techniques: hydrothermal and calcination. The particles were characterized using XRD, BET, UV diffuse reflectance, and ζ potential techniques. Additionally, the particles were tested for their ability to induce the photocatalytic oxidation and adsorption of Procion Red MX-5B dye. The highest photocatalytic oxidation was observed for nanoparticulate mixed oxides that were near 100\% ZnO or TiO2. These materials did not have the highest specific surface areas, yet it is believed that their near-neutral ζ potentials and ideal band gap energies contributed to their higher photocatalytic activities. XRD patterns indicated that sintering and increased crystallinity occurred for the calcined TiO2 samples.",

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TY - JOUR

T1 - Impact of heat treatment and composition of ZnO-TiO2 nanoparticles for photocatalytic oxidation of an azo dye

AU - Kostedt IV, William L.

AU - Ismail, Adel A.

AU - Mazyc, David W.

PY - 2008/3/5

Y1 - 2008/3/5

N2 - TiO2-ZnO mixed oxide nanoparticles were synthesized by precipitation of zinc nitrate and titanium tetrachloride as precursors and then heat treated using two techniques: hydrothermal and calcination. The particles were characterized using XRD, BET, UV diffuse reflectance, and ζ potential techniques. Additionally, the particles were tested for their ability to induce the photocatalytic oxidation and adsorption of Procion Red MX-5B dye. The highest photocatalytic oxidation was observed for nanoparticulate mixed oxides that were near 100% ZnO or TiO2. These materials did not have the highest specific surface areas, yet it is believed that their near-neutral ζ potentials and ideal band gap energies contributed to their higher photocatalytic activities. XRD patterns indicated that sintering and increased crystallinity occurred for the calcined TiO2 samples.

AB - TiO2-ZnO mixed oxide nanoparticles were synthesized by precipitation of zinc nitrate and titanium tetrachloride as precursors and then heat treated using two techniques: hydrothermal and calcination. The particles were characterized using XRD, BET, UV diffuse reflectance, and ζ potential techniques. Additionally, the particles were tested for their ability to induce the photocatalytic oxidation and adsorption of Procion Red MX-5B dye. The highest photocatalytic oxidation was observed for nanoparticulate mixed oxides that were near 100% ZnO or TiO2. These materials did not have the highest specific surface areas, yet it is believed that their near-neutral ζ potentials and ideal band gap energies contributed to their higher photocatalytic activities. XRD patterns indicated that sintering and increased crystallinity occurred for the calcined TiO2 samples.

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U2 - 10.1021/ie071255p

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AN - SCOPUS:41749125034

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JO - Industrial and Engineering Chemistry Research

JF - Industrial and Engineering Chemistry Research

IS - 5

ER -

Impact of heat treatment and composition of ZnO-TiO₂ nanoparticles for photocatalytic oxidation of an azo dye

Abstract

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