Improved photocatalytic activity of nano CuO-incorporated TiO2 granules prepared by spray drying

Zongjie Liu; Chungen Zhou

doi:10.1016/j.pnsc.2015.07.005

Improved photocatalytic activity of nano CuO-incorporated TiO₂ granules prepared by spray drying

Zongjie Liu
, Chungen Zhou^*

^*Corresponding author for this work

School of Materials Science and Engineering

Beihang University

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

64 Scopus citations

Abstract

4wt% CuO-96wt% TiO₂ granules were prepared by a spray drying process. The microstructure and optical property of CuO-TiO₂ granules were studied. The results indicate that copper existed in the form of CuO. The spray dried granules possess spherical geometry and smooth surface with grain size in the range of 40-80μm. CuO-TiO₂ has a relatively smaller E_g value (2.85eV) than TiO₂ (3.17eV). The photocatalytic property of CuO-TiO₂ granules was investigated by degradation of a model pollutant (the azo dye methyl orange) under the irradiation of the xenon lamp equipped with a band pass filter of 365nm. The CuO-TiO₂ spray-dried granules degrade about 10% more MO than TiO₂ spray-dried granules under UV irradiation within the same time. The XPS spectra suggested that Cu²⁺ and reduced copper species were coexistent in reacted CuO-TiO₂ photocatalyst. The improvement of photocatalytic activity for CuO-TiO₂ was mainly attributed to effective separation of photo-generated electron-hole pairs in the presence of CuO.

Original language	English
Pages (from-to)	334-341
Number of pages	8
Journal	Progress in Natural Science: Materials International
Volume	25
Issue number	4
DOIs	https://doi.org/10.1016/j.pnsc.2015.07.005
State	Published - 1 Aug 2015

Keywords

CuO-TiO
Photocatalytic degradation
Spray drying

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title = "Improved photocatalytic activity of nano CuO-incorporated TiO2 granules prepared by spray drying",

abstract = "4wt\% CuO-96wt\% TiO2 granules were prepared by a spray drying process. The microstructure and optical property of CuO-TiO2 granules were studied. The results indicate that copper existed in the form of CuO. The spray dried granules possess spherical geometry and smooth surface with grain size in the range of 40-80μm. CuO-TiO2 has a relatively smaller Eg value (2.85eV) than TiO2 (3.17eV). The photocatalytic property of CuO-TiO2 granules was investigated by degradation of a model pollutant (the azo dye methyl orange) under the irradiation of the xenon lamp equipped with a band pass filter of 365nm. The CuO-TiO2 spray-dried granules degrade about 10\% more MO than TiO2 spray-dried granules under UV irradiation within the same time. The XPS spectra suggested that Cu2+ and reduced copper species were coexistent in reacted CuO-TiO2 photocatalyst. The improvement of photocatalytic activity for CuO-TiO2 was mainly attributed to effective separation of photo-generated electron-hole pairs in the presence of CuO.",

keywords = "CuO-TiO, Photocatalytic degradation, Spray drying",

author = "Zongjie Liu and Chungen Zhou",

note = "Publisher Copyright: {\textcopyright} 2015 Chinese Materials Research Society.",

year = "2015",

month = aug,

day = "1",

doi = "10.1016/j.pnsc.2015.07.005",

language = "英语",

volume = "25",

pages = "334--341",

journal = "Progress in Natural Science: Materials International",

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TY - JOUR

T1 - Improved photocatalytic activity of nano CuO-incorporated TiO2 granules prepared by spray drying

AU - Liu, Zongjie

AU - Zhou, Chungen

PY - 2015/8/1

Y1 - 2015/8/1

N2 - 4wt% CuO-96wt% TiO2 granules were prepared by a spray drying process. The microstructure and optical property of CuO-TiO2 granules were studied. The results indicate that copper existed in the form of CuO. The spray dried granules possess spherical geometry and smooth surface with grain size in the range of 40-80μm. CuO-TiO2 has a relatively smaller Eg value (2.85eV) than TiO2 (3.17eV). The photocatalytic property of CuO-TiO2 granules was investigated by degradation of a model pollutant (the azo dye methyl orange) under the irradiation of the xenon lamp equipped with a band pass filter of 365nm. The CuO-TiO2 spray-dried granules degrade about 10% more MO than TiO2 spray-dried granules under UV irradiation within the same time. The XPS spectra suggested that Cu2+ and reduced copper species were coexistent in reacted CuO-TiO2 photocatalyst. The improvement of photocatalytic activity for CuO-TiO2 was mainly attributed to effective separation of photo-generated electron-hole pairs in the presence of CuO.

AB - 4wt% CuO-96wt% TiO2 granules were prepared by a spray drying process. The microstructure and optical property of CuO-TiO2 granules were studied. The results indicate that copper existed in the form of CuO. The spray dried granules possess spherical geometry and smooth surface with grain size in the range of 40-80μm. CuO-TiO2 has a relatively smaller Eg value (2.85eV) than TiO2 (3.17eV). The photocatalytic property of CuO-TiO2 granules was investigated by degradation of a model pollutant (the azo dye methyl orange) under the irradiation of the xenon lamp equipped with a band pass filter of 365nm. The CuO-TiO2 spray-dried granules degrade about 10% more MO than TiO2 spray-dried granules under UV irradiation within the same time. The XPS spectra suggested that Cu2+ and reduced copper species were coexistent in reacted CuO-TiO2 photocatalyst. The improvement of photocatalytic activity for CuO-TiO2 was mainly attributed to effective separation of photo-generated electron-hole pairs in the presence of CuO.

KW - CuO-TiO

KW - Photocatalytic degradation

KW - Spray drying

UR - https://www.scopus.com/pages/publications/84942194864

U2 - 10.1016/j.pnsc.2015.07.005

DO - 10.1016/j.pnsc.2015.07.005

M3 - 文章

AN - SCOPUS:84942194864

SN - 1002-0071

VL - 25

SP - 334

EP - 341

JO - Progress in Natural Science: Materials International

JF - Progress in Natural Science: Materials International

IS - 4

ER -

Improved photocatalytic activity of nano CuO-incorporated TiO₂ granules prepared by spray drying

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Keywords

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