Spray pyrolysis synthesis of mesoporous TiO2 microspheres and their post modification for improved photocatalytic activity

Jaehyung Choi; Kye Sang Yoo; Jinsoo Kim

doi:10.1007/s11814-018-0176-8

Spray pyrolysis synthesis of mesoporous TiO₂ microspheres and their post modification for improved photocatalytic activity

Jaehyung Choi, Kye Sang Yoo, Jinsoo Kim

Dept. of Chemical and Biomolecular Engineering

Kyung Hee University

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

16 Scopus citations

Abstract

Mesoporous TiO₂ microspheres were prepared by spray pyrolysis for photocatalysis. Post modification of TiO₂ by heat treatment was performed to optimize its photocatalytic performance. First, spherical TiO₂ particles with mesoporous structure were synthesized at pyrolysis temperatures of 500, 600, and 700 °C. After characterization by XRD, SEM, and N₂ adsorption, a sample prepared at 500 °C was found to possess desirable properties for photocatalytic performance through post-modification. In methylene blue degradation, mesoporous TiO₂ microspheres synthesized at 500 °C outperformed other microspheres. Furthermore, samples obtained by spray pyrolysis at 500 °C were calcined at various temperatures as a post-modification process. The sample calcined at 350 °C showed improved photocatalytic activity due to optimal anatase crystallinity and surface area.

Original language	English
Pages (from-to)	2480-2486
Number of pages	7
Journal	Korean Journal of Chemical Engineering
Volume	35
Issue number	12
DOIs	https://doi.org/10.1007/s11814-018-0176-8
State	Published - 1 Dec 2018

Keywords

MB Degradation
Mesoporous TiO Spheres
Post Modification
Spray Pyrolysis

Access to Document

10.1007/s11814-018-0176-8

Cite this

@article{3da984dbc14d483a8175277491d46c56,

title = "Spray pyrolysis synthesis of mesoporous TiO2 microspheres and their post modification for improved photocatalytic activity",

abstract = "Mesoporous TiO2 microspheres were prepared by spray pyrolysis for photocatalysis. Post modification of TiO2 by heat treatment was performed to optimize its photocatalytic performance. First, spherical TiO2 particles with mesoporous structure were synthesized at pyrolysis temperatures of 500, 600, and 700 °C. After characterization by XRD, SEM, and N2 adsorption, a sample prepared at 500 °C was found to possess desirable properties for photocatalytic performance through post-modification. In methylene blue degradation, mesoporous TiO2 microspheres synthesized at 500 °C outperformed other microspheres. Furthermore, samples obtained by spray pyrolysis at 500 °C were calcined at various temperatures as a post-modification process. The sample calcined at 350 °C showed improved photocatalytic activity due to optimal anatase crystallinity and surface area.",

keywords = "MB Degradation, Mesoporous TiO Spheres, Post Modification, Spray Pyrolysis",

author = "Jaehyung Choi and Yoo, \{Kye Sang\} and Jinsoo Kim",

note = "Publisher Copyright: {\textcopyright} 2018, Korean Institute of Chemical Engineers, Seoul, Korea.",

year = "2018",

month = dec,

day = "1",

doi = "10.1007/s11814-018-0176-8",

language = "English",

volume = "35",

pages = "2480--2486",

journal = "Korean Journal of Chemical Engineering",

issn = "0256-1115",

number = "12",

}

TY - JOUR

T1 - Spray pyrolysis synthesis of mesoporous TiO2 microspheres and their post modification for improved photocatalytic activity

AU - Choi, Jaehyung

AU - Yoo, Kye Sang

AU - Kim, Jinsoo

PY - 2018/12/1

Y1 - 2018/12/1

N2 - Mesoporous TiO2 microspheres were prepared by spray pyrolysis for photocatalysis. Post modification of TiO2 by heat treatment was performed to optimize its photocatalytic performance. First, spherical TiO2 particles with mesoporous structure were synthesized at pyrolysis temperatures of 500, 600, and 700 °C. After characterization by XRD, SEM, and N2 adsorption, a sample prepared at 500 °C was found to possess desirable properties for photocatalytic performance through post-modification. In methylene blue degradation, mesoporous TiO2 microspheres synthesized at 500 °C outperformed other microspheres. Furthermore, samples obtained by spray pyrolysis at 500 °C were calcined at various temperatures as a post-modification process. The sample calcined at 350 °C showed improved photocatalytic activity due to optimal anatase crystallinity and surface area.

AB - Mesoporous TiO2 microspheres were prepared by spray pyrolysis for photocatalysis. Post modification of TiO2 by heat treatment was performed to optimize its photocatalytic performance. First, spherical TiO2 particles with mesoporous structure were synthesized at pyrolysis temperatures of 500, 600, and 700 °C. After characterization by XRD, SEM, and N2 adsorption, a sample prepared at 500 °C was found to possess desirable properties for photocatalytic performance through post-modification. In methylene blue degradation, mesoporous TiO2 microspheres synthesized at 500 °C outperformed other microspheres. Furthermore, samples obtained by spray pyrolysis at 500 °C were calcined at various temperatures as a post-modification process. The sample calcined at 350 °C showed improved photocatalytic activity due to optimal anatase crystallinity and surface area.

KW - MB Degradation

KW - Mesoporous TiO Spheres

KW - Post Modification

KW - Spray Pyrolysis

UR - http://www.scopus.com/inward/record.url?scp=85056834154&partnerID=8YFLogxK

U2 - 10.1007/s11814-018-0176-8

DO - 10.1007/s11814-018-0176-8

M3 - Article

AN - SCOPUS:85056834154

SN - 0256-1115

VL - 35

SP - 2480

EP - 2486

JO - Korean Journal of Chemical Engineering

JF - Korean Journal of Chemical Engineering

IS - 12

ER -

Spray pyrolysis synthesis of mesoporous TiO₂ microspheres and their post modification for improved photocatalytic activity

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this