Efficient Water Purification by Photocatalysis and Rapid Adsorption of Dip-Coated Metal Foam with Nanostructured Bismuth Vanadate

Hyun Yoon, Mukund G. Mali, Ha Yong Kim, Salem S. Al-Deyab, Suk Goo Yoon

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Rapid removal of the organic methylene blue (MB) dye was achieved by simple stirring of highly porous Ni-Fe-Cr-Al metal foam coated with bismuth vanadate (BiVO4). The metal foam was dip-coated with the BiVO4 solution precursor and annealed for an hour, through which the foam surface was decorated with the highly porous nanostructure, yielding high adsorptivity. This bismuth-decorated metal foam was characterized by X-ray diffraction, X-ray photoelectron, and scanning electron microscopy to elucidate its physical, chemical, and morphological properties. The modeled pollutant, MB, was stirred with the metal foam both in darkness and in light. Complete decolorization was observed for both of these conditions, which indicates that adsorption dominates over photocatalysis; we found that photocatalysis contributed to less than 10% of the purification process. We also demonstrated that it would be possible to recycle the metal foam as many as 20 times, beyond which its purification capability degrades. However, the MB residues on the foam can be removed by simple annealing; thus, in theory the foam can be recycled indefinitely.

Original languageEnglish
Pages (from-to)1023-1030
Number of pages8
JournalJournal of the American Ceramic Society
Volume99
Issue number3
DOIs
Publication statusPublished - 2016 Mar 1

Fingerprint

bismuth
Photocatalysis
Bismuth
foam
Purification
Foams
dip
Metals
adsorption
Adsorption
Water
metal
Methylene Blue
purification
bismuth vanadium tetraoxide
water purification
annealing
Photoelectrons
Nanostructures
dye

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

Cite this

Efficient Water Purification by Photocatalysis and Rapid Adsorption of Dip-Coated Metal Foam with Nanostructured Bismuth Vanadate. / Yoon, Hyun; Mali, Mukund G.; Kim, Ha Yong; Al-Deyab, Salem S.; Yoon, Suk Goo.

In: Journal of the American Ceramic Society, Vol. 99, No. 3, 01.03.2016, p. 1023-1030.

Research output: Contribution to journalArticle

@article{fc9d333a63dc45528ef600ca7d5ba47f,
title = "Efficient Water Purification by Photocatalysis and Rapid Adsorption of Dip-Coated Metal Foam with Nanostructured Bismuth Vanadate",
abstract = "Rapid removal of the organic methylene blue (MB) dye was achieved by simple stirring of highly porous Ni-Fe-Cr-Al metal foam coated with bismuth vanadate (BiVO4). The metal foam was dip-coated with the BiVO4 solution precursor and annealed for an hour, through which the foam surface was decorated with the highly porous nanostructure, yielding high adsorptivity. This bismuth-decorated metal foam was characterized by X-ray diffraction, X-ray photoelectron, and scanning electron microscopy to elucidate its physical, chemical, and morphological properties. The modeled pollutant, MB, was stirred with the metal foam both in darkness and in light. Complete decolorization was observed for both of these conditions, which indicates that adsorption dominates over photocatalysis; we found that photocatalysis contributed to less than 10{\%} of the purification process. We also demonstrated that it would be possible to recycle the metal foam as many as 20 times, beyond which its purification capability degrades. However, the MB residues on the foam can be removed by simple annealing; thus, in theory the foam can be recycled indefinitely.",
author = "Hyun Yoon and Mali, {Mukund G.} and Kim, {Ha Yong} and Al-Deyab, {Salem S.} and Yoon, {Suk Goo}",
year = "2016",
month = "3",
day = "1",
doi = "10.1111/jace.13993",
language = "English",
volume = "99",
pages = "1023--1030",
journal = "Journal of the American Ceramic Society",
issn = "0002-7820",
publisher = "Wiley-Blackwell",
number = "3",

}

TY - JOUR

T1 - Efficient Water Purification by Photocatalysis and Rapid Adsorption of Dip-Coated Metal Foam with Nanostructured Bismuth Vanadate

AU - Yoon, Hyun

AU - Mali, Mukund G.

AU - Kim, Ha Yong

AU - Al-Deyab, Salem S.

AU - Yoon, Suk Goo

PY - 2016/3/1

Y1 - 2016/3/1

N2 - Rapid removal of the organic methylene blue (MB) dye was achieved by simple stirring of highly porous Ni-Fe-Cr-Al metal foam coated with bismuth vanadate (BiVO4). The metal foam was dip-coated with the BiVO4 solution precursor and annealed for an hour, through which the foam surface was decorated with the highly porous nanostructure, yielding high adsorptivity. This bismuth-decorated metal foam was characterized by X-ray diffraction, X-ray photoelectron, and scanning electron microscopy to elucidate its physical, chemical, and morphological properties. The modeled pollutant, MB, was stirred with the metal foam both in darkness and in light. Complete decolorization was observed for both of these conditions, which indicates that adsorption dominates over photocatalysis; we found that photocatalysis contributed to less than 10% of the purification process. We also demonstrated that it would be possible to recycle the metal foam as many as 20 times, beyond which its purification capability degrades. However, the MB residues on the foam can be removed by simple annealing; thus, in theory the foam can be recycled indefinitely.

AB - Rapid removal of the organic methylene blue (MB) dye was achieved by simple stirring of highly porous Ni-Fe-Cr-Al metal foam coated with bismuth vanadate (BiVO4). The metal foam was dip-coated with the BiVO4 solution precursor and annealed for an hour, through which the foam surface was decorated with the highly porous nanostructure, yielding high adsorptivity. This bismuth-decorated metal foam was characterized by X-ray diffraction, X-ray photoelectron, and scanning electron microscopy to elucidate its physical, chemical, and morphological properties. The modeled pollutant, MB, was stirred with the metal foam both in darkness and in light. Complete decolorization was observed for both of these conditions, which indicates that adsorption dominates over photocatalysis; we found that photocatalysis contributed to less than 10% of the purification process. We also demonstrated that it would be possible to recycle the metal foam as many as 20 times, beyond which its purification capability degrades. However, the MB residues on the foam can be removed by simple annealing; thus, in theory the foam can be recycled indefinitely.

UR - http://www.scopus.com/inward/record.url?scp=84959330161&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84959330161&partnerID=8YFLogxK

U2 - 10.1111/jace.13993

DO - 10.1111/jace.13993

M3 - Article

AN - SCOPUS:84959330161

VL - 99

SP - 1023

EP - 1030

JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

SN - 0002-7820

IS - 3

ER -