Abstract
Piezoelectric nanomaterials have been utilized to realize effective charge separation for degrading organic pollutants in water under the action of mechanical vibrations. However, in particulate form, the nanostructured piezoelectric catalysts can flow into the aqueous pollutant and limit its recyclability and reuse. Here, we report a new method of using a barium titanate (BaTiO 3, BTO)-polydimethylsiloxane composite porous foam catalyst to address the challenge of secondary pollution and reusable limits. Piezo-catalytic dye degradation activity of the porous foam can degrade a Rhodamine B (RhB) dye solution by ∼94%, and the composite material exhibits excellent stability after repeated decomposition of 12 cycles. It is suggested that under ultrasonic vibrations, the piezoelectric BTO materials create separated electron-hole pairs that react with hydroxyl ions and oxygen molecules to generate superoxide ( •O 2 -) and hydroxyl ( •OH) radicals for organic dye degradation. The degradation efficiency of RhB is associated with the piezoelectric constant, the specific surface area, and the shape of the material.
| Original language | English |
|---|---|
| Pages (from-to) | 27862-27869 |
| Number of pages | 8 |
| Journal | ACS Applied Materials and Interfaces |
| Volume | 11 |
| Issue number | 31 |
| Early online date | 15 Jul 2019 |
| DOIs | |
| Publication status | Published - 15 Jul 2019 |
Keywords
- barium titanate
- composite porous foam
- dye degradation
- piezo-catalysis
- piezoelectric effect
ASJC Scopus subject areas
- Materials Science(all)
Cite this
Piezoelectric Material-Polymer Composite Porous Foam for Efficient Dye Degradation via the Piezo-Catalytic Effect. / Qian, Weiqi; Zhao, Kun; Zhang, Ding; Bowen, Chris R.; Wang, Yuanhao; Yang, Ya.
In: ACS Applied Materials and Interfaces, Vol. 11, No. 31, 15.07.2019, p. 27862-27869.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Piezoelectric Material-Polymer Composite Porous Foam for Efficient Dye Degradation via the Piezo-Catalytic Effect
AU - Qian, Weiqi
AU - Zhao, Kun
AU - Zhang, Ding
AU - Bowen, Chris R.
AU - Wang, Yuanhao
AU - Yang, Ya
PY - 2019/7/15
Y1 - 2019/7/15
N2 - Piezoelectric nanomaterials have been utilized to realize effective charge separation for degrading organic pollutants in water under the action of mechanical vibrations. However, in particulate form, the nanostructured piezoelectric catalysts can flow into the aqueous pollutant and limit its recyclability and reuse. Here, we report a new method of using a barium titanate (BaTiO 3, BTO)-polydimethylsiloxane composite porous foam catalyst to address the challenge of secondary pollution and reusable limits. Piezo-catalytic dye degradation activity of the porous foam can degrade a Rhodamine B (RhB) dye solution by ∼94%, and the composite material exhibits excellent stability after repeated decomposition of 12 cycles. It is suggested that under ultrasonic vibrations, the piezoelectric BTO materials create separated electron-hole pairs that react with hydroxyl ions and oxygen molecules to generate superoxide ( •O 2 -) and hydroxyl ( •OH) radicals for organic dye degradation. The degradation efficiency of RhB is associated with the piezoelectric constant, the specific surface area, and the shape of the material.
AB - Piezoelectric nanomaterials have been utilized to realize effective charge separation for degrading organic pollutants in water under the action of mechanical vibrations. However, in particulate form, the nanostructured piezoelectric catalysts can flow into the aqueous pollutant and limit its recyclability and reuse. Here, we report a new method of using a barium titanate (BaTiO 3, BTO)-polydimethylsiloxane composite porous foam catalyst to address the challenge of secondary pollution and reusable limits. Piezo-catalytic dye degradation activity of the porous foam can degrade a Rhodamine B (RhB) dye solution by ∼94%, and the composite material exhibits excellent stability after repeated decomposition of 12 cycles. It is suggested that under ultrasonic vibrations, the piezoelectric BTO materials create separated electron-hole pairs that react with hydroxyl ions and oxygen molecules to generate superoxide ( •O 2 -) and hydroxyl ( •OH) radicals for organic dye degradation. The degradation efficiency of RhB is associated with the piezoelectric constant, the specific surface area, and the shape of the material.
KW - barium titanate
KW - composite porous foam
KW - dye degradation
KW - piezo-catalysis
KW - piezoelectric effect
UR - http://www.scopus.com/inward/record.url?scp=85070560879&partnerID=8YFLogxK
U2 - 10.1021/acsami.9b07857
DO - 10.1021/acsami.9b07857
M3 - Article
VL - 11
SP - 27862
EP - 27869
JO - ACS Applied Materials and Interfaces
JF - ACS Applied Materials and Interfaces
SN - 1944-8244
IS - 31
ER -