TY - JOUR
T1 - Enhanced photo-piezo-catalytic properties of Co-doped Ba0.85Ca0.15Zr0.1(Ti1-xCox)0.9 ferroelectric ceramics for dye degradation
AU - Zhao, Yan
AU - Xu, Qianqian
AU - Zhou, Xuefan
AU - Yan, Mingyang
AU - Gong, Hanyu
AU - Yuan, Xi
AU - Luo, Hang
AU - Zhou, Kechao
AU - Zhang, Dou
AU - Bowen, Chris
AU - Zhang, Yan
N1 - Funding Information:
The authors gratefully thank to the National Key R&D Program of China (No. 2022YFB3807400 ). This work was also supported by the Academy of Medical Sciences GCRF fund ( GCRFNGR2-10059 ); Key Research and Development Project of Hunan Province (No. 2020WK2004 ); National Natural Science Foundation of China (Nos. U19A2087 , 52002404 , 52102150 ); The Leverhulme Trust ( RGP-2018-290 ); and Overseas Talent Introduction Project of China.
PY - 2022/11/4
Y1 - 2022/11/4
N2 - This paper provides a detailed evaluation of the photo-piezo-catalytic properties of lead-free Ba0.85Ca0.15Zr0.1(Ti1-xCox)0.9(BCZT-xCo,x = 0–0.025) ferroelectric ceramics prepared by a solid-state process. By control of the Co doping level, the band gap was reduced to 2.40 eV at the composition x = 0.02, which improved the generation of photo-generated charges and enhanced the photocatalytic activity. When a solution containing BCZT-0.02Co particles was subjected to both ultrasound and illumination, the degree of degradation of Rhodamine B reached 99% within 60 min, which was grater than when subjected to illumination or ultrasound alone. Examination of the dielectric properties, photoelectrochemical measurements and band energy structure of the materials provided new insights into the catalytic mechanism, where a strong coupling between piezoelectricity and photoexcitation was clearly observed. This work therefore highlights the attractive photo-piezo-catalytic properties of BCZT-xCo doped ceramics and is the first demonstration that Co substitution in these lead-free ferroelectric ceramics provides significant potential for photo-piezo-catalysis applications.
AB - This paper provides a detailed evaluation of the photo-piezo-catalytic properties of lead-free Ba0.85Ca0.15Zr0.1(Ti1-xCox)0.9(BCZT-xCo,x = 0–0.025) ferroelectric ceramics prepared by a solid-state process. By control of the Co doping level, the band gap was reduced to 2.40 eV at the composition x = 0.02, which improved the generation of photo-generated charges and enhanced the photocatalytic activity. When a solution containing BCZT-0.02Co particles was subjected to both ultrasound and illumination, the degree of degradation of Rhodamine B reached 99% within 60 min, which was grater than when subjected to illumination or ultrasound alone. Examination of the dielectric properties, photoelectrochemical measurements and band energy structure of the materials provided new insights into the catalytic mechanism, where a strong coupling between piezoelectricity and photoexcitation was clearly observed. This work therefore highlights the attractive photo-piezo-catalytic properties of BCZT-xCo doped ceramics and is the first demonstration that Co substitution in these lead-free ferroelectric ceramics provides significant potential for photo-piezo-catalysis applications.
KW - Band gap decreasing
KW - Barium calcium zirconate titanate ceramics
KW - Doping modification
KW - Photo-piezo-catalysis
UR - http://www.scopus.com/inward/record.url?scp=85141982507&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2022.10.354
DO - 10.1016/j.ceramint.2022.10.354
M3 - Article
AN - SCOPUS:85141982507
JO - Ceramics International
JF - Ceramics International
SN - 0272-8842
ER -