Generation of Hydrogen Peroxide by Single-Atom Clusters Pd Anchored on t-BaTiO3 for Piezoelectric Degradation of Tetracycline

서지정보

ㆍ발행기관 : 한국재료학회 ㆍ수록지정보 : 한국재료학회지 / 33권 / 11호
ㆍ저자명 : Xin Ni, Yuan Liang, Quanzi Pan, Hengjie Guo, Kai Chen, Bo Zhang, Shaocong Ni, Bin Sheng, Zeda Meng, Shouqing Liu, Won-Chun Oh

목차

1. Introduction
2. Experimental Procedure
2.1. Chemicals
2.2. Anchoring monoatomic Pd to BaTiO3
2.3. Characterization and piezoelectric activity test
3. Results and Discussion
3.1. XRD characterization
3.2. TEM and HAADF-STEM observations
3.3. XPS characterization
3.4. Piezoelectric properties of the samples
3.5. Degradation of tetracycline
4. Conclusion

영어 초록

Single-atom Pd clusters anchored on t-BaTiO3 material was synthesized using hydrothermal and ultrasonic methods for the effective piezoelectric catalytic degradation of pollutants using vibration energy. XRD patterns of BaTiO3 loaded with monoatomic Pd were obtained before and after calcining, and showed typical cubic-phase BTO. TEM and HAADF-STEM images indicated single-atom Pd clusters were successfully introduced into the BaTiO3. The piezoelectric current density of the prepared Pd-BaTiO3 binary composite was significantly higher than that of the pristine BaTiO3. Under mechanical vibration, the nanomaterial exhibited a tetracycline decomposition rate of ~95 % within 7 h, which is much higher than the degradation rate of 56.7 % observed with pure BaTiO3. Many of the piezo-induced electrons escaped to the Pd-doped BaTiO3 interface because of Pd’s excellent conductivity. Single-atom Pd clusters help promote the separation of the piezo-induced electrons, thereby achieving synergistic catalysis. This work demonstrates the feasibility of combining ultrasonic technology with the piezoelectric effect and provides a promising strategy for the development of ultrasonic and piezoelectric materials.

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