首页|Nanostructured ZnO/BiVO4 I-scheme heterojunctions for piezocatalytic degradation of organic dyes via harvesting ultrasonic vibration energy
Nanostructured ZnO/BiVO4 I-scheme heterojunctions for piezocatalytic degradation of organic dyes via harvesting ultrasonic vibration energy
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BiVO4 porous spheres modified by ZnO were designed and synthesized using a facile two-step method.The resulting ZnO/BiVO4 composite catalysts have shown remarkable efficiency as piezoelectric catalysts for degrading Rhodamine B(RhB)under mechanical vibrations,they exhibit superior activity compared to pure ZnO.The 40wt％ZnO/BiVO4 heterojunction composite displayed the highest activity,along with good stability and recyclability.The enhanced piezoelectric catalytic activity can be attributed to the form-ation of an I-scheme heterojunction structure,which can effectively inhibit the electron-hole recombination.Furthermore,hole(h+)and superoxide radical(·O2-)are proved to be the primary active species.Therefore,ZnO/BiVO4 stands as an efficient and stable piezoelectric catalyst with broad potential application in the field of environmental water pollution treatment.
Key Laboratory of the Ministry of Education for Advanced Catalysis Materials,College of Chemistry and Materials Science,Zhejiang Normal University,Jinhua 321004,China
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