首页|Efficient piezo-catalytic dye degradation using piezoelectric 6H-SiC under harsh conditions

Efficient piezo-catalytic dye degradation using piezoelectric 6H-SiC under harsh conditions

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The development of novel piezoelectric cata-lysts against harsh conditions is indeed crucial for improving the piezo-catalytic degradation efficiency of colored organic dyes in wastewater.In this work,6H-SiC nanoparticles(NPs)are utilized to piezo-catalytic degrade rhodamine B(RhB)and methylene blue(MB)under ultrasonic vibration for the first time.The degradation efficiency of RhB and MB reaches 98.8％and 98.7％within 80 min.The piezoelectricity of 6H-SiC is compre-hensively analyzed by the piezoresponse force microscope(PFM)and finite element method(FEM).The strong oxi-dizing active free radicals generated by the continuous piezoelectric polarized electric field of 6H-SiC,i.e.,·O2-and·OH,induce the decomposition reactions of colored organic dyes in solution.And the dyes are proven to degrade to harmless or less-harmful products gradually during the piezo-catalysis process by high-performance liquid chromatography tandem mass spectrometry(HPLC-MS).Moreover,RhB is also decomposed efficiently by 6H-SiC NPs under acidic and alkaline conditions.These results prove the feasibility of 6H-SiC for decomposing common water pollutants under harsh conditions and provide a new perspective for water purification.

Piezo-catalytic degradation6H-SiCRhodamine B(RhB)Methylene blue(MB)Harsh conditions

Lin-Lin Zhou、Tao Yang、Kang Wang、Lai-Pan Zhu、En-Hui Wang、Kuo-Chih Chou、Hai-Long Wang、Xin-Mei Hou

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Institute for Carbon Neutrality,University of Science and Technology Beijing,Beijing 100083,China

Institute of Steel Sustainable Technology,Liaoning Academy of Materials,Shenyang 110000,China

Beijing Institute of Nanoenergy and Nanosystems,Chinese Academy of Sciences,Beijing 101400,China

School of Materials Science Engineering,Zhengzhou University,Zhengzhou 450001,China

Beijing Advanced Innovation Center for Materials Genome Engineering Beijing,University of Science and Technology,Beijing 100083,China

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National Science Fund for Distinguished Young ScholarsNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaFundamental Research Funds for the Central UniversitiesState Key Laboratory of Featured Metal Materials and Lifecycle Safety for Composite Structures,Guangxi UniversityInterdisciplinary Research Project for Young Teachers of USTB(Fundamental Research Funds for the Central Universities)

52025041519020205197402152250091FRF-TP-20-02C22021GXYSOF12FRF-IDRY-21-028

2024

10.1007/s12598-024-02717-6

稀有金属(英文版)
中国有色金属学会

稀有金属(英文版)

CSTPCDEI
影响因子：0.801
ISSN：1001-0521
年,卷(期)：2024.43(7)
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