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Synthesis of Bi4Ti3O12 decussated nanoplates with enhanced piezocatalytic activity


A variety of nanostructured Bi4Ti3O12 materials with diverse morphologies were synthesized by a novel hydrothermal method using layered titanate Na2Ti3O7 as synthetic precursor. Among these materials, the decussated nanoplates exhibit superior piezocatalytic activity compared with other piezocatalysts of the perovskite family. The enhanced piezocatalytic activity is attributed to the large piezoelectric potential difference and the shorten distance between polar surfaces, which may help to enhance driving force of charge transport. The finite element method (FEM) simulation of piezoelectric response in different Bi4Ti3O12 nanostructures was performed to illustrate the influence of morphologic features on the piezocatalytic performance. The catalytic mechanism of Bi4Ti3O12 was investigated by detection and characterization of free radicals and intermediate products with electron spin resonance (ESR) spin-trapping technology and liquid chromatography-mass spectrometry (LC-MS). This work may push forward the development of piezocatalytic materials, and provide insights into piezocatalysis for environmental applications.

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Publication details

The article was received on 01 Sep 2019, accepted on 05 Oct 2019 and first published on 07 Oct 2019

Article type: Paper
DOI: 10.1039/C9NR07544E
Nanoscale, 2019, Accepted Manuscript

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    Synthesis of Bi4Ti3O12 decussated nanoplates with enhanced piezocatalytic activity

    J. Wu, N. Qin, E. Lin, B. Yuan, Z. Kang and D. Bao, Nanoscale, 2019, Accepted Manuscript , DOI: 10.1039/C9NR07544E

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