Synthesis of novel flower-like Bi4Ti3O12/BiOCl heterojunctions with excellent piezoelectric photocatalytic performance

Advancements in Bio-inspired Self-Powered Wireless Sensors: Materials, Mechanisms, and Biomedical Applications

“…103 Liu and co-workers synthesized a flower-like Bi 4 Ti 3 O 12 /bismuth oxychloride (BiOCl) composite as an excellent piezoelectric material. 104 In other research, Lee et al proposed multiwalled carbon nanotubes (MWCNTs) as a stress-reinforcing agent to increase the efficiency of energy harvesting by PZT piezoelectric material. 105 Habib and co-workers also reported BiFeO 3 −BaTiO 3 as a lead-free ceramic composite with high piezoelectric strain efficiency.…”

“…For example, the addition of BaTiO 3 crystals to poly­(vinylidene fluoride–trifluoroethylene) (P­(VDF-TrFE)) films enhance the performance of flexible wearable piezoelectric sensors . Liu and co-workers synthesized a flower-like Bi 4 Ti 3 O 12 /bismuth oxychloride (BiOCl) composite as an excellent piezoelectric material . In other research, Lee et al proposed multiwalled carbon nanotubes (MWCNTs) as a stress-reinforcing agent to increase the efficiency of energy harvesting by PZT piezoelectric material .…”

Photocatalysis Meets Piezoelectricity in a Type-I Oxygen Vacancy-Rich BaTiO3/BiOBr Heterojunction: Mechanism Insights from Characterizations to DFT Calculations

“…32 For example, a polarized Bi 4 Ti 3 O 12 /BiOCl heterojunction exhibited 1.74-and 8.19-times higher degradation rates under piezo-photocatalysis than those under photocatalysis and piezoelectric catalysis, respectively. 33 Besides, the photocatalysis coupled with piezoelectricity could largely promote the generation of ROS-like hydroxyl radicals (•OH) and superoxide radicals (• O 2− ) by molecular oxygen activation. 34,35 Therefore, integrating the piezoelectric material into a heterostructured photocatalyst is a strategy of killing two birds with one stone: the heterojunction is architected, while the photocatalysis and piezoelectricity are coupled.…”

Review of Bi-based catalysts in piezocatalytic, photocatalytic and piezo-photocatalytic degradation of organic pollutants

“…It is worth noting that under the combined action of mechanical vibration and light irradiation, the recombination of electrons and holes in piezoelectric materials with photocatalytic activity can be significantly inhibited by the built-in electric field, thus improving the photocatalytic activity. 21–23 Compared with the previous strategy, which can only provide limited functions, piezocatalysis does not need extra voltage and only uses low-frequency mechanical energy to generate piezoelectric potential. 24–26 Therefore, the synergistic coupling effect of piezo-photocatalysis came into being.…”

“…27,28 Among them, Bi-based catalysts show unique layered structures composed of [Bi 2 O 2 ] 2+ layers and interlayer ions or groups, which are present in abundant reserves and low in toxicity. 22,29,30 Some Bi-based catalysts have asymmetric crystal structures and exhibit piezoelectric activity under mechanical vibration due to the lone pair electrons of Bi 3+ . 31,32 Therefore, as lead-free piezoelectric materials with excellent photocatalytic performance, Bi-based materials are more suitable for the degradation of organic pollutants in a water environment.…”