ZnO hollow pitchfork: coupled photo-piezocatalytic mechanism for antibiotic and pesticide elimination

Abstract

Photo-piezocatalytic degradation of organic dye (rhodamine b), pesticide (malathion), and antibiotic (ibuprofen) in an aqueous solution were performed by using a Zinc Oxide (ZnO) hollow pitchfork, which was synthesized by...

NaNbO3/ZnO piezocatalyst for non-destructive tooth cleaning and antibacterial activity

“…Figures 2 B–2E display the high-resolution spectrum for the elements in NaNbO 3 /ZnO. In the Zn 2p range, the bond energies for Zn 2p 3/2 and Zn 2p 1/2 arise at 1022.26 and 1045.38 eV, respectively, which are compatible with the valence of Zn 2+ ( Sharma et al., 2022 ). At the very same moment, the binding energies of 206.55 and 209.32 eV are attributed to Nb 3d 5/2 and Nb 3d 1/2 , which corresponds to the Nb 5+ oxidation state ( Saha et al., 2018 ).…”

“…The Raman spectra of NaNbO 3 /ZnO binary nanocomposite exhibit both ZnO as well as NaNbO 3 . (Sharma et al, 2022). At the very same moment, the binding energies of 206.55 and 209.32 eV are attributed to Nb 3d 5/2 and Nb 3d 1/2 , which corresponds to the Nb 5+ oxidation state (Saha et al, 2018).…”

Borophene: A Piezocatalyst

“…Moreover, the recombination of thus-generated electrons (e -) and holes (h + ) is largely reduced due to the piezoelectric polarization effect. Hence, they can react with water in order to produce free hydroxyl radicals (•OH), which further oxidize the dye molecules as mentioned in equations (1-2) 56,57,9 .…”

“…This was done to ensure that the nanosheets were free of any moisture. For the purpose of investigating the repeatability of borophene nanosheets, this procedure was carried out five times 9,38 .…”

Photo-enhanced piezocatalytic hydrogen evolution using in situ silver piezodeposited scheelite-type BaMoO4 and BaWO4

“…[13][14][15][16] In the literature, many materials such as ZnO, ZnS, BaTiO 3 , lead zirconate titanate (PZT), CdS, GaN, KNbO 3 , NaNbO 3 , and C 3 N 4 have been investigated in various catalytic applications as piezocatalysts. [17][18][19][20][21][22][23][24][25][26] The tetragonal crystal structure of BaTiO 3 is the most studied material for piezocatalysis among them. BaTiO 3 microdendrites were rst reported for the HER piezocatalyst under ultrasonic vibration.…”