Fast synthesis of NaNbO3 nanoparticles with high photocatalytic activity for degradation of organic dyes

Abstract

NaNbO3 nanoparticles were obtained using the microwave‐assisted hydrothermal method followed by heat treatment. It has been shown that heat treatment to increase the crystallinity of the material and modifies particle shape, from nanowires to nanograins. Nanowires with a diameter of approximately 35 nm and a length of tens of micrometers were obtained in the shortest time ever reported in the literature. Particles in the shape of nanograins with a diameter of approximately 35 nm were obtained by burning the nanowires. The photocatalytic activity of the nanoparticles was investigated through the photodegradation of Rhodamine B dye. Electronic structure analysis using density functional theory (DFT) along with experimental techniques was performed to help understand the photocatalytic activity of each sample. The obtained nanoparticles were highly favorable for photocatalytic applications, especially the nanograins, which degraded 100% of the dye in 50 min.

Synergetic Adsorption‐Catalysis in Potassium Oxide Modified High‐Entropy Relaxor Ferroelectrics for Efficient Dye Removal Strategy

“…[22][23][24] In piezoelectric materials, the internal field induced by mechanical agitation can effectively suppress the recombination of photo-excited electron-hole pairs, directing them toward disparate regions, thereby facilitating dye degradation. Similar phenomena have been unveiled in other piezoelectric materials, such as ferroelectric NaNbO 3 , [25,26] LiNbO 3 , [27] and BaTiO 3 [14,28,29] , exhibiting more tremendous advantages than conventional photocatalysts.…”

In Situ Fabrication of an S-Scheme NaNbO3/Bi2O2CO3 Heterojunction for Enhanced Performance in Photocatalytic Nitrogen Fixation

“…Regrettably, this aspect has been overlooked in the research on Bi 2 O 2 CO 3 photocatalytic materials. NaNbO 3 is a typical perovskite material with a wide bandgap, which has been widely employed in developing efficient photocatalytic materials for hydrogen production, organic degradation, and CO 2 reduction . Very recently, our group demonstrated the utilization of NaNbO 3 materials in photocatalytic NH 3 synthesis, indicating its potential in PNF field.…”

Highly selective CO2 sensing response of lanthanum oxide nanoparticle electrodes at ambient temperature

“…They then migrate to the surface of the nanoparticles where the photogenerated holes react with attached OH or H 2 O to produce hydroxyl radicals and the photogenerated electrons are scavenged by the O 2 dissolved in water to produce superoxide radicals. 44,45 These generated radicals participate in redox reactions with absorbed dye species and are responsible for their photocatalytic degradation. It was reported earlier that the photocatalytic activity mainly depends on the size and shape of the nanomaterials, and also the process of generation, transfer, and consumption of the photogenerated carriers.…”