Micro‐structural Analysis and Photocatalytic Properties of Green Synthesized t‐ZrO₂ Nanoparticles

Abstract

Tetragonal zirconia (t‐ZrO2) nanoparticles (NPs) were successfully synthesized by a green method using β‐cyclodextrin as stabilizer. The structural characterization of the prepared nanoparticles was done by X‐ray diffraction (XRD).The tetragonal crystalline structure of ZrO2 NPs was confirmed by XRD analysis. We employed the Rietveld method to refine the XRD data and the refinement result leads to specify the tetragonal phase of ZrO2 NPs with space group P 42/n m c. The FTIR spectrum gives the information about the presence of Zr−O bonding at 501 cm−1. Particle size and morphological properties were demonstrated by Scanning Electron Microscope (SEM) and elemental compositions were analysed using EDAX spectrum. The band gap energy was estimated using optical absorption spectroscopy and the value was found to be 3.99 eV. The UV (310 nm) and visible (401, 420 and 560 nm) emissions were observed from PL spectrum. Brunauer‐Emmet‐Teller (BET) surface analysis was used for determining the surface area and average pore size of ZrO2 NPs.The photocatalytic degradation of the prepared ZrO2 NPs for organic dyes had been studied under visible light irradiation. Results showed that 68 % degradation was achieved within 135 min for Methylene Blue (MB) dye but other dyes almost remains unchanged during the same reaction times.

Biomedical Applications of Zirconia-Based Nanomaterials: Challenges and Future Perspectives

“…Zirconium dioxide (ZrO 2 ) is also called zirconia and has a monoclinic crystal structure at room temperature [ 4 ]. ZrO 2 is an n-type semiconductor and has many fascinating properties such as a high dielectric constant, ion-exchange ability, a high refractive index, high optical transparency, low thermal conductivity, a low coefficient of thermal expansion, polymorphic nature, and exceptional chemical and optical properties [ 5 , 6 ]. ZrO 2 is a material of great technological interest, having good natural color, transformation toughness, good chemical stability, and high strength and being an excellent corrosion-, chemical-, and microbial-resistant material [ 7 ].…”

Synthesis of tetragonal SnO2 photocatalyst for Micro‐structural analysis and visible light driven Fenton‐like degradation of Methylene Blue

“…A comparison of SnO 2 nanoparticles synthesized in this study and previously published works is given in Table 1, where different parameters such as methodologies, precursors, crystallite size, surface area, degradation of dyes, % of degradation, degradation time and types of chosen for degradation are compared. Previously we have synthesized tetragonal ZrO 2 nanoparticles by green method which shows 68 % degradation of MB dye at 135 min [26] Aim of this work is to grow a continuous synthesizing protocol for SnO 2 nanoparticles by co-precipitation followed by solid state method…”

Hierarchical electrostatic nanotemplating and self-assembly of electron-transferring hybrid nanostructures: CdS–polymer–porphyrin particles

“…50 This benefit is also valid for the dye degradation where current systems still rely strongly on the UV-light excitation. 51–53 Those systems might also profit from using photosensitizers, which – following the principle introduced herein – can be built in hierarchically after synthesis.…”