ZnO Nano-swirlings for Azo Dye AR183 photocatalytic degradation and antimycotic activity

Abstract

The sol-gel technique was used to fabricate ZnO Nano-swirlings (ZNsw) at a predetermined agitation rate (of >> 1900 rpm), with around 21.94 gm of zinc acetate dihydrate and 0.2 g cetyltrimethylammoniumbromide (CTAB) and a cationic surfactant (drop-wise). The impact of the predetermined agitation condition on the molecular size and morphology of ZNsw is examined, and the outcomes are dissected by useful characterization tools and techniques viz. XRD, SEM embedded with EDS, TEM, FT-IR and UV–visible. The SEM and TEM results suggest that the product formed into a big cluster of adequate ZNsw, containing a significant quantity of folded long thread-lengths. Each group indicated a fair amount of the volume of these lengths. The photocatalytic process of ZNsw was carried out as a result of the irradiation time due to the deterioration of Azo Dye AR183, resulting in approximately 79 percent dye discoloration following an 80-min UV light irradiation in the presence of ZNsw. Additionally, the synthesized ZNsw was tested for antagonistic activity, and the growth hindrance of two plant pathogenic fungal strains found. Per cent inhibition in growth of Rhizoctonia solani and Alternaria alternata were observed in response to ZNsw.

Anticancer effect of zinc oxide nanoparticles prepared by varying entry time of ion carriers against A431 skin cancer cells in vitro

“…The peaks in all XRD patterns, specifically [1 0 0], [0 0 2], [1 0 1], [1 0 2], [1 1 0], [1 0 3], [1 1 2] and [2 0 1] show diffraction peaks for ZnO nanostructures. This led to the identification of ZnO as an epitaxial phase with a hexagonal lattice ( Umar et al, 2022 ). According to our previous study, the highest peak of 2θ occurred at 36.3°, which was reported all along the orientation [1 0 1] ( Khan et al, 2016 ).…”

“…To further elucidate the optical/structural properties, UV-Visible absorption spectroscopy was used ( Figure 3 ). Both samples displayed significantly narrow absorption bands in the UV-A region between 364 and 382 nm devoid of any other peaks ( Umar et al, 2022 ), signifying combined light wave and electron vibrations of nanoparticles ( Miri et al, 2019 ). However, from ZRT-1 to ZRT-2, the absorption bands’ intensity enhanced slightly.…”

“…The observed absorption peaks were typical of the wurtzite hexagonal structure ( Davis et al, 2019 ). Additionally, it was discovered that altering the ion-carrier introduction time during the synthesis of ZRTs led to a slight change in the ZRTs’ absorption wavelength maxima (λ max ) ( Umar et al, 2022 ). This red-shift to longer wavelength may be due to the change in the aspect ratios, since the dimensions as well as morphologies of the ZRTs impacts the spectral properties ( Basri et al, 2020 ; Kovács et al, 2022 ).…”

Recent Advances in Efficient Photocatalytic Degradation Approaches for Azo Dyes

“…Sansenya et al [141] prepared ZnO by a hydrothermal method for the complete photodegradation of RR141 and CR dye. ZnO nanoswirlings fabricated by Umar et al [142] observed 79% AR183 dye degradation under UV light within 80 min.…”

Morphology Effects on Electro- and Photo-Catalytic Properties of Zinc Oxide Nanostructures

“…Refs. [ 21 , 35 , 41 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 ] are cited in Supplementary Materials .…”