Synthesis and antibacterial activity of transition metal (Ni/Mn) co-doped TiO2 nanophotocatalyst on different pathogens under visible light irradiation

Miditana, Sankara Rao; Tirukkovalluri, S.R.; Raju, I.M.

doi:10.17586/2220-8054-2022-13-1-104-114

Cited by 3 publications

(2 citation statements)

References 22 publications

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“…7 . However, MnTiO 2 -NPs showed better antibacterial activity compared to pure TiO 2 -NPs [ 35 ]. The ZOI values of MnTiO 2 -NPs were higher than those of pure TiO 2 for both S. aureus and E. coli at all tested doses.…”

Section: Resultsmentioning

confidence: 99%

Defects oriented hydrothermal synthesis of TiO2 and MnTiO2 nanoparticles as photocatalysts for wastewater treatment and antibacterial applications

Awan,

Khalid,

Ahmad

et al. 2024

Heliyon

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Section: Resultsmentioning

confidence: 99%

Defects oriented hydrothermal synthesis of TiO2 and MnTiO2 nanoparticles as photocatalysts for wastewater treatment and antibacterial applications

Awan,

Khalid,

Ahmad

et al. 2024

Heliyon

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“…The formation of crystalline structures with well-defined peaks can be interfered with by adjusting reaction parameters such as precursor type, solvent, reaction time, and temperature of calcination. TiO 2 was calcined at temperatures of 400 • C or below and showed improvement in photocatalytic activities [56][57][58][59][60][61][62].…”

Section: Zno-clay Mineralsmentioning

confidence: 99%

TiO2/Arabic Gum for Degradation of Pollutants in Water

Lopes,

Araújo,

Damasceno

et al. 2023

Sustainability

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Emerging contaminants and pollution are environmental problems threatening public health. Antibiotic ciprofloxacin and methylene blue dye are pollutants frequently detected in water systems worldwide. Photocatalysis is a process for water treatment. TiO2-based catalysts synthesized with natural gums show improved photocatalytic properties. Here, the sol–gel method synthesized TiO2/Arabic gum for photocatalytic performance. The innovation of this work was synthesized at 400 °C and investigated their photocatalytic proprieties using methylene blue and ciprofloxacin as model pollutants. XRD showed that the photocatalyst was in the anatase phase. The result showed that TiO2 with a band gap of 3.29 eV was achieved at a calcination temperature of 400 °C. Corresponding FTIR results suggest only the existence of functional groups related to TiO2. The SEM and BET method characterization indicated that TiO2/Arabic gum were spherical-shaped nanoparticles arranged in clusters with a mesoporous structure, contributing to photocatalytic performance. In addition, photocatalytic studies showed that the methylene blue dye and ciprofloxacin antibiotic degradation rates reached 99% and 94% under UV light, respectively. The hole (h+) and OH ⦁ radicals are essential in photodegradation. The synthesized material showed excellent photostability and maintained almost the same degradation percentage in the three consecutive cycles tested on the different pollutants. The TiO2/Arabic gum is an excellent candidate for future use in treating contaminants in aqueous media using photocatalysis. Therefore, TiO2/Arabic gum nanoparticles are a promising material for wastewater treatment.

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Green Synthesis of Gold Nanoparticles using Carambola Fruit Extract and Evaluation of their Antioxidant and Anticancer Efficiency

Babu

Anagani

Sravanthi³

2023

Asian J. Chem.

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In this study, a successful synthesis of gold nanoparticles (AuNPs) using extract from the Carambola fruit was carried out. Remarkably fast reduction of Au3+ ions was observed when aqueous chloroauric acid was treated with star fruit powder at 60 ºC and this was obtained without the use of any stabilizing or reducing agents. The UV-visible, FT-IR, DLS, XRD, SEM and TEM were used to study the synthesized AuNPs. The FT-IR studies suggested that the phenolic group may have contributed to the reduction of Au3+. The DLS particle size analysis and TEM measurements revealed that AuNPs had a mean particle size of 10 nm and were nearly spherical in form. The crystalline character of AuNPs was established by TEM-SAED image and XRD analyses. Zeta potential measurements were used to analyze the stability of AuNPs. The synthesized AuNPs effectively scavenge free radicals such as DPPH, NO• and H2O2 with % inhibition values of 57.12, 58.75 and 60.23, respectively. The MTT assay of the anticancer activity demonstrated that the synthesized AuNPs worked effectively against MCF7 cell lines and are comparable to those of standard cancer drugs.

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Synthesis and antibacterial activity of transition metal (Ni/Mn) co-doped TiO2 nanophotocatalyst on different pathogens under visible light irradiation

Cited by 3 publications

References 22 publications

Defects oriented hydrothermal synthesis of TiO2 and MnTiO2 nanoparticles as photocatalysts for wastewater treatment and antibacterial applications

Defects oriented hydrothermal synthesis of TiO2 and MnTiO2 nanoparticles as photocatalysts for wastewater treatment and antibacterial applications

TiO2/Arabic Gum for Degradation of Pollutants in Water

Green Synthesis of Gold Nanoparticles using Carambola Fruit Extract and Evaluation of their Antioxidant and Anticancer Efficiency

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