RESUMEN
In this study, we are reporting for the first time the utilization of Solanum tuberosum tuber-driven, starch-mediated, green-hydrothermally synthesized cerium oxide nanoparticles (G-CeO2 NPs) for the antibacterial activity and photodegradation of cationic (methylene blue, MB) and anionic (methyl orange, MO) dyes separately and in combination, aimed at environmental remediation. The XRD analysis confirms the fluorite structure of G-CeO2 NPs, displaying an average crystallite size of 9.6 nm. Further, XPS confirms the existence of 24% of Ce3+ oxidation states within G-CeO2 NPs. Morphological studies through FE-SEM and TEM reveal that starch-driven OH- ion production leads to a high percentage of active crystal facets, favoring the formation of Ce3+-rich CeO2 NPs. Photocatalytic experiments conducted under UV-A illumination demonstrate the superior degradation performance of G-CeO2 NPs, with MB degradation reaching 93.4% and MO degradation at 77.2% within 90 min. This outstanding catalytic activity is attributed to the mesoporous structure (pore diameter of 5.63 nm) with a narrow band gap, a large surface area (103.38 m2g-1), and reduced charge recombination, as validated by BET, UV-visible, and electrochemical investigations. The identification of photogenerated intermediates is achieved through LCMS, while the mineralization is monitored via total organic carbon analysis. Moreover, the scavenging experiments point towards the involvement of reactive oxygen species in organic oxidation, demonstrating efficiency over five consecutive trials. Additionally, G-CeO2 NPs exhibit potent antibacterial activity against both gram-positive and gram-negative bacteria. This study presents an innovative, and efficient approach to environmental remediation, shedding light on the potential of G-CeO2 NPs in addressing environmental pollution challenges.
Asunto(s)
Cerio , Nanopartículas , Solanum tuberosum , Antibacterianos/química , Bacterias Gramnegativas , Bacterias Grampositivas , Nanopartículas/química , Cerio/farmacología , Cerio/químicaRESUMEN
Fanconi anemia is an extremely rare genetic disease characterized by chromosomal instability that induces congenital alterations in individuals. It causes defective hemopoiesis ultimately leading to bone marrow failure. Patients are susceptible to recurrent infections and increased risk of hemorrhage, as well as delayed and poor wound healing. Herein, we report a case of Fanconi anemia in which various classical signs of the disease were present. The patient has been on regular follow-up since three and a half years for management of dental problems. The different aspects of this rare disorder are discussed with emphasis on oral manifestations and their influence on the general health of affected patients. Due to an increased susceptibility to developing cancers in this specific population, it is imperative for pediatric dentists to know about the common oral manifestations and potentially cancerous lesions, in order to make an early diagnosis and provide comprehensive care and maintenance of oral health in affected individuals.