Applying of Chitosan-TiO2 Nanocomposites for Photocatalytic Degradation of Anthracene and Pyrene

Abstract

In this work, chitosan-TiO2 nanocomposites (NСs CS-TiO2) were developed for the photocatalytic degradation of some representatives of polycyclic aromatic hydrocarbons (PAHs). TiO2 nanoparticles (NPs) were synthesized by laser ablation method and their sizes were determined by dynamic laser light scattering (DLLS). Anthracene and pyrene in micellar solution were used as representatives of PAHs. The effect of TiO2 in the composition of prepared nanocomposites on the photodegradation of PAHs in model environments under UV irradiation was studied. The method of solid-phase luminescence (SPL) was used to estimate the decrease in PAHs concentrations. Based on the results of the studies carried out, pseudo-first order photodegradation kinetics were plotted. The efficiency of using the nanocomposites for the photocatalytic degradation of anthracene and pyrene was proved.

Synthesis of nano-sized lead sulfide thin films from Avocado (Glycosmis cochinchinensis) Leaf extracts to empower pollution remediation

“…These are electro-depositions, Spray pyrolysis, and Photo accelerated biochemical depositions 17 , void evaporations solid–gas depositions 18 . Generally, the provision of thin films had been applied through several procedures such as D-C magnetrons spluttering 19 , pulses electro-deposition techniques 20 , thermal vaporization technique 21 rf magnetrons sputtering 22 , Sprays Pyrolysis technique 23 as well as CBD (chemical bath deposition) techniques 24 . When a chemical bath is equated with the above approaches, it is comparatively simpler, more quick and cheap.…”

Advances in Polymer Nanocomposite Materials for Photocatalytic Degradation of Polynuclear Aromatic Hydrocarbons in Environmental Matrices: A Review

“…The determination of derivatives or fragments obtained after any degradation is normally performed using methods that are also used to determine the concentrations of PAHs, parent phenols and other hydroxylated-or alkylated-PAHs (Morueco, 2018). Like other POPs, emerging contaminants of concerns, PAHs and their derivatives are normally analyzed using a gas chromatography-mass spectrometry (GC-MS) (Munyengabe, 2016;Diao et al, 2019;Rani, & Shanker, 2019c;Patiño-Ruiz et al, 2020), high-performance liquid chromatography (HPLC) (Das, Mukherjee, & Sen, 2008), liquid chromatography-quadrupole time-of-flight mass spectrometry (Ye et al, 2019), HPLC with a fluorescence detector (Vela et al, 2012), GC-MS/tandem mass spectrometry (GC-MS/MS) (Sun et al, 2020), solid-phase luminescence (SPL) (Tatarinov et al, 2021), and liquid chromatography-tandem mass spectrometry (Shang et al, 2019).…”

“…CS has a high ability to chemical modification due to the presence of reactive hydroxyl and amino groups. This allows one to select the different characteristics of polymeric sorbent according to the tasks (Tatarinov et al, 2021). CS is the most studied natural polymer to prepare different nanocomposites.…”

“…It is well-known that when the maximum concentration of a substance of the PAH group in the environmental matrix is exceeded, the risk of developing cancer significantly increases (Kim, Jahan, Kabir, & Brown, 2013). Therefore, a prospective direction of modern research is the development of techniques for the oxidation of PAHs (Tatarinov, Sokolnikova, & Myslitskaya, 2021). PAHs can expose short-and long-term effects on human health depending on the concentration of PAHs during exposure, the route of exposure, for example via ingestion, skin contact, or inhalation, length time of exposure, and the toxicity of the PAHs (ACGIH, 2005).…”

Polymeric Droplets on SiO2 Nanoparticles through Wastewater Treatment of Carbon‐Based Contaminants in Photocatalytic Degradation

“…Nanostructures suggest unmatched occasions to make more operative reagents as well as redox-active means for wastewater decontamination due to their minor size, great surface area, and ease of functionalization [5,6]. Nanoparticles have been originated to be operative in the removal of numerous contaminants from wastewater such as weighty metals, carbonbased and inorganic diluters, dye as well as biological poisons, and pathogens that cause diseases like cholera and typhoid [7,8].…”