Phenol c6h5oh

3,4-ethylenedioxythiophene (EDOT), iron (III) chloride, cetyltrimethylammonium bromide (CTAB) (≥98%), sodium chloride, toluene (>99%), pentanol (≥99%), silver perchlorate AgClO₄ (>98%), phenol (C₆H₅OH) and methyl orange were purchased from Sigma-Aldrich. Titania (P25, surface area = 50 m² g^_1, 80% Anatase, 20% Rutile) was obtained from Evonik for comparative photo degradation by polymer nanostructure. N₂ gas (purity > 99.995%) was purchased from Air Liquide. All compounds were used as received. Ultrapure water (Millipore System, 18.2 MΩ cm) and ethanol (≥99% for HPLC, purchased from Sigma-Aldrich) were used as solvents. All experiments were performed at room temperature.

Manganese(II) nitrate tetrahydrate [Mn(NO₃)₂·4H₂O] was obtained from Alfa Aesar. Cerium(III)
nitrate hexahydrate [Ce(NO₃)₃·6H₂O] was obtained from Aldrich. Sodium hydroxide (NaOH) was obtained
from Honeywell. Phenol (C₆H₅OH) was obtained
from Sigma-Aldrich. All the chemicals were used as received.
MnCeO_x catalysts were prepared using
the coprecipitation method, and excess NaOH was added in aqueous solutions
of Mn(NO₃)₂ and Ce(NO₃)₃ (theoretical Mn/Ce atomic ratio = 1.5). The precipitate was centrifuged
to remove excess liquid and washed with water till the pH of water
after wash was no longer changed. The product was calcined in a muffle
furnace at 400 °C (ramp at 5 °C min^–1)
for 6 h.

High-purity reagents and catalysts for liquid chromatography (HPLC-grade) were used for sample preparation. Concentrated hydrochloric acid (HCl, 37%) was purchased from VWR™ International (Paris, France); 25% ammonium hydroxide solution (NH₃ × H₂O); and potassium hydroxide (KOH, purity ≥ 85%) was acquired from Chempur (Piekary Śląskie, Silesia, Poland). Phenol (C₆H₅OH) (purity > 99%) and LC-MS-grade formic acid (HCOOH, puris r.a.) were purchased from Sigma-Aldrich (Darmstadt, Germany). A mixture of 17 amino acids (AAs) in liquid form with concentrations ranging from 1.25 to 2.6 µM mL was purchased from Merck KGaA (Darmstadt, Germany) and used as an external standard for constructing calibration curves. LC-MS-grade acetonitrile (MeCN) was ordered from the same source. Ultra-pure MS-grade isopropyl alcohol (C₃H₈O, purity ≥ 99.95%) was purchased from Biosolve Chimie (Dieuze, France). Ultra-pure water was produced using a reverse osmosis PureLab Flex Elga water purification system (Veolia Water Technologies, Paris, France).