TY - JOUR Y1 - 2023/// UR - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85170434815&doi=10.1016%2fj.matchemphys.2023.128401&partnerID=40&md5=7c227b6d20e49678243648bd8cafd212 A1 - Nawaz, R. A1 - Haider, S. A1 - Anjum, M. A1 - Haneef, T. A1 - Oad, V.K. A1 - Aqif, M. A1 - Haider, A. A1 - Khan, R. JF - Materials Chemistry and Physics VL - 309 AV - none N1 - cited By 3 N2 - Black TiO2 materials were synthesized with different morphologies, including nanoparticles (NPs) and nanonails (NNs), and their performance for the photodegradation of hazardous phenols from model palm oil mill wastewater (TPOME) was compared. For the first time, the black TiO2 NNs were prepared by hydrothermal processing, followed by HCl treatment of the TiO2 NPs that had already been produced using an improved glycerol-assisted precipitation method. Four phenolic compounds (phenol, caffeic acid, ferulic acid, and gallic acid) were combined to represent the model wastewater based on their relative concentrations in actual TPOME. The TiO2 NNs outperformed the TiO2 NPs in the photocatalytic degradation of phenols due to their improved properties, including higher visible light absorption and surface area and lower bandgap and rate of electrons and holes recombination. The removal rate and energy requirements of the TiO2 NNs were also impactful. The TiO2 NNs degraded more than 99 of individual phenols in 210 min and 84.22 of the total phenols in 270 min with the least amount of electrical energy used (96.36 kW/m3), the lowest cost of treatment of a unit volume of model TPOME, and the highest removal rate constant. © 2023 Elsevier B.V. KW - Biodegradation; Chlorine compounds; Degradation; Hazards; Light absorption; Morphology; Palm oil; Phenols; Photocatalytic activity; Precipitation (chemical); Rate constants; Synthesis (chemical); TiO2 nanoparticles KW - Balck TiO2 nanoparticle; Black TiO2 nanonail; Electrical energy; Electrical energy requirement; Energy requirements; Hazardous phenol; Hazardous pollutants; Nanonails; Photocatalytic degradation; Treatment costs KW - Titanium dioxide ID - scholars18095 TI - Photodegrading hazardous pollutants using black TiO2 materials with different morphology and estimation of energy requirement ER -