Chemometric study of thermal treatment effect on the P25 photoactivity for degradation of tartrazine yellow dye
Source abstract
Abstract
Abstract In the present work, a chemometric study was carried out using a central composite rotatable design (CCRD) to evaluate the effect of thermal treatment on the P25 photoactivity for degradation of tartrazine dye. The factors investigated for thermal treatment were: temperature, heating rate and heating time, and the experimental design response was the photodegradation constant ( k app ). The response surface methodology (RSM) was employed to obtain the material with higher k app value for tartrazine photodegradation, under UV radiation, and investigate the interactions between factors of thermal treatment. The P25 used as precursor, as well as the obtained material from the optimized conditions (TTP op ), and the material with worst photocatalytic activity (TTP-17) were characterized from the N 2 physiosorption, FT-IR, SEM, XRD, DSC/TGA and PAS. The TTP op was obtained under conditions of temperature of 298 °C, heating rate of 10 °C min −1 and heating time of 177 min. TTP op showed k app value of 25.7, while P25 and TTP-17 presented k app values of 20.2 and 10.0, respectively.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Dye analysis and toxicity · Water Quality Monitoring and Analysis · Electrochemical Analysis and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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