Dataset and figures for "Enhancing the Photo-corrosion Resistance of ZnO Nanowire Photocatalysts"

Taylor, Christina; Canon, Anyela M. Ramirez; Wenk, Jannis; Mattia, Davide

doi:10.15125/bath-00675

Cited by 2 publications

(1 citation statement)

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“…In alkaline solutions, however, this oxide can form Zn oxyanions, such as zincates. [18] Furthermore, ZnO maintained in suspension is generally unstable in illuminated aqueous solutions since photocorrosion generally occurs when illuminated by ultraviolet (UV) radiation, resulting in a decrease in photocatalytic activity. The ZnO dissolution tendency occurs in both strongly acidic and alkaline media [11].…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic degradation of salicylic acid employing TIO2 and ZNO in aqueous suspension / Degradação fotocatalítica do ácido salicílico empregando TIO2 e ZNO em suspensão aquosa

Reis¹,

Santos²,

Oliveira³

et al. 2022

Braz. J. Develop.

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The photocatalytic degradation of salicylic acid (SA) in reduced concentration (14.5 µmol L-1) was investigated using TiO2 and ZnO as photocatalysts under irradiation with UV light using UV-Vis spectrophotometry and HPLC analysis. The effect of different catalysts and catalyst loading, kinetic analysis, and dissolution of ZnO using the experimental conditions adopted were evaluated in acidic medium (pH = 3.0). Chronic ecotoxicity tests of the effluent from the reactions were conducted employing a concentration of 1 g L-1 of photocatalysts. The results showed that TiO2 and ZnO presented very similar performance for the SA degradation, whose profile followed first-order kinetics. The dissolution of ZnO observed was low using the experimental conditions adopted. Chronic ecotoxicity tests carried out showed that the use of ZnO/UV system for degradation of SA leads to a product with significant harmful effects on Ceriodaphnia dubia, even at reduced concentrations of the effluent from the reaction.

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Section: Introductionmentioning

confidence: 99%