The effect of MnO2concentration on the formation of MnO2/ZnO thin films with bifunctional thermal insulation and photocatalytic self-cleaning performance

Autor: Hamid, Mohd Rashid Yusof, Julkapli, Nurhidayatullaili Muhd, Murshed, Mohamad Fared, Busnak, Mohd Shamsul, Hilmi, Mohd Imran, Adnan, Mohd Azam Mohd
Zdroj: International Journal of Materials and Product Technology; 2022, Vol. 65 Issue: 1 p80-93, 14p
Abstrakt: This study focuses on fabricating manganese dioxide/zinc oxide (MnO2/ZnO) thin films using a two-stage chemical bath deposition (CBD) technique. The concentration effect of MnO2thin film for the second stage deposition will be optimised and selected based on their thermal conductivity behaviour. It was found out that the wettability showed an increase in the contact angle (CA) after the addition of ZnO, with the highest CA of 14.5°C for 12% of ZnO. The same sample also demonstrated commendable thermal performance after reaching a constant temperature of 35.9°C in 65 minutes compared to the uncoated glass substrate. All thin films indicated low photocatalytic activity, where the best sample (12% of ZnO loading) yielded only 6% degradation efficiency of 10 mgL-1malachite green (MG) as a model pollutant within 90 minutes. The porosity and agglomeration gradually increased following second stage deposition and ZnO introduction.
Databáze: Supplemental Index