Detection of 4-nitrophenol in wastewater using microstructures of various morphologies


Hasanoğlu Özkan E.

JOURNAL OF MOLECULAR STRUCTURE, cilt.1274, sa.2, ss.1-9, 2023 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 1274 Sayı: 2
  • Basım Tarihi: 2023
  • Doi Numarası: 10.1016/j.molstruc.2022.134564
  • Dergi Adı: JOURNAL OF MOLECULAR STRUCTURE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chemical Abstracts Core, INSPEC
  • Sayfa Sayıları: ss.1-9
  • Anahtar Kelimeler: Microflake, Microsheets morphology, p-nitrophenol, Catalytic activity, Hydrothermal synthesis
  • Gazi Üniversitesi Adresli: Evet

Özet

In the present study, zinc-oxides with three different morphologies were synthesized by the hydrothermal method. The products synthesized were examined adopting the EDX under the SEM, XRD, FT-IR and BET. The BET analysis results showed that the surface area of the ZnO-2 microparticles was substantially higher compared to the previously published[1,2]. These characterized zinc-oxides were evaluated for their catalytic role in the reduction of 4-NP to 4-AP, which is released into nature with wastewaters as a result of industrial production and poses a threat to the environment and living organisms. A change was also observed in the reduction efficiency of 4-NP to 4-AP by changing the morphology and surface area of the zinc-oxide microparticles. According to the BET analysis result, the rate constant for the reduction reaction of 4-NP was found to be 4.5 × 10−3s−1 in the presence of the ZnO-2 catalyst in the microsheet-structure with the largest surface area, while the recycling was found to be 97.49%. ZnO-2 exhibits excellent catalytic performance, better than the others. As a result, it was revealed that the increase in the surface area of the ZnO microparticles had a positive effect on the catalytic performance. The present study is a guiding study for wastewater treatment applications.