How to Obtain Maximum Environmental Applicability from Natural Silicates

نویسندگان

چکیده

Unmodified natural silicates (bentonite, kaolin, clinoptilolite and diatomites) were tested as adsorbents for the organic pollutants in water tables using Methylene Blue (MB) model adsorbate. Among selected materials, bentonite adsorbed much 237 mg/g, confirming its excellent suitability pollutant removal. Spectral evidence confirmed successful MB immobilization at surface. Furthermore, thermal treatment of MB-saturated adsorbent an inert atmosphere 700 °C produced a carbon/silicate composite. EDX formation nitrogen-doped carbon overlay on silica scaffold obtained composite material was probed electrode oxygen reduction alkaline solution. Reduction proceeded via two-electron mechanism with main product being HO2?, known nucleophile, which subsequently used to degrade/demethylate MB. The showed considerable 70% removal rate after hour electrochemical treatment. synergy between processes adsorption surface-generated HO2? dictates efficiency method points possible route spent reuse form durable environmental protection.

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ژورنال

عنوان ژورنال: Catalysts

سال: 2022

ISSN: ['2073-4344']

DOI: https://doi.org/10.3390/catal12050519