| Autor: |
Mughal, Sheeza, Sehole, Hafiz Ali Haider, Mumtaz, Asad, Niazi, Muhammad Bilal Khan, Adnan, Fazal, Zhao, Hongbo, Janjua, Hussnain A. |
| Zdroj: |
Biomass Conversion and Biorefinery; February 2024, Vol. 14 Issue: 3 p3927-3945, 19p |
| Abstrakt: |
In sensing applications, the preferential adsorption of molecules on selective Co3O4facets has been explored, yielding high sensitivity and selectivity. This tendency of the molecules can be exploited to enhance methane decomposition efficiency in transition metal catalysts other than nickel, which is known to cause acute toxicity. This study fabricated Co3O4catalysts with and without algal-resourced biogenic agents to calculate the preferential orientations or facets of the catalyst crystals. Henceforth, it evaluated their cytotoxicity and methane decomposition efficiency in a low-pressure chemical vapor deposition reactor from 750 to 850 °C using 0.04% (w/w) Co3O4/Al2O3-Si of nanocatalyst loaded on an Al2O3-coated p-type silicon support at different reaction conditions. Alg-Co3O4(311) nanocatalysts (0.158 eV/Å2), derived from algal biomass containing catalytically active stepped sites and catering efficient chemisorption of carbon atoms, executed 43.4% methane decomposition as opposed to 34% by NaBH4-co-precipitated Ch-Co3O4(111) nanocatalysts (0.132 eV/Å2). The Alg-Co3O4(311) catalysts were nanometric in size; possessed higher ductility, per particle surface area; and were less cytotoxic for erythrocytes, leukocytes and U87 cells than the Ch-Co3O4(111) nanocatalysts. This state of the art provides a new platform to resource algal metabolites for tailoring catalytic efficiency at the nanoscale. |
| Databáze: |
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