Accepted author manuscript, 1.98 MB, PDF document
Available under license: CC BY: Creative Commons Attribution 4.0 International License
Final published version, 5.14 MB, PDF document
Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
| Article number | 110214 |
|---|---|
| <mark>Journal publication date</mark> | 31/10/2023 |
| <mark>Journal</mark> | Diamond and Related Materials |
| Volume | 138 |
| Publication Status | Published |
| Early online date | 4/08/23 |
| <mark>Original language</mark> | English |
In this work, Fe 3O 4/FeS 2/g-C 3N 4 nanocomposites were developed for catalytic hydrogen generation from sodium borohydride. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and environmental scanning electron microscopy (ESEM) were used to analyze these nanocomposites. The XRD diffraction peaks of Fe 3O 4 and FeS 2 cubic phase showed an average crystal size of calculation of 15 and 20 nm. ESEM micrographs showed a 2D broken up sheet structure having more edge sites. The BET surface areas for S@g-C 3N 4, 1.0, 2.0, and 3.0 wt% Fe 3O 4/FeS 2 were 40, 109, 137 and 162 m 2/g, respectively. Even though Fe 3O 4/FeS 2 were incorporated into the nanosheet, the pore size was increased from 2.0 to 2.15 nm. S@g-C 3N 4 has an average band gap of 2.60 eV that decreased to 2.30, 2.21 and 2.18 eV at 1.0, 2.0 and 3.0 wt% of FeS 2. In addition, Fe 3O 4/FeS 2/g-C 3N 4 nanosheets showed an emission band at 460 nm. Moreover, the intensity of this band decreased as the content of Fe 3O 4/FeS 2 reached 3.0 wt%. The rate of hydrogen production is accelerated as the percentage of Fe 3O 4/FeS 2 increased from 1.0 to 3.0 wt%. The sample 3.0 wt% Fe 3O 4/FeS 2 showed the best rate of hydrogen production (8480 mL/g·min).