Concurrent Removal of Heavy Metal Ions from Water and Hydrogen Production using TiO2 nanotubes
  • Home
  • Introduction
    • Context and Purpose
    • Methodology and Justifications
  • Literature Review
    • Article 1
    • Article 2
  • Methodology
    • Synthesizing and Characterizing
    • Removal of Cu2+
    • Hydrogen Production from Water Splitting
  • Results
    • Removal Efficiency of TiO2 Nanotubes
    • Hydrogen Gas Generation
  • Discussion
    • Cu2+ Concentration on Cu2+ Deposition on TiO2 nanotubes
    • Initial Cu2+ Concentration on Hydrogen Gas Generation
  • Conclusion
    • Summary
    • Future Extensions
  • Acknowledgements
  • References
  • Appendix
  • Reflections
  • FAQ

Hydrogen Gas Generation

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Table 3 Summary of Results from Water Displacement Gas Trap
Figure 8 and Table 3 both show the total hydrogen production by all 4 samples and show the trend of hydrogen production throughout the entire test duration of 60 min. Sample 4, which had 100 ppm of Cu2+, displaced the most amount of water, 194.7 cm3 in 60 min, thus implying that it produced 194.7 cm3 of hydrogen gas as confirmed by the GC-TCD (Gas chromatography-thermal conductivity detector) test conducted afterwards. This was followed by sample 3, containing 10 ppm of Cu2+, with a total production of 157.3 cm3 of hydrogen gas; sample 2, containing 1 ppm of Cu2+, with a total production of 63.0 cm3; lastly, the control containing 0 ppm of Cu2+, with a total production of 6.8 cm3.
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Table 4 Calculations exemplifying the Average Efficiency of Hydrogen Production per unit time
To analyze further, our group has used our results to calculate the average production efficiency of the 4 samples. The results further exemplify that sample 4 with 100ppm of Cu2+ was best able to produce hydrogen, with an efficiency of 0.0541 cm3/s, followed by sample 3 (0.0437 cm3/s), sample 2 (0.0175 cm3/s) and the control (0.0019 cm3/s).
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