Steel wool – HCl 30mins – redox @ 800C

2. Steel wool – HCl 30mins – redox @ 800C

3. Sample #21

4. Sample #19

5. Sample #19 Repeat #17. But when growing CNT (30 min growth time). H2o/h2 was left on because h2o is a weak oxidizer that keeps the catalysts activated. 0.100 g steel wool HCl - 30 mins --> clean and dry--> Purge in Ar. Oxidation with air @ 800C - 60 mins Reduction with H2 @ 800C - 60 mins C2h2 - 10 mins @ 700C Growth - 30 mins @ 700C + 5 mm water + Ar

6. Samplel #24

8. 0.100 g steel wool HCl - 30 mins --> clean and dry--> Purge in Ar. Oxidation with air @ 800C - 60 mins Reduction with H2 @ 800C - 60 mins C2h2 - 10 mins @ 700C Growth - 30 mins @ 700C

9. After rubbing on paper Sample #17 Follow the exact same procedure as #16, but to add a little amount of water using H2 bubbling in the growth rxn 0.100 g steel wool HCl - 30 mins --> clean and dry--> Purge in Ar. Oxidation with air @ 800C - 60 mins Reduction with H2 @ 800C - 60 mins C2h2 - 10 mins @ 700C Growth - 30 mins @ 700C