Sample name

Treatment temperature (K)

BET surface area (m²/g)

Total pore volume (cm³/g)

Conclusion

S₁ (pH 3)

473

119

0.10

Micro porous (43%)

S₂ (pH 5)

473

35

0.09

Micro porous (32%) Mesoporous (50%)

S₃ (pH 8)

473

56

0.42

Mesoporous (80%)

S₄ (pH 10)

473

67

0.68

Mesoporous (70%) Macro porous (30%)

S₅ (pH 12)

473

18

0.13

Macro porous (70%)