Table 2.

Comparison of H₂ evolution rate of Bi₄Ti₃O_12−x (350 °C, 60 min) and other Bi₄Ti₃O₁₂ photocatalysts recently reported.

Sample	Light Source	Reactant Solution	H2 Evolution Rate/μmol·g−1·h−1	Reference
Bi4Ti3O12−x (350 °C, 60 min)	300 W Xe Lamp (λ > 400 nm)	200 mL water + 20 mL methanol	129	This work
Bi4Ti3O12	350 W high pressure Xe lamp (λ > 400 nm)	400 mL water + 20 mL methanol	36	[37]
Bi4Ti2.6Cr0.4O12	350 W high pressure Xe lamp (λ > 400 nm)	400 mL water + 20 mL methanol	58.1	[37]
Bi4Ti3O12	300 W Xe Lamp (λ > 400 nm)	400 mL water + 20 mL methanol	42	[38]
Bi4Ti2.6Cr0.4O12	300 W Xe Lamp (λ > 400 nm)	400 mL water + 20 mL methanol	98	[38]
Bi4Ti2.6Cr0.4O12	300 W Xe Lamp (λ > 420 nm)	400 mL water + 30 mL methanol	117	[39]