Table 1. Photocatalytic H2O2 evolution over Cd3(TMT)2 under different conditions.
Entry | pH | hν | Atmosphere | C(H2O2) [mmol • L−1] |
---|---|---|---|---|
1[a] | 6.7 | + | air | negligible |
2[b] | 6.7 | + | air | 1.5 |
3[b] | 6.7 | − | air | negligible |
4[b] | 6.7 | + | N2 | negligible |
5[c] | 5.8 | + | air | 1.75 |
6[c] | 4.1 | + | air | 2.0 |
7[c] | 2.8 | + | air | 8.75 |
8[d] | 6.7 | + | air | negligible |
[a] Reaction conditions: 80 mg catalyst dispersed in 20 ml distilled water, visible light (λ ≥ 420 nm), room temperature, the reaction time is 4 hours; [b] Reaction conditions: 80 mg catalyst dispersed in 19 ml distilled water mixed with 1 ml methanol, other conditions as [a]; [c] pH of the solution was adjusted by con. HNO3, other conditions as [b]. [d] With the addition of AgNO3 as electron trapper, other conditions as [b]. The concentration of produced H2O2 was determined by KMnO4 titration20.