International Journal of Photoenergy / 2008 / Article / Tab 4

Research Article

Preparation of by Spray Pyrolysis and Evaluation of Apparent Photocatalytic Activity for Hydrogen Production from Water

Table 4

Quantum yield (QY) obtained by (1) and apparent photocatalytic activity (APA) obtained by (2) of photocatalysts in the present study for water splitting (reactor, Pyrex cylinder; lamp, 15 W UV-C lamp; actinometer, potassium ferrioxalate).

PhotocatalystPrecursor preparation temperature (K)Mean residence time (sec)Reactant volume (L)H2 ( mol/hr) Apparent photocatalytic activity
Spray pyrolysis temperature (K)Sacrificial agent (methanol 20 vol%)Catalyst (g) QY (%)

NiO(0.05 wt%)/ NaTaO33331.800.5462.5123.3
1173X0.56.5

NaTaO33331.800.50.270.07
973X0.53.8 10−3

NaTaO33331.800.51.250.33
1073X0.51.8 10−2

NaTaO33331.800.53.310.88
1173X0.54.6 10−2

NaTaO33331.800.50.810.22
1273X0.51.1 10−2

NaTaO32982.250.3107.5199.1
1173O0.121.5

NaTaO33132.250.3300.0555.6
1173O0.124.2

NaTaO33332.250.3237.5439.8
1173O0.123.3

NaTaO33532.250.32150.03981.5
1173O0.1230.1

NiO(0.2 wt%)/ NaTaO33532.250.31625.06018.5
1173O0.0622.8

NiO(0.2 wt%)/ NaTaO33532.250.33150.05833.3
1173O0.1244.1

NiO(0.2 wt%)/ NaTaO33532.250.33637.54490.7
1173O0.1850.9

NiO(0.2 wt%)/ NaTaO33532.250.33212.52379.6
1173O0.3045.0

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