Optimizations of conditions for Co(qpy)(H2O)2(ClO4)2 and purpurin

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< Highly Efficient and Selective Photocatalytic CO2 Reduction by Iron and Cobalt Quaterpyridine Complexes
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investigation
Molecular process, Photocatalytic CO2 conversion experiments
cat cat conc [µM] PS PS conc [mM] e-D e-D conc [M] H-D H-D conc [M] solvent A solvent B solvent C solv A/B/C additives additives conc [M] feedstock gas feedstock volume intensity pH T [°C] λexc [nm] t [h] TON CO TOF CO Φ CO [%] TON CH4 TOF CH4 Φ CH4 [%] TON H2 TOF H2 Φ H2 [%] TON HCOOH TOF HCOOH Φ HCOOH [%] TON MeOH TOF MeOH Φ MeOH [%] selectivity [%] [CO;CH4;H2;HCOOH;MeOH] Φ all [%] Details include

[Co(qpy)(H2O)2][ClO4]2

0.05

purpurin

2

BIH

0.1


DMF



460 (LED) 11 197 95 1 1 9 4 95.2%; 0%; 0.5%; 4.3%; 0%

100

No

[Co(qpy)(H2O)2][ClO4]2

0.05

purpurin

2

BIH

0.1


DMF



Argon atmosphere 460 (LED) 11 0 0 78 93 6 7 0%; 0%; 92.9%; 7.1%; 0%

100

No

[Co(qpy)(H2O)2][ClO4]2

0

purpurin

2

BIH

0.1


DMF



460 (LED) 11 0 0 0 0 90 100 n/a

100

No

[Co(qpy)(H2O)2][ClO4]2

0.05

purpurin

0

BIH

0.1


DMF



460 (LED) 11 27 88 0 0 4 12 87.1%; 0%; 0%; 12.9%; 0%

100

No

[Co(qpy)(H2O)2][ClO4]2

0.05

purpurin

2



DMF



460 (LED) 11 0 0 0 0 3 100 n/a

100

No

[Co(qpy)(H2O)2][ClO4]2

0.005

purpurin

2

BIH

0.1


DMF



460 (LED) 11 790 90 11 1 78 9 89.9%; 0%; 1.3%; 8.9%; 0%

100

No

[Co(qpy)(H2O)2][ClO4]2

0.005

purpurin

2

BIH

0.1


DMF



Argon atmosphere 460 (LED) 11 0 0 226 58 167 42 0%; 0%; 57.5%; 42.5%; 0%

100

No

[Co(qpy)(H2O)2][ClO4]2

0.005

purpurin

2



DMF



Argon atmosphere 460 (LED) 11 0 0 0 0 26 100 n/a

100

No

Co(ClO4)2

0.05

purpurin

2

BIH

0.1


DMF



460 (LED) 11 0 0 0 0 3 100 n/a

100

No