Table 1 Possible products formed by photocatalytic reduction of nitroaromatic compounds and comparison of the conversion and selectivity of different photocatalysts

From: Light-tuned selective photosynthesis of azo- and azoxy-aromatics using graphitic C3N4

Entry

Photocatalysts

Cost (€ g−1)

Radiation

Temperature (°C)

Conversion (%)

Selectivity (%)

      

Azoxy-

Azo-

Aniline

1

SiO2/CdS/Rha

7.7

436 nm, 25 h

RT

80

68

5

5

2

Au/TiO2 b

14.4

>430 nm, 12 h

RT

95

0

99

N/A

3

Cu/Graphenec

92.2

>400 nm, 5 h

90

98

N/A

98

N/A

4

TiO2/N3/Ptd

57.1

530 nm, 24 h

RT

>99

0

0

100

5

Au/TiO2-Age

7.6

>450 nm, 10 h

RT

100

0

0

100

6

Ni2P/CdSf

6.2

>420 nm, 24 h

RT

99

0

0

>99

7

g-C3N4 g

0.1

450 nm, 12 h

RT

97

95

5

0

8

g-C3N4 h

0.1

410 nm, 5 h

RT

95

6

94

0

9

A-g-C3N4 g

0.1

450 nm, 12 h

RT

1

99

0

<1

  1. a High-pressure Hg lamp (0.007 W cm−2)18
  2. b 0.01 M KOH, 300 W Xe lamp (>430 nm, 0.01 W cm−2)19
  3. c 0.01 M KOH, 300 W Xe lamp (400–800 nm, 0.15 W cm−2)16
  4. d N3 dye on TiO2 with Pt, triethanolamine (TEOA) as scavenger, 3 W 530 nm LED26
  5. e 500 W Xe lamp (450–600 nm, 0.083 W cm−2)24
  6. f LED lamp (>420 nm, 30 × 3 W), Na2S and Na2SO3 in water23
  7. g 0.01 M KOH, 450 nm LED (440–460 nm, 0.03 W cm−2)
  8. h 0.01 M KOH, 410 nm LED (400–420 nm, 0.03 W cm−2)