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Table 1 Precursor sources, ratios, annealing temperatures, and times for the preparation of BGH and BMH series

From: Boron Carbon Oxynitride as a Novel Metal-Free Photocatalyst

Precursor

Temperature

Time (h)

Mole ratio (B:N:C)

Sample name

1 (boric acid, guanidine hydrochloride, hexamethylenetetramine)

600 °C

12

3:1:0.1

BGH01LT

800 °C

12

3:1:0.1

BGH01

800 °C

12

3:1:0.3

BGH03

2 (boric acid, melamine, hexamethylenetetramine)

600 °C

12

3:1:0.1

BMH01

800 °C

12

3:1:0.1

BMH01HT

600 °C

12

3:1:0.3

BMH03

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