Citation:
Kai Wei, Kexin Li, Zhenxing Zeng, Yuhua Dai, Liushui Yan, Huiqin Guo, Xubiao Luo. Synergistic photocatalytic effect of porous g-C3N4 in a Cr(VI)/4-chlorophenol composite pollution system[J]. Chinese Journal of Catalysis,
;2017, 38(11): 1804-1811.
doi:
10.1016/S1872-2067(17)62912-7
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The photocatalytic reduction of aqueous Cr(VI) to Cr(Ⅲ) was preliminarily studied using porous g-C3N4 as a photocatalyst under acidic conditions. The observed synergistic photocatalytic effect of porous g-C3N4 on a Cr(VI)/4-chlorophenol (4-CP) composite pollution system was further studied under different pH conditions. Compared with single-component photocatalytic systems for Cr(VI) reduction or 4-CP degradation, the Cr(VI) reduction efficiency and 4-CP degradation efficiency were simultaneously improved in the Cr(VI)/4-CP composite pollution system. The synergistic photo-catalytic effect in the Cr(VI)/4-CP composite pollution system can be attributed to the accelerated redox reaction between dichromate and 4-CP by electron transfer with porous g-C3N4.
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