Abstract
A series of nanoporous carbons (NPC) Fe-C/N-900 and C/N-900 have been synthesized from one-step carbonization of 5,10,15,20-tetrakis(4-carboxyphenyl)porphyrin-Fe (Fe-TCPP) and TCPP, respectively and employed as photocatalyst for the degradation of organic dye methyl violet (MV) under UV irradiation. The optimized Fe-C/N-900 (carbonized at 900 oC for 2 h) exhibited an optimal performance in MV degradation. The photodegradation capacity of Fe-C/N-900 has been observed to be higher than that of C/N-900. The photodegradation ability of Fe-C/N-900 as a function of initial MV concentration, catalysis dosage, and pH has been also investigated. The Fe-C/N-900 material showed no apparent loss in MV degradation after four cycles. These features reveal that Fe-C/N-900 may be a promising degradant for dyes removal from water.
 
 KEY WORDS: Photocatalysis, Nanoporous carbons, Methyl violet, carbonization
 
 Bull. Chem. Soc. Ethiop. 2020, 34(2), 277-284
 DOI: https://dx.doi.org/10.4314/bcse.v34i2.6
Highlights
The wastewater bodies comprising of organic dyes are nowadays the most frequently detected environmental pollutants due to exponential rise in the consumption of these dyes because of the continuous growth in population [1,2,3]
The N2 sorption isotherms of the sample obtained from carbonizing Fe-tetrakis (4-carboxyphenyl)porphyrin (TCPP) precursors is of type IV (Figure 2), which is indicative of the coexistence of micropore and mesopore
Photocatalytic degradation of methylene blue (MB), methyl violet (MV) and rhodamine B (Rh B) by Fe-C/N-900 were conducted to investigate the efficiency of photocatalyst
Summary
The wastewater bodies comprising of organic dyes are nowadays the most frequently detected environmental pollutants due to exponential rise in the consumption of these dyes because of the continuous growth in population [1,2,3]. These newly synthesized materials have been assessed towards the visible-light degradation of aromatic dyes. The results of their comparative photocatalytic performances are presented.
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