Photocatalytic degradation of bisphenol A by HMS/g-C<inf>3</inf>N<inf>4</inf> composite
Data(s) |
22/07/2016
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Resumo |
In this work, hexagonal mesoporous silica/g-C3N4 (HMS/C3N4) was synthesized by heating a mixture of self-prepared HMS and dicyandiamide. The as-prepared materials were characterized by transmission electron microscopy (TEM), X-ray diffractometer (XRD), Fourier transform infrared spectra (FT-IR) and Brunauer–Emmett–Teller analysis (BET). The prepared photocatalysts were applied to decompose bisphenol A (BPA) under UV light illumination. The mass ratios of HMS to melamine were optimized. The results showed that optimal mass ratios HMS to dicyandiamide was 1:1. Even though with the same catalyst dosage (1.0 g/L), the degradation kinetic rate constant of BPA over HMS/C3N4 (0.00526 min−1) was 1.76 times and 1.4 times than those on P25 (0.00298 min−1) and pure C3N4 (0.00383 min−1), while the rate constant of photolysis was only 0.00021 min−1. The enhanced photocatalytic activity of the HMS/C3N4 composite was ascribed to higher specific surface area and less aggregation compared to the pure C3N4. It is feasible and efficient to degrade BPA by HMS/C3N4 composite, which is easier to be separated than pure C3N4 after the pollutant has been removed completely. |
Identificador | |
Idioma(s) |
eng |
Publicador |
Taylor & Francis |
Relação |
http://dro.deakin.edu.au/eserv/DU:30085391/luo-photocatalytic-inpress-2016.pdf http://www.dx.doi.org/10.1080/19443994.2016.1204365 |
Direitos |
2016, Taylor & Francis |
Palavras-Chave | #Photocatalysis #g-C3N4 #Mesoporous silica #Bisphenol A |
Tipo |
Journal Article |