One-step synthesis of a sulfur–graphene composite with enhanced photocatalytic performance

CTAB-assisted synthesis of S@rGO composite with enhanced photocatalytic activity and photostability

“…As a result, wrapping ␣-S with rGO not only extends visible light response range, but also increases the light absorption intensity in the visible light region. Such an analogous phenomenon has been reported in our previous work, which could be attributed to the intimate interfacial interaction between ␣-S and rGO [15]. These results indicate that a more efficient utilization of the solar spectrum could be achieved and all of S@rGO composites showed improvement in the photodegradation of MB over ␣-S, as demonstrated in Fig.…”

“…Therefore, the enhancement of photocatalytic performance of ␣-S was found through modification of ␣-S with rGO (reduced graphene oxide), which could be ascribed to the efficient charge transport of graphene sheets and hence reduced recombination rate of excited carriers, the selective adsorption of http://dx.doi.org/10.1016/j.apsusc.2015.02.031 0169-4332/© 2015 Elsevier B.V. All rights reserved. the aromatic dye on the graphene, and the increase in hydrophilicity [14,15]. Up to date, however, in the previous reported work, rGO was often used as a support and sulfur particles were loaded on the surface of rGO (named as SG composites).…”

“…On the one hand, this rGO-supported structure suffers from the point contact and always need large amount of rGO to increase the photocatalytic activity of sulfur [14,15]. On the other hand, ␣-S particles loaded on rGO sheets are prone to oxidation by photogenerated hydroxyl radical and thus exhibit poor photostability [15]. Therefore, more stable ␣-S photocatalyst should be developed in order to explore its potential application.…”

“…This structured SG composites have two obvious drawbacks, which hinder the practical application in environmental remediation. On the one hand, this rGO-supported structure suffers from the point contact and always need large amount of rGO to increase the photocatalytic activity of sulfur [14,15]. On the other hand, ␣-S particles loaded on rGO sheets are prone to oxidation by photogenerated hydroxyl radical and thus exhibit poor photostability [15].…”

Preparation of a Photoactive 3D Polymer Pillared with Metalloporphyrin

“…The photogenerated electrons and holes migrate to the surface of the photocatalysts and then can be trapped generally by the oxygen and surface hydroxyls to produce radical species which react with the adsorbed reactants [21]. It is well known that the photodegradation efficiency is strongly related to the electron-hole pairs produced by light irradiation on photocatalysts [22].…”