Dai Kai, Lu Luhua, Liu Qi, Zhu Guangping, Wei Xiaoqin, Bai Jin, Xuan Lingling, Wang Heng
College of Physics and Electronic Information, Huaibei Normal University, Huaibei, 235000, P.R. China.
Dalton Trans. 2014 May 7;43(17):6295-9. doi: 10.1039/c3dt53106f.
Graphitic C3N4 (g-C3N4), as an advanced metal free photocatalyst, is known to be poorly exfoliated and dispersed in water from its powder form which has a layered structure, the intrinsic plane structure is not destroyed, and this has largely limited its application. In this work, we report our progress on successful sonication exfoliation of g-C3N4 nanosheets in graphene oxide (GO) aqueous solution. By making use of the substrate character of GO, g-C3N4 nanosheets of unvaried intrinsic structure were exfoliated and anchored on the GO surface, resulting in a GO/g-C3N4 hybrid. Moreover, the photocurrent of the hybrid was largely reinforced at the optimal weight fraction of GO. As a result, the corresponding photocatalytic performance of the hybrid with optimized photocurrent character was largely improved.
石墨相氮化碳（g-C3N4）作为一种先进的无金属光催化剂，由于其粉末形式具有层状结构，在水中难以剥离和分散，其固有平面结构未被破坏，这在很大程度上限制了它的应用。在这项工作中，我们报告了在氧化石墨烯（GO）水溶液中成功超声剥离g-C3N4纳米片的进展。通过利用GO的底物特性，未改变固有结构的g-C3N4纳米片被剥离并锚定在GO表面，形成了GO/g-C3N4杂化物。此外，在GO的最佳重量分数下，杂化物的光电流得到了显著增强。结果，具有优化光电流特性的杂化物的相应光催化性能得到了很大提高。
