期刊
INORGANIC CHEMISTRY COMMUNICATIONS
卷 107, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.inoche.2019.107451
关键词
g-C3N4; Fe doping; Photocatalytic activity; Fe3+/Fe2+
资金
- Natural Science Foundation of China [21878257, 51402209, 21276220]
- Natural Science Foundation of Shanxi Province [201603D121017, 201601D102020, 201701D2210831]
- International Cooperation Program of Shanxi Province [201803D421079]
- Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi [2016124]
- Shanxi Provincial Key Innovative Research Team in Science and Technology [201605D131045-10]
- Jiangsu Collaborative Innovation Center for Ecological Building Material and Environmental Protection Equipments
- Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province
Fe-doped graphitic carbon nitride (g-C3N4) materials were synthesized by one-step thermal condensation of iron nitrate nonahydrate (Fe(NO3)(3)center dot 9H(2)O) and melamine as precursors. The morphology and crystal structure of the synthesized Fe-doped g-C3N4 samples were verified by XRD, SEM and FT-IR methods. The results reveal that iron species were well dispersed in the structure of g-C3N4 without changing the layered stacking structures, and might intercalate into the layer of g-C3N4 by coordinating to N atoms to form intercalation compounds, thereby affecting the energy band structure, enhancing visible light absorption and electrons-holes separation rate. Especially, the sample with 0.5 wt% Fe exhibited the highest activity in degradation of Rhodamine B under visible light irradiation, indicating that Fe doping could promote the photocatalytic activity of g-C3N4, while excessive Fe might break the sheet structure and inhibit activity. A plausible mechanism for the enhanced photocatalytic activity was proposed from trapping experiments, which emphasized the pivotal role of Fe3+/Fe2+ couple in the photocatalytic reaction.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据