| 马琳,康晓雪,胡绍争,王菲.Fe-P共掺杂石墨相氮化碳催化剂可见光下催化性能研究[J].分子催化,2015,(4):359-368 |
| Fe-P共掺杂石墨相氮化碳催化剂可见光下催化性能研究 |
| Preparation of Fe, P Co-doped Graphitic Carbon Nitride with Enhanced Visible-light Photocatalytic Activity |
| 投稿时间：2015-06-06 修订日期：2015-08-07 |
| DOI： |
| 中文关键词: 石墨相氮化碳 磷 铁 光催化 共掺杂 |
| 英文关键词:g-C3N4 phosphate iron photocatalysis codoping |
| 基金项目:辽宁省教育厅一般项目资助 |
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| 中文摘要: |
| 采用双氰胺、硝酸铁和磷酸氢二铵为原料制备Fe-P共掺杂石墨相氮化碳(g-C3N4)。使用X射线衍射光谱(XRD)、N2吸附、紫外可见光谱(UV-Vis)、傅里叶红外光谱(FT-IR)、荧光光谱(PL)、X射线光电子能谱(XPS)等分析手段对制备的催化剂进行了表征。结果表明，引入掺杂剂可以抑制g-C3N4的晶粒生长，提高催化剂比表面积，降低带隙能，抑制光生电子和空穴的复合。在可见光下降解罗丹明B的实验表明Fe-P共掺杂g-C3N4的反应速率常数是纯g-C3N4的6倍。本文推测了P和Fe可能的掺杂态以及光催化反应机理。 |
| 英文摘要: |
| Preparation of Fe and P co-doped g-C3N4 was described, using dicyandiamide monomer, ferric nitrate, and diammonium hydrogen phosphate as precursor. X-ray diffraction (XRD), N2 adsorption, UV-Vis spectroscopy, Fourier transform infrared spectra (FT-IR), photoluminescence (PL), and X-ray photoelectron spectroscopy (XPS) were used to characterize the prepared catalysts. The results indicated that the addition of dopants inhibited the crystal growth of graphitic carbon nitride, enhanced the surface area, decreased the band gap energy, and restrained the recombination of photogenerated electrons and holes. The reaction rate constant of Fe and P co-doped g-C3N4 was 6.6 times higher than that of neat g-C3N4 for Rhodamine B (RhB) photodegradation under visible light. The possible mechanism and doping sites of P and Fe were proposed. |
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