| 阎鑫,惠小艳,闫从祥,艾涛,苏兴华,王振军,孙国栋,赵鹏.类石墨相氮化碳二维纳米片的制备及可见光催化性能研究[J].材料导报,2017,31(9):77-80 |
| 类石墨相氮化碳二维纳米片的制备及可见光催化性能研究 |
| Preparation and Visible-light Photocatalytic Activity of Graphite-like Carbon Nitride Two-dimensional Nanosheets |
| |
| DOI：10.11896/j.issn.1005-023X.2017.09.010 |
| 中文关键词: 类石墨相氮化碳 纳米片 液相剥离 可见光催化 |
| 英文关键词: graphite-like carbon nitride, nanosheet, liquid exfoliation, visible photocatalysis |
| 基金项目:国家自然科学基金(51402024)；中央高校基础研究基金(310831153504)；陕西省自然科学基金(2015JM2070；2015JQ5149) |
|
| 摘要点击次数: 3036 |
| 全文下载次数: 1456 |
| 中文摘要: |
| 以三聚氰胺为原料制备类石墨相氮化碳(g-C3N4),采用球磨与超声联用技术制备g-C3N4二维纳米片。 利用X 射线衍射光谱(XRD)、紫外-可见漫反射(UV-Vis)光谱、扫描电镜(SEM)、透射电镜(TEM)、原子力显微镜(AFM)、荧光(PL)光谱等分析手段对制备的催化剂进行了表征。 结果表明: g-C3N4二维纳米片具有与体相g-C3N4相同的晶体结构,片层结构仅有5个原子层厚。g-C3N4二维纳米片增加了对可见光的吸收,提高了光生电子-空穴对的分离效率。以染料罗丹明B的降解反应研究了g-C3N4二维纳米片在可见光下的催化性能。 结果表明,球磨超声1 h后制备的g-C3N4二维纳米片表现出最佳的光催化性能, 150 min 内对罗丹明B的降解率高达94%,是体相g-C3N4的2 倍。 |
| 英文摘要: |
| The graphite-like carbon nitride (g-C3N4) two-dimension (2D) nanosheet were successfully prepared by a ball-mi-lling and ultrasound process using melamine as raw material. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS), atomic force microscope (AFM) and photoluminescence spectrum (PL). The XRD results showed that g-C3N4 2D nanosheet had the same crystal phase as g-C3N4. The exfoliated products were comprised of only 5 C-N layers. The g-C3N4 2D nanosheet improved the absorption of visible light and accelerated the separation of photo-generated electron-hole pairs. The photocatalytic performance of the samples was evaluated by photocatalytic oxidation of rhodamine B (RhB) under visible light irradiation. The results show that g-C3N4 2D nanosheet exhibited a much higher degradation rate which is 2 times as high as that of pure g-C3N4. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
