| 第 47 卷第 6 期 |  | Vol. 47 No. 6 | | 2017 年 12 月 | Dec 2017 |
|
所屬欄目：功能材料
G-C3N4 ／CeO2光催化劑的制備及其還原CO2的性能研究 |
| 謝春妹，張立新，孟雅娟，王 琪，張 潔
（中北大學(xué) 化學(xué)工程與技術(shù)學(xué)院，山西 太原 030051） |
| 摘 要：環(huán)境和能源問(wèn)題是人類(lèi)在21世紀面臨的兩個(gè)重大問(wèn)題。利用有效的光催化劑將CO2催化轉化為碳氫燃料既有利于改善環(huán)境，又可以緩解能源問(wèn)題。將類(lèi)石墨相氮化碳（g-C3N4）與氧化鈰（CeO2）復合形成異質(zhì)結復合材料作為光催化劑。利用XRD、TEM、FT-IR、DRS、光致發(fā)光等手段對制備的光催化劑進(jìn)行表征，表征結果表明中空氧化鈰納米球分布在g-C3N4表面，引進(jìn)氧化鈰增強g-C3N4的光學(xué)性能；在可見(jiàn)光條件下進(jìn)行光催化還原CO2的實(shí)驗，光催化結果表明，氧化鈰的引進(jìn)提高了g-C3N4的光催化效率。 |
| 關(guān)鍵詞：g-C3N4；復合材料；光催化還原；二氧化碳 |
| 中圖分類(lèi)號：TB34 文獻標識碼：A 文章編號：1009-9212（2017）06-0065-05 |
|
| Preparation of g-C3N4/CeO2 Photocatalysts and Their Performance for Photoreduction of CO2 |
| XIE Chun-mei, ZHANG Li-xin, MENG Ya-juan, WANG Qi, ZHANG Jie
(School of Chemical Engineering and Technology, North University of China, Taiyuan 030051, China) |
| Abstract：Environment and energy issues were two major problems for human in the 21st century. Using effective photocatalysts to convert CO2 to hydrocarbon fuels is an effective method to solve the problems. In this work, graphene carbon nitride combined with cerium oxide was used to construct hetero-junction composite materials as photocatalysts. The samples were characterized by XRD, TEM, FT-IR, DRS, and photoluminesence, et al. The characterization results indicated that hollow cerium oxide was distributed on the surface of g-C3N4 nanosheets, and introduced cerium oxide enhanced the optical properties of g-C3N4; The experiment of photoreduction CO2 was carried out under visible light. The results showed that the photocatalytic efficiency was improved after introduction cerium oxide. |
| Key words：graphene carbon nitride; composites; photocatalytic reduction; carbon dioxide |
|
作者簡(jiǎn)介：謝春妹（1994-），女，江西贛州人，碩士研究生，研究方向：光催化（E-mail:593458403@qq.com）
|
收稿日期：2017-11-20
|
|