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文章编号： 16726987（2019）02003606； DOI： 10.16351/j.16726987.2019.02.005
李龙飞， 姜代旬， 潘凤丹， 刘廓， 杜芳林*， 曲晓飞， 尹正茂
（青岛科技大学 材料科学与工程学院，山东 青岛 266042）
摘要： 石墨相氮化碳（gC3N4）作为一种半导体材料，它的禁带宽度约为27 eV，具有优异的物理和化学稳定性，并且其原料来源广泛，无毒，廉价，可以应用于产氢、降解有机染料及CO2的还原等领域。本研究以尿素为原料制备了gC3N4，研究了热聚合温度、反应时间对制备的gC3N4光催化降解罗丹明B性能的影响，并考察了对甲基橙、亚甲基蓝等不同染料的光催化降解效果。结果表明：石墨相氮化碳对于罗丹明B和亚甲基蓝的降解效果较好（3 h之内几乎完全降解），而对于甲基橙几乎没有降解效果；随着聚合温度的提高（600 ℃以下），反应时间的延长（9 h以内），产物的光催化降解染料的效果越好。
关键词： 石墨相氮化碳； 尿素； 光催化降解
中图分类号： TQ 129文献标志码： A
引用格式：李龙飞， 姜代旬， 潘凤丹， 等. 石墨相氮化碳的制备与光催化性能\[J\]. 青岛科技大学学报（自然科学版）， 2019， 40（2）： 3641.
LI Longfei， JIANG Daixun， PAN Fengdan， et al. Preparation and photocatalytic properties of graphitic carbon nitride\[J\]. Journal of Qingdao University of Science and Technology（Natural Science Edition), 2019, 40(2)： 3641.
Preparation and Photocatalytic Properties of Graphitic Carbon Nitride
LI Longfei， JIANG Daixun， PAN Fengdan， LIU Kuo， DU Fanglin， QU Xiaofei， YIN Zhengmao
(College of Materials Science and Engineering，Qingdao University of Science and Technology，Qingdao 266042, China)
Abstract: As a semiconductor material, graphitic carbon nitride (gC3N4), its band gap is about 27 eV. With excellent physical and chemical stability, gC3N4 has the characteristics of “earthabundant” nature, nontoxic, cheap and can be applied to hydrogen evolution, degradation of organic dyes, CO2 reduction and other fields. In this paper, the photocatalytic degradation effect of gC3N4 on different dyes has been investigated, as well as the influence of different thermal polymerization temperature and thermal insulation time on photocatalytic performance. In this paper, gC3N4was made by urea, and the effect of polymerization temperature and reaction time on the photocatalytic degradation of Rhodamine B by gC3N4 was investigated.The photocatalytic degradation effects of different dyes such as methyl orange and methylene blue were also investigated.The results showed that the gC3N4 had great effect on the degradation of Rhodamine B and methylene blue (almost completely degraded within 3 h),but little effect for methyl orange. With the increase of polymerization temperature (below 600 ℃) and the prolongation of the reaction time (within 9 h), the effect of photocatalytic degradation of the dye was better.
Key words:graphite phase nitride; urea; photocatalytic
收稿日期： 20180622
基金项目： 国家自然科学基金项目（61504073，51602168）.
作者简介： 李龙飞（1993-），男，硕士研究生.*通信联系人.
