1. 毕业设计（论文）的内容和要求

石墨相氮化碳g-c3n4(graphene carbon nitride, g-c3n4)是一种由碳、氮原子相互交替形成六元环，六元环之间通过碳碳键相互连接形成的二维材料，该二维材料在层与层之间的范德华力作用下堆积形成块体结构，从而构成的块状材料由于极出色的电子性能、机械强度以及光学性能等引起了国内外学者的研究热潮。

尤其在光催化领域，由于石墨相氮化碳具有与石墨烯同样的高比表面积、极快的电子传输速度等特点，从而被用来提高光催化效率。

单层由于具有比多层氮化碳更大的比表面积以此在相同的面积内有更多的原子和原子来提供活性位点，研究表明，单层具有较好的光催化降解有机污染物的性能。

2. 参考文献

[1] Niu P, Zhang L, Liu G, et al. Graphene‐like carbon nitride nanosheets for improved photocatalytic activities, Advanced Functional Materials, 2012, 22(22): 4763-4770. [2] Zhao H, Yu H, Quan X, et al. Fabrication of atomic single layer graphitic-C3N4 and its high performance of photocatalytic disinfection under visible light irradiation, Applied Catalysis B: Environmental, 2014, 152: 46-50. [3] He J, Chen L, Yi Z Q, et al. Fabrication of two-dimensional porous CdS nanoplates decorated with C 3 N 4 nanosheets for highly efficient photocatalytic hydrogen production from water splitting, Catalysis Communications, 2017. [4] Yu H, Chen F, Chen F, et al. In situ self-transformation synthesis of g-C3N4-modified CdS heterostructure with enhanced photocatalytic activity, Applied Surface Science, 2015, 358: 385-392. [5] Lu M, Pei Z, Weng S, et al. Constructing atomic layer g-C3N4-CdS nanoheterojunctions with efficiently enhanced visible light photocatalytic activity, Physical Chemistry Chemical Physics, 2014, 16(39): 21280-21288. [6] Jiang F, Yan T, Chen H, et al. A g-C3N4-CdS composite catalyst with high visible-light-driven catalytic activity and photostability for methylene blue degradation, Applied Surface Science, 2014, 295: 164-172. [7] Fu J, Chang B, Tian Y, et al. Novel C3N4-CdS composite photocatalysts with organic#8211;inorganic heterojunctions: in situ synthesis, exceptional activity, high stability and photocatalytic mechanism, Journal of Materials Chemistry A, 2013, 1(9): 3083-3090. [8] Li Y, Wei X, Li H, et al. Fabrication of inorganic#8211;organic core#8211;shell heterostructure: novel CdS@g-C3N4 nanorod arrays for photoelectrochemical hydrogen evolution, RSC Advances, 2015, 5(19): 14074-14080.

3. 毕业设计（论文）进程安排

2017-12-12～2018-01-13 查阅文献，制定实验方案，完成开题报告 2018-02-13～2018-04-20 复合光催化剂g-C3N4/CdS纳米晶粉体的制备 2018-04-21～2018-05-31 复合光催化剂g-C3N4/CdS纳米晶粉体测试表征 2018-06-01～2018-06-07 毕业论文的撰写 2018-06-08～2018-06-13 完成毕业论文的各项结束工作和毕业答辩