中文摘要：

以通过乳液聚合方法制备的聚苯乙烯粒子作为软模板,合成了多孔石墨相氮化碳（g-C_3N_4）。通过傅立叶变换红外光谱,X射线衍射和X射线光电子能谱分析并结合比表面积测定,研究了模板对g-C_3N_4的化学结构和晶体结构的影响,结果表明：模板的引入不改变g-C_3N_4的化学结构,对晶体结构也基本无影响,通过调节聚苯乙烯软模板的含量可以控制g-C_3N_4的孔隙率和比表面积;紫外-可见吸收光谱测定结果表明：所合成多孔石墨相氮化碳在200-800nm波长范围内均有吸收。比表面的可调控性和宽光谱吸收有利于促进多孔石墨相氮化碳在光催化领域的应用。

英文摘要：

Porous graphitic carbon nitrides（ g-C_3N_4） were synthesized by using polystyrene particles prepared by simple emulsion polymerization as soft templates.To research the influence of adding templates on the chemical,crystalline and surface structure of gC_3N_4 samples were characterized by Fourier transformation infrared spectroscopy（ FTIR）,X-ray diffraction（ XRD） and X-ray photoelectron spectroscopy（ XPS）. Adjusting the quantity of polystyrene could control the porosity and the BET surface area of gC_3N_4. The results of UV-Vis DRS spectra show that the synthesized g-C_3N_4 is absorbed in the wavelength range of 200-800 nm.The the controllability of specific surface area and wide spectral absorption is conducive to the promoting g-C_3N_4＇s applications in the field of photocatalysis.