摘要
通过加热AgNO3与g-C3N4成功制备了Ag/g-C3N4复合光催化材料。利用X射线衍射仪(XRD)、傅里叶红外光谱仪(FTIR)分析热解产物的物相和结构,采用紫外-可见吸收光谱和光致发光谱(PL)表征样品的光吸收和荧光性质。以罗丹明B为模型污染物,评价样品的可见光(λ≥420nm)光催化性能。结果表明:与纯g-C3N4相比,3%载银量的Ag/g-C3N4复合光催化材料在可见光下降解罗丹明B的光催化性能最好。分析表明Ag与g-C3N4的协同作用抑制光致电子空穴对的复合是光催化性能提高的主要原因。
Ag/g-C3N4composite photocatalysts were successfully prepared by heating the mixture of AgNO3 and g- Ca N4 reactants, X-ray diffraction （XRD）a Fourier transform infrared spectroscopy （FT-IR）were used to analyze the phase and structure of the pyrolysis products. The light absorption range and fluorescence properties of the samples can be tested through UV-Vis spectroscopy and fluorescence analysis （PL）. The photocatalytic activities of the samples under visible light irradiation （λ ≥ 420nm）were evaluated by monitoring oxidation of RhB evolution. The results showed that the Ag/g- C3 N4 compounds exhibited significantly enhanced photocatalytic performance for degradation of the rhodamine B under visible light irradiation compared with pure g-C3 N4. while the optimal content of metal Ag was determined to be 3 %. According to analysis,the enhanced photocatalytic performance could be mainly attributed to the synergic effect between Ag and g- C3 N4, which inhibited photogenerated carriers recombination.
出处
《化工新型材料》
CAS
CSCD
北大核心
2014年第5期83-85,共3页
New Chemical Materials
基金
国家自然科学基金青年项目(21103041)
河南省高校科技创新团队(2012IRTSTHN004)
