Ag2O/g-C3N4可能的除藻机理:在可见光照射下,g-C3N4和Ag2O均能吸收光子生成光生电子-空穴对,二者构成典型的p-n型异质结,一方面 g-C3N4和 Ag2O 的导带电位分别为 -1.12 eV 和 0.2 eV,g-C3N4的导带位置比 Ag2O 更负,异质结的内部电场和能带结构使得 g-C3N4导带上的电子难以跃迁到 Ag2O 的导带上。g-C3N4导...
g-C3N4复合材料的晶体结构,形貌,光学性质等进行表征和分析.以亚甲基蓝溶液为目标降解物,研究了Ag-Ag2O/TiO2-g-C3N4复合材料的可见光催化性能.结果 表明:在纳米Ag颗粒修饰的Ag-Ag2O/TiO2-g-C3N4复合材料中,Ag部分氧化成Ag2O;与g-C3N4的协同作用使Ag-Ag2O/TiO2-g-C3N4复合催化剂具有良好的可见光催化活性;可见光...
The optimal photocatalytic activity was achieved with Ag2O-CN1.0, which reached up to 99.1% removal of OFL after 15-min reaction and the pseudo-first-order constant was 0.469 min, approximately 42 times higher than that of g-C3N4. Considering the complexity of the actual environment, the ...
The interaction with EPS decreases the surface zeta potential of the Ag2O/g-C3N4 from 7.71 to -22.3 mV with the increase in EPS concentration, and the maximum ratio of particle size increases from 825 to 1281 nm. In addition, the interaction with EPS inhibits the release of Ag+ in Ag2O/...
Xing, S. Song, Preparation and enhanced visible light photocatalytic activity of novel g-C3N4 nanosheets loaded with Ag2CO3 nanoparticles, Nanoscale 7 (2015) 758–764. [49] G. Dai, S. Liu, Y. Liang, K. Liu, Fabrication of a nano-sized Ag2CO3/reduced gra- phene oxide photocatalyst ...
采用水热合成法制备Ag2O/g-C3N4复合光催化剂,通过XRD,SEM,EDS等手段对其进行表征,以亚甲基蓝模拟目标污染物,考察光催化剂种类,投加量和MB初始浓度对光催化活性的影响.结果 表明,Ag2O沉积到g-C3N4的表面并发生明显的团聚,但未改变其晶体结构;在可见光照射180 min后,当Ag2O/g-C3N4复合材料投加量为1.0 g/L,MB...
异质结采用原位生长法制备V2O5,并将其与Ag2O/g-C3N4水热复合制备V2O5-Ag2O/g-C3N4复合光催化剂.利用XRD,FT-IR,SEM和UV-Vis DRS等方法对样品的形貌结构及光学性质进行表征.结果表明,V2O5成功掺杂在Ag2O/g-C3N4上,与Ag2O/g-C3N4相比,复合材料对可见光的吸收范围增大;在可见光照射180min后,V2O5掺杂量为15%的...
Sun, Enhanced photocatalytic activity over the Ag2O-g-C3N4 composite under visible light, Catal. Sci. Technol. 4 (2014) 758-765.Shi L, Liang L, Ma J, et al. Enhanced photocatalytic activity over the Ag2O-g-C3N4 composite under visible light. Catalysis Science & Technology, 2014, 4(3):...
Ag2O@g-C3N4 catalysts with p-n heterostructure were prepared by the hydrothermal method. The catalysts were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectric spectroscopy, and UV/visible light spectroscopy. Ag2O nanoparticles w...
In this work, a series of Ag2O/g-C3N4 with p-n heterojunction were synthesized by a chemical deposition method for photocatalytic algae removal under visible light. The effects of surface charge and composition ratio for the formation of heterojunction were investigated. The crystal phase, ...