In the present research, the role of graphitic carbon nitride (g-C₃N₄) and graphene oxide (GO) nanosheets in the enhancement of the photocatalytic activity of silver silicate (ASO) has been investigated. For this purpose ASO, ASO/GO, ASO/g-C₃N₄, have been synthesized and the results of experiments showed that the carbon-based nanosheets can efficiently enhance the photocatalytic activity of ASO. Based on the results of DRS, band gap energy, and PL analysis, introduction of GO in ASO structure can narrow down the band gap energy of the resultant nanocomposite and also can effectively decrease the electron-hole recombination rate. Whereas, the photocatalytic enhancement in ASO/CNN is mainly due to the reduced band gap energy and wide optical absorption. The influence of operational parameters, including pH, the weight percentage of nanosheets, initial concentration of Acid blue 25, catalyst dosage, and light intensity on degradation efficiency was surveyed. The results showed that 80 ppm of “ASO/GO (1 wt%) in pH = 7” or “ASO/CNN (0.5 wt%) in pH = 5” exhibited 90.22 % and 88.93 % degradation for 20 ppm dye solution under the same light intensities. The scavenger’s experiments indicated that superoxide anion radical plays a major role in dye photodegradation by ASO composites.

在本研究中，已经研究了石墨碳氮化物（gC ₃ N ₄）和氧化石墨烯（GO）纳米片在增强硅酸银（ASO）的光催化活性方面的作用。为此，ASO，ASO / GO，ASO / gC ₃ N ₄，合成，实验结果表明，碳基纳米片可以有效地提高ASO的光催化活性。根据DRS，带隙能和PL分析的结果，将GO引入ASO结构可以缩小所得纳米复合材料的带隙能，还可以有效降低电子-空穴复合率。然而，ASO / CNN中的光催化增强主要归因于带隙能量的减少和广泛的光吸收。调查了操作参数，包括pH，纳米片的重量百分比，酸性蓝25的初始浓度，催化剂用量和光强度对降解效率的影响。结果表明，80 ppm的“ pH = 7时的ASO / GO（1 wt％）”或“ pH = 5时的ASO / CNN（0.5 wt％）”分别占90.22％和88。在相同的光强度下，20 ppm染料溶液的降解率为93％。清道夫的实验表明，超氧阴离子自由基在ASO复合材料对染料的光降解中起主要作用。