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通过调节Na_3PO_4溶液中H_3PO_4的含量制得沉淀剂,AgNO_3与此沉淀剂反应制得Ag_3PO_4粉末.当沉淀剂pH=6时,所制得的Ag_3PO_4粉末表现出最高的光催化降解甲基蓝和罗丹明B活性.进一步添加KBr溶液修饰Ag_3PO_4可制得AgBr/Ag_3PO_4粉末.该光催化剂可使阴离子染料(如活性橙和甲基橙)脱色.采用适当的捕获剂考察了参与光催化降解过程的活性物种的抑制活性.光催化反应之后,质谱检测证实染料降解为更小的分子.以Chlorella vulgaris为生物指示剂考察了处理前后染料的生态毒性.
By adjusting the content of H_3PO_4 in Na_3PO_4 solution, Ag_3PO_4 powder was obtained by reacting AgNO_3 with this precipitating agent.When pH = 6, Ag_3PO_4 powder showed the highest photocatalytic degradation of methyl blue and rhodan Ming activity of B. AgBr / Ag_3PO_4 powder was prepared by further adding KBr solution to Ag_3PO_4. The photocatalyst can decolorize anionic dyes such as active orange and methyl orange. The activity of participating in the photocatalytic degradation process was investigated with appropriate capture agent Species inhibitory activity.After the photocatalytic reaction, mass spectrometry test confirmed the degradation of the dye into smaller molecules.The ecological toxicity of the dye before and after treatment was investigated with the biological indicator of Chlorella vulgaris.