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2,6-吡啶二甲酸钠与三氯化镓在pH≈3的条件下直接反应,合成了NaGa(C7H3NO4)2.2H2O配合物单晶。通过元素分析、红外及X射线衍射分析确定了配合物的结构。以该配合物作为催化剂,用罗丹明B模拟染料废水进行了光催化降解脱色试验,对影响反应的各种条件(如催化剂的投加量,染料的初始浓度,通氧速率及光源)进行了考察。结果表明,在催化剂为20 mg,染料初始浓度为2.0×10-4mol.L-1,通氧速率为200 ml.min-1,光源为500 W汞灯时,配合物NaGa(C7H3NO4)2.2H2O具有优良的催化活性,1 h内对罗丹明B的降解率可达98.9%。
Sodium 2,6-pyridinedicarboxylate reacted directly with gallium trichloride at pH≈3 to synthesize a single crystal of NaGa (C7H3NO4) 2.2H2O complex. The structure of the complex was confirmed by elemental analysis, infrared and X-ray diffraction. Using this complex as a catalyst, the photocatalytic degradation of rhodamine B simulated dye wastewater was carried out. The conditions affecting the reaction (such as catalyst dosage, initial dye concentration, oxygen passage rate and light source) Inspected The results showed that when the catalyst was 20 mg, the initial concentration of dye was 2.0 × 10-4 mol·L-1, the oxygen flow rate was 200 ml.min-1, and the light source was 500 W mercury lamp, the complex NaGa (C7H3NO4) 2.2H2O With excellent catalytic activity, the degradation rate of Rhodamine B within 1 h can reach 98.9%.