摘要
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%。
Single crystals of the complexNaGa（C7H3NO4）2·2H2O were prepared by reaction of sodium 2,6-pyridinedicarboxylate with GaCl3 at pH 3. The structure was determined by elemental analysis, IR and X-ray single crystal analysis. The activity of the new prepared photocatalyst was investigated by the degradation reaction of Rhodamine B. The results show that when the content of the catalyst in solution is 20 mg, the Rhodamine B initial concentrations is 2.0 × 10^-4mol·L^-1, the flow rate of O2 is 200 ml·min^-1 and the light source is mercury vapor lamp（500 W）, uhe complex exhibits considerably good photocatalytic activity. Within only one hour, the degradation of Rhodamine B can amount to 98.9%.
出处
《稀有金属》
EI
CAS
CSCD
北大核心
2005年第6期871-874,共4页
Chinese Journal of Rare Metals
基金
河南省自然科学基金资助项目(2000150035)
关键词
配合物
光催化降解
gallium complex
photocatalytic degradation
