摘要
以杂多酸盐β_2-K_8SiW_(11)O_(39)·14H_2O为掺杂剂,采用固相法制备了β_2-SiW_(11)/PAIN/SnO_2三元复合催化剂,并用红外光谱、X-射线粉末衍射和扫描电子显微镜等手段对其进行了表征。以亚甲基蓝染料废水(8 mg/L)为探针反应,评价了其光催化性能,与一元催化剂SnO_2、β_2-SiW_(11)和二元催化剂/PAIN/SnO_2比较,三元催化剂β_2-SiW_(11)/PAIN/SnO_2表现出较高的光催化降解性能,经30W紫外灯照射120min后,其降解率为94.63%,光催化降解亚甲基蓝为一级动力学反应。
The ternary composite catalyst β2-SiW11/PAIN/SnO2 was prepared by using heteropolysilicotungstate β2- Ks SiW11 O39 · 14H2 O as dopant. The material was characterized by IR,XRD and SEM techniques. The photocatalytie activities of the composite were investigated for the degradation of exhausted methylene blue as a probe under the illumination of UV. Compared with the mono photocatalyst SnO2,β2-SiW11 and PAIN/SnO2, the ternary photoeatalyst β2-SiW11/PAIN/ SnO2 showed higher photocatalytic performance. The photodegradation rate of methylene blue （8 mg/L） could reach 94.63% under 30 W ultraviolet light for 120min. The reaction of photocatalytie degradation of methylene blue with β2- SiW11/PAIN/SnO2 followed the characteristic first-order reaction kinetics.
出处
《化工新型材料》
CAS
CSCD
北大核心
2015年第3期35-37,共3页
New Chemical Materials
基金
黑龙江省自然科学基金资助(B2007-15)
黑龙江省教育厅基金资助(12531760)
