【作者】 张军； 陈维林； 王恩波；

【Author】 Jun Zhang, Wei-Lin Chen* and En-Bo Wang* Key Laboratory of Polyoxometalate Science of Ministry of Education Department of Chemistry, Northeast Normal University, Changchun 130024

【机构】 东北师范大学化学学院；

【摘要】 <正>利用层接层(LBL)方法将多金属氧酸盐自组装到TiO2纳米颗粒表面,制得的复合材料POM@TiO2通过TEM,XRD,FTIR和EDX等进行表征。POM@TiO2对有机污染物MB和RhB具有理想的吸附和光降解降解活性(典型实验中,10mg催化剂可在3分钟内对40mL 20mgL-1MB溶液的染料移除率达到99.5%)。多酸和TiO2之间的电子转移也通过荧光淬灭和光电流测试证实。更多还原

【Abstract】 Polyoxometalates were self-assembled on the surface of titanium dioxide (TiO2 ) nanoparticles through LBL method. The obtained composite materials were characterized by TEM, XRD, FTIR and EDX.. The new hybrids POM@TiO2 showed both ideal adsorption and improved photodegradation activity towards organic pollutants methylene blue (MB) and rhodamine B (RhB) (typically, removal of 40mL 20mg L-1 MB by 10mg POM@TiO2 was up to 99.5%). Effective charge transfer between TiO2 and POMs was also confirmed by the significant photoluminescence quenching and improved photocurrent compared to bare TiO2 nanoparticles.更多还原