The widespread use of CeO2 nanoparticles(NPs)containing products will inevitably result in the release of CeO2 NPs into the aquatic and soil environments,where the natural colloids such as kaolin,goet
纳米材料表界面氧气分子活化过程是决定活性氧物种生成效率的关键因素.光照下光生电子既可以与O2 分子发生单电子还原反应生成·O2-(O2+e-=·O2-,0.046 V vs NHE),也可以通过双电子还原反应生成H2O2(O2+2H++2e-= H2O2,0.682 V vs NHE),或者发生四电子还原反应生成H2O(O2+4H++4e-= H2O,1.23 V vs NHE),而O2 分子活化