无机材料学报2021，Vol.36Issue(1)：88-94,中插1-中插2,9.DOI:10.15541/jim20200142
铋掺杂提高氧化铈中氧空位浓度增强CO2光催化还原性能
Bi-doped Ceria with Increased Oxygen Vacancy for Enhanced CO2 Photoreduction Performance
摘要
Abstract
Oxygen vacancy plays an important role in promoting CO2 adsorption and reduction on photocatalysts. Bi was heavily doped into ceria, forming a solid solution catalyst Ce1?xBixO2?δ meanwhile maintaining the fluorite structure, to increase the oxygen vacancy concentration. The sample Ce0.6Bi0.4O2-δ showed the highest photocatalytic activity with a CO yield of ～4.6 times that of the pristine ceria nanorods. Bi was homogeneously dispersed into the fluorite ceria which was confirmed by XRD and EDX elemental mapping. It has been evidenced by the results of Raman and XPS that Bi introduction boosts the concentration of oxygen vacancy in the solid solution that can fa-cilitate the adsorption/activation of carbonate and bicarbonate intermediates on its surface according to in-situ FT-IR.关键词
光催化/CeO2/CO2还原/Bi/氧空位Key words
photocatalysis/CeO2/CO2 reduction/Bi/oxygen vacancy分类
化学化工引用本文复制引用
刘亚鑫,王敏,沈梦,王强,张玲霞..铋掺杂提高氧化铈中氧空位浓度增强CO2光催化还原性能[J].无机材料学报,2021,36(1):88-94,中插1-中插2,9.基金项目
National Key Basic Research Program of China (2017YFE0127400) （2017YFE0127400）
National Natural Science Foundation of China (21835007, 51872317) （21835007, 51872317）
Shanghai Municipal Government S&T Project (17JC1404701) （17JC1404701）
