Ceria is an n-type semiconductor.Due to its unique crystal structure and reversible conversion between Ce3+ and Ce4+,ceria has excellent oxygen storage and release capacity,which makes it an important photocatalytic material.In recent years,cerium oxide as a photocatalyst in environmental treatment and energy utilization has attracted extensive attention.Starting from the structure,basic properties and photocatalysis principle of ceria,the methods to improve the photocatalytic performance of ceria by loading,doping and semiconductor compounding were described.The application research progress of ceria in photocatalytic degradation of organic pollutants,photocatalytic carbon dioxide reduction,photocatalytic water splitting for hydrogen production and photocatalytic nitrogen fixation in recent years were summarized.Finally,the future development of ceria in the field of photocatalysis was prospected.
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基金资助
辽宁省科技厅重点攻关项目(F12-277-1-09);辽宁省自然科学基金项目(201602587)
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