Photocatalytic reaction for synthesizing methacrolein from C3H8 and CO2 onsemiconductors has a great significance in utilization of alkanes and protection ofenvironment.

• 二氧化碳和丙烷直接合成异丁烯醛在低碳烷烃和CO_2资源利用及烃类氧化物合成方面具有重要的理论意义和应用价值。