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首页> 外文期刊>RSC Advances >Facile one-pot synthesis of Mg-doped g-C3N4 for photocatalytic reduction of CO2
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Facile one-pot synthesis of Mg-doped g-C3N4 for photocatalytic reduction of CO2

机译：轻掺杂一锅合成Mg掺杂的g-C3N4以光催化还原CO2

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Graphitic carbon nitride (g-C _(3) N _(4) ) has attracted wide attention due to its potential in solving energy and environmental issues. However, rapid charge recombination and a narrow visible light absorption region limit its performance. In our study, Mg-doped g-C _(3) N _(4) was synthesized through a facile one-pot strategy for CO _(2) reduction. After Mg doping, the light utilization efficiency and photo-induced electron–hole pair separation efficiency of the catalysts were improved, which could be due to the narrower band gap and introduced midgap states. The highest amounts of CO and CH _(4) were obtained on Mg-CN-4% under ultraviolet light illumination, which were about 5.1 and 3.8 times that of pristine g-C _(3) N _(4) , respectively; the yield of CO and CH _(4) reached 12.97 and 7.62 μmol g ~(?1) under visible light irradiation. Our work may provide new insight for designing advanced photocatalysts in energy conversion applications.
机译：石墨碳氮化物（g-C _（3）N _（4））由于其解决能源和环境问题的潜力而备受关注。但是，快速的电荷复合和狭窄的可见光吸收区域限制了其性能。在我们的研究中，通过一种简便的一锅策略降低Mg掺杂的g-C _（3）N _（4）来合成CO_（2）。镁掺杂后，催化剂的光利用效率和光致电子-空穴对分离效率得到了提高，这可能是由于带隙变窄和引入了中间能隙状态所致。在紫外线照射下，Mg-CN-4％的CO和CH_（4）含量最高，分别是原始g-C _（3）N _（4）的5.1倍和3.8倍;在可见光照射下，CO和CH_（4）的收率分别达到12.97和7.62μmolg〜（？1）。我们的工作可能为设计能量转换应用中的高级光催化剂提供新的见解。

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