The addition of a photocatalyst to ordinary building materials such as concrete creates environmentally friendly materials by which air pollution or pollution of the surface can be diminished. The use of LiNbO3 photocatalyst in concrete material would be more beneficial since it can produce artificial photosynthesis in concrete. In these research photoassisted solid-gas phases reduction of carbon dioxide (artificial photosynthesis) was performed using a photocatalyst, LiNbO3, coated on concrete surface under illumination of UV-visible or sunlight and showed that LiNbO3 achieved high conversion of CO2 into products despite the low levels of band-gap light available. The high reaction efficiency of LiNbO3 is explained by its strong remnant polarization (70 µC/cm2), allowing a longer lifetime of photoinduced carriers as well as an alternative reaction pathway. Due to the ease of usage and good photocatalytic efficiency, the research work done showed its potential application in pollution prevention.
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机译：在普通建筑材料（例如混凝土）中添加光催化剂可产生环保材料，从而可减少空气污染或表面污染。 LiNbO3光催化剂在混凝土材料中的使用将更为有益，因为它可以在混凝土中产生人工光合作用。在这些研究中，使用光催化剂LiNbO3进行光辅助固相还原二氧化碳（人工光合作用），该光催化剂在紫外可见光或阳光下涂覆在混凝土表面，表明LiNbO3可以将CO2高转化为产品可用的带隙光水平。 LiNbO3的高残留极化（70 µC / cm 2 ）可以解释其高反应效率，从而延长了光致载流子的寿命，并提供了另一种反应途径。由于易于使用和良好的光催化效率，完成的研究工作表明其在污染预防中的潜在应用。
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