In this study, after firing and powdering Cu, Cr, and S with NP-400 TiO₂, an NO_x removal rate test was performed according to the ISO test method to analyze the photocatalytic reactivity in visible light. The distribution of the photocatalyst and visible light reactivity on the surface of the test specimen were confirmed through SEM (Scanning electron microscope), EDS (Energy dispersive spectroscopy), XRD (X-ray diffraction), UV-visible absorption spectrum and energy band gap tests. The flowability of UHPC (Ultra high performance concrete) slightly decreased due to the increase in the photocatalyst mixing rate, but both J-Ring and L-Box test results showed that there is no problem when concrete is placed. As a result of SEM and EDS tests, good microstructure and peak values were confirmed in the test specimens doped with Cu, and as a result of the XRD test, anatase and rutile peaks were confirmed in the Cu, Cr, and S specimens. In the UV-visible absorption spectrum analysis, it was confirmed that only the specimen doped with Cu maintains a high absorption power of 0.8 up to 700 nm, and the inherent band gaps are reduced to 2.9 eV, thereby increasing the possibility of reaction in visible light. Finally, as a result of the NO_x removal test by the ISO test method, about 15.8% was removed for 5 h in the specimen doped with Cu, and the removal efficiency is estimated to be possible up to about 25% when applied with the TPBRC (transparent plastic bar reinforced concrete).

中文翻译：

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Cu，Cr，S掺杂的TiO2对透明塑料筋混凝土的影响

在本研究中，在将NP，400 TiO ₂与Cu，Cr和S烧成粉末后，NO _x根据ISO测试方法进行去除速率测试以分析可见光中的光催化反应性。通过SEM（扫描电子显微镜），EDS（能量分散光谱），XRD（X射线衍射），UV-可见吸收光谱和能带隙确认了在样品表面上光催化剂的分布和可见光反应性。测试。由于提高了光催化剂的混合速率，UHPC（超高性能混凝土）的流动性略有下降，但是J-Ring和L-Box试验结果均表明，放置混凝土时没有问题。通过SEM和EDS测试，在掺杂Cu的试样中证实了良好的微观结构和峰值，而通过XRD测试，在Cu，Cr，Cu，Cr中证实了锐钛矿和金红石峰。和S标本。在紫外-可见吸收光谱分析中，已确认只有掺杂铜的样品才能在0.8至700 nm的范围内保持0.8的高吸收能力，并且固有带隙减小至2.9 eV，从而增加了在可见光中反应的可能性。光。最后，由于没有_X由ISO测试方法去除试验中，在掺杂有铜试样5小时除去约15.8％，并且去除效率估计当与TPBRC（透明塑料棒钢筋混凝土）施加到可以高达约25％的。