Preparation of Nitrogen-doped TiO2 Nanoparticle Catalyst and Its Catalytic Activity under Visible Light

做 N 的 TiC2 nanoparticle 光催化剂作为氮来源用 NH4Cl 通过一个大音阶的第五音胶化过程被准备并且在某些温度由锻烧列在后面。为结构和相片上的准备参数和他们的影响的系统的研究催化活动在下面紫外(紫外) 并且可见轻照耀被执行。多重技术(XRD， TEM， DRIF， DSC，和 XPS ) 被命令描绘水晶结构和做 N 的 TiO2 的化学绑定。它的相片催化活动被有机化合物的降级检验。在可见的光(λ 】 400nm ) 下面的准备做 N 的 TiO2 nanoparticles 的催化活动照耀被 4-chlorophenol 的分解证实，证明在做 N 的 TiO2 nanoparticle 催化剂的氮原子为可见轻催化活动负责。没有做 N，与这条修改线路准备的做 N 的 TiO2 nanoparticle 催化剂与 TiO2 相对照在紫外照耀下面展出更高催化的活动。这里的做的氮在 TiO2 格子的空隙的地点被定位，这被建议。

N-doped TiO2 nanoparticle photocatalysts were prepared through a sol-gel procedure using NH4C1 as the nitrogen source and followed by calcination at certain temperature. Systematic studies for the preparation parameters and their impact on the structure and photocatalytic activity under ultraviolet （UV） and visible light irra-diation were carried out. Multiple techniques （XRD, TEM, DRIF, DSC, and XPS） were commanded to characterize the crystal structures and chemical binding of N-doped TiO2. Its photocatalytic activity was examined by the deg- radation of organic compounds. The catalytic activity of the prepared N-doped TiO2 nanoparticles under visible light （λ〉400nm） irradiation is evidenced by the decomposition of 4-chlorophenol, showing that nitrogen atoms in the N-doped TiO2 nanoparticle catalyst are responsible for the visible light catalytic activity. The N-doped TiO2 nanoparticle catalyst prepared with this modified route exhibits higher catalytic activity under UV irradiation in contrast to TiO2 without N-doping. It is suggested that the doped nitrogen here is located at the interstitial site of TiO2 lattice.