中文摘要：

做氮的 HTiNbO5 nanosheets 被第一 exfoliating 成功地综合了在 tetrabutylammonium 氢氧化物(TBAOH ) 到的分层的 HTiNbO5 获得 HTiNbO5 nanosheets 然后与脲加热 nanosheets。产生样品被 X 光检查描绘衍射(XRD ) ，传播电子显微镜学(TEM ) ，扫描电子显微镜学(SEM ) ，精力散的 X 光检查(EDX ) ， X 光检查光电子光谱学(XPS ) ，紫外力的光谱学和 N2 吸附解吸附作用大小。在分层的结构，内在的 bandgap 变窄和可见轻回答的高得多的 thermostability 结果，被发现那做 N。做的氮原子主要位于 TiNbO5 lamellae 的空隙的地点并且化学上跳了到氢离子。与做 N 的 HTiNbO5 相比，做 N 的 HTiNbO5 nanosheets 由于 titanoniobate nanosheets 的相当松开、不规则的安排有一个大得多的特定的表面区域和更富有的 mesoporosity。做 N 的分层的 HTiNbO5 和 HTiNbO5 nanosheets 为玫瑰精 B (RhB ) 的降级显示出一项很高可见光的 photocatalytic 活动水的答案。而且由于更加更大的表面区域，更富有的 mesoporosity 和更强壮的酸味，做 N 的 HTiNbO5 nanosheets 比做 N 的 HTiNbO5 举办了一项甚至更高的活动，尽管后者在可见区域有更强壮的吸收。染料分子主要被降级到脂肪族的有机化合物并且部分使矿物化到 CO2 或公司，而非简单地被将脱色。photosensitization 的效果是不足道的， RhB 主要经由典型 photocatalytic 反应线路被降级。为在在做 N 的 HTiNbO5 nanosheets 上的可见轻照耀下面的 RhB 的 photodegradation 的二条不同反应线路被建议了。现在的方法能被扩大到有置闰和脱落的特征的很多分层的金属氧化物，因此为高度有效、潜在地实际的可见光的光催化剂的制造提供新机会。

英文摘要：

Nitrogen-doped HTiNbO5 nanosheets have been successfully synthesized by first exfoliating layered HTiNbO5 in tetrabutylammonium hydroxide （TBAOH） to obtain HTiNbO5 nanosheets and then heating the nanosheets with urea. The resulting samples were characterized by X-ray diffraction （XRD）, transmission electron microscopy （TEM）, scanning electron microscopy （SEM）, energy-dispersive X-ray （EDX）, X-ray photoelectron spectroscopy （XPS）, UV-vis spectroscopy and N2 adsorption-desorption measurements. It was found that N-doping resulted in a much higher thermostability of the layered structure, intrinsic bandgap narrowing and a visible light response. The doped nitrogen atoms were mainly located in the interstitial sites of TiNbOs- lamellae and chemically bound to hydrogen ions. Compared with N-doped HTiNbOs, N-doped HTiNbO5 nanosheets had a much larger specific surface area and richer mesoporosity due to fee rather loose and irregular arrangement of fitanoniobate nanosheets. Both N-doped layered HTiNbOs and HTiNbO5 nanosheets showed a very high visible-light photocatalytic activity for the degradation of rhodamine B （RhB） aqueous solution. Moreover, due to the considerably larger surface area, richer mesoporosity and stronger acidity, N-doped HTiNbO5 nanosheets had an even higher activity than N-doped HTiNbOs, although the latter had a stronger absorption in the visible region. The dye molecules were mainly degraded to aliphatic organic compounds and partially mineralized to CO2 and/or CO, rather than being simply decolorized. The effect of photosensitization was insignificant and RhB was degraded mainly via the typical photocatalytic reaction routes. Two different reaction routes for the photodegradation of RhB under visible light irradiation over N-doped HTiNbO5 nanosheets have been proposed. The present method can be extended to a large number of layered metal oxides that have the characteristics of intercalation and exfoliation, thus providing new opportunities for the fabrication of highly