A green hydrothermal synthesis route to prepare a porous nickel doped titanium dioxide (Ni–TiO₂) nanostructured photocatalyst has been developed in this research. The results show that Ni doping can greatly increase the visible light photocatalytic performance of TiO₂ through the introduction of impurity bands in the band gap of TiO₂. After 5 cycles of reuse, Ni–TiO₂ nanoparticles still show stable photocatalytic activity for MB degradation. The Ni–TiO₂ nanoparticles developed in the present study are expected to have great potential applications in wastewater treatment due to the advantages of strong visible light photocatalytic performance, a simple synthetic process and high cycle utilization performance.

中文翻译：

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具有改进的可见光光催化活性的多孔镍掺杂二氧化钛纳米粒子

本研究开发了一种制备多孔镍掺杂二氧化钛（Ni-TiO _{2 ）纳米结构光催化剂的绿色水热合成路线。}结果表明，Ni掺杂可以通过在TiO 2 带隙中引入杂质带，大大提高TiO 2 的可见光_光催化_性能。经过 5 次重复使用后，Ni-TiO ₂纳米粒子仍表现出稳定的光催化降解 MB 活性。本研究开发的Ni-TiO ₂纳米颗粒具有可见光光催化性能强、合成工艺简单、循环利用性能高等优点，有望在废水处理中具有巨大的应用潜力。