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首页> 外文期刊>RSC Advances >The structure and self-regeneration performance of Salix psammophila-activated carbon modified by Ag and N co-doped TiO2
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The structure and self-regeneration performance of Salix psammophila-activated carbon modified by Ag and N co-doped TiO2

机译：AG和N掺杂TiO2改性Salix Psammophila活性炭的结构和自再生性能

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摘要

In this study, Salix psammophila activated carbon (AC) was modified by immersing it in an AgNO _(3) solution and coating it with an N-doped TiO _(2) film to improve its self-regeneration performance in visible light. Ag ~(+) was adsorbed and reduced to Ag nanoparticles by AC. Ti element only existed as Ti ~(4+) , and N element was incorporated into TiO _(2) mainly in the form of interstitial nitrogen. The photodegradation of Ag-N-TiO _(2) -AC (AC coated with Ag and N co-modified TiO _(2) ) was enhanced under visible light irradiation because of its three inherent structures: (1) Ag and N co-modified TiO _(2) had a smaller average crystal size; (2) with a low bandgap (1.59 eV), the photoresponse region of Ag and N co-modified TiO _(2) was greatly extended; (3) the lifetime of the photogenerated holes was increased. With the increase in the AgNO _(3) dosage, the Ag-N-TiO _(2) -AC photodegradation increased, while its adsorption decreased. Because of these synergistic effects, 0.05Ag-0.1N-TiO _(2) -AC (where 0.05 is the dosage of AgNO _(3) , g) presented the best self-regeneration performance under visible light irradiation.
机译：在该研究中，通过将其浸入AgNO _（3）溶液中并用N掺杂的TiO _（2）膜涂覆，改变Salix psammophila活性炭（Ac），以改善其可见光的自再生性能。通过AC吸附并将Ag〜（+）吸附并降至Ag纳米颗粒。 Ti元素仅存为Ti〜（4+），N个元素主要以间质氮的形式掺入TiO _（2）中。在可见光照射下，Ag-N-TiO _（2）-Ac（2）-Ac（涂覆有Ag和N共改性TiO _（2））的光降解，因为其三种固有的结构：（1）AG和N CO制定的TiO _（2）具有较小的平均晶体尺寸; （2）具有低带隙（1.59eV），Ag和N共改性TiO _（2）的光响应区域大大延伸; （3）上升光孔的寿命增加。随着Agno _（3）剂量的增加，Ag-n-TiO _（2）-Ac光降解增加，而其吸附降低。由于这些协同效应，0.05Ag-0.1N-TiO _（2）-Ac（其中0.05是Agno _（3），g）在可见光照射下呈现最佳的自再生性能。

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