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首页> 外文期刊>RSC Advances >In situ green oxidation synthesis of Ti3+ and N self-doped SrTiOxNy nanoparticles with enhanced photocatalytic activity under visible light
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In situ green oxidation synthesis of Ti3+ and N self-doped SrTiOxNy nanoparticles with enhanced photocatalytic activity under visible light

机译：原位绿色氧化合成Ti3 +和N自掺杂Srtioxny纳米粒子，可见光下的光催化活性增强

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摘要

A simple in situ green oxidation synthesis route was developed to prepare Ti3+ and N self-doped SrTiOxNy nanoparticles using TiN and H2O2 as precursors. X-ray diffraction (XRD), scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HRTEM) were used to characterize the crystallinity, structure and morphology. X-ray photoelectron spectroscopy (XPS) tests confirmed the presence of Ti3+ and N in the prepared SrTiOxNy nanoparticles. The resultant nanoparticles were shown to have strong absorption from 400 to 800 nm using UV-vis diffuse reflectance spectroscopy (UV-vis DRS). The formation mechanism of the Ti3+ and N self-doped SrTiOxNy nanoparticles was also discussed. Under visible light irradiation, the obtained Ti3+ and N self-doped samples showed higher photocatalytic activity for the degradation of the model wastewater, methylene blue (MB) solution. The most active sample T-130-Vac, obtained at 130 degrees C under vacuum, showed a 9.5-fold enhancement in the visible light decomposition of MB in comparison to the commercial catalyst nano-SrTiO3. The sample also showed a relatively high cycling stability for photocatalytic activity.
机译：开发了一种简单的原位绿色氧化合成途径，用于使用锡和H 2 O 2作为前体制备Ti3 +和N自掺杂Srtioxny纳米粒子。 X射线衍射（XRD），扫描电子显微镜（SEM）和高分辨率透射电子显微镜（HRTEM）用于表征结晶度，结构和形态学。 X射线光电子体光谱（XPS）试验证实了制备的SRTIOxNy纳米颗粒中的Ti3 +和N的存在。将所得纳米颗粒显示使用UV-Vis弥射反射光谱（UV-VIS DRS）的400至800nm具有很强的吸收。还讨论了Ti3 +和N自掺杂SRTIOxny纳米粒子的形成机制。在可见光照射下，所获得的Ti3 +和N自掺杂样品显示出较高的光催化活性，用于模型废水，亚甲基蓝（MB）溶液的降解。与商业催化剂纳米-SRTIO3相比，在真空下在130℃下获得的最活性样品T-130-VAC显示出9.5倍的MB的增强。该样品还显示出光催化活性的相对高的循环稳定性。

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  • 来源
    《RSC Advances》 |2018年第13期|共10页
  • 作者

    Liu Jiandong; Ma Xiaohong; Yang Lina; Liu Xingliang; Han Aixia; Lv Haitang; Zhang Chao; Xu Shiai;

  • 作者单位

    Qinghai Univ Sch Chem Engn Xining 810016 Qinghai Peoples R China;

    Qinghai Univ Sch Chem Engn Xining 810016 Qinghai Peoples R China;

    Qinghai Univ Sch Chem Engn Xining 810016 Qinghai Peoples R China;

    Qinghai Univ Sch Chem Engn Xining 810016 Qinghai Peoples R China;

    Qinghai Univ Sch Chem Engn Xining 810016 Qinghai Peoples R China;

    Qinghai Univ Sch Chem Engn Xining 810016 Qinghai Peoples R China;

    Qinghai Univ Sch Chem Engn Xining 810016 Qinghai Peoples R China;

    Qinghai Univ Sch Chem Engn Xining 810016 Qinghai Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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