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Efficient photocatalytic degradation of phenol in aqueous solution by SnO2:Sb nanoparticles

机译：SnO2：Sb纳米粒子对水溶液中苯酚的光催化降解

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摘要

Photodegradation of phenol in the presence of tin dioxide (SnO2) nanoparticles under UV light irradiation is known to be an effective photocatalytic process. However, phenol degradation under solar light is less effective due to the large band gap of SnO2. In this study antimony (Sb) doped tin dioxide (SnO2) nanoparticles were prepared at a low temperature (80 degrees C) by a sol-gel method and studied for its photo catalytic activity with phenol as a test contaminant. The catalytic degradation of phenol in aqueous media was studied using high performance liquid chromatography and total organic carbon measurements. The change in the concentration of phenol affects the pH of the solution due to the by-products formed during the photo-oxidation of phenol. The photoactivity of SnO2:Sb was found to be a maximum for 0.6 wt.% Sb doped SnO2 nanoparticles with 10 mg L-1 phenol in water. Within 2 h of photodegradation, more than 95% of phenol could be removed under solar light irradiation. (C) 2016 Elsevier B.V. All rights reserved.
机译：已知在紫外线照射下，在二氧化锡（SnO2）纳米粒子存在下，苯酚的光降解是有效的光催化过程。但是，由于SnO2的带隙大，在日光下苯酚的降解效果不佳。在这项研究中，通过溶胶-凝胶法在低温（80摄氏度）下制备了掺杂锑（Sb）的二氧化锡（SnO2）纳米颗粒，并研究了以苯酚为测试污染物的光催化活性。使用高效液相色谱和总有机碳测量研究了苯酚在水性介质中的催化降解。由于苯酚的光氧化过程中形成的副产物，苯酚浓度的变化会影响溶液的pH值。发现SnO2：Sb的光活性在水中掺有10 mg L-1苯酚的0.6 wt。％Sb掺杂的SnO2纳米颗粒最大。在光降解的2小时内，在太阳光照射下可以去除95％以上的苯酚。 （C）2016 Elsevier B.V.保留所有权利。

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  • 来源
    《Applied Surface Science》 |2016年第may1期|229-236|共8页
  • 作者

    Al-Hamdi Abdullah M.; Sillanpaa Mika; Bora Tanujjal; Dutta Joydeep;

  • 作者单位

    Lappeenranta Univ Technol, Lab Green Chem, Sammonkatu 12, Mikkeli 50130, Finland|Sultan Qaboos Univ, Dept Chem, POB 17, Al Khoud 123, Oman|Sultan Qaboos Univ, Water Res Ctr, Chair Nanotechnol, POB 17, Al Khoud 123, Oman;

    Lappeenranta Univ Technol, Lab Green Chem, Sammonkatu 12, Mikkeli 50130, Finland;

    Sultan Qaboos Univ, Water Res Ctr, Chair Nanotechnol, POB 17, Al Khoud 123, Oman;

    Sultan Qaboos Univ, Water Res Ctr, Chair Nanotechnol, POB 17, Al Khoud 123, Oman|KTH Royal Inst Technol, Funct Mat Div, ICT, Isafjordsgatan 22, SE-16440 Kistastockholm, Sweden;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Tin dioxide nanoparticles; Phenol degradation; Photocatalysis; Antimony; Doping;

    机译：二氧化锡纳米粒子苯酚降解光催化锑掺杂。;

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