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首页> 外文期刊>Chemistry: A European journal >Template-free fabrication of Bi_2O_3 and (BiO) _2CO_3 nanotubes and their application in water treatment
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Template-free fabrication of Bi_2O_3 and (BiO) _2CO_3 nanotubes and their application in water treatment

机译：Bi_2O_3和（BiO）_2CO_3纳米管的无模板制备及其在水处理中的应用

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Uniform bismuth oxide (Bi_2O_3) and bismuth subcarbonate ((BiO)_2CO_3) nanotubes were successfully synthesized by a facile solvothermal method without the need for any surfactants or templates. The synergistic effect of ethylene glycol (EG) and urea played a critical role in the formation of the tubular nanostructures. These Bi _2O_3 and (BiO)_2CO_3 nanotubes exhibited excellent Cr~(VI)-removal capacity. Bi_2O _3 nanotubes, with a maximum Cr~(VI)-removal capacity of 79mg g~(-1), possessed high removal ability in a wide range of pH values (3-11). Moreover, Bi_2O_3 and (BiO)_2CO _3 nanotubes also displayed highly efficient photocatalytic activity for the degradation of RhB under visible-light irradiation. This work not only demonstrates a new and facile route for the fabrication of Bi_2O_3 and (BiO)_2CO_3 nanotubes, but also provides new promising adsorbents for the removal of heavy-metal ions and potential photocatalysts for environmental remediation. Uniform Bi_2O _3 and (BiO)_2CO_3 nanotubes were synthesized by a solvothermal method without involving any surfactants or templates. The synergistic effect of ethylene glycol and urea played a critical role in the formation of the tubular structure. The Bi_2O_3 and (BiO)_2CO_3 nanostructures not only exhibited excellent Cr~(VI)-removal capacity, but also displayed high photocatalytic efficiency for the degradation of Rhodaine B under visible-light irradiation (see figure).
机译：通过简便的溶剂热法成功合成了均匀的氧化铋（Bi_2O_3）和碱式碳酸铋（（BiO）_2CO_3）纳米管，无需使用任何表面活性剂或模板。乙二醇（EG）和尿素的协同作用在管状纳米结构的形成中起关键作用。这些Bi _2O_3和（BiO）_2CO_3纳米管表现出优异的Cr〜（VI）去除能力。 Bi_2O _3纳米管的最大Cr〜（VI）去除能力为79mg g〜（-1），在宽的pH值范围内（3-11）具有很高的去除能力。此外，Bi_2O_3和（BiO）_2CO_3纳米管在可见光照射下对RhB的降解也显示出高效的光催化活性。这项工作不仅证明了Bi_2O_3和（BiO）_2CO_3纳米管的制备的新途径，而且为去除重金属离子和潜在的光催化剂提供了新的有前途的吸附剂，可用于环境修复。通过溶剂热法合成均匀的Bi_2O_3和（BiO）_2CO_3纳米管，不涉及任何表面活性剂或模板。乙二醇和尿素的协同作用在管状结构的形成中起关键作用。 Bi_2O_3和（BiO）_2CO_3纳米结构不仅表现出优异的Cr〜（VI）去除能力，而且在可见光照射下对Rhodaine B的降解表现出很高的光催化效率（见图）。

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