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首页> 外文期刊>RSC Advances >Highly efficient photocatalytic performance of BiI/Bi2WO6 for degradation of tetracycline hydrochloride in an aqueous phase
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Highly efficient photocatalytic performance of BiI/Bi2WO6 for degradation of tetracycline hydrochloride in an aqueous phase

机译：BII / BI2WO6高效光催化性能，用于水相中盐酸四环素的降解

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A series of novel BiI/Bi _(2) WO _(6) nanosheets was successfully synthesized using a simple and efficient one-step hydrothermal method; the obtained specimens were subsequently characterized using X-ray diffraction, scanning electron microscopy, transmission electron microscopy, ultraviolet-visible spectrophotometry, X-ray photoelectron spectroscopy, N _(2) adsorption/desorption isotherms, Raman spectroscopy, ultraviolet-visible spectroscopy, Fourier-transform infrared spectroscopy, photoluminescence, and electronic impedance spectroscopy testing. The results indicated that the photocatalytic performance of the BiI/Bi _(2) WO _(6) composites for the degradation of tetracycline hydrochloride (TC) from aqueous media under visible light irradiation ( λ > 420 nm) was higher than that of pure Bi _(2) WO _(6) . The 0.8I-BiI/BWO composite (where 0.8 is the I?:?W molar ratio) presented the best photocatalytic performance of all analyzed specimens, and was able to degrade approximately 90% of the TC in 80 min. In addition, radical-capture experiments have demonstrated that superoxide anion radicals and hydroxyl radicals were the main active species for degrading organic pollutants, and a photocatalytic mechanism for the BiI/Bi _(2) WO _(6) system was proposed. This study not only provides a method for the simple preparation of BiI/Bi _(2) WO _(6) , but could also present important implications for ecological risk management and prevention against antibiotic pollution.
机译：一系列新的BII / BI _（2）WO _（6）纳米蛋白酶使用简单有效的一步水热法成功地合成;随后使用X射线衍射，扫描电子显微镜，透射电子显微镜，紫外 - 可见分光光度法，X射线光电子光谱，N _（2）吸附/解吸等温，拉曼光谱，紫外线可见光光谱，傅立叶 - 转化红外光谱，光致发光和电子阻抗光谱测试。结果表明，BII / BI _（2）WO _（6）复合材料的光催化性能用于从可见光照射（λ> 420nm）下水性介质的四环素盐酸盐（Tc）的脱盐（Tc）高于纯度Bi _（2）WO _（6）。 0.8I-BII / BWO复合物（其中0.8是I？：Δ：Δ：γ：ω：ω：摩尔比）呈现了所有分析的样本的最佳光催化性能，并且能够在80分钟内降解约90％的TC。此外，自由基 - 捕获实验表明，超氧化物阴离子自由基和羟基自由基是有机污染物降解的主要活性物质，并提出了BII / BI _（2）WO _（6）系统的光催化机制。这项研究不仅提供了简单准备BII / BI _（2）WO _（6）的方法，但也可能对生态风险管理和预防抗生素污染提出重要意义。

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