Visible-Light Photocatalytic Removal of NO in Air over BiOX (X = Cl, Br, I) Single-Crystal Nanoplates Prepared at Room Temperature
Visible-Light Photocatalytic Removal of NO in Air over BiOX (X = Cl, Br, I) Single-Crystal Nanoplates Prepared at Room Temperature
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室温下制备的 BiOX（X = Cl、Br、I）单晶纳米板可见光催化去除空气中的 NO
DOI：
10.1021/ie400615f
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发表时间：
2013-05
期刊：
影响因子：
--
通讯作者：
Dong, Fan
中科院分区：
文献类型：
--
作者：
Zhang, Wendong;Zhang, Qin;Dong, Fan
采用一种简单、低成本的方法在室温下合成了结晶良好的层状二维卤氧化铋（BiOX; X = Cl，Br，I）单晶纳米片。合成的样品进行了分析，通过各种表征技术。在可见光照射下，以室内空气中NO的去除率为指标，评价了样品的光催化活性。卤氧化铋的禁带宽度和热稳定性随X原子序数的增加而降低。合成的BiOBr纳米片具有最高的光催化活性，由于有利因素的纳米片，层状结构，相对较高的表面积，和合适的能带结构，超过了BiOCl和BiOI。该研究为低温制备和选择合适的可见光催化剂提供了新的思路。
Well-crystallized layered two-dimensional bismuth oxyhalide (BiOX; X = Cl, Br, I) single-crystal nanoplates were synthesized via a facile and low-cost method at room temperature. The as-synthesized samples were analyzed by various characterization techniques. The photocatalytic activity of the samples was evaluated by the removal of NO at the indoor air level under visible-light irradiation. The band gap and thermal stability of bismuth oxyhalides decreased with increased X atomic numbers. The as-synthesized BiOBr nanoplates exhibited highest photocatalytic activity due to the favorable factors of ultrathin nanoplates, layered structures, relatively high surface area, and suitable band structure, exceeding that of BiOCl and BiOI. The present work could provide new insight into the low-temperature preparation and appropriate selection of visible-light photocatalysts for environmental application.
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