Wide band gap p-type nanocrystalline CuBO2 as a novel UV photocatalyst
Wide band gap p-type nanocrystalline CuBO2 as a novel UV photocatalyst
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DOI：
10.1016/j.materresbull.2013.03.034
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发表时间：
2013-07
影响因子：
5.4
通讯作者：
S. Santra;N. S. Das;K. Chattopadhyay
中科院分区：
文献类型：
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作者：
S. Santra;N. S. Das;K. Chattopadhyay
采用溶胶-凝胶法合成了不同粒径的宽禁带铜基铜铁矿CuBO 2纳米晶粉末。使用X射线衍射（XRD）和透射电子显微镜（TEM），证实了良好的结晶度和适当的相形成的样品进行结构表征。成分分析进行了能量色散X射线研究（EDX），而场发射扫描电子显微镜显示的样品的形态信息。首次采用标准光催化装置研究了铜铁矿材料的光催化性能，发现其光催化效率随着粒径的减小而增加。的朗缪尔-欣谢尔伍德光催化速率常数显着增加，在不同的pH值从2.75到0.5合成的样品，最终改变粒径。首次发现的高效光催化性能将使这种新型p型宽带隙半导体成为真正的多功能材料。
Wide band gap copper based delafossite CuBO2nanocrystalline powders of different particle sizes were synthesized via sol–gel route. Structural characterization was performed using X-ray diffraction (XRD) and transmission electron microscopy (TEM) which confirmed good crystallinity and proper phase formation of the samples. Compositional analysis was carried out by energy dispersive X-ray studies (EDX), whereas field emission scanning electron microscopy revealed morphological information of the samples. The photocatalytic performance of this delafossite material was studied for the first time with a standard photocatalytic set-up and the photocatalytic efficiency was found to increase with decreasing particle size. The Langmuir–Hinshelwood photocatalytic rate constants increased considerably for the samples synthesized at different pH from 2.75 to 0.5; which eventually varied particle size. The efficient photocatalytic performance, found for the first time here, will make this novel p-type wide band gap semiconductor a truly multifunctional material.