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Synthesis and characterizations of BiOCl nanosheets with controlled particle growth for efficient organic dyes degradation

机译:具有受控颗粒生长的BioCl纳米片的合成与表征高效有机染料降解

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In this report, we considered the control of electron-hole separation, oxygen vacancy formation, particle size, and morphology together is supposed to boost the catalytic activity of the materials. Hence, BiOCl photocatalysts were synthesized by a systematic control of particle growth along reactive (001) plane using simple hydrolysis method in KCl saturated aqueous solution with simultaneous UV light treatment. The materials were characterized using different techniques and the photocatalytic activities were evaluated for degradation of different kinds of organic dyes. 20-BiOCl prepared with 20 mmol KCl showed 99.9% RhB degradation within 10 min of visible light irradiation. From kinetics data, 20-BiOCl showed 7 and 3 times higher rates on RhB dye degradation than untreated 20-BiOCl and unsaturated 5-BiOCl, respectively. Furthermore, 20-BiOCI catalyst also exhibited almost complete degradation of RhB, MO, and MB dyes under UV light irradiation. Supper oxide (O-2 center dot(-)) and hydroxyl ((OH)-O-center dot) radicals are identified as the main active species on the degradation of RhB dye under visible light irradiation. Both KCl saturation and UV light treatment during synthesis of BiOCI catalysts play a crucial role to the extraordinary photocatlytic activities. (C) 2019 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
机译:在本报告中,我们认为控制电子空穴分离,氧气空位形成,粒度和形态,应该加强材料的催化活性。因此,通过在KCl饱和水溶液中使用简单的水解方法,通过同时UV光处理,通过沿着反应性(001)平面的颗粒生长的颗粒生长的系统控制来合成BioCl光催化剂。使用不同的技术表征材料,并评估光催化活性以降解不同种类的有机染料。用20mmol KCl制备的20-BioCl显示出在可见光照射10分钟内的99.9%的RHB降解。来自动力学数据,20-BioCl分别显示出比未处理的20-BioCl和不饱和5-BioCl的RHB染料降解率高的7和3倍。此外,在UV光照射下,20-生物催化剂也表现出几乎完全降解RHB,MO和MB染料的降解。晚间氧化物(O-2中心点( - ))和羟基((OH)-O中心点)被鉴定为在可见光照射下RHB染料降解的主要活性物质。在合成生物催化剂期间KCl饱和度和UV光处理在非凡的光粘性活动中起着至关重要的作用。 (c)2019年韩国工程化学学会。 elsevier b.v出版。保留所有权利。

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