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Facile Synthesis of SnO 2 /SiC Nanosheets for Photocatalytic Degradation of MO
Journal of Inorganic and Organometallic Polymers and Materials ( IF 4 ) Pub Date : 2020-08-12 , DOI: 10.1007/s10904-020-01702-7
Taichao Zhang , Zhen Dai , Baoyan Liang , Yunchao Mu

Novel SnO2/SiC photocatalysts with nanosheet morphology were successfully fabricated by mechanical alloying and subsequent aging of SnCl2·2H2O, NH4HCO3, SiC, and 2-methylimidazole powders. The photocatalysts were mainly composed of SiC and SnO2. When the SiC content of the raw materials was higher, small amounts of Sn6O4(OH)4 also existed in the product. TEM results show that SiC nanocrystallines were well combined with SnO2 nanosheets. These SnO2/SiC photocatalysts showed good photocatalytic degradation efficiency to methyl orange (MO) under visible-light irradiation. The MO was rapidly reduced by 99% within 45 min by SiC/SnO2 composite. The excellent photocatalytic performance was mainly attributed to the formation of SnO2/SiC heterojunction, which reduced the recombination of photogenerated electrons and holes.



中文翻译:

SnO 2 / SiC纳米片的光催化降解MO的简便合成

通过机械合金化并随后老化SnCl 2 ·2H 2 O,NH 4 HCO 3,SiC和2-甲基咪唑粉末,成功地制备了具有纳米片形态的新型SnO 2 / SiC光催化剂。光催化剂主要由SiC和SnO 2组成。当原料中的SiC含量较高时,产物中也存在少量的Sn 6 O 4(OH)4。TEM结果表明,SiC纳米晶与SnO 2纳米片结合良好。这些锡2/ SiC光催化剂在可见光照射下对甲基橙(MO)表现出良好的光催化降解效率。SiC / SnO 2复合材料可在45分钟内将MO迅速降低99%。优异的光催化性能主要归因于SnO 2 / SiC异质结的形成,减少了光生电子与空穴的复合。

更新日期:2020-08-12
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