rGO/ZnSn(OH)6复合材料的合成及其光催化性能研究-《郑州大学学报(工学版)》

文章信息/Info

Title:: The Synthesis and Photocatalytic Properties of rGO-ZnSn(OH)6 Composite

Author(s):: Lu Hongxia; Li Xue Xue; Leijun; Zhao Tiange; Shao Gang; School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, Henan 450001

Keywords:: ZnSn(OH) 6; low temperature solution method; rGO-ZnSn(OH) 6; photocatalytic property

摘要:: 以(CH3COO)2Zn·2H2O、NaOH和SnCl4为主要原料,采用水热法合成粒径分布均匀、平均粒径为100 ～ 200 nm、分散性良好的ZnSn(OH)6微纳米立方体,并对羟基锡酸锌进行酸化处理;同时,通过改进的Hummers法制备氧化石墨烯(GO),在低温条件下制备了GO-ZnSn(OH)6复合材料,在紫外光照射条件下光致还原GO得到还原氧化石墨烯(rGO),最终得到rGO-ZnSn(OH)6复合材料.利用XRD、SEM、FT-IR、UV-Vis、PL分析了材料的物相、微观结构以及光吸收性能,并以亚甲基蓝为降解物质评价不同GO掺杂量对rGO-ZnSn(OH)6复合材料光催化性能的影响.结果表明,当GO的质量分数为2.0％时,rGO-ZnSn(OH)6复合材料的降解率达到最大值93.2％,降解速率常数k=0.026 min-1,分别是单一的ZnSn(OH)6的2倍和4.3倍.

Abstract:: ZnSn(OH) 6 microl nanocubes with good dispersancy,uniform particle size distribution,and the average particle size for micro/nanoscale (100 ～200nm) were prepared by the hydrothermal method using (CH3COO)2Zn · 2H2O,NaOH and SnCl4 as reactants,and the acidificate the Zinc hydroxysta treatment,graphene oxide(GO) was prepared by a modified Hummers method.GO-ZnSn(OH)6 composite was prepared under the condition of low temperature,reduction graphene oxide (rGO) was obtained by photo induced reduction of GO under UV irradiation,and finally get rGO-ZnSn(OH)6 composite.The samples were characterized by the XRD,SEM,FT-IR,UV-Vis and PL to analyze the phase,microstructure and optical absorption properties,and the effect of different amounts of GO dopant on the photocatalytic property of rGO-ZnSn (OH) 6 composite was also evaluated using methylence blue as the degradation of material.The results showed that the mass fraction of GO was 2.0 (massfraction,％),the maximum degradation rate of the rGO-ZnSn(OH)6 composite was 93.2％,the degradation rate constant k =0.026min-1,which was 2 times and 4.3 times of the pure ZnSn(OH) 6,respectively.