Continuous Synthesis of Ag/AgCl/ZnO Composites Using Flow Chemistry and Photocatalytic Application
Continuous Synthesis of Ag/AgCl/ZnO Composites Using Flow Chemistry and Photocatalytic Application
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使用流动化学和光催化应用连续合成 Ag/AgCl/ZnO 复合材料
DOI：
10.1021/acs.iecr.7b05263
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发表时间：
2018-03-07
影响因子：
4.2
通讯作者：
Chen, Guangwen
中科院分区：
文献类型：
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作者：
Tao, Sha;Yang, Mei;Chen, Guangwen
在可见光照射下，利用连续微流控系统原位还原部分AgCl生成金属Ag，成功制备了Ag/AgCl/ZnO复合材料。Ag/AgCl/ZnO复合材料的形成被限制在小的水栓中，这些水栓被作为连续相的辛烷分散。以这种方式，实现了增强的混合、通道堵塞的低风险和均匀的光分布。表征结果表明，所制备的Ag/AgCl/ZnO复合材料由花状ZnO和镶嵌在其上的Ag/AgCl纳米球组成。结果表明，水/油体积流量比、总体积流量、温度、Zn 2 +/Ag+摩尔比等合成工艺参数对Ag/AgCl/ZnO复合材料的合成均有影响。此外，所制备的Ag/AgCl/ZnO复合材料在可见光驱动下对橙子的降解性能优于Ag/ZnO复合材料和AgCl/ZnO复合材料。
Ag/AgCl/ZnO composites were successfully synthesized in a continuous microfluidic system under visible light irradiation, which was employed in situ to reduce a portion of AgCl to metallic Ag. The formation of Ag/AgCl/ZnO composites was confined in small aqueous plugs, which were dispersed by octane as the continuous phase. In this way, enhanced mixing, low risk of channel clogging, and uniform light distribution were achieved. The characterization results revealed that the as-prepared Ag/AgCl/ZnO composites were composed of flowerlike ZnO with Ag/AgCl nanospheres anchored to them. It was found that the synthesis parameters such as water/oil volume flow ratio, total volume flow rate, temperature, and the molar ratio of Zn2+ to Ag+ had effects on the synthesis of Ag/AgCl/ZnO composites. Furthermore, the as-prepared Ag/AgCl/ZnO composites outperformed Ag/ZnO composites and AgCl/ZnO composites in the visible-light-driven degradation of methyl orange.