Preparation of Carbon-Doped TiO2 Nanopowder Synthesized by Droplet Injection of Solution Precursor in a DC-RF Hybrid Plasma Flow System
Preparation of Carbon-Doped TiO2 Nanopowder Synthesized by Droplet Injection of Solution Precursor in a DC-RF Hybrid Plasma Flow System
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DOI：
10.1007/s11666-013-9941-8
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发表时间：
2013-08-01
影响因子：
3.1
通讯作者：
Nishiyama, Hideya
中科院分区：
文献类型：
--
作者：
Jang, Juyong;Takana, Hidemasa;Nishiyama, Hideya
碳掺杂二氧化钛纳米粉体由于其较高的光催化性能而受到广泛关注，其实际上不仅被紫外光激活，而且被可见光照射激活。在本研究中，C-TiO 2纳米粉末的合成通过液滴注射的溶液前驱体在DC-RF混合等离子体流动系统，导致更高的光催化性能，即使在可见光照射下。飞行中的C-TiO 2纳米粒子与等离子体流中的高浓度碳反应，然后沉积在该系统的上游和下游区域的两个石英管的表面上。收集的C-TiO 2纳米粉末含有锐钛矿-金红石混合相TiO 2和TiC，其含量取决于粉末收集的位置、温度和等离子体处理的持续时间。高功能的C-TiO 2纳米粉末收集在下游区域表现出更高的降解率的亚甲基蓝比单相的TiO 2，即使在可见光照射下，尽管是TiC。
Carbon-doped titanium dioxide nanopowder has received much attention because of its higher photocatalytic performance, which is practically activated not only by UV, but also by visible light irradiation. In the present study, C-TiO2 nanopowder was synthesized by droplet injection of solution precursor in a DC-RF hybrid plasma flow system, resulting in higher photocatalytic performance even under visible light irradiation. In-flight C-TiO2 nanoparticles reacted with the high concentration of carbon in plasma flow and were then deposited on the surfaces of two quartz tubes in the upstream and downstream regions of this system. The collected C-TiO2 nanopowder contained anatase-rutile mixed-phase TiO2 and TiC, the contents of which depended on the location of the powder collection, the temperature, and the duration of plasma treatment. Highly functional C-TiO2 nanopowder collected in the downstream region exhibited a higher degradation rate of methylene blue than that of single-phase anatase TiO2, even under visible light irradiation, in spite of being TiC.