Gliding Arc Plasma Synthesis of Visible-Light Active C-Doped Titania Photocatalysts

被引：15
|
作者：
Liu, Shi-Xin [1 ]
Liu, Jing-Lin [1 ]
Li, Xiao-Song [1 ]
Zhu, Xiaobing [1 ]
Zhu, Ai-Min [1 ]
机构：
[1] Dalian Univ Technol, Ctr Hydrogen Energy & Liquid Fuels, Lab Plasma Phys Chem, Dalian 116024, Peoples R China
来源：
PLASMA PROCESSES AND POLYMERS | 2015年 / 12卷 / 05期
基金：
中国国家自然科学基金;
关键词：
plasma; powder; synthesis; TiO2; visible-light photocatalyst; CHEMICAL-VAPOR-DEPOSITION; TIO2; PHOTOCATALYSTS; SENSITIVE PHOTOCATALYST; METHYLENE-BLUE; CODOPED TIO2; CARBON; DEGRADATION; DIOXIDE; WATER; XPS;
D O I：
10.1002/ppap.201400158
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Gliding arc plasma is explored to synthesize C-doped TiO2 photocatalysts via tuning the ratio of O-2 to titanium tetraisopropoxide (TTIP) for the first time. XRD and HRTEM characterizations confirm that the samples synthesized at O-2/TTIP >= 18 are highly crystalline. When the O-2/TTIP ratio ranges from 18 to 36, the as-synthesized samples with similar to 70% of the weight fraction of anatase, 40-50m(2) g(-1) of specific surface area and similar to 2.7 eV of band energy gap, do show a greatly enhanced visible-light absorption and high activity for methylene blue (MB) degradation under visible-light irradiation (lambda > 420 nm). The gray sample synthesized at O-2/TTIP = 27 has the largest relative content of Ti3+ and oxygen vacancy (square) (Ti3+/square/Ti = 0.7/0.35/1) and exhibits the highest visible-light activity.
引用
收藏
页码：422 / 430
页数：9
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