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

页码：422 / 430

页数：9

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