Vertically Ordered Hematite Nanotube Array as an Ultrasensitive and Rapid Response Acetone Sensor

被引：82

作者：

Kim, Do Hong ^{[1
,2
]}

Shim, Young-Seok ^{[1
]}

Jeon, Jong-Myeong ^{[1
]}

Jeon, Hu Young ^{[3
]}

Park, Sung Soo ^{[4
]}

Kim, Young-Woon ^{[1
]}

Rim, Jin-Sang ^{[5
]}

Lee, Jong-Heun ^{[2
]}

Jang, Ho Won ^{[1
]}

机构：

[1] Seoul Natl Univ, Res Inst Adv Mat, Dept Mat Sci Engn, Seoul 151744, South Korea

[2] Korea Univ, Dept Mat Sci Engn, Seoul 136713, South Korea

[3] Ulsan Natl Inst Sci & Technol, UCRF, Ulsan 689798, South Korea

[4] Ulsan Natl Inst Sci & Technol, Sch Mat Sci & Engn, Ulsan 689798, South Korea

[5] Korea Inst Sci & Technol, Elect Mat Res Ctr, Seoul 136791, South Korea

来源：

ACS APPLIED MATERIALS & INTERFACES | 2014年 / 6卷 / 17期

基金：

新加坡国家研究基金会;

关键词：

hematite; nanotube array; acetone sensor; earth abundant; ultrasensitive; GAS-SENSING PROPERTIES; HYDROTHERMAL SYNTHESIS; GROWTH-MECHANISM; ALPHA-FE2O3; TRANSPARENT; PERFORMANCE;

D O I：

10.1021/am504156w

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Vertically ordered nanotube array is a desirable configuration to improve gas sensing properties of the hematite which is the most abundant and cheapest metal oxide semiconductor on earth but has low and sluggish chemiresistive responses. We have synthesized a vertically aligned, highly ordered hematite nanotube array directly on a patterned SiO2/Si substrate and then it used as a gas sensor without additional processing. The nanotube array sensor shows unprecedentedly ultrahigh and selective responses to acetone with detection limits down to a few parts per billion and response time shorter than 3 s.

引用

页码：14779 / 14784

页数：6

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