Hydrothermal synthesis and gas-sensing properties of ultrathin hexagonal ZnO nano sheets

被引：72

作者：

Guo, Weiwei ^{[1
]}

Fu, Min ^{[1
]}

Zhai, Chongzhi ^{[2
]}

Wang, Zhongchang ^{[3
]}

机构：

[1] Chongqing Technol & Business Univ, Coll Environm & Biol Engn, Chongqing Key Lab Urban Atmospher Environm Compre, Chongqing 400067, Peoples R China

[2] Chongqing Environm Sci Res Inst, Chongqing 400067, Peoples R China

[3] Tohoku Univ, Adv Inst Mat Res, WPI Res Ctr, Sendai, Miyagi 9808577, Japan

来源：

CERAMICS INTERNATIONAL | 2014年 / 40卷 / 01期

关键词：

D; ZnO; Crystal growth; Nanosheet; Formaldehyde; Gas sensors; FLOWER-LIKE; NANOSTRUCTURES; SENSITIVITY; SENSORS; GROWTH; ARRAYS;

D O I：

10.1016/j.ceramint.2013.07.150

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Gas-sensing performances are often enhanced significantly.once size of the sensing materials approaches a critical value of 15 nm. Here, we synthesize, by a simple hydrothermal method, ultrathin hexagonal ZnO nanosheets with a thickness of 17 nm. The cetyltrimethylammonium bromide is found to play a critical role in producing such unique hexagonal ZnO nanosheets, and a possible growth mechanism is proposed. The as-prepared ultrathin nanosheets exhibit excellent gas-sensing properties to formaldehyde gas at optimal temperature of 350 degrees C under concentration of 50 ppm, rendering the ultrathin nanosheets promising for the on-site detection of formaldehyde. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：2295 / 2298

页数：4

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