Synthesis of vanadium pentoxide nanoneedles by physical vapour deposition and their highly sensitive behavior towards acetone at room temperature

被引：39

作者：

Hakim, Shah Abdul ^{[1
]}

Liu, Yueli ^{[1
]}

Zakharova, Galina S. ^{[2
]}

Chen, Wen ^{[1
]}

机构：

[1] Wuhan Univ Technol, Sch Mat Sci & Engn, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China

[2] Russian Acad Sci, Ural Branch, Inst Solid State Chem, Ekaterinburg 620990, Russia

来源：

RSC ADVANCES | 2015年 / 5卷 / 30期

关键词：

GAS SENSORS; ETHANOL; AMMONIA; BREATH; TIO2; ADSORPTION; NANOWIRES; OXIDATION; CATALYSTS; PROPANE;

D O I：

10.1039/c4ra16564k

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

V2O5 nanoneedles were synthesized using a facile physical vapour deposition approach. The XRD patterns confirmed the good crystallinity of the as prepared nanoneedles. The chemical states of the V2O5 nanoneedles were confirmed through XPS analysis. Gas sensor based on the V2O5 nanoneedles was investigated for four types of gases (acetone, ammonia, ethanol and propylamine) at room temperature. A high reproducible response and a good selective behavior towards acetone were observed in both low and high concentration zones with a low detection limit of 941 ppb, which was explained on the basis of the energy band model. A sensing mechanism has also been suggested.

引用

收藏

页码：23489 / 23497

页数：9

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