不同暴露比例(001)晶面锐钛矿相TiO_2纳米方块的合成及气敏性能  

Synthesis and Gas Sensing Properties of Anatase TiO_2 Nanocubes with Different Exposure Ratios(001) Facet

作　　者：王伟超 杜继星 刘现收[1] 谢海峰 WANG Weichao, DU Jixing, LIU Xianshou, XIE Haifeng(Northwest Institute of Nuclear Technology, Xi’an 71002)

机构地区：[1]西北核技术研究所,西安710024

出　　处：《材料导报》2018年第A01期160-163,共4页Materials Reports

摘　　要：在众多提高TiO_2气敏性能的尝试中,晶面调控的方法引起了极大的关注。主要通过调整水热反应的制备工艺,实现TiO_2的(001)晶面暴露不同比例,对其进行气敏性能的研究。通过改变反应物浓度完成了一系列不同晶面暴露比的TiO_2纳米方块的可控水热合成,实现了对TiO_2纳米方块形貌以及晶面的调控。合成TiO_2纳米方块暴露(001)晶面的比例从33.33%增加到83.33%。随(001)晶面暴露比例的提高,对于丙酮气体的灵敏度从14.3提高到了27.8。Recently,some papers have reported that different crystal face of TiO2 has a great impact on the gas sensor property.Herine,we prepared different ratio of（001）crystal face for TiO2 through adjusting the hydrothermal reaction parameters and explored the gas sensor properties.The final results confirmed that（001）crystal face of TiO2 play a vital role on the sensor property.Different morphology and crystal face of TiO2 can be controlly synthesized by adjusting the reactant concentration and reaction time.The results prove that the gas sensitivity for acetone will enhance（14.3 to 27.8）with the incease of the exposue ratio of（001）facet（33.33%to 83.33%）.

关 键 词：TIO2 气敏性能 (001)晶面 水热反应 

分 类 号：TB31[一般工业技术—材料科学与工程]