Platinum dioxide activated porous SnO2 microspheres for the detection of trace formaldehyde at low operating temperature

被引：20

作者：

He, Yi ^{[1
]}

Li, Huihui ^{[1
]}

Zou, Xiaoxin ^{[1
]}

Bai, Ni ^{[2
]}

Cao, Yanying ^{[1
]}

Cao, Yang ^{[1
]}

Fan, Meihong ^{[1
]}

Li, Guo-Dong ^{[1
]}

机构：

[1] Jilin Univ, Coll Chem, Int Joint Res Lab Nano Micro Architecture Chem, State Key Lab Inorgan Synth & Preparat Chem, Qjanjin St, Changchun 130012, Peoples R China

[2] Jiangsu Univ Sci & Technol, Sch Mech & Met Engn, Zhangjiagang 215600, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2017年 / 244卷

关键词：

Gas sensor; PtO2; SnO2; Formaldehyde; GAS-SENSING PROPERTIES; ROOM-TEMPERATURE; GASEOUS FORMALDEHYDE; SELECTIVE DETECTION; SENSOR; HYDROGEN; PERFORMANCE; NANOPARTICLES; OXIDATION; CATALYSTS;

D O I：

10.1016/j.snb.2017.01.014

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Great efforts have been devoted on the detection of the volatile organic compounds indoor for human health. The detection of formaldehyde is one of the most important and popular issues for the wide usage of formaldehyde and its toxic. However, it is a challenge to monitor trace gaseous formaldehyde at lower working temperature. Herein, we present a sensor with a significantly improved sensing response and dramatically decreased operating temperature based on porous PtO(2)w/SnO2 microspheres. And the PtO2/SnO2-5 mol% composite shows the most outstanding sensing performance among all products. What's more, the above sensor can detect gaseous formaldehyde in the ppb level (100 ppb) at low operating temperature (100 degrees C). The excellent sensing performance should be attributed to the high catalytic activity of PtO2 nanoparticles decorated on the surface of SnO2 microspheres and the porosity of the composite. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：475 / 481

页数：7

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