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Enhanced Gas-Sensing Properties for Trimethylamine at Low Temperature Based on MoO3/Bi2Mo3O12 Hollow Microspheres
被引:80
作者:

Zhang, Fangdou
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Heilongjiang Univ, Key Lab Funct Inorgan Mat Chem, Minist Educ, Sch Chem & Mat Sci, Harbin 150080, Heilongjiang, Peoples R China Heilongjiang Univ, Key Lab Funct Inorgan Mat Chem, Minist Educ, Sch Chem & Mat Sci, Harbin 150080, Heilongjiang, Peoples R China

Dong, Xin
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Heilongjiang Univ, Key Lab Funct Inorgan Mat Chem, Minist Educ, Sch Chem & Mat Sci, Harbin 150080, Heilongjiang, Peoples R China Heilongjiang Univ, Key Lab Funct Inorgan Mat Chem, Minist Educ, Sch Chem & Mat Sci, Harbin 150080, Heilongjiang, Peoples R China

Cheng, Xiaoli
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Heilongjiang Univ, Key Lab Funct Inorgan Mat Chem, Minist Educ, Sch Chem & Mat Sci, Harbin 150080, Heilongjiang, Peoples R China Heilongjiang Univ, Key Lab Funct Inorgan Mat Chem, Minist Educ, Sch Chem & Mat Sci, Harbin 150080, Heilongjiang, Peoples R China

Xu, Yingming
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Heilongjiang Univ, Key Lab Funct Inorgan Mat Chem, Minist Educ, Sch Chem & Mat Sci, Harbin 150080, Heilongjiang, Peoples R China Heilongjiang Univ, Key Lab Funct Inorgan Mat Chem, Minist Educ, Sch Chem & Mat Sci, Harbin 150080, Heilongjiang, Peoples R China

Zhang, Xianfa
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Heilongjiang Univ, Key Lab Funct Inorgan Mat Chem, Minist Educ, Sch Chem & Mat Sci, Harbin 150080, Heilongjiang, Peoples R China Heilongjiang Univ, Key Lab Funct Inorgan Mat Chem, Minist Educ, Sch Chem & Mat Sci, Harbin 150080, Heilongjiang, Peoples R China

Huo, Lihua
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Heilongjiang Univ, Key Lab Funct Inorgan Mat Chem, Minist Educ, Sch Chem & Mat Sci, Harbin 150080, Heilongjiang, Peoples R China Heilongjiang Univ, Key Lab Funct Inorgan Mat Chem, Minist Educ, Sch Chem & Mat Sci, Harbin 150080, Heilongjiang, Peoples R China
机构:
[1] Heilongjiang Univ, Key Lab Funct Inorgan Mat Chem, Minist Educ, Sch Chem & Mat Sci, Harbin 150080, Heilongjiang, Peoples R China
基金:
对外科技合作项目(国际科技项目);
中国国家自然科学基金;
关键词:
MoO3/Bi2Mo3O12 hollow microspheres;
heterostructure;
low temperature;
TMA sensing property;
gas-sensing mechanism;
PPB-LEVEL H2S;
SENSITIVE DETECTION;
THIN-FILM;
HETEROSTRUCTURE;
BI2MOO6;
SENSORS;
PERFORMANCE;
NANOBELTS;
COMPOSITE;
HETEROJUNCTION;
D O I:
10.1021/acsami.8b22132
中图分类号:
TB3 [工程材料学];
学科分类号:
0805 ;
080502 ;
摘要:
Most reported trimethylamine (TMA) sensors have to operate at high temperature, which will consume energy highly. To detect TMA at low temperature, it is necessary to modify the existing materials or develop new materials. In this paper, the sensor based on MoO3/Bi2Mo3O12 hollow microspheres can work at low operating temperature of 170 degrees C, which were prepared via a simple solvothermal route. The phase and morphology of the product were characterized by an X-ray diffraction meter, a scanning electron microscope and a transmission electron microscope. The surface chemistry of the MoO3/Bi2Mo3O12 sensor was studied with an X-ray photoelectron spectroscope to investigate the TMA sensing mechanism. The MoO3/Bi2Mo3O12 sensor (S = 25.8) had a higher response to SO ppm TMA than those of MoO3 hollow spheres (S = 10.8) and Bi2Mo3O12 sensors (S = 4.8) at 170 degrees C. In contrast to the pure MoO3 and Bi2Mo3O12 sensors, the MoO3/Bi2Mo3O12 sensor exhibited an obviously enhanced gas-sensing property for TMA, which might be due to the heterostructure formed between MoO3 and Bi2Mo3O12 and the hollow morphology. It is the first time for MoO3/Bi2Mo3O12 to apply in gas sensors, which might take an important step in the application of MoO3/Bi2Mo3O12 or Bi2Mo3O12 in the field of gas sensing.
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页码:11755 / 11762
页数:8
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