+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Enhanced resistive acetone sensing by using hollow spherical composites prepared from MoO 3 and In 2 O 3

Enhanced resistive acetone sensing by using hollow spherical composites prepared from MoO 3 and In 2 O 3

Mikrochimica Acta 186(6): 359

Hollow sphere composites were synthesized by a template-free hydrothermal method from MoO3 and In2O3. The spheres have a typical size of 800 ± 50 nm and were characterized by XRD, FESEM, TEM, XPS. Gas sensors based on samples with different Mo/In composite ratios were fabricated and their gas sensing properties were studied. The results show that a Mo:In ratio of 1:1 in the composite gives the highest response, typically at a working temperature of 250 °C. The response increases to 38 when exposed to 100 ppm acetone at 250 °C. This is 13.6 times better than when using pure MoO3. The sensor shows improved selectivity, response, repeatability and long-term stability. Typical features include a large specific surface area, and high levels of chemisorbed oxygen and defective oxygen sites. The N-N heterojunction theory was used to explain the improvement of gas sensing performance. Graphical abstract Schematic presentation of MoO3 and In2O3 composites and response test graph for 100 ppm acetone. The sensor based on this composite exhibits a very high response (38) to acetone at 250 °C and very fast response time (2 s).

Please choose payment method:

(PDF emailed within 0-6 h: $19.90)

Accession: 066792771

Download citation: RISBibTeXText

PMID: 31098848

DOI: 10.1007/s00604-019-3471-0

Related references

Nickel-doped tin oxide hollow nanofibers prepared by electrospinning for acetone sensing. Sensors and Actuators B: Chemical 190: 78-85, 2014

Enhanced Acetone Sensing Characteristics of ZnO/Graphene Composites. Sensors 16(11):, 2016

Enhanced acetone sensing performances of hierarchical hollow Au-loaded NiO hybrid structures. Sensors and Actuators B: Chemical 161(1): 178-183, 2012

Enhanced acetone sensing properties of hollow SnO2 fibers using poplar catkins as a bio-template. Powder Technology 344: 183-189, 2019

Enhanced ethanol-gas sensing performance of Ce-doped SnO2 hollow nanofibers prepared by electrospinning. Sensors and Actuators B: Chemical 188: 872-878, 2013

Highly enhanced acetone sensing performance of porous C-doped WO3 hollow spheres by carbon spheres as templates. Sensors and Actuators B: Chemical 239: 597-607, 2017

Enhanced C2H5OH sensing characteristics of nano-porous In2O3 hollow spheres prepared by sucrose-mediated hydrothermal reaction. Sensors and Actuators B: Chemical 155(2): 512-518, 2011

Acetone and ethanol sensing characteristics of magnesium zinc ferrite nano-particulate chemi-resistive sensor. Journal of Materials Science 49(16): 5766-5771, 2014

Metal-Organic Framework Co-MOF-74-Based Host-Guest Composites for Resistive Gas Sensing. Acs Applied Materials and Interfaces 11(15): 14175-14181, 2019

Improved acetone sensing properties of ZnO hollow nanofibers by single capillary electrospinning. Sensors and Actuators B: Chemical 160(1): 753-759, 2011

Preparation, characterization and acetone sensing properties of Ce-doped SnO2 hollow spheres. Sensors and Actuators B: Chemical 173: 839-846, 2012

Manganese-doped zinc oxide hollow balls for chemiresistive sensing of acetone vapors. Mikrochimica Acta 186(1): 44, 2019

Au-Loaded Hierarchical MoO 3 Hollow Spheres with Enhanced Gas-Sensing Performance for the Detection of BTX (Benzene, Toluene, And Xylene) And the Sensing Mechanism. Acs Applied Materials and Interfaces 9(2): 1661-1670, 2017

Soft-templated formation of double-shelled ZnO hollow microspheres for acetone gas sensing at low concentration/near room temperature. Sensors and Actuators B: Chemical 273: 751-759, 2018

Concave ZnFe 2 O 4 Hollow Octahedral Nanocages Derived from Fe-Doped MOF-5 for High-Performance Acetone Sensing at Low-Energy Consumption. Inorganic Chemistry 56(22): 13646-13650, 2017