Solution combustion route for synthesizing Co 3 O 4 /MWCNTs and Mn 2 O 3 /MWCNTs electrodes as glucose sensors

Jongprateep, Oratai; Techapiesarnchareonkij, Ratchatee; Surawathanawises, Krissada; Saisriyoot, Maythee; Kamchaddaskorn, Atthadej; Wangkhumphai, Kritwatchara; Puranasamriddhi, Rachata; Sato, Nicha

doi:10.1016/j.matpr.2018.01.008

Cited by 4 publications

(1 citation statement)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nitrite detection via the electrochemical technique using nonenzymatic sensors requires materials with high electrocatalytic activities. Enhancement of electrocatalytic activities can be achieved through chemical composition control, microstructure refining, and material electronic structure tailoring [19,20].…”

Section: Introductionmentioning

confidence: 99%

Electrocatalytic Properties of Calcium Titanate, Strontium Titanate, and Strontium Calcium Titanate Powders Synthesized by Solution Combustion Technique

Jongprateep

Sato

Techapiesancharoenkij

et al. 2019

Advances in Materials Science and Engineering

Self Cite

View full text Add to dashboard Cite

Calcium titanate (CaTiO3), strontium titanate (SrTiO3), and strontium calcium titanate (SrxCa1−xTiO3) are widely recognized and utilized as dielectric materials. Their electrocatalytic properties, however, have not been extensively examined. The aim of this research is to explore the electrocatalytic performance of calcium titanate, strontium titanate, and strontium calcium titanate, as potential sensing materials. Experimental results revealed that CaTiO3, SrTiO3, and Sr0.5Ca0.5TiO3 powders synthesized by the solution combustion technique consisted of submicrometer-sized particles with specific surface areas ranging from 4.19 to 5.98 m2/g. Optical bandgap results indicated that while CaTiO3 and SrTiO3 had bandgap energies close to 3 eV, Sr0.5Ca0.5TiO3 yielded a lower bandgap energy of 2.6 eV. Cyclic voltammetry tests, measured in 0.1 M sodium nitrite, showed oxidation peaks occurring at 0.58 V applied voltage. The highest peak current was observed in Sr0.5Ca0.5TiO3 powder. The superior electrocatalytic performance of Sr0.5Ca0.5TiO3 might be attributed to lower bandgap energy, which consequently facilitates higher electron transfer. Electrocatalytic performance of Sr0.5Ca0.5TiO3 was subsequently reexamined in a wider concentration range of sodium nitrite. The results revealed that the material responded linearly to nitrite solution in the range of 0.1 mM to 0.1 M and exhibited sensitivity ranging from 3.117 to 0.040 μA/mM, in the entire tested nitrite concentrations. The results suggest that Sr0.5Ca0.5TiO3 could also be used for nitrite detection.

show abstract

Section: Introductionmentioning

confidence: 99%