Manganese-Doped Zinc Sulfide Quantum Dots for Methane Detection in Aqueous Media

Abstract:

A simple aqueous based synthesis technique at room temperature was performed for preparation manganese-doped zinc sulfide quantum dots. Under 4 eV excitation quantum dots show photoluminescence bands at 2.11 and 3.1 eV corresponded to Mn²⁺ and intrinsic ZnS emission respectively. ZnS quantum dots were used as the luminescent sensing element for methane detection in aqueous media. The luminescent sensor response occurs due to photoinduced electron transfer from QDs to methane molecule resulting in QD luminescence quenching.

• Periodical: Defect and Diffusion Forum (Volume 386)
• Pages: 229-235
• DOI: https://doi.org/10.4028/www.scientific.net/DDF.386.229
• Online since: September 2018
• Authors: Alexander A. Sergeev*, Ksenia A. Sergeeva, Andrei A. Leonov, Irina V. Postnova, Sergey S. Voznesenskiy, Yuriy Nikolaevich Kulchin
• Keywords: Charge Transfer, Methane, Optical Sensor, Quantum Dot, Zinc Sulfide

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