TY - JOUR
T1 - Selenium Nanoneedles Deposited on a Pencil Graphite Electrode for Hydrazine Sensing
AU - Ishtiaq, Sumaya
AU - Sohail, Manzar
AU - Rasul, Shahid
AU - Zia, Abdul Wasy
AU - Siller, Lidija
AU - Chotana, Ghayoor Abbas
AU - Sharif, Muhammad
AU - Nafady, Ayman
PY - 2022/10/28
Y1 - 2022/10/28
N2 - The low toxicity of Se nanoparticles (NPs) makes it a suitable candidate for biomedical and sensing applications. Herein, we, for the first time, report the modification of a pencil graphite electrode with Se nanostructures (Se/PGE) by a facile chemical bath deposition (CBD) method. Hydrazine, a routine chemical in various industries, is toxic even in trace amounts and poses a serious threat due to its carcinogenic and mutagenic nature. Therefore, it is crucial to detect its presence in aqueous media. The Se/PGE exhibited outstanding, reproducible, and selective electrocatalytic activity for hydrazine determination. The Se/PGE displayed a stable amperometric response with a wide linear concentration range of 1 μM–50 mM, a LOQ of 90 nM, a very low LOD of 45 nM, and a sensitivity of 0.813 μA·μM–1·cm–2. Moreover, Se/PGE showed a negligible response toward common interferences like NO3–1, CH3COO–1, phenol, and DMF at the selected applied potential. Applying the as-fabricated sensor for hydrazine detection in real-life samples (drinking water) showed satisfactory results with a recovery percentage of 96.9%. Further, our methodology paves the way to fabricate modified pencil graphite electrodes (PGEs) through a convenient CBD method.
AB - The low toxicity of Se nanoparticles (NPs) makes it a suitable candidate for biomedical and sensing applications. Herein, we, for the first time, report the modification of a pencil graphite electrode with Se nanostructures (Se/PGE) by a facile chemical bath deposition (CBD) method. Hydrazine, a routine chemical in various industries, is toxic even in trace amounts and poses a serious threat due to its carcinogenic and mutagenic nature. Therefore, it is crucial to detect its presence in aqueous media. The Se/PGE exhibited outstanding, reproducible, and selective electrocatalytic activity for hydrazine determination. The Se/PGE displayed a stable amperometric response with a wide linear concentration range of 1 μM–50 mM, a LOQ of 90 nM, a very low LOD of 45 nM, and a sensitivity of 0.813 μA·μM–1·cm–2. Moreover, Se/PGE showed a negligible response toward common interferences like NO3–1, CH3COO–1, phenol, and DMF at the selected applied potential. Applying the as-fabricated sensor for hydrazine detection in real-life samples (drinking water) showed satisfactory results with a recovery percentage of 96.9%. Further, our methodology paves the way to fabricate modified pencil graphite electrodes (PGEs) through a convenient CBD method.
KW - chemical bath deposition
KW - electrochemical sensing
KW - hydrazine sensing
KW - pencil graphite electrode
KW - selenium nano-needles
UR - http://www.scopus.com/inward/record.url?scp=85139369242&partnerID=8YFLogxK
U2 - 10.1021/acsanm.2c02475
DO - 10.1021/acsanm.2c02475
M3 - Article
SN - 2574-0970
VL - 5
SP - 14336
EP - 14346
JO - ACS Applied Nano Materials
JF - ACS Applied Nano Materials
IS - 10
ER -