Shape‐controlled Electrodeposition of Standing Pt Nanoplates on Gold Substrates as a Sensor Platform for Nitrite Ions

Abstract

Electrochemically deposited standing platinum (Pt) nanoplates were fabricated on gold (Au) substrate assisted by the amine functionalized silane and L-glutamic acid (LG) as nucleating and structure directing agents, respectively. Various win over factors responsible for the electrodeposition of the Pt nanoplates was methodologically analyzed. The treatment time with the thiol functionalized silane (M) and the role of LG were found to be decisive for the demonstration of Pt nanoplates display at the Au substrate. Plausible growth mechanism was proposed for the vertical growth and random orientation of the Pt nanoplates. Constructed Pt nanoplates displayed substrate were applied as a sensor platform toward the nitrite ion detection; improved performance was noted than that of the controlled experiments. Furthermore, sensor platform had exhibited recent selectivity toward the nitrite ions from the mixture of possible interferences.

Hydrothermal Synthesis of Zr‐Amino Terephthalate and its Composite with MWCNTs as a Novel Electrode Material in Nitrite Quantification

“…Vishnu et.al have used MoSe 2 −MoO 3 composite as an electrode material in nitrite sensing [44]. Sejin Ahn et.al have reported an electrochemically deposited vertically aligned platinum (Pt) nanoplates fabricated on gold (Au) substrate as a nitrite sensing platform [45]. All these sensors have certain limitations like poor stability of modifier, high detection limits as well as narrow working ranges.…”