Electrochemically Co‐deposited Teeth‐like Virus‐Platinum Nanohybrids as an Electrocatalyst for Methanol Oxidation Reaction

Abstract

M13 virus (M13) as scaffolds has a major appeal, owing to their mono‐dispersed, fibrillar morphology and engineerable surface reactive sites. Herein we had developed a facile electrocatalyst for energy application. Platinum nanostructures are directly co‐deposited from a wild‐type M13 (or) two different engineered M13 mixed electrolytes onto the ITO electrodes. The engineered M13 with 4E peptides could specifically nucleate Pt precursor thereby enables the efficient growth of teeth‐like structures at the ITO electrode. The electrocatalytic activity of the resulting electrocatalyst toward methanol oxidation in alkaline medium was investigated and found enhanced mass activity (0.321 A/mgPt) relative to the catalyst prepared from wild‐type M13, Y3E peptides engineered M13 and without M13. Our novel electrocatalyst fabrication can be extended to other metal and metal oxides and its application might be useful to develop novel clean and green energy generating and storage materials.

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

“…Subsequently, known amount (50 μL) of S or S‐LG was drop‐casted on Au/M electrode surface and allowed to dry at 37°C incubator for 1 h and denoted as Au/M/S or Au/M/S‐LG electrode. The dried electrode was carefully rinsed with DI water and soaked in an electrolyte solution of 3 mM of H 2 PtCl 6 in 0.5 M H 2 SO 4 for depositing Pt nanostructures by applying the potential of −0.2 V (Ag/AgCl) for 500 s. Fabricated electrodes was denoted as Au/M/S/Pt or Au/M/S‐LG/Pt electrode. The modified electrodes were stored at room temperature when it's not in use.…”

“…Hence, introducing suitable nucleating and structure directing additives onto the substrates prior to the electrodeposition would be the feasible approach to achieve the shape‐controlled growth. Recently, there were quite a lot of studies on the shape‐controlled electrodeposition of noble metal nanostructures and they were often suffered with mono‐dispersity‐related issues.…”

Review on Recent Developments in Bioinspired-Materials for Sustainable Energy and Environmental Applications

“…The bio-fabricated Au33Pd67 showed better catalytic capacity and peptideenabled method for the fabrication of electro-catalysts. For application in energy sector, M13 virus was used as template to synthesize an electrocatalyst [250]. Due to solderability, cost effective production and more durability of M13, it can be applied as scaffold for construction of bioactive catalysts.…”

Electrocatalysis of Methanol on the Platinum‐Gold Bimetallic Microstructures Codeposited with Silicate Sol‐gel on Indium Tin Oxide Electrode

“…Electrochemical deposition is an attractive and simple method to prepare various sizes and shapes of nanostructured materials modified electrodes with low-cost and straightforward process. The materials composition and method of deposition alter the nanostructured materials size and shape with unique physical and chemical properties [9][10][11][12]. Specifically, the electrochemically codeposited metal nanostructures with amine-functionalized silicate sol-gel are the most promising catalysts for fuel cell and sensor applications [4].…”