An electrochemical methanol sensor based on a Pd–Ni/SiNWs catalytic electrode

Study of an amperometric glucose sensor based on Pd–Ni/SiNW electrode

“…First, high volume ratio of Pd-Ni/SiNW electrode increases the activity surface, accelerating the electron-transfer reaction, lowering the activation energy. Second, after annealed at 350 • C for 300 s, the Ni-Si layer located between the Ni and silicon nanowire (SiNW) interface has been formed, which prevents the electrode from etching by OH − ions and improves the electrode stability [20,26]. Third, the Pd-Ni particles are deposited onto the SiNWs with high uniformity and good dispersion, indicating that a large amount of Pd-Ni nanoparticles participate in the reaction and result in high activity.…”

“…The chemical solution of HF (20%):AgNO 3 (35 mM) = 1:1 (volume ratio) was used as the etchant for SiNW preparation. After the formation of SiNWs, palladium and nickel were deposited onto the SiNWs by electroless coplating and this method is similar to the one previously reported [19,20].…”

“…And, in the previous work [19,20], Pd-Ni modified silicon nanowire (SiNW) electrodes have been prepared and used for amperometric methanol and ethanol sensors which exhibit excellent sensitivity and stability. The sensor backbone material: nanostructured silicon is the principal component of most semiconductor devices, most importantly integrated circuits and microchips.…”

Highly sensitive methanol chemical sensor based on undoped silver oxide nanoparticles prepared by a solution method

“…Silver oxides are a promising semiconducting material for sensor applications because of the chemical sensitivity towards liquid as well as radical gases, its high chemical stability, suitability, nontoxicity, abundance in nature and low-cost. This material has been used for sensors in the form of single crystals, pellets, powder, and films with coating binders [10][11][12][13]. However, thin-coating-films are more suitable as well as adjustable for such sensors because the chemical-sensing properties are related to the material surface, where the chemicals are adsorbed as well as the surface reactions occurred.…”

Preparation and Electrocatalytic Oxidation Characteristics of Ethanol on Pd/C Catalyst

“…It was considered as possible power sources for the electronic devices and electromobiles [4] . Ethanol proves to be a promising option as fuel due to its high energy density and environmental friendship [5] , and it can be easily mass-produced by the fermentation of the raw materials of sugars [6,7,10] .…”