Electroless deposition of Pd/Pt nanoparticles on electrochemically grown TiO₂ nanotubes for ppb level sensing of ethanol at room temperature

Abstract

Uniform decoration of TiO2 nanotubes by Pd/Pt nanoparticles through electroless plating for ppb level detection of ethanol at room temperature.

Field‐Assisted Sensitivity Amplification in a Noble Metal Nanoparticle Decorated WO3/GO Hybrid FET‐Based Multisensory Array for Selective Detection of Breath Acetone

“…As the number of interaction sites is large in metal oxides (here, WO 3 ), surface interactions with ambient gas/vapors and electronic exchange with GO were enhanced in the hybrid channel. XPS spectra in Figure 4 shows the conversion of metallic noble metals nanoparticles to the different oxidations states that must increase their work function [66] . Due to the fractional removal of the adsorbed oxygen by surface interaction of VOCs, noble metal nanoparticles partially back to their metallic states decreasing their work function and donate electrons to the GO layer (Figure 7d).…”

Statistical Analysis for Selective Identifications of VOCs by Using Surface Functionalized MoS2 Based Sensor Array

“…The sensor was recovered by flowing 450 SCCM synthetic air by using a mass flow controller. The amount of injected VOC was calculated by using the formula: C (ppm) = 2.46 × (V1D/VM) × 103, where D (gm/mL), M (gm/mol), and V (L) represent density of the VOC, molecular weight of the VOC and volume of vaporization chamber, respectively [13,25,26]. Seven different VOCs, i.e., acetone, 2-propanol, benzene, ethanol, methanol, toluene, and xylene were tested during the study.…”

SrTiO3–TiO2 Heterostructured Nanotube Arrays for Ultrafast Ethanol Sensing

“…Conventional semiconducting metal oxides such as TiO 2 , − In 2 O 3 , , CO 3 O 4 , CuO, Fe 2 O 3 , In 2 O 3 , SnO 2 , , and WO 3 , , have widely been used for the detection of volatile organic compounds (VOCs). The fascinating physical and chemical properties such as stability, large band gap, high surface-to-volume ratio, the possibility of synthesizing different nanoforms, biodegradability, nontoxicity, and low cost of TiO 2 among other metal oxides make it the most promising gas/VOC sensing material. , Many researchers introduced a variety of TiO 2 morphologies including one-dimensional (1D), , two-dimensional (2D), and three-dimensional (3D). 3,4,9 1D nanomaterials, mainly TiO 2 nanotubes, have been reported as potential gas sensing materials ,, due to their extremely high effective surface area.…”

“…The fascinating physical and chemical properties such as stability, large band gap, high surface-to-volume ratio, the possibility of synthesizing different nanoforms, biodegradability, nontoxicity, and low cost of TiO 2 among other metal oxides make it the most promising gas/VOC sensing material. , Many researchers introduced a variety of TiO 2 morphologies including one-dimensional (1D), , two-dimensional (2D), and three-dimensional (3D). 3,4,9 1D nanomaterials, mainly TiO 2 nanotubes, have been reported as potential gas sensing materials ,, due to their extremely high effective surface area. However, their limited time stability, high working temperature (200–400 °C), and high reactivity to the traces of moisture inhibit the sensing characteristics. , …”

“…Among various volatile organic compounds, ethanol is a widely known VOC used in industries and laboratories, monitoring drunken driving, and so forth . Ethanol as a biomarker for pulmonary disease and liver damage gathered more interest from the researchers for efficient and real-time detection for breath analysis application. , Trabelsi et al studied the ethanol sensing properties of oxygen vacancy-modulated SrTiO 3‑δ compounds and revealed that the number of oxygen vacancies can be easily modulated in SrTiO 3 and can significantly improve its ethanol sensing performance .…”