Synthesis of zinc oxide-alumina nanocables for detection of 3-hydroxy-2-butanone biomarker

Bimetallic PtCu Nanocrystal Sensitization WO3 Hollow Spheres for Highly Efficient 3-Hydroxy-2-butanone Biomarker Detection

“…The response value of 1% PtCu/WO 3 HS to 10 ppm 3H-2B at 110 °C was as high as 221.2, which was higher than reported sensitive materials. [7][8][9][10]48,49 Dramatically, the response value of 1% PtCu/WO 3 HS sensor was increased by about 15 times than WO 3 HS (R a /R g = 14 at 160 °C). Response speed is an important parameter to evaluate whether the sensor can be monitored 3H-2B in real time.…”

“…In order to illustrate the advantages of 1% PtCu/WO 3 gas sensitive materials, researches about 3H-2B gas detection were summarized in Table . − ,, The operating temperature of 3H-2B sensitive materials, such as mesoporous WO 3 , Pt/SnO 2 HS and ZnO@Al 2 O 3 nanocables, are over 250 °C. Meanwhile, the response/recovery time of 3H-2B sensitive materials such as Cr/WO 3 nanofibers (NFs), M-NiO nanocuboids (NCs) and SnO@Al 2 O 3 nanocables are over 30 s. Compared with these sensitive materials, 1% PtCu/WO 3 HS gas sensor displays significant comprehensive performance such as high response, good selectivity, fast response/recovery speed, and low limit of detection.…”

“…Deng et al first reported the 3H-2B gas sensor based on mesoporous WO 3 nanomaterial . Subsequently, Yang et al reported the Cr-doped WO 3 , NiO, and ZnO-Al 2 O 3 sensitive materials for 3H-2B gas detection. − However, there is difficulty in combining low operating temperature, rapid response, high sensitivity, and low detection limit for one sensitive material. − In order to realize the highly efficient 3H-2B detection, it is crucial to design sensitive material. As a typical MOS sensitive material, WO 3 has shown unique sensitivity and selectivity to ketone because of its strong attraction to the carbanyl group. , WO 3 nanomaterials with various morphologies have been prepared for gas detection. , In special, WO 3 hollow spheres, with relatively low densities and large surface areas, have more chances to adsorb and desorb 3H-2B gas molecules, which may lead to high sensitivity, quick response and recovery speed in 3H-2B detection …”

Synergistic Effect of Au–PdO Modified Cu-Doped K2W4O13 Nanowires for Dual Selectivity High Performance Gas Sensing

“…The APWOC sensor’s response to 10 ppm 3H-2B and TEA gas was 2–5 times higher than the pristine, doped, and surface-modified sensors reported in this work and 6 times of those reported in the literature (Table ). ,− The sensitivity of the APWOC sensor was increased dramatically at 120 and 200 °C toward 2H-3B and TEA, respectively, compared to K 2 W 4 O 13 and Cu–K 2 W 4 O 13 ( R a / R g = 48 and 94 at 140 °C). Because of the low operating temperatures, the effects of humidity must be taken into account as shown in Figure S4.…”

Enhanced Response for Foodborne Pathogens Detection by Au Nanoparticles Decorated ZnO Nanosheets Gas Sensor

“…With their advantages of portability and being economically and environmentally friendly, they have quickly become the most practical and widely-used gas sensors [ 8 ]. Since Deng et al firstly studied 3H-2B sensors using mesoporous WO 3 as sensing materials in 2017 [ 7 ], a variety of MOS materials with different morphologies has been developed and successfully applied to detect 3H-2B, such as WO 3 nanoflowers [ 9 ], SnO 2 -Al 2 O 3 nanocables [ 10 ], ZnO-Al 2 O 3 nanocables [ 11 ], and NiO nano cuboids [ 12 ]. However, these materials are not all satisfactory in terms of response/recovery time, sensitivity, limit of detection (LOD), and selectivity.…”