Development of a benzaldehyde sensor utilizing chemiluminescence on nanosized Y₂O₃

Abstract

A chemiluminescence sensor has been proposed for sensitive determination of benzaldehyde, with nanosized Y(2)O(3) as the sensing material. Under optimized conditions, the linear range of the CL intensity vs. the concentration of benzaldehyde vapour is 1.8 ng/mL-10.8 microg/mL (r(2) = 0.9996), with a detection limit of 0.90 ng/mL (signal:noise ratio = 3:1). The sensor also exhibits high selectivity to benzaldehyde because no or weak CL signals have been detected when foreign substances are introduced into the sensor. In addition, the sensor also shows good stability and longer lifetime within 100 h. The results indicate that the proposed sensor, which has high sensitivity and selectivity, shows great potential for the detection of benzaldehyde.

Advances in nanomaterial-assisted cataluminescence and its sensing applications

“…After that, many CTL sensors based on various nanomaterials were established in rapid succession by different groups, such as nanosized SrCO 3 for ethanol and acetaldehyde vapors [33,55], nanosized Y 2 O 3 for trimethylamine, benzene, benzaldehyde and ethyl acetate vapors [50,[56][57][58], nanosized LaCoCO 3 for an NH 3 sensor, nanosized ZnWO 4 and SiO 2 /Fe 3 O 4 for ether sensors [48,59,60], nanosized V 2 Ti 4 O 13 for formaldehyde vapor, and α-Fe 2 O 3 and SnO 2 nanotubes (NTs) for H 2 S sensors [41,49,61].…”

Controllable Synthesis of Y2O3 Microstructures for Application in Cataluminescence Gas Sensing

“…[2] Yttrium oxide and its derivatives are attractive materials for their unique optical and electronic qualities and good catalytic properties towards many reactions, and have been used in a broad range of fields, such as optics and optoelectronics, [3] advanced ceramics, [4] chemical sensors, [5] catalysis, [6] and energy conversion and storage devices. [7] In the last decade, various shapes of solid materials, such as nanorods, nanotubes, nanoplates, microspheres, nanopolyhedra, and other polymorphic forms, have been synthesized by a variety of techniques such as solution-based sol-gel processing, [8] combustion, [9] microemulsion techniques, [10] co-precipitation, [11] hydrothermal/solvothermal synthesis, [12] thermolysis, [13] electrochemical methods, [14] solid/liquid-phase chemical routes, [15] and combinations thereof.…”

Organic Molecule Based Sensor for Aldehyde Detection

“…Here the signals are generated from excited intermediates of the analyte during catalytic oxidation on the catalyst surface unlike other sensors where sensitive materials are used for sensing. The limit of detection of this type of sensor (nanosized Y 2 O 3 [6]) for benzaldehyde is ~ 0.90 ng/mL Colorimetric sensors are sensors that change colour of the sensitive material when exposed to the sensing gas. In colorimetric sensor for formaldehyde detection a primary amine (R-NH 2 ) containing sensing material adds to formaldehyde by nucleophilic addition to form imine (R=NH).…”

“…Studies are carried out to make a sensor that can detect low concentration of aldehyde that shows good stability of response, and has minimum cross sensitivity. Chemiluminesence-based gas sensor uses nanosized catalysts such as BaCO 3 , Y 2 O 3 , MgO, Fe 2 O 3 for the detection of aldehyde [5,6]. Cataluminesence/ chemiluminesence sensors working principle is that the vapor reacts with solid catalyst surface.…”