Environmentally friendly synthesis of CeO2 nanoparticles for the catalytic oxidation of benzyl alcohol to benzaldehyde and selective detection of nitrite

Abstract

Cerium oxide nanoparticles (CeO2 NPs) are favorable in nanotechnology based on some remarkable properties. In this study, the crystalline CeO2 NPs are successfully prepared by an efficient microwave combustion (MCM) and conventional route sol-gel (CRSGM) methods. The structural morphology of the as-prepared CeO2 NPs was investigated by various spectroscopic and analytical techniques. Moreover, the XRD pattern confirmed the formation of CeO2 NPs as a face centered cubic structure. The magnetometer studies indicated the low saturation magnetization (23.96 emu/g) of CeO2 NPs for weak paramagnetic and high saturation magnetization (32.13 emu/g) of CeO2 NPs for super paramagnetic. After that, the oxidation effect of benzyl alcohol was investigated which reveals good conversion and selectivity. Besides, the CeO2 NPs modified glassy carbon electrode (GCE) used for the detection of nitrite with linear concentration range (0.02–1200 μM), low limit of detection (0.21 μM) and higher sensitivity (1.7238 μAμM−1 cm−2). However, the CeO2 NPs modified electrode has the fast response, high sensitivity and good selectivity. In addition, the fabricated electrode is applied for the determination of nitrite in various water samples. Eventually, the CeO2 NPs can be regarded as an effective way to enhance the catalytic activity towards the benzyl alcohol and nitrite.

NiO decorated CeO2 nanostructures as room temperature isopropanol gas sensors

“…2,3 The important applications of CeO 2 include solid oxide fuel cells, solar cells, gas sensors, polishing agents, solid electrolytes, catalysts, electrochromic thin lms, and energy storage. [4][5][6] During the past decade, CeO 2 has gradually become a promising metal oxide for gas sensing applications and has gained an upsurge in interest in the eld of gas sensors owing to its properties like large number of oxygen vacancies and high oxygen storage capacity. 7 CeO 2 has already proved its ability in detecting various toxic gases like acetone, formaldehyde, ethanol, carbon monoxide, and ammonia.…”

Hydrogen Production by Steam Reforming of Fusel Oil Using a CeCoOx Mixed‐Oxide Catalyst

“…The XRD patterns of the CeO 2 and mixed‐oxide catalysts are also presented in Fig. , where all the diffraction peaks of CeO 2 exhibited the typical cubic structure consisting mainly of the (111) diffraction peak and also the lower intensity (200), (220), (311), and (400) diffraction peaks , . The characteristic peaks attributed to the Co 3 O 4 crystal phase appeared at a 2 θ of 37.2°, 59.3°, 61.8°, and 68.2° .…”

Ceria as an Efficient Nanocatalyst for Organic Transformations

“…Afterwards, its oxidation effect was investigated on benzyl alcohol which reveals better conversion and selectivity. The catalytic oxidation properties of ceria closely tied with its redox and oxygen storage behavior, and CO oxidation can work as a model reaction to probe the redox properties of CeO 2 [142] (Scheme 1).…”