The redox performance of rare earth concentrates has also been greatly improved. The combined effect of Fe, Mn and the rare earth concentrate provides more weak acid sites for the reaction and promotes desorption of NO in the low temperature section. Fe and Mn are uniformly dispersed on the surface of the rare earth concentrate. The specific surface area of the rare earth concentrate increases after Fe and Mn are doped.
The results showed that the NO x conversion rate of Fe and Mn doped rare earth concentrates reached 94.8% at 200 ☌. SEM, XRD, BET, XPS, H 2-TPR, NH 3-TPD, NO-TPD, FTIR and other characterization methods are used to explore the surface properties and mechanism of rare earth concentrates doped with transition metals, and at the same time determine its catalysis in a simulated flue gas device performance. In this paper, the transition metals Fe and Mn are doped on the surface of rare earth concentrates by the impregnation method to prepare NH 3-SCR catalyst active powder. Therefore, the CAO/CN/GCE has a great application prospect as a highly efficient catalyst material for highly sensitive and efficient non-enzymatic glucose sensor. The real time application of CAO/CN/GCE was evaluated towards GLU sensing in human blood, saliva and sweat, a satisfactory result was obtained. The anti-interference, reproducibility, repeatability and stability analysis suggest the promising performance of the fabricated electrode towards GLU detection. The limit of detection (LOD) at CAO/CN modified glassy carbon electrode (CAO/CN/GCE) was calculated to be 0.86 nM in the linear concentration range of 0.01–1034.5 µM by amperometric method. The synergistic effects of pyridinic-N, pyrrolic-N and graphitic-N are highly influencing and playing a prominent role in sensory performances of the prepared CAO/CN nano-electrocatalyst towards GLU sensing. The structural, morphological and electrochemical analysis of CeAlO 3/CN (CAO/CN) shows the successful synthesis without any impurities. The combination of CeAlO 3 with CN provides an excellent sensing platform for developing highly sensitive and stable electrocatalyst for non-enzymatic glucose (GLU) oxidation. The carbon nitride (CN) was synthesized directly by fractional thermal polymerisation process. In the present work, a novel method for the green synthesis of CeAlO 3 (CAO) polycrystalline powder through deep eutectic solvents (DES) was carried out by hydrothermal method.
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