Communication—Ultra-Small NiO Nanoparticles Grown by Low-Temperature Process for Electrochemical Application

Abstract

In this paper, we report a size-controlled metal oxide under a low-temperature process for the fabrication of an electrochemical sensor based on ultra-small nickel oxide (NiO) nanoparticles (NPs) which are utilized as electrode materials for the detection of n-butylamine chemical. The small size effect (∼6 ± 0.5 nm) and richness of Ni3+ ion concentration of as-synthesized ultra-small NiO nanoparticles exhibited high and reproducible sensitivity of ∼9.51 mA·mM−1·cm−2, limit of detection (LOD) ∼144.21 μM and correlation coefficient (R) ∼ 0.9688 with improved linearity in the range of 100 nM−100 μM.

MOF‐Derived Carbon Embedded NiO for an Alkaline Zn−NiO Electrochromic Battery

“…The peak at 860.9 eV is related to shakeup processes (satellite peak) of NiO [44] . Similarly, 2P 1/2 is also comprised of two peaks at 872.5 eV and 879.4 eV, which are related to the Ni 2+ state and the satellite peak respectively [45] . The binding energy of O 1s spectra can be deconvoluted to 3 oxygen states (Figure S6c, S6g, S6k).…”

“…[44] Similarly, 2P 1/2 is also comprised of two peaks at 872.5 eV and 879.4 eV, which are related to the Ni 2 + ChemElectroChem state and the satellite peak respectively. [45] The binding energy of O 1s spectra can be deconvoluted to 3 oxygen states (Figure S6c, S6g, S6k). The peaks at 529.2 eV, 531.1 and 532.9 eV correspond to NiÀ OÀ Ni, NiÀ OH and adsorbed water respectively.…”

Tuning the Electronic Structure of Cobalt Selenide on Copper Foam by Introducing a Ni Buffer Layer for Highly Efficient Electrochemical Water Splitting

“…A single small peak was observed at 803.75 eV, which was oxidized cobalt due to air oxidation. − The existence of metallic Ni was also identified by analyzing the high-resolution Ni 2p XPS spectrum. The peak at 852.12 eV was assigned to Ni 0 2p 3/2 present in the metallic Ni BL, while peaks at 869.31 and 873.50 eV can assigned as satellite peaks as shown in Figure b. − Two Cu peaks at binding energies of 932.52 and 952.48 eV were observed, which corresponded to Cu 2p 3/2 and Cu 2p 1/2 , respectively, (Figure c; after deconvolution, the peak at 932.2 eV corresponds to Cu 0 and the peak located at 935.09 and 952.46 eV corresponds to Cu 2+ 2p 3/2 and Cu 2+ 2p 1/2 , respectively. The satellite peak was found to be located at 943.74, 954.92, and 964 eV. , The peaks at 56.0 and 57.5 eV shown in Figure d correspond to Se 3d 5/2 and Se 3d 3/2 , respectively, which is evidence of the formation of Se – present in CoSe 2 in the synthesized Cuf@Ni-CoSe 2 catalyst .…”

Successful CO2 reduction under visible light photocatalysis using porous NiO nanoparticles, an atypical metal oxide

“…35 The components at 860.7 and 879.2 eV were marked as satellites of Ni 2p 3/2 and Ni 2p 1/2 . 36 The peak at 855.6 eV was rather controversial. It might come from Ni 3+ species on the NiO surface or from NiO 5 in pyramidal symmetry.…”