“…The oxygen binding energy of peaks 529.3 eV, which represents a common (metal) M–O bond [ 3 , 4 ], and 531.0 eV confirms the existence of oxygen in the CuO lattice and hydroxyl absorption which takes place on the electrode surface [ 2 , 5 ]. The O1s peak observed at 531.8 eV suggest that carbon contaminants are present on the electrode material in the form of a C=O bond [6] . Fig.…”
In this data in brief article dataset of plasma-assisted nitrogen doping of a binderless, spin-coated CuO-NiO mixed oxide thin film was presented (Palmer et al., 2020). A comparison of the CuO, N–CuO/Cu
2
O, CuO:NiO and N–CuO/Cu
2
O:NiO are presented. The as prepared films were used for the application of a glucose sensor. The nitrogen doped species, generated during plasma ignition, resulted in a beneficial phase transformation of CuO to Cu
2
O. Characterisation techniques such as XPS, particle size distribution and EIS techniques were utilized to study the morphology, structural features, doping profile and electrical properties of the various developed electrodes. The electrochemical performance of the thin film sensors was tested using cyclic voltammetry and chronoamperometry. The CuO exhibited a sensitivity of 830 µA/mM cm
2
up to 1.65 mM of glucose, N–CuO/Cu
2
O had a linear range up to 1.91 mM with a sensitivity of 873 µA/mM cm
2
and the CuO:NiO electrode had a linear range up to 1.65 mM with a sensitivity of 1103 µA/mM.cm
2
respectively. A detailed description of the methodology used is provided below.
“…The oxygen binding energy of peaks 529.3 eV, which represents a common (metal) M–O bond [ 3 , 4 ], and 531.0 eV confirms the existence of oxygen in the CuO lattice and hydroxyl absorption which takes place on the electrode surface [ 2 , 5 ]. The O1s peak observed at 531.8 eV suggest that carbon contaminants are present on the electrode material in the form of a C=O bond [6] . Fig.…”
In this data in brief article dataset of plasma-assisted nitrogen doping of a binderless, spin-coated CuO-NiO mixed oxide thin film was presented (Palmer et al., 2020). A comparison of the CuO, N–CuO/Cu
2
O, CuO:NiO and N–CuO/Cu
2
O:NiO are presented. The as prepared films were used for the application of a glucose sensor. The nitrogen doped species, generated during plasma ignition, resulted in a beneficial phase transformation of CuO to Cu
2
O. Characterisation techniques such as XPS, particle size distribution and EIS techniques were utilized to study the morphology, structural features, doping profile and electrical properties of the various developed electrodes. The electrochemical performance of the thin film sensors was tested using cyclic voltammetry and chronoamperometry. The CuO exhibited a sensitivity of 830 µA/mM cm
2
up to 1.65 mM of glucose, N–CuO/Cu
2
O had a linear range up to 1.91 mM with a sensitivity of 873 µA/mM cm
2
and the CuO:NiO electrode had a linear range up to 1.65 mM with a sensitivity of 1103 µA/mM.cm
2
respectively. A detailed description of the methodology used is provided below.
“…Therefore, tremendous progress [11,[14][15][16] over the past decade in the shape-controlled synthesis of Au NSs in particular; decorating GR derivative with dendritic NSs is an essential step for fabricating the functional devices and it remains a challenge.…”
“…For TiO 2 -rGO heterostructure sample, the peaks fit at 529.3; 530.7; and 532.3 eV. The oxygen content for TiO 2 and TiO 2 -rGO heterostructure was also similar as 29.93 and 30.37% (Table 1-SI), respectively, indicating that there is no evidence of chemical states modifications in relation with oxygen content between both samples [25,30,31]. Although XPS results do not show a reduction behavior of TiO 2 -rGO heterostructure sample, Raman results confirm that the heterostructure sample has reduced graphene oxide Thermal gravimetric analysis (TGA) and differential thermal analysis (DSC) in air atmosphere were conducted to obtain the thermal properties of GO and TiO 2 -rGO ( Fig.…”
Section: Structure and Morphology Characterization Of Photocatalystsmentioning
The increase in photocatalytic activity of reduced graphene oxide-TiO 2 heterostructures under ultraviolet and visible illumination is already well known, as the photocatalyst mechanism modifications with heterostructure formation. However, which step in the degradation mechanism is modified with reduced graphene oxide-TiO 2 heterostructure formation has been not demonstrated yet. These specific modifications are caused by the alteration in reactive oxygen species production. In this way, the goal of this study is defined which reactive oxygen species are produced by reduced graphene oxide-TiO 2 heterostructure in the photocatalytic mechanism. A fast synthesis method to obtain this heterostructure by the microwave-assisted solvothermal method is presented, obtaining an improvement of photocatalytic efficiency, under UV and visible illumination. The non-hydrolytic method favors a better distribution of TiO 2 nanoparticles around the reduced graphene oxide structure and inhabits the charge carrier recombination, showing a faster electron transfer than TiO 2 samples. The RhB discoloration mechanism confirms that the reduced graphene oxide presence modifies the main reactive oxygen species produced. Under UV illumination, O 2 H* radical is the dominant reactive oxygen species produced by TiO 2. For the heterostructure, the direct oxidation by oxygen vacancy is the primary mechanism step. Under visible illumination, O 2 H* is the main reactive oxygen species for both materials. The results present a better understanding of principal reasons related to the improvement in photocatalytic activity and could be useful in semiconductor heterostructure design.
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