Microstructure and strong optical absorption property of the Ag/Al2O3 nano-films

Nanocomposite with high adsorption activity developed using stabilized silver modified alumina and TiO2-NPs incorporated into β-cyclodextrin-graphene oxide

“…This observation could be due to the crystalline phase of Ag species on the Ag/Al 2 O 3 [ 18 , 23 ]. The formation of Ag nanoparticles dispersed in thin Al 2 O 3 films was confirmed by these results [ 24 , 25 ]. The XRD data yielded peaks that also confirmed the presence of α-Al 2 O 3 , as in 2 theta angles of 35.1° corresponding to (104) [ 26 ].…”

“…The exothermic peak at about 380 °C could be due to the formation of Ag particles, while the broad peak at 520 °C could be related to the formation of Al 2 O 3 . Taken together, the results indicate that the organic components of the films were completely eliminated before the formation temperature of the Ag/Al 2 O 3 nanoparticles was reached [ 24 ].…”

High-Conductive AZO Nanoparticles Decorated Ni-Rich Cathode Material with Enhanced Electrochemical Performance

“…For AZO-decorated NCM523, the binding energy at 854.99 eV of Ni 2p 3/2 (Figure d) is very close to that for the pristine NCM523 sample (855.09 eV) with the increased intensity, which demonstrates that the oxidation state of Ni in both samples is a mixture of +2 and +3, and AZO decoration does not change the valence state of Ni element in host materials. , Moreover, the binding energy of Co 2p 3/2 (Figure e) main peaks around 780.09 eV represents the oxidation state of Co which is +3, which is in good agreement with the valence of Co in the host composite. , In addition, the Mn 2p 3/2 main peaks (Figure f) appear at 642.79 eV in the modified sample and at 642.59 eV in the pristine NCM523 sample corresponding to previous results for LiNi 0.5 Co 0.2 Mn 0.3 O 2 . Meanwhile, the Zn 2p 3/2 peak of the AZO-decorated sample shown in Figure b is located at 1021.89 eV, in accordance with Zn 2+ oxidation state of the ZnO material. , The spectrum of Al 2s (Figure c) is observed at 118.29 eV, showing that the predominant oxidation state is +3. − Considering that the signal of matrix elements can be detected after AZO modification, perhaps the AZO nanoparticles are not uniformly coated on the surface of the pristine NCM523 particles. Actually, the existence of AZO is sparsely decorated on the surface and could decrease charge-transfer resistance, which will be discussed in the TEM measurement, rate property, and EIS analysis.…”

Effect of Sputtering Area Ratio of Gold/Alumina Target on Microstructure and Optical Absorption Properties of Au Nanoparticles dispersed in Amorphous Alumina Dielectric films

“…The redshift of the SPR peak in the samples with 7-30 vol% Au may be due to the size effect. The narrowed peak in the sample with 46 vol% of Au may be due to the enhanced intrinsic free electron oscillation inside metal particles [17].…”

“…However, various deposition parameters such as argon pressure, the variety of sputtering target, and sputtering power may influence the properties of the films. Furthermore, much attention has been paid to the changes of volume fraction of metal nanoparticles, and the composite of nanoparticles embedded in various matrices (TiO2, ZnO, BaTiO3, SiO2 and so on) for single metal dispersed composite films [17][18][19][20][21][22]. In our previous work [16], we studied the effect of argon pressure on the concentration of gold nanoparticles dispersed in an alumina matrix.…”