Synthesis and Characterization of AgPd Bimetallic Nanoparticles as Efficient Electrocatalysts for Oxygen Reduction Reaction

A sigh-performance hydrogen gas sensor based on Ag/Pd nanoparticle-functionalized ZnO nanoplates

“…The diffraction peaks of the face-center cubic Ag and Pd were observed at 2 θ of 39.67°, 40.28°, 46.06°, 65.25°, 67.30°, and 76.65° indexed to (111) Ag , (111) Pd , (002) Pd , (220) Ag , (220) Pd , and (311) Ag crystallographic planes of Ag (JCPDF 89-3722) and Pd (JCPDF 46-1043). 41 Here, the (111) peak of Ag/Pd nanoparticles lines between the (111) peaks of face-centered cubic crystals Ag and Pd, indicating the successful formation of the Ag/Pd alloy. 30 The well-defined diffraction peaks indicated that the Ag/Pd alloy was formed as a solid solution.…”

“…4, typical diffraction peaks of the pure ZnO nanoplates aer annealing at 600 °C in 2 h were indexed to the wurtzite (hexagonal) phase of ZnO (JCPDS 36-145) without signicant impurity peak. The major peaks were located at 2q of 31.75°, 34.35°, 36.12°, 47.59°, 56.59°, 62.83°, 66.36°, 67.93°, 69.0°, 72.61°, and 76.86°, corresponding to the (100), (002), (101), 41 Here, the (111) peak of Ag/Pd nanoparticles lines between the (111) peaks of face-centered cubic crystals Ag and Pd, indicating the successful formation of the Ag/Pd alloy. 30 The well-dened diffraction peaks indicated that the Ag/Pd alloy was formed as a solid solution.…”

Ag/AgCl clusters derived from AgCu alloy nanoparticles as electrocatalysts for the oxygen reduction reaction

“…The decrease in W after dealloying could be attributed to the formation of micro-channels in the dealloyed NP structure that affected the oxygen diffusion. In addition, the lower R ct values of both as-prepared AgCu NPs than those of the as-prepared Ag NPs revealed a bimetallic enhancement effect due to Cu in the initial alloy structure 39 (Table S3 and S4†). After the dealloying of the as-prepared NPs, excessive AgCl formation led to a significant increase in R ct .…”

PdAg/Ag(111) Surface Alloys: A Highly Efficient Catalyst of Oxygen Reduction Reaction

“…In this case, the ORR can reach high catalytic performance. Unlike several existing experimental studies on the ORR reactions of PdAg clusters or thin-film alloys [ 24 , 62 , 66 , 67 ], here, we simulated a model of SAA with a special inner-layer structure which has been prepared by heat treatment combined with quenching in our previous experiments. As can be seen from Figure 5 , all the structures had higher limiting potentials than pure Ag(111) ( = 0.61 V), and Pd M @Pd 1L Ag(111) and Pd D @Ag(111) were higher than pure Pd(111) ( = 0.79 V), indicating a synergistic enhancement between Pd and Ag, which can provide solution ideas for the design of bimetallic catalysts.…”