Robust 2 nm-sized gold nanoclusters on Co₃O₄ for CO oxidation

Abstract

In this study, gold nanoparticles are dispersed on Co3O4 nanoplate, forming a specific Au-Co3O4 interface. Upon calcination at 300 oC in air, aberration-corrected STEM images evidenced that the gold nanoclusters...

Well-defined tricobalt tetraoxide's critical morphology effect on the structure–reactivity relationship

“…78 Furthermore, the catalysts Au/Co 3 O 4 P were evaluated in the CO oxidation processes. 80 The catalytic activity was substantially enhanced by adding Au NPs, as shown in Fig. 9h.…”

Intrinsically robust cubic MnCoOx solid solution: achieving high activity for sustainable acidic water oxidation

“…Six strong diffraction lines were observed at 2 θ ∼19.0°, 31.3°, 38.5°, 44.8°, 59.3°, and 65.2°, which correspond to the planes (111), (220), (311), (400), (511) and (440) of cubic Co 3 O 4 in the Fd -3 m (227) space group (JCPDS #42-1467). 52,53 Furthermore, due to the significant dispersion of manganese ions throughout the cobalt framework, no reflections corresponding to MnO x species ( e.g. MnO, Mn 2 O 3 , MnO 2 , etc. )…”

Investigation of catalytic activity of Au/Co3O4(001) and Au/Co3O4(111) in the CO oxidation reaction

“…21 Several factors, including the oxidation state of Au, the size of the Au-NPs, the nature of the oxide support and the interaction between Au-NPs and the support, can greatly impact the activity of CO oxidation. 22 These effects hold practical significance, since a thorough understanding of how these factors influence the catalytic activity could be useful in refining the synthesis of such catalysts, and thus enhancing their performance. According to their reducibility or their ability to activate oxygen, substrate materials can also be classified as ''active'' substrates (reducible oxides, such as Fe 2 O 3 , TiO 2 , CeO 2 and Co 3 O 4 ) and inert substrates (nonreducible oxides, e.g.…”