LAUSR

The sintering resistance of supported Au nanoparticle (NP) catalysts is crucial to their practical application in heterogeneous catalysis reactions. Herein, a series of Au@La2O3 core–shell nanoparticle catalysts supported on the surfaces of La2O2CO3 nanorods (Aun@La2O3/LOC-R) were successfully synthesized via the method of interaction-induced self-assembly. Supported Au NPs with uniform size are deposited on the surfaces of La2O2CO3 nanorods by the gas bubbling-assisted membrane reduction (GBMR) method. La2O3 shell layers spontaneously formed and then partially coated the surface of Au NPs for interaction-induced self-assembly of Au@La2O3 core–shell NPs during the process of calcination at 600 °C. The strong interaction between Au NPs and La2O3 oxides increases the density of active sites (oxygen vacancies) for enhancing the adsorption–activation properties of O2. Aun@La2O3/LOC-R catalysts show high catalytic activity and stability for soot oxidation under the conditions of loose contact between soot and ...