It is reported that well-dispersed core-shell Pd@Zn nanoparticles of controllable shell thickness can be synthesized from a Pd/CdSe-ZnO precursor in H2 without using a surfactant: the Pd ensembles on the material surface with electronic modulation by Zn atoms give a methanol turnover frequency (TOF) and selectivity of 3.3 × 10-1 s-1 and 80%, respectively, the yield of which is 2-fold the best reported value over other Pd-based catalysts.
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The authors wish to thank EPSRC, UK (Oxford), NSFC-21421004, 21373153, 21322307, China, and iChEM consortium, China, for the financial support of this collaborative work and are grateful to the Chinese Scholarship Council (CSC) of China for granting a PhD scholarship to FL to work at Oxford. The authors also acknowledge the help in TRPL provided by Prof. Wai-ming Kwok of Hong Kong Polytechnic University. The ECUST group also thanks the National Super Computing Center in Jinan for the computing time