Abstract
AbstractAiming at controllable modulating metal−support interactions to achieve an optimal trade‐off of geometric/electronic effect in supported catalysts, we developed a reliable approach based on the typical 2D material layered double hydroxide (LDHs). A series of TiOx/Pd/MgTiAl‐MMO‐X catalysts with adjustable interfacial effect were acquired by loading PdCl42− precursor and further preciously adjusting the topological reduction temperature, based on the regulatory effect of Mg–O–Ti–O–Al–O structure in the support on the reducibility and mobility of Ti4+. The catalysts with semi‐continuous and accessible TiOx/Pd interface, confirmed by AC‐HAADF‐STEM, CO chemisorption, XPS, exhibit much higher H2O2 yield than the catalyst with over‐encapsulation structure. The TiOx/Pd/MgTiAl‐MMO‐450 catalysts possessed optimal geometric and electronic structure exhibited the highest activity with TOF of 9.75 s−1, excellent H2O2 yield of 11.4 g/L, as well as good stability.
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