All inorganic Cs3Bi2Br9 perovskite NCs were synthesized at room temperature, demonstrating blue dual-emission peaks and high photoluminescence quantum yield.
Methanol carbonylation is known as a classic reaction of homogeneous catalysis with large-scale industrial applications. The heterogenization of homogeneous catalysts is being pursued to address the issues of catalyst deactivation and separation encountered in homogeneous systems. Herein, we report the strategy of stabilizing isolated rhodium cations by MFI zeolite to construct highly active Rh@MFI zeolite catalysts for heterogeneous methanol carbonylation. The formation of a zeolite-stabilized [Rh(CO)2I2] analogue during the reaction has been identified to catalyze methanol carbonylation. Moreover, the structure of the zeolite can significantly promote methanol carbonylation within channels through electronic confinment. As a result, a state of the art turnover frequency of 3950 molacetyl/(molRh h) is achieved with the Rh@ZSM-5 catalyst at a low reaction temperature of 423 K. This work presents a simple and general approach toward the heterogenization of homogeneous catalysts for targeted chemical transformations.
Abstract Numerous ingenious top‐down methods have opened a new door to the extensive research of 2D crystals. In this paper, a novel “differential‐temperature exfoliation technology” is proposed to synthesize 2D few‐layer MoS 2 . Several characterizations are conducted for discussion. The spectroscopic, optical, and purification capacity of the as‐exfoliated layered structures is further studied systematically. This research provides insights into the novel top‐down production and the related potential for environmental protection of few‐layer MoS 2 .
Adsorbed oleylamine on Au NP surfaces during preparation can efficiently enhance electrocatalysis of CO2 to CO and inhibit the hydrogen evolution reaction.
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