香港六合彩中特网

We are pleased to announce a new cover story entitled "Dimension鈥怣atched Zinc Phthalocyanine/BiVO4 Ultrathin Nanocomposites for CO2 Reduction as Efficient Wide鈥怴isible鈥怢ight鈥怐riven Photocatalysts via a Cascade Charge Transfer".

Rational design and fabrication of efficient photocatalysts with favorable charge separation and broad鈥恠pectrum response is crucial for realizing economically feasible solar鈥恡o鈥恈hemical conversion. Our co-authored Communication () presents H鈥恇ond linked ZnPc/BiVO4 nanocomposites as a dimension鈥恗atched ultrathin 2D/2D heterojunction for efficient wide visible鈥恖ight鈥恉riven photocatalytic CO2 reduction.

Abstract

Cascade charge transfer was realized by a H鈥恇ond linked zinc phthalocyanine/BiVO4 nanosheet (ZnPc/BVNS) composite, which subsequently works as an efficient wide鈥恦isible鈥恖ight鈥恉riven photocatalyst for converting CO2 into CO and CH4, as shown by product analysis and 13C isotopic measurement. The optimized ZnPc/BVNS nanocomposite exhibits a ca. 16鈥恌old enhancement in the quantum efficiency compared with the reported BiVO4 nanoparticles at the excitation of 520鈥卬m with an assistance of 660鈥卬m photons. Experimental and theoretical results show the exceptional activities are attributed to the rapid charge separation by a cascade Z鈥恠cheme charge transfer mechanism formed by the dimension鈥恗atched ultrathin (ca. 8鈥卬m) heterojunction nanostructure. The central Zn2+ in ZnPc could accept the excited electrons from the ligand and then provide a catalytic function for CO2 reduction. This Z鈥恠cheme is also feasible for other MPc, such as FePc and CoPc, together with BVNS.

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