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Inorganic Colloidal Perovskite Quantum Dots for Robust Solar CO

Inorganic Colloidal Perovskite Quantum Dots for Robust Solar CO

Jungang Hou, Shuyan Cao, Yunzhen Wu, Zhanming Gao, Fei Liang, Yiqing Sun, Zheshuai Lin, Licheng Sun

Chemistry. 2017 Jul 18;23(40):9481-9485.

PMID: 28516736

Abstract:

Inorganic perovskite quantum dots as optoelectronic materials have attracted enormous attention in light-harvesting and emitting devices. However, photocatalytic conversion based on inorganic perovskite halides has not been reported. Here, we have synthesized colloidal quantum dots (QDs, 3-12 nm) of cesium lead halide perovskites (CsPbBr3 ) as a new type of photocatalytic material. The band gap energies and photoluminescence (PL) spectra are tunable over the visible spectral region according to quantum size effects on an atomic scale. The increased carrier lifetime revealed by time-resolved PL spectra, indicates the efficient electron-hole separation and transfer. As expected, the CsPbBr3 QDs with high selectivity of greater than 99 % achieve an efficient yield of 20.9 μmol g-1 towards solar CO2 reduction. This work has opened a new avenue for inorganic colloidal perovskite materials as efficient photocatalysts to convert CO2 into valuable fuels.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
LS76931	Perovskite quantum dots			Price

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