Abstract
Colloidal semiconductor quantum dots (QDs) have been proven to be excellent photocatalysts due to their high photostability, large extinction coefficients, and tunable optoelectrical properties, and have attracted extensive attention by synthetic chemists. These excellent properties demonstrate its promise in the field of photocatalysis. In this review, we summarize the recent application of QDs as homogeneous catalysts in various photocatalytic organic reactions. These meaningful works in organic transformations show the unique catalytic activity of quantum dots, which are different from other semiconductors.
Highlights
The efficient use of clean, sustainable, and pollution-free solar energy provides an effective solution to the energy crisis and environmental pollution
In early 2016, Weiss et al [27] explored the reduction reaction of nitrobenzene to aniline with CdS quantum dots (QDs) as visible-light photocatalysts and 3-mercaptopropionic acid (MPA) as sacrificial agents
They conducted five organic transformation reactions using lower loading of CdSe QDs to replace the traditional catalysts of Ru or Ir complexes (Scheme 9)
Summary
The efficient use of clean, sustainable, and pollution-free solar energy provides an effective solution to the energy crisis and environmental pollution. CdS QDs have good photosensitivity properties, less dosage, and high efficiency, and absorb visible light to stimulate reactants to produce free radicals, catalyzing organic synthesis reactions. In early 2016, Weiss et al [27] explored the reduction reaction of nitrobenzene to aniline with CdS QDs (diameter = 4.5 nm) as visible-light photocatalysts and 3-mercaptopropionic acid (MPA) as sacrificial agents.
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