Construction of novel g-C3N4/β-FeOOH Z-Scheme heterostructure photocatalyst modified with carbon quantum dots for efficient degradation of RhB

Carbon Quantum Dots/Cu2O Photocatalyst for Room Temperature Selective Oxidation of Benzyl Alcohol

“…Firstly, the abundant oxygen-containing functional groups (e.g., hydroxyl groups, etc.) on the carbon quantum dots provide more activation sites and promote the interaction between the reaction components; secondly, the conjugated structure of the carbon dots promotes the adsorption of the substrate on the catalyst surface by the π–π interactions of the benzene ring [ 34 ]; and lastly, the introduction of the carbon quantum dots improves the energy band distribution of the Cu 2 O and facilitates the separation and movement of the carriers [ 35 ]. Entries 1–4 demonstrate that light is an important driving force for benzyl alcohol oxidation.…”

“…According to previous reports, the upconversion photoluminescence property of carbon quantum dots also plays a considerable role in the reaction [ 28 ]. It absorbs long-wavelength light and then emits short-wavelength light through upconversion, and also excites Cu 2 O to form electron–hole pairs, which is conducive to an enhancement in the photocatalytic oxidation activity of benzyl alcohol using the CQDs/Cu 2 O complex [ 35 , 40 , 41 ].…”