Enhanced photocatalytic performance of g-C3N4 with BiOCl quantum dots modification

• Novel BiOCl quantum dots modified g-C3N4 photocatalyst was synthesized.
• BiOCl-g-C3N4 showed much higher photocatalytic activity than pure g-C3N4 and BiOCl.
• High separation efficiency of photoinduced carriers results in the enhanced performance.

Novel BiOCl quantum dots modified g-C3N4 photocatalyst was synthesized by a one-step chemical bath method at low temperature. The photocatalyst was characterized using X-ray diffraction, high-resolution transmission microscopy UV–visible light diffusion reflectance spectrometry, and photoluminescence spectroscopy. The results indicated that BiOCl quantum dots were dispersed on g-C3N4 to form heterojunction structures with high specific surface area. BiOCl-g-C3N4 showed much higher photocatalytic activity than pure g-C3N4 and BiOCl for rhodamine B degradation. The enhanced performance was induced by the high separation efficiency of photoinduced carriers.

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