In this section, you can access to the latest technical information related to the FUTURE project topic.

Unraveling the phosphorus-nitrogen bridge in carbon quantum dots/carbon nitride for efficient photodegradation of organic contaminants

Limited transport and migration of photoinduced charges in polymeric carbon nitride (g-C3N4) within the planar layers remain a great challenge for achieving favorable photocatalysis. Herein, phosphorus-doped carbon quantum dots (PCDots) implanted intra-layer carbon nitride nanosheet (PCDots-C3N4) photocatalyst with phosphorus-nitrogen (P?N) bridging was prepared. The 13C and 31P of nuclear magnetic resonance, X-ray photoelectron spectroscopy, and density functional theory calculations confirmed the formation of a P?N bridge. Additionally, implanting PCDots enlarged the ?-? conjugated electronic structure and modulated the plane structure of g-C3N4. The atomic-level connection by the P?N bridge dramatically extended the delocalization effect and facilitated the intramolecular charge transfer. PCDots-C3N4 demonstrated efficient photodegradation of tetracycline hydrochloride (TC) and bisphenol A (BPA) than both g-C3N4 and CDots-C3N4, reaching 76% and 100%, respectively. The possible degradation pathways of TC and BPA were also discussed. This work provides an efficient strategy for rapid electron transfer to form a new paradigm for wastewater remediation.

» Author: Yixuan Wang, Lin Chen, Xiaoli Zhao, Huimin Song, Fengting He, Shuai Cheng, Bin Zheng, Chaocheng Zhao, Jinqiang Zhang, Xiaoguang Duan, Yang Liu, Hyoyoung Lee, Hongqi Sun, Shuaijun Wang, Shaobin Wang

» Publication Date: 01/02/2023

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