Title
Nitrogen defects/boron dopants engineered tubular carbon nitride for efficient tetracycline hydrochloride photodegradation and hydrogen evolution
Document Type
Journal Article
Publication Title
Applied Catalysis B: Environmental
Volume
303
Publisher
Elsevier
School
School of Engineering
Funders
National Science and Technology Major Project, China
Natural Science Foundation of Jiangsu Province, China
Abstract
Polymeric carbon nitride (g-C3N4) exhibits only mediocre catalytic activity in photocatalytic environmental remediation and energy conversion because of its limited light absorption and sluggish charge transfer. Herein, we assembled novel, tubular carbon nitride (D-TCN450) with nitrogen defects/boron dopants via a self-supramolecular reaction and NaBH4 thermal reduction approach. Advanced characterization results suggested that introducing the nitrogen defects/boron dopants can effectively promote light trapping, charge separation, and valance-band downshift. Density functional theory and electron spin resonance results further proved that the fusion of cyano groups (nitrogen defects) into the framework of D-TCN450 can facilitate oxygen adsorption to form superoxide radicals. As a result, D-TCN450 exhibited dramatically improved photocatalytic hydrogen evolution and photodegradation of tetracycline hydrochloride at a 4- and 9-fold enhancement compared to pristine g-C3N4, respectively. This integrated engineering strategy might provide a unique paradigm for the rational design of novel photocatalysts for sustainable remediation and energy innovation.
DOI
10.1016/j.apcatb.2021.120932
Access Rights
subscription content
Comments
Chen, L., Wang, Y., Cheng, S., Zhao, X., Zhang, J., Ao, Z., . . . Sun, H. (2022). Nitrogen defects/boron dopants engineered tubular carbon nitride for efficient tetracycline hydrochloride photodegradation and hydrogen evolution. Applied Catalysis B: Environmental, 303, article 120932.
https://doi.org/10.1016/j.apcatb.2021.120932