Jia Li, Quanquan Shi, Lin Ha, Yanxin Sun, Huiming Shi
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In-situ construction of dual Z-scheme TiO2/CuBi2O4/Bi2O2CO3 heterojunction for exceptional visible-light photocatalytic tetracycline removal
Rational development of innovative photocatalysts with efficient interfacial separation and stronger oxidation–reduction ability of photo-generated carrier is critical for environmental antibiotic purification. In this work, a novel dual Z-scheme heterojunction nanocomposites were fabricated based on the in-situ growth of CuBi2O4 nanoparticles onto the surface of TiO2 nanorods and Bi2O2CO3 nanosheets via a facile one-step hydrothermal method. Ternary TiO2/CuBi2O4/Bi2O2CO3 (TCB) composites showed enhanced photocatalytic removal of tetracycline (TC), which is greater than pure Bi2O2CO3, CuBi2O4, TiO2 and binary composites. The TCB-20 composite exhibited the best photo-degradation efficiency of TC (82% at 60 min) and maintained a higher stability after four consecutive cycles. Additionally, a dual Z-scheme photocatalytic mechanism with highly efficient and fast electron transfer was proposed, which prominently improves the photocatalytic performance. This work reports an integrated structure of a dual Z-scheme heterojunction that plays an important role in the degradation of tetracycline.
期刊介绍：
The Journal of Materials Science publishes reviews, full-length papers, and short Communications recording original research results on, or techniques for studying the relationship between structure, properties, and uses of materials. The subjects are seen from international and interdisciplinary perspectives covering areas including metals, ceramics, glasses, polymers, electrical materials, composite materials, fibers, nanostructured materials, nanocomposites, and biological and biomedical materials. The Journal of Materials Science is now firmly established as the leading source of primary communication for scientists investigating the structure and properties of all engineering materials.
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