Co3O4–C3N4 p–n nano-heterojunctions for the simultaneous degradation of a mixture of pollutants under solar irradiation
MetadataShow full item record
Environmental remediation employing sunlight-active semiconductor nano-heterostructures provides effective solutions for handling emerging contaminants through a greener approach. Herein, we report the creation of ultrafine dispersions of Co3O4 nanoparticles in a g-C3N4 matrix by a simple one-pot synthetic strategy involving the co-pyrolysis of constituent raw materials. Calcination of a homogeneous mixture of melamine and cobalt nitrate at 550 °C/2 h leads to the formation of Co3O4-C3N4 p-n nano-heterojunctions that displayed extended absorption in the visible wavelength region owing to the synergistic role of Co3O4 particles. Moreover, the surface area values of the composites reached 90 m2 g-1, a tenfold increase from the value of 8 m2 g-1 obtained for the pristine C3N4. The band bending, induced by the p-n nano-heterojunctions, leads to the formation of intimate interfaces having enhanced photophysical properties. The mass normalized photoluminescence spectra of the heterojunctions indicated reduced exciton recombinations that are validated further by the enhanced sunlight-induced photocatalytic degradation of a mixture of methylene blue and tetracycline organic pollutants.
Showing items related by title, author, creator and subject.
Yu, C.; Yang, K.; Yu, J.; Cao, F.; Li, Xin Yong; Zhou, X. (2011)A series of Bi2WO6/ZnO heterojunction photocatalysts with different Bi2WO6 concentrations (1wt%, 2wt%, 4wt%, 8wt%) were prepared by hydrothermal method at different temperatures(120°C -220°C ). The prepared pure ZnO, ...
Microstructural design and properties of high performance recycled cellulose fibre reinforced polymer eco-nanocompositesAlamri, Hatem Rashed (2012)In recent years, cellulose fibre-reinforced polymer composites have been gaining a great attention in several engineering applications due to their desirable properties, which include low density, low cost, renewability ...
Fabrication of Cu2O/TiO2 nanotube heterojunction arrays and investigation of its photoelectrochemical behaviorHou, Y.; Li, Xin Yong; Zhao, Q.; Quan, X.; Chen, G. (2009)Cu2O/TiO2 nanotube heterojunction arrays have been prepared by photoreduction depositing Cu2O nanoparticles on TiO 2 nanotube arrays. The heterojunction arrays show uniformly distributed Cu2O nanoparticles, and high ...