The core-shell structure of C/BiOBr@Co-MOF for efficient degradation of organic dyes under visible light

Abstract

In recent years, with the vigorous development of light industry, textile, printing and dyeing industries, industrial wastewater containing organic dyes has brought serious water pollution. Therefore, it is urgent to develop a lightweight technology for efficiently removing organic dyes from wastewater. In this study, a novel core-shell C/BiOBr@Co-MOF photocatalyst was successfully prepared by one-pot method. Biomass carbon microspheres were introduced to construct growth carriers as central nuclear materials. This measure provides a reasonable strategy for improving the photocatalytic performance of BiOBr. The prepared C/BiOBr@Co-MOF regulates the size of the material from the nanometer scale. The two-dimensional flaky BiOBr grows uniformly on the surface of the carbon microspheres, and the Co-MOF grains are densely wrapped on the surface. The two work together as a shell to fully expand the contact surface with the pollutants and the active sites. C/BiOBr@Co-MOF can achieve rapid photocatalytic degradation of MB within 30 min under visible light, and the degradation rate is 96 %.