Abstract
Undoubtedly, carbon-based (nano)composites can be promising photocatalysts with improved photocatalytic activity due to the coupling effect from the incorporation of carbon species. In this mini-review, we focus on the recent development of photocatalysts based on carbon-based (nano)composites. TiO2 is well-known as a typical photocatalyst. Special attention is paid to the various types of carbon–TiO2 composites such as C-doped TiO2, N–C-doped TiO2, metal–C-doped TiO2, and other co-doped C/TiO2 composites. Various synthetic strategies including the solvothermal/hydrothermal method, sol–gel method, and template-directed method are reviewed for the preparation of carbon-based TiO2 composites. C/graphitic carbon nitride (g-C3N4) composites and ternary C-doped composites are also summarized and ascribed to the unique electronic structure of g-C3N4 and the synergistic effect of the ternary interfaces, respectively. In the end, we put forward the future perspective of the photocatalysts containing carbon species based on our knowledge.
Highlights
Photocatalysis has been widely used in many applications such as water splitting [1], energy conversion [2,3,4], and environmental remediation [5]
The C-doped ZnO nanofibers possessed a much light irradiation, which was attributed to the formation of the new energy states in ZnO because of higher photocatalytic degradation rate of rhodamine B (RhB) compared with the pure ZnO nanofibers under visible the carbon doping, which might reduce the band gap of the ZnO
We summarized the recent advances on the synthesis, photocatalytic properties, and potential applications of photocatalysts based on carbon-basedcomposites
Summary
Photocatalysis has been widely used in many applications such as water splitting [1], energy conversion [2,3,4], and environmental remediation [5]. Various materials including metal oxides [9,10,11], metal sulfides [12,13,14], graphitic carbon nitride (g-C3 N4 ) [15,16,17], and composites [18,19,20] have been reported as photocatalysts. Photocatalysts containing carbon species have been hot research materials for potential applications in environmental and energy fields. This current mini-review gives an overview of the synthesis and photocatalytic properties of photocatalysts containing carbon species, especially C-doped TiO2. We expect that this review would catch a glimpse of the current developments of these photocatalysts containing carbon species
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