Recent advances and rational design strategies of carbon dots towards highly efficient solar evaporation

Abstract

Solar evaporation using photothermal materials is an environmentally friendly and feasible solution to overcome the water scarcity issue by utilizing the abundant solar energy source. Some key points for efficient...

Recent developments of hydrogel based solar water purification technology

“…As the youngest carbon nanomaterials, carbon dots (CDs) 132–134 have attracted attention due to their broad light absorption spectrum (200–800 nm) and high photothermal conversion efficiency (>90%), so that CDs can meet the requirements of solar absorbers. 135 To further improve the performance of CDs for solar water purification, future development directions include structure adjustment and surface group modification without lowering crystallinity or wetting properties.…”

Synthesis, optical properties and applications of red/near-infrared carbon dots

“…Although many review articles have summarized the most recent synthesis methods to obtain different types of C-dots with excellent optical properties, and their use in bio-application and energy conversion, there is still a small number of reviews focusing on red/NIR colloidal C-dots and their applications in different fields. 19,20,22,23,25,26,29,30,40,42,47,52,53,58,59,66,72,73,75,84,[110][111][112][113][114][115][116][117][118][119][120][121][122][123][124][125] Here, we aim to provide a comprehensive overview of the synthesis, the fluorescence mechanism and, finally, of the applications of red/NIR crystalline C-dots. In the following sections, we will provide a comprehensive review of the synthesis and optical properties (Section 2), exciton dynamics (Sections 3), and applications (Section 4) of red/NIR C-dots.…”

“…27–35 Thanks to the above-mentioned properties, C-dots have been widely used as building blocks for the design of new types of solar cells, catalysts, LSCs, LEDs and bio-applications, such as deep-tissue imaging, biosensing, nanothermometry, and biomedicine (see Scheme 1). 18,20,22–25,27–30,32,33,36–91…”

Photoexcited State Properties of Poly(9-vinylcarbazole)-Functionalized Carbon Dots in Solution versus in Nanocomposite Films: Implications for Solid-State Optoelectronic Devices

“…The analogous phenomenon was also found in the study of defective carbon nanotubes, which should not be surprising because carbon nanotubes of structural and end defects could be considered as being equivalent to the nanotubes decorated with small carbon nanoparticles. , The defect sites on carbon nanotubes were used for the chemical functionalization of the nanotubes, which was accompanied by the interesting finding that the functionalized carbon nanotubes could exhibit bright visible fluorescence emissions, − completely different from the band gap fluorescence found and reported a few years later. − The visible fluorescence in the functionalized carbon nanotubes was attributed to the emissive excited states associated with the energy trapping defect sites that might be stabilized by the passivation effects due to the chemical functionalization. − The same functionalization was applied to small carbon nanoparticles, which resulted in the finding of carbon “quantum” dots or carbon dots (CDots, Figure ). ,, In addition to their intense and multicolor fluorescence emissions, CDots have been explored for their unique/advantageous photoexcited state properties and redox characteristics, with their actively pursued technological applications across all those commonly targeted by the use of traditional molecular dyes, conventional semiconductor quantum dots, and other photoactive nanomaterials. ,− …”