Journal ArticleDOI
Carbon quantum dots and applications in photocatalytic energy conversion.
K. A. Shiral Fernando,Sushant Sahu,Yamin Liu,William K. Lewis,Elena A. Guliants,Amirhossein Jafariyan,Ping Wang,Christopher E. Bunker,Ya-Ping Sun +8 more
TLDR
This article highlights carbon dots, which are small carbon nanoparticles with some form of surface passivation, and graphene quantum dots in various configurations by focusing on their syntheses, on their photoexcited state properties and redox processes, and on their applications as photocatalysts in visible-light carbon dioxide reduction and in water-splitting.Abstract:
Quantum dots (QDs) generally refer to nanoscale particles of conventional semiconductors that are subject to the quantum-confinement effect, though other nanomaterials of similar optical and redox properties are also named as QDs even in the absence of strictly defined quantum confinement. Among such nanomaterials that have attracted tremendous recent interest are carbon dots, which are small carbon nanoparticles with some form of surface passivation, and graphene quantum dots in various configurations. In this article, we highlight these carbon-based QDs by focusing on their syntheses, on their photoexcited state properties and redox processes, and on their applications as photocatalysts in visible-light carbon dioxide reduction and in water-splitting, as well as on their mechanistic similarities and differences.read more
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Recent progress in carbon quantum dots: synthesis, properties and applications in photocatalysis
TL;DR: In this paper, the authors discuss the challenges and future direction of CQD-based materials in this booming research field, with a perspective toward the ultimate achievement of highly efficient and long-term stable carbon quantum dot-based photocatalysts.
Journal ArticleDOI
Smart Utilization of Carbon Dots in Semiconductor Photocatalysis.
TL;DR: Carbon dots have emerged as a promising new class of metal-free photocatalyst, displaying semiconductor-like photoelectric properties and showing excellent performance in a wide variety of photoelectrochemical and photocatalytic applications owing to their ease of synthesis.
Journal ArticleDOI
Shining carbon dots: Synthesis and biomedical and optoelectronic applications
TL;DR: In this paper, the authors reviewed the latest researches on the synthesis, structure, optical and electronic properties of CDs as well as their advanced applications in biomedicine and optoelectronics.
Journal ArticleDOI
Photoanodes based on TiO2 and α-Fe2O3 for solar water splitting – superior role of 1D nanoarchitectures and of combined heterostructures
Stepan Kment,Francesca Riboni,Francesca Riboni,Šárka Paušová,Lei Wang,Lingyun Wang,Hyungkyu Han,Zdenek Hubicka,Josef Krysa,Patrik Schmuki,Patrik Schmuki,Patrik Schmuki,Radek Zboril +12 more
TL;DR: Various synthetic methods and modifying concepts of 1D-photoanodes (nanotubes, nanorods, nanofibers, nanowires) based on titania, hematite, and on α-Fe2O3/TiO2 heterostructures, for PEC applications are described.
Journal ArticleDOI
Emerging applications of biochar-based materials for energy storage and conversion
TL;DR: In this paper, a review of recent advances in the applications of biochar-based materials in various energy storage and conversion fields, including hydrogen storage and production, oxygen electrocatalysts, emerging fuel cell technology, supercapacitors, and lithium/sodium ion batteries, are summarized, highlighting the mechanisms and open questions in current energy applications.
References
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A metal-free polymeric photocatalyst for hydrogen production from water under visible light
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Quantum-sized carbon dots for bright and colorful photoluminescence.
Ya-Ping Sun,Bing Zhou,Yi Lin,Wei Wang,K. A. Shiral Fernando,Pankaj Pathak,Mohammed J. Meziani,Barbara A. Harruff,Xin Wang,Haifang Wang,Pengju G. Luo,Hua Yang,Muhammet E. Köse,Bailin Chen,L. Monica Veca,Su-Yuan Xie +15 more
TL;DR: It is reported that nanoscale carbon particles (carbon dots) upon simple surface passivation are strongly photoluminescent in both solution and the solid state.
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Graphene oxide as a chemically tunable platform for optical applications
TL;DR: This Review highlights the recent advances in optical properties of chemically derived GO, as well as new physical and biological applications that are attracting chemists for its own characteristics.