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      Design and fabrication of carbon dots for energy conversion and storage

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          This review covers the recent advances of carbon dots for versatile energy-oriented applications.


          The emergence of carbon dots (CDs) has opened up an exciting new field in the science and technology of carbon nanomaterials and has attracted increasing interest in recent years. Due to their diverse physicochemical properties and favourable attributes, such as quantum confinement effects and abundant surface defects, CDs and their derived hybrids have shown exciting and indispensable prospects in the energy conversion and storage fields. Considering the latest developments, in this review, we comprehensively summarize the classification and structure of CDs. Three strategies for structural engineering of CDs are presented and analyzed, in terms of the tuning of size and crystallinity, and the methodologies for surface modification and heteroatom doping, with a focus on the relationship among the synthesis methods, structure and properties of the concerned CDs. More importantly, the recent advances in energy-oriented applications of CDs, including photo- and electro-catalysis, light-emitting diodes, photovoltaic cells, lithium/sodium ion batteries and supercapacitors, will be systematically highlighted. Finally, we discuss and outline the remaining major challenges and opportunities for CDs in the future.

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          Solid-state light sources getting smart.

          More than a century after the introduction of incandescent lighting and half a century after the introduction of fluorescent lighting, solid-state light sources are revolutionizing an increasing number of applications. Whereas the efficiency of conventional incandescent and fluorescent lights is limited by fundamental factors that cannot be overcome, the efficiency of solid-state sources is limited only by human creativity and imagination. The high efficiency of solid-state sources already provides energy savings and environmental benefits in a number of applications. However, solid-state sources also offer controllability of their spectral power distribution, spatial distribution, color temperature, temporal modulation, and polarization properties. Such "smart" light sources can adjust to specific environments and requirements, a property that could result in tremendous benefits in lighting, automobiles, transportation, communication, imaging, agriculture, and medicine.
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            Carbon Quantum Dots and Their Derivative 3D Porous Carbon Frameworks for Sodium-Ion Batteries with Ultralong Cycle Life.

            A new methodology for the synthesis of carbon quantum dots (CQDs) for large production is proposed. The as-obtained CQDs can be transformed into 3D porous carbon frameworks exhibiting superb sodium storage properties with ultralong cycle life and ultrahigh rate capability, comparable to state-of-the-art carbon anode materials for sodium-ion batteries.
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              Heterogeneous nanocarbon materials for oxygen reduction reaction


                Author and article information

                Chemical Society Reviews
                Chem. Soc. Rev.
                Royal Society of Chemistry (RSC)
                April 15 2019
                : 48
                : 8
                : 2315-2337
                [1 ]School of Chemical Engineering and Technology
                [2 ]Xi'an Jiaotong University
                [3 ]Xi'an 710049
                [4 ]P. R. China
                [5 ]Liaoning Key Lab for Energy Materials and Chemical Engineering
                [6 ]School of Chemical Engineering
                [7 ]State Key Lab of Fine Chemicals
                [8 ]Dalian University of Technology
                [9 ]Dalian 116024
                [10 ]Department of Chemistry and Laboratory for Emerging Materials & Technology
                [11 ]Clemson University
                [12 ]Clemson
                [13 ]USA
                © 2019


                Self URI (article page): http://xlink.rsc.org/?DOI=C8CS00750K


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