Seen left to right) Mr. Lertluck Leela-amornsin, Tech Strategy and Innovation Director of the robot developer Obodroid; Mr. Polnut Chalermwan, CEO of Obodroid and Obotrons, a leader in systems integration; Ms. Piyatida Itiravivongs, President of Thailand Huawei Cloud Business Department, Huawei Technologies (Thailand) Co., Ltd; and Mr. Weifeng Chen, Global Partner Development & Alliance Department Director of Huawei Technologies Co., Ltd, at “Powering Digital Thailand 2022 Huawei Cloud and Connect Asia-Pacific Innovation Day”, showcasing innovations in Cloud, 5G, and AI.
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IMAGE: A schematic illustration of the synthesis of GQDs with different stratagies and their applications in the domain of biosensors. view more
Credit: Authors
In a paper published in
NANO, researchers from Hubei, China discuss the top-down and bottom-up strategies for the synthesis of Graphene quantum dots (GQDs). The respective advantages and disadvantages of these methods are summarized. With regard to some important or novel ones, the mechanisms are proposed for reference. In addition, the application of GQDs in biosensors is highlighted in detail.
At present, various top-down methods, such as oxidative cutting, hydrothermal or solvothermal reactions, electrochemical oxidation, ultrasonic-assisted or microwave-assisted process, chemical vapor deposition (CVD) have been reported to produce GQDs. Meanwhile, the bottom-up methods have been developed rapidly, which mainly include carbonization methods and stepwise organic synthesis. Owing to excellent photo