A Review of Advances in Graphene Quantum Dots: From Preparation and Modification Methods to Application
Author:
Cui Yibo1ORCID, Liu Luoyi1, Shi Mengna12, Wang Yuhao3, Meng Xiaokai4, Chen Yanjun2, Huang Que125ORCID, Liu Changcheng12ORCID
Affiliation:
1. School of Environment and Safety Engineering, North University of China, Taiyuan 030051, China 2. Institute of Advanced Energy Materials and Systems, North University of China, Taiyuan 030051, China 3. Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, China 4. State Grid Shanxi Electric Power Research Institute, Taiyuan 030001, China 5. School of Resources and Safety Engineering, Central South University, Changsha 410010, China
Abstract
Graphene quantum dot (GQD) is a new type of carbon nanometer material. In addition to the excellent properties of graphene, it is superior due to the quantum limit effect and edge effect. Because of its advantages such as water solution, strong fluorescent, small size, and low biological toxicity, it has important application potential in various fields, especially in sensors and biomedical areas, which are mainly used as optical electrical sensors as well as in biological imaging and tumor therapy. In addition, GQDs have very important characteristics, such as optical and electrical properties. There are many preparation methods, divided into top-down and bottom-up methods, which have different advantages and disadvantages, respectively. In addition, the modification methods include heterogeneous doping, surface heterogeneity, etc. There are still many challenges in developing GQDs. For example, the synthesis steps are still hard to conduct, but as the inquiry continues to deepen, GQDs will be revolutionary materials in the future. In this work, the literature concerning research progress on GQDs has been reviewed and summarized, while the key challenges of their application have been pointed out, which may bring new insights to the application of GQDs.
Funder
National Natural Science Foundation of China China Postdoctoral Science Foundation Natural Science Foundation of Hunan Province Shanxi Scholarship Council of China Fundamental Re-search Program of Shanxi Province Scientific Activities of Selected Returned Overseas Professionals in Shanxi Province Opening Foundation of Key Laboratory in North University of China Changsha Municipal Natural Science Foundation
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