Green Preparation of Few‐Layer Graphene Sheet Materials Using Naturally Occurring Calcium Carbonate and Plant Leaves. Issue 25 (2nd July 2020)

• Record Type: Journal Article
• Authors: Xing, Baoyan; Zhao, Jianguo; Pan, Qiliang; Yang, Hui; Wang, Lihua; Qu, Wenshan; Gu, Ling; Wang, Haiqing; Han, Peide; Ma, Guibin
• Is Part Of: ChemistrySelect. Volume 5:Issue 25(2020)
• Page Start: 7517
• Page End: 7520
• Publication Date: 2020-07-02
• Subjects: Graphene sheets -- Plant leaves -- Calcium carbonate -- Green preparation; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.202000731
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: Graphene sheets were prepared by calcination of calcium carbonate with plant leaves under the protection of an argon gas atmosphere. This is an environmentally friendly approach to produce graphene. Calcium carbonate decomposes with the evolution of carbon dioxide at high temperature, which is reduced into graphene by the magnesium from plant leaves. The formation mechanism of graphene is discussed in detail. The synthesized graphene sheets were characterized by scanning electron microscopy (SEM), X‐ray diffraction (XRD), and Raman spectroscopy. Calcium carbonate and plant leaves are readily available and inexpensive natural resources, and this new methodology can be applied for large‐scale graphene production in industry. Abstract : A few layers of graphene sheets were prepared by calcination of calcium carbonate with plant leaves (mainly chlorophyll containing organometallic magnesium) under an argon gas atmosphere. Calcium carbonate releases carbon dioxide at high temperature, meanwhile chlorophyll decomposes with the generation of magnesium metal. The carbon dioxide is reduced into graphene by synchronous formation of magnesium metal from different plant leaves.