High-Temperature Carbonization of Humic Acids and a Composite of Humic Acids with Graphene Oxide

被引：5
作者：
Baskakov, S. A. [1 ]
Lobach, A. S. [1 ]
Vasil'ev, S. G. [1 ]
Dremova, N. N. [1 ]
Martynenko, V. M. [1 ]
Arbuzov, A. A. [1 ]
Baskakova, Yu. V. [1 ]
Volodin, A. A. [1 ]
Volkov, V. I. [1 ]
Kazakov, V. A. [2 ]
Shul'ga, Yu. M. [3 ]
机构：
[1] Russian Acad Sci, Inst Problems Chem Phys, Pr Akad Semenova 1, Chernogolovka 142432, Moscow Oblast, Russia
[2] Keldysh Res Ctr, Onezhskaya Ul 8, Moscow 125438, Russia
[3] Natl Univ Sci & Technol MISiS NITU MISiS, Leninskii Pr 4, Moscow 119049, Russia
来源：
HIGH ENERGY CHEMISTRY | 2016年 / 50卷 / 01期
基金：
俄罗斯基础研究基金会;
关键词：
GRAPHITE OXIDE; C-13; NMR; EXFOLIATION; REDUCTION;
D O I：
10.1134/S0018143916010021
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Humic acids (HAs) isolated from high-moor peat have been studied by magic-angle spinning solid-state nuclear magnetic resonance (NMR) spectroscopy, differential scanning calorimetry (DSC), thermogravimetry (TG), and Raman spectroscopy. A composite of HAs with graphene oxide (GO) has been prepared for the first time, and the thermal carbonization (900 degrees C) of both HAs and the HA-GO composite has been carried out. With the use of mass spectrometry, it has been found that CO2 and H2O molecules are mainly released from HAs into the gas phase at a low temperature (to 150 degrees C). At higher temperatures, carbon monoxide and different low-molecular-weight hydrocarbons also begin to be released. From microscopic examinations, it follows that HA forms small agglomerates with sharply outlined edges as a result of carbonization, whereas the composite forms only large aggregates.
引用
收藏
页码：43 / 50
页数：8
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