熔盐法制备石墨化碳纳米片
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摘要
以二氨基马来腈为原料、氯化铁为催化剂前驱体、ZnCl2-KCl为熔盐介质,采用熔盐法制备石墨化碳纳米片,研究了反应温度和熔盐/反应物质量比(盐料比)对产物物相组成、显微结构和石墨化程度的影响。结果表明:随着反应温度的升高和盐料比的增加,产物的石墨化程度增大,片状结构的占比增大;当反应温度为1 000℃、盐料比为40∶1时,制备得到了石墨化碳纳米片,其直径为2~10μm,厚度为30nm。
Graphitized carbon nanosheets were prepared by molten salt method with diaminomaleonitrile as raw material,iron trichloride as catalyst precursor,and ZnCl_2-KCl as molten salt medium.The effects of reaction temperature and salt to reactant mass ratio on the phase composition,microstructure and degree of graphitization of the product were investigated.The results show that the degree of graphitization and the proportion of flake structure in the product increased with the increase of reaction temperature and salt to reactant mass ratio.When the reaction temperature was 1 000 ℃ and the salt to reactant mass ratio was 40∶1,the graphitized carbon nanosheets with diameter of 2-10μm and thickness of 30 nm were obtained.
Graphitized carbon nanosheets were prepared by molten salt method with diaminomaleonitrile as raw material,iron trichloride as catalyst precursor,and ZnCl_2-KCl as molten salt medium.The effects of reaction temperature and salt to reactant mass ratio on the phase composition,microstructure and degree of graphitization of the product were investigated.The results show that the degree of graphitization and the proportion of flake structure in the product increased with the increase of reaction temperature and salt to reactant mass ratio.When the reaction temperature was 1 000 ℃ and the salt to reactant mass ratio was 40∶1,the graphitized carbon nanosheets with diameter of 2-10μm and thickness of 30 nm were obtained.
引文
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[3]YANG Z,XU X,LIANG X,et al.MIL-53(Fe)-graphene nanocomposites:Efficient visible-light photocatalysts for the selective oxidation of alcohols[J].Applied Catalysis B:Environmental,2016,198:112-123.
[4]GEORGAKILAS V,TIWARI J N,KEMP K C,et al.Noncovalent functionalization of graphene and graphene oxide for energy materials,biosensing,catalytic,and biomedical applications[J].Chemical Reviews,2016,116(9):5464-5519.
[5]XU W,XIE W,HUANG X,et al.The graphene oxide and chitosan biopolymer loads TiO2 for antibacterial and preservative research[J].Food Chemistry,2016,221:267-277.
[6]YOON J,LEE T,BAPURAO G B,et al.Electrochemical H2O2biosensor composed of myoglobin on MoS2nanoparticlegraphene oxide hybrid structure[J].Biosensors&Bioelectronics,2017,93:14-20.
[7]USTAVYTSKA O,KURYS Y,KOSHECHKO V,et al.One-step electrochemical preparation of multilayer graphene functionalized with nitrogen[J].Nanoscale Research Letters,2017,12(1):175.
[8]NGUYEN B H,NGUYEN V H.Promising applications of graphene and graphene-based nanostructures[J].Advances in Natural Sciences:Nanoscience&Nanotechnology,2016,7(2):023002.
[9]钟继鸣,王新营,郁铭芳,等.石墨化碳泡沫导热性能研究[J].材料导报,2006,20(专辑Ⅵ):268-270.
[10]张昌鸣.新型高效液相色谱固定相——多孔石墨化碳[J].色谱,1992(2):78-81.
[11]靳权,刘应亮,武拥建,等.低温催化法制备石墨化碳空心球[J].化学进展,2012,24(1):39-46.
[12]JIN Z,MCNICHOLAS T P,SHIH C J,et al.Click chemistry on solution-dispersed graphene and monolayer CVD graphene[J].Chemistry of Materials,2011,23(14):3362-3370.
[13]TOMASEVIC-ILIC T,PESIC J,MILOSEVIC I,et al.Transparent and conductive films from liquid phase exfoliated graphene[J].Optical and Quantum Electronics,2016,48(6):319.
[14]ZHOU T,CHEN F,LIU K,et al.A simple and efficient method to prepare graphene by reduction of graphite oxide with sodium hydrosulfite[J].Nanotechnology,2011,22(4):045704.
[15]TIAN L,LI J,LIANG F,et al.Molten salt synthesis of tetragonal carbon nitride hollow tubes and their application for removal of pollutants from wastewater[J].Applied Catalysis B:Environmental,2018,225:315-321.
[16]LIU X,GIORDANO C,ANTONIETTI M.A facile moltensalt route to graphene synthesis[J].Small,2014,10(1):193-200.
[17]LIU X,ANTONIETTI M.Molten salt activation for synthesis of porous carbon nanostructures and carbon sheets[J].Carbon,2014,69(2):460-466.
[18]TATEMOTO K,ONO Y,SUZUKI R O.Silicide coating on refractory metals in molten salt[J].Journal of Physics&Chemistry of Solids,2005,66(2/3/4):526-529.