热处理温度对类球形磺化石墨烯微结构的影响  

Effect of heat treatment temperature on the microstructure of spherical sulfonated graphene particles

作　　者：邹泽玉 涂川俊[1] 鲜勇 洪莉睿 刘田华 蒋永华 ZOU Ze-yu;TU Chuan-jun;XIAN Yong;HONG Li-rui;LIU Tian-hua;JIANG Yong-hua(School of Materials Science and Engineering,Hunan University,Changsha 410082,China;School of Materials Engineering,Chengdu Technological University,Chengdu 611730,China;Shandong Shuntian Carbon Technology Research and Development Ltd.,Jinan 250400,China;Suzhou Gaotong New Material Technology Ltd.,Suzhou 215000,China)

机构地区：[1]湖南大学材料科学与工程学院,湖南长沙410082 [2]成都工业学院材料工程学院,四川成都611730 [3]山东舜天炭素科技研发有限公司,山东济南250400 [4]苏州高通新材料科技有限公司,江苏苏州215123

出　　处：《新型炭材料》2020年第2期148-154,共7页New Carbon Materials

基　　金：国家自然科学基金(51772081,51837009);湖南省自然科学基金(2016JJ2024).

摘　　要：以非晶态高分子聚合物为碳源,在特定温度的苯磺酸溶液中,一次性脱氢及同步自缩聚制备磺化石墨烯悬浊液,再经喷雾式干燥制得类球形磺化石墨烯颗粒。采用SEM、TEM、BET、FT-IR、Raman和XRD等表征手段对不同热处理温度下的磺化石墨烯颗粒进行表征;研究类球形磺化石墨烯在750、1 500和2 500℃热处理后的形貌及结构变化;考察不同热处理温度对其表面特性和结晶程度的影响。结果表明,球形磺化石墨烯颗粒的直径尺寸随着热处理温度的升高而逐渐减小,ID/IG值先升高后降低,Lc值由1.55 nm(未热处理)升高到8.08 nm(2 500℃),微晶堆叠厚度增加,结晶程度提高,结构由无序向有序化转变。Sulfonated graphene was prepared by heat treating a mixture of polyvinyl chloride and benzenoic acid( 4 ∶1 wt/wt) first at 130 ℃ for 4 h and then at 180 ℃ for 12 h. The sulfonated graphene( 10 wt%) suspension was spay-dried to obtain spherical sulfonated graphene particles. The morphology and structure of the spherical particles before and after heat treatment at 750,1 500 and2 500 ℃( HTT) were characterized by SEM,TEM,BET,FT-IR,Raman and XRD. Results indicate that the diameters of the particles decrease gradually with increasing HTT,their ID/IG values first increase and then decrease,and the Lc values increase from1.55( unheated) to 8.08 nm( 2 500 ℃) . The crystallinity and layer thickness of the graphene increase with increasing HTT and the spherical morphology is retained after the heat treatment at 2 500 ℃.

关 键 词：磺化石墨烯 热处理 球形结构 喷雾干燥 结晶程度 

分 类 号：TQ127.11[化学工程—无机化工]