镍改性酚醛树脂热解形成石墨烯机理研究  

Study on the mechanism of graphene formation by pyrolyzation of phenolic resin modified Ni

作　　者：卓智华 伍林[1] 孟向楠[1] 童坤[1] 乐晨[1] 马沛燃 易德莲[1] 李亚伟[1] 

机构地区：[1]武汉科技大学应用化学研究所,武汉430081

出　　处：《化工新型材料》2016年第8期87-89,共3页New Chemical Materials

基　　金：国家自然科学基金(51372176)

摘　　要：通过配位反应,将镍离子引入酚醛树脂结构中,在惰性气氛保护下制备镍改性酚醛树脂,并将其分别在600、800、1000℃下进行碳化处理。XRD检测结果表明:600℃时热解碳出现明显的C(002)晶面衍射峰;当温度升高(800、1000℃)时,半峰宽增大,峰位左移,峰强度减小。SEM和TEM的检测结果表明,即使在1000℃下,普通酚醛树脂热解碳仍为无定形碳,而温度高于800℃后镍改性酚醛树脂热解碳中生成石墨烯,且升温和增大催化剂用量均有利于石墨烯生成。镍改性酚醛树脂炭化形成石墨烯的过程遵循"溶碳析碳机制"。Through coordination reaction, nickel ion was introducted into the structure of phenolic resin. Phenolic resin modified by nickel was pyrolyzed at 600℃ ,800 ℃ and 1000℃ in argon atmosphere, respectively. XRD testing results showed that during the pyrolysis of as-received resin,obvious graphite （002） diffraction peak appeared in pyrolytic carbon carbonized at 600℃. With the increase of temperature up to 800℃ and 1000℃, its half-peak width increased with peak position shifting to the left, but its peak intensity weakens. SEM and TEM results showed that grapheme nanosheets （GNs） began to form in pyrolyzed carbon of resin modified by nickel after treatment at 800℃ while only amorphous carbon was detected for traditional phenolic resin even treating at 1000℃. And with the increase in treating temperature,a great deal of GNs were produced in the pyrolytic carbon. It was proposed that formation mechanism of GNs was followed by carbon dissolution-precipitation.

关 键 词：镍改性酚醛树脂 热解 石墨烯 机理 

分 类 号：O613.71[理学—无机化学]