Chemical Industry and Engineering Progress ›› 2024, Vol. 43 ›› Issue (11): 6317-6326.DOI: 10.16085/j.issn.1000-6613.2023-1745

• Materials science and technology • Previous Articles    

Preparation of carbon nanotube-graphene composite aerogel and evaluation of photothermal assisted oil absorption performance

GUO Qilin(), GUO Shi, ZHANG Yingbo, PAN Yiyong, CHEN Zhikang, CHEN Shuang, LIU Hui’e(), SHEN Qi, GUO Rongrong   

  1. College of Chemistry and Chemical Engineering, China University of Petroleum, Qingdao 266580, Shandong, China
  • Received:2023-10-07 Revised:2023-11-19 Online:2024-12-07 Published:2024-11-15
  • Contact: LIU Hui’e

碳纳米管/石墨烯复合气凝胶的制备与光热辅助吸油性能评价

郭启麟(), 郭适, 张瀛博, 潘宜勇, 陈志康, 陈爽, 刘会娥(), 申琦, 郭蓉蓉   

  1. 中国石油大学(华东)化学化工学院,山东 青岛 266580
  • 通讯作者: 刘会娥
  • 作者简介:郭启麟(1998—),男,博士研究生,研究方向为废弃资源有效利用、材料化学。E-mail:1823119018@qq.com
  • 基金资助:
    国家自然科学基金(22078366)

Abstract:

Graphene oxide (GO) and carboxylated multi-walled carbon nanotubes (MWCNTs/COOH) were used as raw materials for the preparation of Pickering emulsion, which was used as a soft template for the synthesis of carbon nanotubes/graphene composite aerogel (CNTs/STRGA) with "droplet-like" pore structure and large pore volume. The photothermal conversion performance of the materials was improved by introducing MWCNTs/COOH. By adjusting the mass ratio between GO and MWCNTs/COOH, oil/water ratio and hydrothermal reduction time, a series of CNTs/STRGAs with different properties were obtained. The prepared materials were characterized using scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS), Raman spectrometer and Fourier transform infrared spectrometer (FTIR) to analyze their internal structure and chemical properties. A UV visible near-infrared spectrophotometer and a microcomputer controlled electronic universal testing machine were used to evaluate the light absorbance and mechanical properties of materials. The results showed that MWCNTs/COOH could significantly improve the light absorbance (95.2%) and photo-thermal conversion performance of the material, and the surface of the material could be heated to 130℃ under 1 sun illumination. The photothermal oil adsorption rate of the material was significantly enhanced, 6.88g/(g·min), and its adsorption capacity reached 130.66g/g.

Key words: Pickering emulsion, graphene, aerogel, carbon nanotubes, photothermal-adsorption

摘要:

以氧化石墨烯(GO)、羧基化多壁碳纳米管(MWCNTs/COOH)为原料制备Pickering乳液,并以其为软模板合成具有“液滴状”孔道结构和大孔隙体积的碳纳米管/石墨烯复合气凝胶(CNTs/STRGA)。通过引入MWCNTs/COOH的方式,提高材料的光热转换性能。调整GO与MWCNTs/COOH的质量比、油水比、水热还原时间,得到一系列不同性质的CNTs/STRGAs。通过扫描电子显微镜(SEM)、X射线光电子能谱(XPS)、拉曼光谱仪(Raman)和傅里叶变换红外光谱仪(FTIR)对所制备的材料进行表征。采用紫外-可见-近红外分光光度计、微机控制电子万能试验机评价材料的吸光能力和机械性能。结果表明,MWCNTs/COOH能显著提高材料的吸光度(95.2%)和光热转换性能,材料上表面通过光热转换可升温至130℃,材料的光热-吸油速率会明显提升,可达6.88g/(g·min),其吸附容量可达130.66g/g。

关键词: Pickering乳液, 石墨烯, 气凝胶, 碳纳米管, 光热-吸附

CLC Number: 

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