Page 76 - 《精细化工》2020年第8期

第 37 卷第 8 期 精 细 化 工 Vol.37, No.8
202 0 年 8 月 FINE CHEMICALS Aug. 2020

功能材料
钨掺杂二氧化钒/石墨烯复合物的制备及性能

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周天滋，周俏婷，华 悦，黄春波，厉良普，吕维忠
（深圳大学 化学与环境工程学院，广东 深圳 518071）

摘要：以氧化石墨烯粉末（GO）、五氧化二钒、草酸和钨酸铵为原料，用水热法制备了一系列钨掺杂二氧化钒/
石墨烯复合物，考察了钨掺杂量、氧化石墨烯用量对复合材料的相变温度及导热率的影响。通过 XRD、SEM、
DSC、FTIR、激光导热系数测量仪对复合材料的结构形貌、相变性能进行了表征。结果表明，石墨烯复合材料
的二氧化钒粒子团聚情况得到有效改善，并均匀负载在石墨烯表面。当钨原子百分含量为 2.5%、氧化石墨烯含
量为 4%（以五氧化二钒质量为基准）时，形成的钨掺杂二氧化钒/石墨烯复合物与纯二氧化钒相比，相变温度
由 66.0 ℃降低到 32.2 ℃，导热率提升到 16.341 W/(m·K)。该复合材料能同时满足良好的隔热性与高导热性等
要求。
关键词：石墨烯；二氧化钒；钨掺杂；智能隔热；散热性；功能材料
中图分类号：TQ630 文献标识码：A 文章编号：1003-5214 (2020) 08-1574-06

Preparation and properties of tungsten-doped vanadium
dioxide/graphene composites

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ZHOU Tianzi, ZHOU Qiaoting, HUA Yue, HUANG Chunbo, LI Liangpu, LÜ Weizhong
（College of Chemical and Environmental Engineering, Shenzhen University, Shenzhen 518071, Guangdong, China）

Abstract: A series of tungsten-doped vanadium dioxide/graphene composites were prepared by
hydrothermal method using graphene oxide powder (GO), vanadium pentoxide, oxalic acid and ammonium
tungstate as raw materials. The effects of tungsten doping content and GO content on the phase transition
temperature and thermal conductivity of the composites were investigated. The structural morphologies and
phase transition properties of the composites were characterized by XRD, SEM, DSC, FTIR, and laser
thermal conductivity measuring instruments. The results showed that the introduction of graphene
effectively improved the glomeration of vanadium dioxide particles, and vanadium dioxide particles were
uniformly compounded on the surface of graphene. When the atomic percentage of tungsten was 2.5% and
the content of graphene oxide was 4% (based on the mass of vanadium pentoxide), the phase transition
temperature of the prepared composite was reduced from 66.0 ℃ to 32.2 ℃, and the thermal conductivity
was increased to 16.341 W/(m·K) compared with that of pure vanadium pentoxide. The thermal
conductivity was increased from 0.700 W/(m·K) to 16.341 W/(m·K). This composite can meet the
requirements of good thermal insulation and high thermal conductivity at the same time, and overcome the
unity of opposites between thermal insulation and heat dissipation.
Key words: graphene; vanadium dioxide; tungsten doping; intelligent thermal insulation; heat dissipation;
functional materials

解决建筑玻璃的隔热问题对于解决建筑能耗问 使用，降低能耗 [1-3] 。二氧化钒由于具有特殊可逆的
题具有重要意义。目前，多采用在建筑玻璃上涂覆 相变特性，是节能智能窗户应用中使用最广泛的热
以隔热节能粉体为主的涂料，从而大大减少空调的 致变色材料。但将其作为智能窗材料最大的问题是

收稿日期：2020-01-17; 定用日期：2020-03-24; DOI: 10.13550/j.jxhg.20200055
基金项目：深圳市科技计划项目（GJHZ20180929110606770, JCYJ20160226192609015）；广东省科技计划项目（2016B090930011）
作者简介：周天滋（1996—），女，硕士生，E-mail：396277106@qq.com。联系人：吕维忠（1971—），男，教授，E-mail：lvwzh@szu.edu.cn。