文档介绍：2011 年第 69 卷化学学报 Vol. 69, 2011
第 21 期, 2539~2542 ACTA CHIMICA SINICA No. 21, 2539~2542
·研究论文·
氧化石墨烯薄膜的光电化学性质
王纪学王科志* 杨洪强黄喆
(北京师范大学化学学院北京 100875)
摘要用改进的 Hummers 法制备了氧化石墨烯(GO), 在质子化的氧化铟-氧化硒导电玻璃基片上制备了静电自组装薄
膜, 通过紫外-可见光谱和扫描电镜对薄膜进行了表征并研究了薄膜的光电化学性质. 结果表明, GO 薄膜是一种稳定
2 -1
的光电阴极材料, 在光强为 100 mW/cm 的白光照射下, 偏压为- V 时, mol•L 的 Na2SO4 溶液中薄膜电极的光
电流密度达 µA/cm2.
关键词氧化石墨烯; 自组装膜; 光电性质
Photoelectrochemical Properties of Graphene Oxide Film
Wang, Jixue Wang, Kezhi* Yang, Hongqiang Huang, Zhe
(College of Chemistry, Beijing Normal University, Beijing 100875)
Abstract Graphene oxide (GO) was prepared using a modified Hummers approach, and deposited by elec-
trostatically assembly technique onto protonated indium-tin oxide (ITO) coated glass substrate. The
thus-formed GO thin film was characterized by using UV-visible absorption spectroscopy and scanning
-1
electron microscopy. The GO coated ITO electrode in mol•L Na2SO4 was also subjected to photoelec-
trochemical studies, and was found to exhibit stable cathodic photocurrent density of µA/cm2 under
white light irradiance of 100 mW/cm2 and - V bias voltage.
Keywords graphene oxide; self-assembled film; photoelectrochemical property
世界人口增长, 生态环境恶化, 使得在相当长一段的接入, 赋予 GO 一些新的特性, 如分散性、亲水性、
时期内, 人类亟待解决的重大问题之一是能源问题. 常与聚合物的兼容性等, 是一种潜在的制备复合薄膜的良
规能源储量有限, 难以满足可持续发展的需要. 太阳能好材料. 当前对