剥脱关节
光电流
材料科学
化学工程
纳米片
电解质
吸收(声学)
吸附
光电化学电池
解吸
吸收光谱法
纳米技术
制作
薄膜
光电子学
电极
化学
有机化学
光学
复合材料
石墨烯
工程类
物理
病理
物理化学
医学
替代医学
作者
Hui Miao,Guowei Zhang,Xiaoyun Hu,Jianglong Mu,Tongxin Han,Jun Fan,Changjun Zhu,Libin Song,Jintao Bai,Xun Hou
标识
DOI:10.1016/j.jallcom.2016.08.184
摘要
Herein, 2D g-C3N4 nanosheets was successfully prepared by two processes: acid treatment and liquid exfoliation. The thickness of the nanosheets was nearly 4.545 nm containing ∼13 C-N layers. The acid treatment process before liquid exfoliation for bulk g-C3N4 could effectively destroy the in-plane periodicity of the aromatic systems and made the bulk easily exfoliated. This work carefully discussed the acid treatment effect for bulk by XRD patterns, nitrogen adsorption-desorption isotherm, FT-IR spectra, and UV–vis–NIR absorption spectra. Moreover, the nanosheets was fabricated and transferred onto FTO substrates by vacuum filtration self-assembled method to carefully investigate their optical, electrical, and photoelectrochemical properties. The thin film filtrated by 2 ml g-C3N4 nanosheets supernatant showed the best photocurrent response nearly 0.5 μA/cm2 and the lowest resistance of charge transfer (Rct) at the interface between FTO and electrolyte. The photocurrent response could be further effectively improved from nearly 0.5 to 1.8 μA/cm2 by the integration of CNTs to promote charge separation and transfer. Thus, the easy, safe, and indirect synthesis of 2D g-C3N4-based nanosheets thin films opens new possibilities for the fabrication of many energy-related devices.
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