同轴电纺法TiO2/g-C3N4的制备及光催化性能研究

摘要传统的静电纺丝法使用单一的毛细管状喷头喷丝，通常用于制备实心且表面光滑单一组分的纳米纤维，无法得到具有多种功能性结构的复合材料，应用范围较窄。以酞酸丁酯和尿素为原料，采用同轴静电纺丝法成功制备了TiO₂/g-C₃N₄复合材料，并用X射线衍射（XRD）、傅里叶变换红外光谱（FTIR）、紫外可见漫反射光谱（UV-vis DRS）、场发射扫描电子显微镜（SEM）和Brunauer-Emmett-Teller （BET）分析对样品进行了表征，通过光催化降解亚甲基蓝溶液（MB）研究了不同g-C₃N₄添加量对TiO₂/g-C₃N₄复合材料光催化性能的影响。实验结果表明，采用同轴静电纺丝法结合500℃煅烧工艺成功制备了大比表面积及高光催化性能的TiO₂/g-C₃N₄复合材料。当g-C₃N₄添加量为0.15 g时，TiO₂/g-C₃N₄复合材料对亚甲基蓝溶液（MB）的光催化降解效率可达93.8%，且经过5次重复实验后降解率仍可达80%以上。

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	黄肖桢
	常薇
	刘斌
	李云锋
	杨金鑫
	高兵
	赵浩博

关键词：同轴电纺 TiO₂/g-C₃N₄ 复合材料光催化降解

Abstract： The traditional electrospinning method is usually used to prepare solid and smooth surface single-component nanofibers by a single capillary nozzle, which restricts its application in preparation of composite with multiple functional structures. In this work, TiO₂/g-C₃N₄ composite were successfully synthesized by coaxial electrospinning using butyl phthalate and urea as the raw material. The samples were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), ultraviolet visible diffuse reflectance spectroscopy (UV-vis DRS), scanning electron microscopy (SEM) and Brunauer Emmett Teller (BET) analysis, etc. The effect of g-C₃N₄ addition on the photocatalytic performance of TiO₂/g-C₃N₄ composite was studied by photocatalytic degradation using methylene blue (MB) as the objective. The results show that TiO₂/g-C₃N₄ composite with larger surface area and high photocatalytic performance were successfully prepared by coaxial electrospinning coupled with calcination at 500℃. When the content of g-C₃N₄ was 0.15 g, the photocatalytic degradation efficiency of methylene blue (MB) by TiO₂/g-C₃N₄ composite material reached 93.8%, and the degradation rate can still reach more than 80% after 5 repeated experiments.

Keywords： coaxial electrospinning TiO₂/g-C₃N₄ composite photocatalytic degradation

Received 2020-12-10;

Fund:国家自然科学基金项目（22008185）；柯桥西纺产学研协同创新项目（19KQZD07）；国家级大学生创新创业项目（S202010709039）。

Corresponding Authors: 常薇,E-mail:Changwei@xpu.edu.cn。 Email: Changwei@xpu.edu.cn

About author: 黄肖桢(1996-),男,硕士研究生,现从事光催化材料方面的研究。

引用本文:

黄肖桢, 常薇, 刘斌, 李云锋, 杨金鑫, 高兵, 赵浩博.同轴电纺法TiO₂/g-C₃N₄的制备及光催化性能研究[J]. 化学工业与工程, 2021,38(5): 35-41

Huang Xiaozhen, Chang Wei, Liu Bin, Li Yunfeng, Yang Jinxin, Gao Bing, Zhao Haobo.Preparation of TiO₂/g-C₃N₄ Composite by Coaxial Electrospinning and Its Photocatalytic Performance[J]. Chemcial Industry and Engineering, 2021,38(5): 35-41

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