| g-C3N4/Cu2O/CF电极制备及在微生物燃料电池中的应用 |
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| 引用本文： | 张茗迪,贾玉红,尤宏,付亮,李维国. g-C3N4/Cu2O/CF电极制备及在微生物燃料电池中的应用[J]. 环境科学学报, 2019, 39(9): 2945-2952 |
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| 作者姓名： | 张茗迪 贾玉红 尤宏 付亮 李维国 |
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| 作者单位： | 哈尔滨工业大学城市水资源与水环境国家重点实验室,哈尔滨150000;哈尔滨工业大学(威海)海洋科学与技术学院,威海264200;哈尔滨工业大学(威海)海洋科学与技术学院,威海,264200 |
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| 基金项目： | 城市水资源与水环境国家重点实验室课题（No.2019DX08） |
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| 摘 要： | 为了提高微生物燃料电池的产电性能,采用电沉积法将石墨态氮化碳(g-C_3N_4)与氧化亚铜(Cu_2O)负载到碳毡(Carbon felt,CF)表面,制得g-C_3N_4/Cu_2O/CF光电极用于构建微生物燃料电池.通过场发射扫描电子显微镜(SEM)、透射电子显微镜(TEM)、X射线光电子能谱(XPS)、傅里叶变换红外光谱(FT-IR)、光生电流曲线(I-T)、线性扫描伏安曲线(LSV)对光电阴极进行光电性能测试,并在白光发光二极管(LED)辐照下研究了以Cu_2O/CF、g-C_3N_4/Cu_2O/CF为阴极光催化微生物燃料电池的产电性能.结果表明,g-C_3N_4/Cu_2O/CF电极中g-C_3N_4分布在Cu_2O之间;g-C_3N_4/Cu_2O/CF光电极能提高光利用率,与Cu_2O/CF光电极相比,光电流密度达到2700 mA·m~(-2),增长幅度达到125%;与Cu_2O/CF阴极微生物燃料电池相比,g-C_3N_4/Cu_2O/CF阴极微生物燃料电池具有更优的产电能力,在白光LED辐照下最大功率密度和光电流密度达到110.7 mW·m~(-2)和1102 mA·m~(-2),增长幅度达到16%和27%.
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| 关 键 词： | 石墨态氮化碳 氧化亚铜 微生物燃料电池 光催化 |
| 收稿时间： | 2019-03-12 |
| 修稿时间： | 2019-04-25 |
Preparation of g-C3N4/Cu2O/CF electrode and its application in microbial fuel cells |
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| ZHANG Mingdi,JIA Yuhong,YOU Hong,FU Liang and LI Weiguo. Preparation of g-C3N4/Cu2O/CF electrode and its application in microbial fuel cells[J]. Acta Scientiae Circumstantiae, 2019, 39(9): 2945-2952 |
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| Authors: | ZHANG Mingdi JIA Yuhong YOU Hong FU Liang LI Weiguo |
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| Affiliation: | 1. State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150000;2. College of Marine Science and Technology, Harbin Institute of Technology(Weihai), Weihai 264200,College of Marine Science and Technology, Harbin Institute of Technology(Weihai), Weihai 264200,1. State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150000;2. College of Marine Science and Technology, Harbin Institute of Technology(Weihai), Weihai 264200,College of Marine Science and Technology, Harbin Institute of Technology(Weihai), Weihai 264200 and College of Marine Science and Technology, Harbin Institute of Technology(Weihai), Weihai 264200 |
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| Abstract: | To improve the electricity generation capabilities of microbial fuel cells (MFC), graphite carbonitride (g-C3N4) and cuprous oxide (Cu2O) were electrodeposited onto the surface of carbon felt (CF) to fabricate a g-C3N4/Cu2O/CF photocathode. The photoelectric performance of the photocathode was tested by using field emission scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FT-IR), photogenerated current curve (IT), and linear sweep voltammetry (LSV). The results indicate that g-C3N4 is distributed between Cu2O in g-C3N4/Cu2O/CF electrode; the photogenerated current density of g-C3N4/Cu2O/CF cathode was 2700 mA·m-2, which was 125% higher than that of Cu2O/CF cathode. g-C3N4/Cu2O/CF photocathode was used to construct a microbial fuel cell. The energy density of the photocatalytic microbial fuel cells (PMFC) with Cu2O/CF and g-C3N4/Cu2O/CF cathodes were tested under the irradiation of white LED. Compared with the PMFC with Cu2O/CF cathode, the PMFC with g-C3N4/Cu2O/CF cathode has better power generating performance. When the g-C3N4/Cu2O/CF cathode was used in MFC, maximum power density and photocurrent density of MFC under white LEDs irradiation were up to 110.7 mW·m-2 and 1102 mA·m-2, 16% and 27% higher than the PMFC with Cu2O/CF cathode. |
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| Keywords: | graphite carbonitride cuprous oxide microbial fuel cell photocatalysis |
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