论文部分内容阅读
采用化学气相沉积法,在碳毡基体上合成碳纳米管,将二氧化锡(SnO_2)溶胶负载在碳纳米管表面,然后煅烧处理,制备碳毡基载SnO_2掺杂碳纳米管复合电极,用扫描电镜(SEM)、X-射线衍射(XRD)和能量色散X-射线(EDX)对样品表征。以复合电极为阳极,葡萄糖溶液为阳极室供给基质,柔性石墨为阴极,构建微生物燃料电池,考察复合电极对微生物燃料电池产电性能及化学需氧量(COD)除去率影响。实验表明,温度为38℃,外电阻为2500Ω,基质浓度为1500mg/L时,微生物燃料电池最大输出电压为563mV,对COD降解率为78%。
Carbon nanotubes were synthesized by chemical vapor deposition on a carbon felt matrix, SnO 2 sol was loaded on the surface of the carbon nanotubes, and then calcined to prepare carbon felt-based SnO 2 -doped carbon nanotube composite electrodes with Scanning electron microscopy (SEM), X-ray diffraction (XRD) and energy dispersive X-ray (EDX) were used to characterize the samples. The composite electrode was used as the anode, the glucose solution was used as the anode chamber to supply the substrate and the flexible graphite as the cathode to construct the microbial fuel cell. The effect of the composite electrode on the electricity generation performance and COD removal rate of the microbial fuel cell was investigated. Experiments show that when the temperature is 38 ℃, the external resistance is 2500Ω and the substrate concentration is 1500mg / L, the maximum output voltage of microbial fuel cell is 563mV and the COD degradation rate is 78%.