School of Chemistry and Chemical Engineering, Henan Normal University , Xinxiang, Henan 453007, P.R. China.
Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences , Beijing 100083, P.R. China.
ACS Nano. 2017 Apr 25;11(4):3965-3972. doi: 10.1021/acsnano.7b00422. Epub 2017 Apr 11.
Carbon electrode materials are fabricated from bean curd to replace costly Pt-based electrodes to degrade methyl red (MR) as self-driven by a multilayer linkage triboelectric nanogenerator (ML-TENG). With the sponge as the buffer layer and precharge injection, the peak open-circuit voltage, V, short-circuit current, I, and maximum power density of the ML-TENG can reach and remain stable at 1300 V, 1.2 mA, and 7.4 W m (load resistance = 500 KΩ), respectively. Using the electric power generated by such an updated TENG, highly toxic and carcinogenic MR can be indirectly degraded to CO through an oxidation process induced by active chlorine produced at the as-obtained carbon-based electrode interface. Such an electrochemical degradation mechanism is proposed based on the cyclic voltammogram, gas chromatograph-mass spectrometer, and mass spectrometer. With compelling features of the TENG and carbon materials, such as sustainable energy, high and stable output performance, cost savings, and high degradation efficiency, this work pioneers the marriage of the TENG with carbon-based materials to self-power electrochemical degradation of organic pollutants for environmental protection.
豆腐基碳电极材料被用于替代昂贵的 Pt 基电极，以自驱动多层链式摩擦纳米发电机（ML-TENG）降解甲基红（MR）。通过海绵作为缓冲层和预充电注入，ML-TENG 的峰值开路电压、V、短路电流、I 和最大功率密度可分别达到并稳定在 1300V、1.2mA 和 7.4W m（负载电阻=500KΩ）。利用这种更新的 TENG 产生的电力，通过在获得的碳基电极界面产生的活性氯诱导的氧化过程，将高毒性和致癌性的 MR 间接降解为 CO。这种电化学降解机制是基于循环伏安法、气相色谱-质谱联用仪和质谱仪提出的。由于 TENG 和碳材料具有可持续能源、高且稳定的输出性能、节省成本和高降解效率等特点，这项工作开创了 TENG 与碳基材料相结合，实现自供电电化学降解有机污染物以保护环境的先河。
