Template-assisted self-activation of mesoporous carbon with active nitrogen/oxygen configurations for sustainable triboelectric nanogenerator powered electro-Fenton degradation
Template-assisted self-activation of mesoporous carbon with active nitrogen/oxygen configurations for sustainable triboelectric nanogenerator powered electro-Fenton degradation
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具有活性氮/氧结构的介孔碳的模板辅助自激活，用于可持续摩擦纳米发电机驱动的电芬顿降解
DOI：
10.1016/j.nanoen.2021.105825
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发表时间：
2021-01-27
期刊：
影响因子：
17.6
通讯作者：
Gao, Shuyan
中科院分区：
文献类型：
--
作者：
Tian, Miao;Zhu, Yingzheng;Gao, Shuyan
开发高效阴极催化剂和外加电源相结合的高效电芬顿（EF）降解体系已引起工业应用的广泛关注。本文提出了一种利用双氰胺（含氮前驱体和模板剂）和葡萄糖酸锌（碳/氧前驱体和活化剂）协同作用的模板辅助自活化策略。所得的N，O共掺杂介孔碳材料具有宽的孔径分布和最佳的氮/氧构型（吡咯N，？C？O？C和？COOH），精心促进2 e-氧还原产生H2 O2沿着？OH通过EF过程。考虑到自供电电化学系统的构建与节能的角度，一系列的柔性和形状自适应的印刷螺旋弹簧状摩擦电纳米发电机（HS-TENG）的制作作为电源，其中典型的印刷矩形HSTENG具有700？A，开路电压为1500 V，转移电荷为2.5？C和突出的最佳输出功率密度为2.1 W m- 2。该集成系统在80 min内对孔雀石绿色和亚甲基蓝的降解率分别达到98.2%和97.3%，具有良好的可重复使用性，满足生态友好和可持续的EF降解系统。本工作将模板辅助自活化策略合成阴极电催化剂和可持续降解EF的多功能TENG相结合，为实际工业废水的大规模自供电处理建立了蓝图，具有广泛的应用前景。
Exploiting high-performance electro-Fenton (EF) degradation systems combined with efficient cathode catalysts and external power source has attracted extensive attentions for industrial application. Herein, a facile templateassisted self-activation strategy by cooperative effect of dicyandiamide (nitrogen precursor and template) and zinc gluconate (carbon/oxygen precursor and activating agent) is proposed. The obtained N, O co-doped mesoporous carbon materials are provided with broad pore size distributions and optimal nitrogen/oxygen configurations (pyrrolic N, ?C?O?C and ?COOH), elaborately facilitating the 2e- oxygen reduction for H2O2 generation along with ?OH via EF process. Considering the construction of self-powered electrochemical system with energy-efficient perspective, a series of the flexible and shape-adaptive printed helical spring-like triboelectric nanogenerators (HS-TENGs) are fabricated as electric supply, in which typical printed rectangular HSTENG possesses short-circuit current of 700 ?A, open-circuit voltage of 1500 V, transfer charge of 2.5 ?C and prominent optimum output power density of 2.1 W m- 2. Such integrated system delivers the accessible EF degradation efficiencies of 98.2% and 97.3% for malachite green and methylene blue in 80 min with good reusability, satisfying the eco-friendly and sustainable EF degradation system. This work combines the cathode electrocatalysts synthesis via template-assisted self-activation strategy and the versatile TENGs for sustainable EF degradation, establishing a blueprint for large-scale self-powered treatments in actual industrial wastewater with the broad range of application prospects.