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首页> 外文期刊>RSC Advances >Highly stable binder free CNTs/rGO aerogel electrode for decolouration of methylene blue & palm oil mill effluent via electro-Fenton oxidation process
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Highly stable binder free CNTs/rGO aerogel electrode for decolouration of methylene blue & palm oil mill effluent via electro-Fenton oxidation process

机译：高度稳定的无粘合剂CNTs / rGO气凝胶电极，用于通过Fenton氧化工艺对亚甲基蓝和棕榈油厂的废水进行脱色

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In this study, single wall carbon nanotubes (CNTs)/reduced graphene oxides (rGO) aerogels were prepared by a one-pot hydrothermal process without using a binder. The produced CNTs/rGO aerogel was used as cathode in electro-Fenton system for the decolouration of methylene blue (MB) and palm oil mill effluent (POME). The addition of CNTs increased the surface area, pore volume and conductivity of the rGO aerogel, which further enhanced their performance as cathode towards the decolouration of MB and POME via electro-Fenton reaction. Complete decolouration of MB using rGO aerogel without CNTs could not be achieved. The effect of electro-Fenton reaction parameters conducted using the aerogel samples including, current, electrolyte concentrations and pH, were investigated accordingly. The CNTs/rGO aerogel electrode also showed high stability and reusability for up to six consecutive treatment cycles for MB. Besides, the CNTs/rGO aerogel also showed good performance in treating POME with 69.8%, 47.6% and 58.1% of reduction in true colour, total organic carbon (TOC) and chemical oxygen demand (COD), respectively, via 60 minutes electro-Fenton reaction. This study showed that CNTs/rGO aerogels with high porosity and stability can be prepared using simple procedure without adding binder. This fully carbon-based aerogel can serve as effective cathode for decolouration of organic dye and effluent.
机译：在这项研究中，单壁碳纳米管（CNTs）/还原的氧化石墨烯（rGO）气凝胶是通过一锅法水热法制备的，无需使用粘合剂。所生产的CNTs / rGO气凝胶在电子芬顿系统中用作阴极，用于亚甲基蓝（MB）和棕榈油厂废水（POME）的脱色。 CNT的添加增加了rGO气凝胶的表面积，孔体积和电导率，从而进一步增强了它们作为阴极的性能，可通过电子芬顿反应使MB和POME脱色。使用不含CNT的rGO气凝胶无法完全去除MB。相应地研究了使用气凝胶样品进行的电子芬顿反应参数的影响，包括电流，电解质浓度和pH。碳纳米管/ rGO气凝胶电极在MB的多达六个连续处理周期中也显示出高稳定性和可重复使用性。此外，碳纳米管/ rGO气凝胶通过60分钟的电脱色处理对POME表现出良好的性能，分别使本色，总有机碳（TOC）和化学需氧量（COD）降低了69.8％，47.6％和58.1％。芬顿反应。这项研究表明，无需添加粘合剂即可使用简单的方法制备具有高孔隙率和稳定性的CNTs / rGO气凝胶。这种完全基于碳的气凝胶可以用作有机染料和废水脱色的有效阴极。

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