Biomass-derived porous carbon materials with environmental adaptability and superior specific surface area have become one of the most promising materials in 21st era, especially in the electrochemical application. Herein, we proposed a kelp-derived carbon material (KPC) with a unique highly disordered graphite layer structure as an outstanding sensor via facile KOH activation method. The BET adsorption-desorption isotherm of KPC shows a typical IUPAC I type, and KPC possesses a high specific surface area with 2064 m² g⁻¹. Morphology observation and pore size analysis indicate that its porous-rich structure comprises countless micropores and mesopores. This unique structure of KPC not only provides massive active sites but exhibits high sensitivity in the detection of heavy metal by square wave anodic stripping voltammetry (SWASV), with Pb²⁺ at 53.4 μA μM⁻¹ and Cd²⁺ at 26.5 μA μM⁻¹ in simultaneous detection. This study reports a new strategy for the detection of heavy metal ions using porous metal-free carbon materials.

中文翻译：

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海藻衍生的活性多孔碳，通过方波阳极溶出伏安法检测重金属离子

具有环境适应性和优越的比表面积的生物质衍生的多孔碳材料已成为21世纪最有希望的材料之一，尤其是在电化学应用中。在本文中，我们提出了一种具有独特的高度无序石墨层结构的海带衍生碳材料（KPC），作为通过出色的KOH活化方法的杰出传感器。KPC的BET吸附-解吸等温线显示为典型的IUPAC I型，并且KPC的比表面积高，为2064 m ² g ^-1。形态观察和孔径分析表明，其富含孔的结构包含无数的微孔和中孔。这种独特的KPC结构不仅提供海量的活性位点而表现出高的灵敏度在方波伏安阳极检测重金属的溶出伏安法（SWASV）中，用铅²⁺在53.4μAμM ^-1和Cd ²⁺ 26.5μAμM ^-同时检测为¹。这项研究报告了一种使用无金属多孔碳材料检测重金属离子的新策略。