In this paper, kelp (Laminaria japonica), as a kind of abundant biomass, is used as the precursor for the preparation of kelp-derived hierarchical meso-macroporous carbons (K-dHMMCs) through the carbonization under nitrogen (N2) atmosphere at high temperature. The K-dHMMCs exhibits the unique structure with high specific surface area of 416.02 m2 g-1, large pore volume of 0.24 cm3 g-1, the hierarchical meso-macroporous size distribution centered at 2, 12 and 82 nm and high density of defective sites, enabling K-dHMMCs attractive for the electrocatalysis. Drop-casting K-dHMMCs on the glassy carbon (GC) surface allows the construction of K-dHMMCs based electrochemical sensing platform, which shows electrocatalytic activities towards many electroactive molecules, such as potassium ferricyanide, nicotinamide adenine dinucleotide (NADH), hydrogen peroxide (H2O2), dopamine (DA), uric acid (UA), ascorbic acid (AA), epinephrine (EP), l-tyrosine (Tyr) and acetaminophen (APAP). Especially, the K-dHMMCs modified GC (K-dHMMCs/GC) electrode exhibits higher sensitivity, wider linear range, and lower detection limit than both carbon nanotubes modified GC (CNTs/GC) and GC electrodes for H2O2 detection, which makes the K-dHMMCs/GC electrode to be able to determine the H2O2 levels in human urine sample and monitor the H2O2 released from human cancer cells. These results demonstrate that K-dHMMCs/GC possesses a great potential for conventional electrochemical sensing applications.

中文翻译：

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基于海带衍生的分级介观大孔碳的电化学传感平台

在本文中，海带（Laminaria japonica）作为一种丰富的生物质，作为前驱体，通过在氮气 (N2) 气氛下高温碳化制备海带衍生的分级介孔大孔碳 (K-dHMMCs)。温度。K-dHMMCs 具有独特的结构，具有 416.02 m2 g-1 的高比表面积，0.24 cm3 g-1 的大孔体积，以 2、12 和 82 nm 为中心的分级介观大孔尺寸分布以及高密度的缺陷位点，使 K-dHMMC 对电催化具有吸引力。在玻璃碳 (GC) 表面滴铸 K-dHMMCs 允许构建基于 K-dHMMCs 的电化学传感平台，该平台对许多电活性分子显示出电催化活性，如铁氰化钾、烟酰胺腺嘌呤二核苷酸 (NADH)、过氧化氢 (H2O2)、多巴胺 (DA)、尿酸 (UA)、抗坏血酸 (AA)、肾上腺素 (EP)、l-酪氨酸 (Tyr) 和对乙酰氨基酚 (APAP)。特别是，K-dHMMCs 修饰的 GC (K-dHMMCs/GC) 电极比碳纳米管修饰的 GC (CNTs/GC) 和用于 H2O2 检测的 GC 电极表现出更高的灵敏度、更宽的线性范围和更低的检测限，这使得 K -dHMMCs/GC 电极能够确定人类尿液样本中的 H2O2 水平并监测人类癌细胞释放的 H2O2。这些结果表明 K-dHMMCs/GC 在常规电化学传感应用中具有巨大的潜力。与碳纳米管修饰的 GC (CNTs/GC) 和用于 H2O2 检测的 GC 电极相比，具有更宽的线性范围和更低的检测限，这使得 K-dHMMCs/GC 电极能够确定人尿样品中的 H2O2 水平并监测人类癌细胞释放的 H2O2。这些结果表明 K-dHMMCs/GC 在常规电化学传感应用中具有巨大的潜力。与碳纳米管修饰的 GC (CNTs/GC) 和用于 H2O2 检测的 GC 电极相比，具有更宽的线性范围和更低的检测限，这使得 K-dHMMCs/GC 电极能够确定人尿样品中的 H2O2 水平并监测人类癌细胞释放的 H2O2。这些结果表明 K-dHMMCs/GC 在常规电化学传感应用中具有巨大的潜力。