Agro-industrial waste is an abundant bio-resource that can be used as a feedstock to develop carbon nanomaterials. This research identifies the specific microwave pyrolysis operating conditions to generate activated biochar from sugarcane bagasse (SCB) biomass. The optimal conditions to obtain activated biochar from SCB was by using HSO chemical treatment in a mass ratio 1:1 followed by microwave-assisted pyrolysis at 1.5 kW for 1 hour. The resulting carbon material attained a 278 m/g BET surface area and a relatively pure carbon structure with a minor concentration of oxygen and silicon. The activated biochar was used to develop an electrochemical sensor using the drop-casting method. The SCB-activated biochar electrochemical sensor achieved significant electrocatalytic properties to detect paracetamol, showing 71% less charge transfer resistance in EIS and 96% higher electrocatalytic properties than the bare electrode based on CV curves. The linear range of paracetamol current responses demonstrated a considerable sensitivity with a 2.5 µM limit of detection. The modified GCE indicates a promising performance in paracetamol detection in a real sample.

中文翻译：

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基于甘蔗渣活化生物炭的扑热息痛电化学传感

农工业废物是一种丰富的生物资源，可用作开发碳纳米材料的原料。本研究确定了从甘蔗渣 (SCB) 生物质生成活化生物炭的特定微波热解操作条件。从SCB中获得活化生物炭的最佳条件是采用质量比1:1的HSO化学处理，然后在1.5 kW下微波辅助热解1小时。所得碳材料获得了 278 m/g BET 表面积和相对纯的碳结构，其中氧和硅浓度较低。活化的生物炭用于采用滴铸法开发电化学传感器。SCB 激活的生物炭电化学传感器在检测扑热息痛方面实现了显着的电催化性能，根据 CV 曲线显示，EIS 中的电荷转移电阻比裸电极低 71%，电催化性能高 96%。对乙酰氨基酚电流响应的线性范围表现出相当高的灵敏度，检测限为 2.5 µM。改进的 GCE 在实际样品中的扑热息痛检测中表现出良好的性能。